Thermo Scientific RadEyeSPRD-GN.pdf

Operating Instructions DB-103 E RadEye SPRD-GN 42508/12 Spectroscopic Radiation Detector REVISIONS SHEET: Rev. Rev. Dept. Name Rev. Cat. Explanation state resp. page *) 25.08.16 RM&SI-EH Pijahn...

Operating Instructions DB-103 E RadEye SPRD-GN 42508/12 Spectroscopic Radiation Detector REVISIONS SHEET: Rev. Rev. Dept. Name Rev. Cat. Explanation state resp. page *) 25.08.16 RM&SI-EH Pijahn First edition P# 00/2015 *) Category C: editorial correction I: clearing improvement A: substantial amendment Explanations must be given, at least with Category A. RadEye SPRD-GN DB-103 E 0-1 Pi/Iw/Ff 25.08.2016 CONTENTS: 1. Introduction...................................... 1-1 2. Installation and start-up.................. 2-1 2.1 Scope of delivery......................................................2-1 2.2 Inserting the battery..................................................2-2 2.3 Mounting of the protection sleeve............................2-4 2.4 Switching the unit on................................................2-4 3. Configuration................................... 3-1 3.1 Ratemeter..................................................................3-1 3.1.1 Basic display......................................................3-1 3.1.2 Information mode display..................................3-5 3.1.3 Channel mode display.......................................3-6 3.1.4 Cross-mode display...........................................3-7 3.2 Scaler........................................................................3-8 3.2.1 Mean value........................................................3-9 3.2.2 Accumulated counts........................................3-10 3.2.3 Wait time.........................................................3-10 3.2.4 Background measurement...............................3-11 3.3 Nuclide identification.............................................3-13 0-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  3.3.1 Switch between Nuclide ID and Ratemeter mode...............................................3-14 3.3.2 “Home” Button................................................3-14 3.3.3 Main screen.....................................................3-14 3.3.4 Measuring........................................................3-15 3.3.5 Result...............................................................3-17 3.3.6 Save spectrum..................................................3-20 3.3.7 View saved spectrum.......................................3-21 3.3.8 Trigger list.......................................................3-21 3.4 Menu functions.......................................................3-21 3.4.1 Main menu.......................................................3-22 3.4.2 Sub menu “Nuc ID Settings”...........................3-24 3.4.3 Sub menu “Alarm indication”.........................3-25 3.4.4 Sub menu “Settings”........................................3-26 3.4.5 Sub menu “Edit alarm”....................................3-28 3.4.6 Sub menu “Scaler parameter”..........................3-28 3.4.7 Sub menu “Operation mode”...........................3-29 3.4.8 Sub menu “Measuring unit” (G / N)................3-29 3.4.9 Sub menu “Scaler Backgnd”...........................3-30 3.5 Alarm thresholds.....................................................3-30 3.6 Gamma alarm threshold based on the rela- tive standard deviation (sigma threshold).................................3-31 3.7 Setting alarm thresholds..........................................3-32 RadEye SPRD-GN DB-103 E 0-3 Pi/Iw/Ff 25.08.2016 4. Operation.......................................... 4-1 4.1 Audible single pulse indication and finder mode......4-1 4.2 Rated alarm...............................................................4-2 4.3 Alarm indication.......................................................4-2 4.4 Alarm display indication...........................................4-4 4.5 Additional information.............................................4-5 4.6 Alarm latching..........................................................4-5 4.7 Show alarm...............................................................4-6 4.8 Text Info...................................................................4-6 4.9 Set date and time.......................................................4-7 4.10 Battery type...........................................................4-7 4.11 Lu-Adjust..............................................................4-8 4.11.1 Neutron alignment...........................................4-12 4.12 Auto adjust..........................................................4-13 4.13 Key Lock.............................................................4-14 0-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 5. Detection of gamma sources.......... 5-1 5.1 Gamma Background.................................................5-1 5.2 NBR (Natural Background Rejection)......................5-2 6. Indication of neutron sources........ 6-1 7. Functional test................................. 7-1 7.1 Functional test...........................................................7-1 7.2 Failure indication......................................................7-1 7.3 Overload indication...................................................7-3 7.4 Temperature warning................................................7-4 8. PC configuration.............................. 8-1 8.1 Ways to connect to a PC...........................................8-1 8.1.1 Wireless connection via Bluetooth....................8-1 8.1.2 Cable connection...............................................8-2 8.2 Installation of the optional RadEye_SPRD.EXE software...............................................................................8-3 RadEye SPRD-GN DB-103 E 0-5 Pi/Iw/Ff 25.08.2016  8.3 Start RadEye_SPRD.EXE........................................8-3 8.3.1 RadEye SPRD-GN Device Parameters.............8-4 8.3.2 Measurements....................................................8-4 8.3.3 Select serial interface.........................................8-7 8.4 Configuration............................................................8-8 8.4.1 General configuration........................................8-8 8.4.2 User defined text..............................................8-10 8.4.3 Mode configuration.........................................8-11 8.4.4 Nuclide ID.......................................................8-12 8.4.5 Trigger list.......................................................8-14 8.4.6 Alarm configuration........................................8-15 8.4.7 Bluetooth configuration...................................8-16 8.4.8 Menu configuration.........................................8-17 8.5 History....................................................................8-18 8.6 Logbook..................................................................8-20 8.7 RadEye Spectra.......................................................8-21 8.7.1 Storing spectra to another location..................8-23 8.7.2 Loading spectra from file................................8-23 8.7.3 Export spectra data..........................................8-23 9. Trouble Shooting............................. 9-1 9.1 RadEye SPRD-GN doesn’t power on.......................9-1 9.1.1 Press “On” for at least one second.....................9-1 9.1.2 Check battery.....................................................9-1 0-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  9.2 Reading data from the start up screen.......................9-2 9.3 The RadEye doesn’t show the menu items as described in the manual............................................9-2 9.4 The RadEye shows an error message in the display’s top line.......................................................9-3 9.5 The RadEye is not found in the software..................9-3 9.6 RadEye lost date and time settings...........................9-5 9.7 RadEye’s battery status is lower than expected........9-5 9.8 History data shows the wrong time and date............9-6 10. Maintenance................................ 10-1 10.1 Recommended maintenance................................10-1 10.1.1 Lu-Adjust and Neutron Alignment..................10-1 10.1.2 Cleaning the instrument...................................10-1 10.1.3 Remove batteries for storage...........................10-1 11. Spare Parts.................................. 11-1 11.1 Available spare parts...........................................11-1 11.2 Recommended spare parts...................................11-1 RadEye SPRD-GN DB-103 E 0-7 Pi/Iw/Ff 25.08.2016 12. Optional Accessories................. 12-1 12.1 RadEye Holster (425067046)..............................12-1 12.2 Earphone for RadEye series (425067037)...........12-1 12.3 Lutetium Test-Adapter for RadEye (425067071)........................................................12-2 12.4 Desktop holder (425067060)...............................12-2 12.5 IR connection cable USB (4254026)..................12-3 12.6 Bluetooth battery cover (425067087).................12-3 12.7 RadEye Area Monitor with alarm contacts (4250680)............................................................12-4 13. Technical data............................. 13-1 13.1 RadEye SPRD-GN..............................................13-1 13.2 Firmware version................................................13-6 V 1.20.............................................................................13-6 14. Annex........................................... 14-1 14.1 Factory Settings RadEye SPRD-GN...................14-1 15. Service contact............................ 15-1 0-8 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 SAFETY INSTRUCTIONS Do not use the unit if error messages appear on the screen. The earphone connector at the bottom side of the instrument must be exclusively used by equipment that is specified for use with RadEye SPRD-GN. The instrument must not be used in explosive atmosphere. The RadEye SPRD-GN is not intended to be used as a person- al dosimeter. No neutron dose rate or dose calculation is per- formed. Due to the high detector sensitivity the gamma dose rate measuring range of the RadEye SPRD-GN is limited to 250 µSv/h (25 mrem/h). For higher dose rates (indicated by “Overload”) an underestimation of the integrated gamma dose can be expected. The RadEye SPRD-GN shall not be used for measurements in pulsed fields. RadEye SPRD-GN DB-103 E 0-9 Pi/Iw/Ff 25.08.2016 WEEE Compliance: This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the following symbol: Thermo Fisher Scientific has contracted with one or more recycling/disposal companies in each EU Member State, and this product should be disposed of or recycled through them. Further information on Thermo Fisher Scientific compliance with these Directives, the recyclers in your country, and in- formation on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Di- rective are available at www.thermo.com/WEEERoHS 0-10 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 1. Introduction The RadEye SPRD-GN radiation pagers are highly sensitive and rugged measuring devices to detect and localize gamma and neutron radiation sources. Furthermore, by virtue of the so called NBR-technique (natu- ral Background Rejection) the RadEye SPRD-GN pager sepa- rate man-made (non-NORM1) gamma radiation from natural background fluctuations. As well, the energy compensated gamma dose rate can be measured in terms of ambient equiva- lent dose rate H*(10) (Sv/h, rem/h) or air kerma rate (Gy/h) respectively response (R/h). The instrument is designed to meet the requirements in the ANSI standard 42.48 and IEC 62618. 1 Natural Occurring Radioactive Material (NORM). RadEye SPRD-GN DB-103 E 1-1 Pi/Iw/Ff 25.08.2016 The RadEye SPRD-GN incorporates a single CLYC (Cesium Lithium Yttrium Chloride) Scintillator which is equipped with a miniature silicon photo-multiplier (SiPM) allowing the de- tection of very low radiation levels. The use of Pulse Shape Discrimination (PSD) for neutron de- tection makes the RadEye SPRD-GN an ideal solution for gamma-neutron detection. The RadEye SPRD-GN pager identifies to the user whether the alarms are due to gamma or neutron by a different colored alarm LED, different tones and flashing the count rate / dose rate display readings with an inverted display background of the alarming channels or both channels as appropriate. The RadEye SPRD-GN also has different audible alarms discrimi- nating between elevated background/NORM and any artificial isotope alarm also the gamma and neutron audible alarms are clearly different. This gives the RadEye SPRD-GN audible and visual identification using NBR of the type of material detected. The last 1600 mean and maximum values of gamma count rate, neutron count rate and gamma dose rate data points are recorded internally and can be read out via serial interface. Additionally the last 250 alarms, errors and changes of the configuration are logged. All events can be read out via serial interface. A real time clock is provided to add a time stamp to all buffer data. 1-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  The RadEye SPRD-GN enables measurement of detector pulse rates and energy compensated dose and dose rates. All menu functions described in 3.4 can be configured to be invisible. Thus the instrument can be configured to both, an extremely simple mode allowing just LCD-illumination and alarm ac- knowledgment to a very versatile mode for the more experi- enced user. Key on top side to acknowledge alarms if worn Orange LED: gamma in a holster alarm / blue LED: neutron alarm LEDs are showing radiation exceeding Powerful graphical display. thresholds. Visible Units in cps, Roentgen, Rem from top if worn in a or Sievert. holster and from display side Easy to use, four key, menu driven user interface Rugged plastic enclosure Earphone connector RadEye SPRD-GN DB-103 E 1-3 Pi/Iw/Ff 25.08.2016 2. Installation and start-up 2.1 Scope of delivery The RadEye is delivered in a folding paper box together with two AAA cells, a rubber protection sleeve and an operating manual. For optional accessories see chapter 12. RadEye SPRD-GN DB-103 E 2-1 Pi/Iw/Ff 25.08.2016 2.2 Inserting the battery The two AAA-Alkaline cells as delivered with the instrument allow est. 150 h of normal operation. AAA size rechargeable batteries can be used as well.  Switch off the measuring instrument and wait about 5s for complete shutdown.  Remove rubber boot.  Open the cover of the battery compartment. Use of a coin is recommended.  Exchange the batteries according to the shown polarity.  Close the compartment cover hooks first, care for the rub- ber seal being in its groove.  Switch on the unit again. (see chapter 2.4) The instrument continues working in the operating mode set last (see chapter 3.2). 2-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 The measured values in the history memory remain stored. The real time clock for time stamp of history values and log- book continue operation, if batteries are exchanged without delays. If Real Time Clock is set, actual time and date is dis- played for 3 s (see chapter 2.4). If correct timing information of logbook and history is re- quired, the Real Time Clock should be set manually (see chap- ter 3.4) or by means of the PC-program. To keep RTC running during battery exchange, batteries must be exchanged without delays. History data and measurement parameters are stored perma- nently, even if batteries are removed. RTC information is required, if the instrument is switched off and on during operation and if correct timing information for history and logbook entries and stored is needed. For the last power on interval, the relative time information of logbook and history is corrected to actual PC clock time dur- ing read out. In these cases the setting of the clock is not re- quired. For correct time stamp of stored spectra the RTC must be set. RadEye SPRD-GN DB-103 E 2-3 Pi/Iw/Ff 25.08.2016 2.3 Mounting of the protection sleeve The rubber protection sleeve improves ruggedness to mechan- ical shocks. For mounting of the sleeve first put the instrument into the top of the sleeve. Then pull lower edges of the sleeve, one after the other into its right position. First step Second step Front view Rear view 2.4 Switching the unit on To switch on the RadEye SPRD-GN, keep the “ON” button pressed for at least one second. The RadEye may need a long- er time for startup if it is started immediately after the batteries 2-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 are inserted. The sound generator (beeper) is initiated as long as the key is pressed. Calibration date Checksum of the firmware Battery Firmware voltage version Display of RadEye SPRD-GN during switch on. The RadEye SPRD-GN starts working with the parameters previously selected (operation mode, calibration factor, alarm threshold, measurement unit etc.). The displayed measure- ment value is a amma value, a eutron value or both. If the real time clock is set, actual time and date is displayed for 3s. RadEye SPRD-GN DB-103 E 2-5 Pi/Iw/Ff 25.08.2016 Display after switch on. If the real time clock is reset a warning is shown: This screen can be acknowledged by pressing the right button. After startup the message “Learning” is displayed together with a progress bar for the first 16 s. During this time the sig- ma-alarm levels of the gamma channel is adapted more quick- ly to the current radiation level. During this time period the sigma alarms are active, however not yet with the full sensitiv- ity. The NBR-Alarm is immediately active. Display during the learning phase. The RadEye is ready for operation. 2-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Unless otherwise specified by the customer when placing the order, the values are preset (see chapter 14.1). The factory set alarm thresholds for dose rate and count rate are around 200 - 500 % above the typical normal background and allow sensitive, but false alarm free dose rate monitoring with a reasonably fast response time. The alarm thresholds for the dose are set to the maximum possible values, thus being deactivated. With the setting of the history recording interval of 120 s, the last 52 hours of operation will be stored in the history memory. These default values can be changed by the user with the menu functions (chapter 3.4) or with the help of the optional PC- program “RadEye_SPRD.EXE” and the cable 42540/26 or 42540/29. Furthermore, additional monitoring modes can be activated. The calibration parameters can only be changed in the factory using special software tools. RadEye SPRD-GN DB-103 E 2-7 Pi/Iw/Ff 25.08.2016 3. Configuration 3.1 Ratemeter After switching on the RadEye SPRD-GN the configured basic display is activated. By a short press on the arrow up key (▲/Info) for one or more times four further display modes can be chosen which are shown for only some seconds. The following chapters describe the different modes of the basic display. 3.1.1 Basic display Note: Some of the following display options may be disabled by the user specific configuration (see chapter 8.4.1). The basic display shows the gamma channel. Normally the On key toggles between standard display and gamma value on a time axis: RadEye SPRD-GN DB-103 E 3-1 Pi/Iw/Ff 25.08.2016 Gamma measurement value 8 7 3 1 2 4 6 5 5 Neutron measurement value 1 2 7 3 4 6 5 Gamma and neutron measurement values 3 4 3 4 1: Battery indication 5: Alarm thresholds 2: Heart beat 6: Bar graph overview 3: Gamma or Neutron channel 7: Info line 4: Measurement unit 8: Auto adjust active 3-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Graphic display: 4 3 1 2 1: Threshold alarm 1 2: Gamma count rate 3: Linear scale (auto ranging) 4: Measurement value The different display modes can be toggled by pressing the arrow down key. Please note: If the backlight of the display is not on, the first pressed key will lead only to an activated display backlight without any other action. The battery indication symbol shows the state of the battery. A pulsing heart beat and auto adjust symbol signalizes that the RadEye SPRD-GN is working properly. The Gamma or the Neutron channel is labeled with a G or a N. The measurement unit can be chosen by the main menu and may differ from the pictures above. RadEye SPRD-GN DB-103 E 3-3 Pi/Iw/Ff 25.08.2016 Please note that the time response of the gamma count rate (measurement units: cps or cpm) is much quicker than the time response of the energy compensated dose rate (measurement units: rem/h, R/h, Sv/h, Gy/h). The RadEye SPRD-GN does not show the Neutron dose or the dose rate. During operation of the measuring device at least six alarm thresholds are checked. Four of them are shown in the basic displays with two black triangles (upper triangle: alarm 1 gamma / neutron, lower triangle: alarm 2 gamma / neutron), two of them refer to the dose and can only be seen in the Edit Alarms sub menu. The bar graph graphically represents the intensity of the measurement value to simplify the meter- reading. The info line is used to display additional information, e.g. the ambient temperature, the NBR-Status or any kind of malfunc- tion. 3-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 3.1.2 Information mode display Note: Some of the following display options may be disabled by the user specific configuration (see chapter 8.4.1). Pressing the up arrow key shortly –shows upon - 1st click: the current gamma dose rate (µR/h, µSv/h, µGy/h or rem/h), - 2nd click: the accumulated gamma dose (R, Sv, Gy or rem) additionally the remaining time until the dose alarm 1 is reached, assuming the current dose rate will persist. - 3rd click: the mean value and peak value of the measured gamma count rate (cps), together with the time indicated since the last reset. - 4th click: the mean value and peak value of the measured neutron count rate (cps), together with the time indicated since the last reset. (if neutron meas- urement is enabled) RadEye SPRD-GN DB-103 E 3-5 Pi/Iw/Ff 25.08.2016  1st click: 2nd click Gamma dose rate Gamma Dose 3rd click 4th click Gamma Peak/Mean Neutron Peak/Mean After 10 seconds or after 5th click the basic display is activated again. 3.1.3 Channel mode display Pressing the down arrow – key shows upon - 1st click: the neutron channel - 2nd click: dual channel display - 3rd click: graphical display of count rate gamma 3-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  1st click: 2nd click Neutron count rate Dual display 3rd click Graphical overview (gamma count rate) After 4th click the gamma channel is shown again. 3.1.4 Cross-mode display In this mode the measurement value of the dose rate is displayed together with the bar graph of the cps value. The count rate alarm thresholds are active, resulting in a quick alarm response, while the calculating of the dose rate for low count rates takes place over a longer time. RadEye SPRD-GN DB-103 E 3-7 Pi/Iw/Ff 25.08.2016 This mode is for rapid finding of radioactive sources while displaying true dose rate values. A press on the Info key (ar- row up) results directly in the display of the accumulated dose respectively the mean- and max values. This mode can be activated or deactivated via PC-Software (see chapter 8.4) or the option “Cross-mode” in the settings sub menu (see chapter 3.4). 3.2 Scaler To enter the scaler mode select in the submenu “Operation mode” the option “Scaler“. 3-8 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  3.2.1 Mean value The scaler mode starts with the parameter set in submenu „Scaler Parameter“. Number of measure- Measured ment mean value Preset time Accumulated counts Elapsed time “▼”-Key toggles between gamma, Action of “In- neutron or dual display fo/▲” key To start the measurement, press the “Info/▲” key. If a wait time is configured, the start of scaler measurement is delayed. During this wait time a countdown is displayed. See also chap- ter 3.2.3. While the measurement is in progress the Stop sym- bol is blinking. RadEye SPRD-GN DB-103 E 3-9 Pi/Iw/Ff 25.08.2016 3.2.2 Accumulated counts With accumulated counts selected via RadEye_SPRD.EXE the RadEye SPRD-GN shows the collected counts within the measurement time in place of the mean value. This option is only available in combination with measurement unit “cps” and “cpm”. Accumulated counts are limited to 65000 counts. “Accumulated counts” is not displayed with selected option “Scaler netto”. 3.2.3 Wait time Before a scaler measurement is started a delay time (wait time) can be configured. This is very useful if the Gamma Laboratory Kit (425069015) is used. To edit the wait time select the menu option “Set wait time” in submenu “Scaler parameter”: The wait time can be set between 0s to 99s. The value can be increased by the “▲/Info” and decreased by the “▼/On” but- ton. Save this value via the “►” button. 3-10 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  3.2.4 Background measurement To start a background measurement, select “Start Meas.” in submenu “Scaler Backgnd”. The background measurement starts with the parameter set in submenu option „Set parameter“. To start the measurement, press the “▲/Info” key. While the measurement is in progress “Exit” is blinking. Measure- ment value Preset count Preset time Accumulated Elapsed time counts Action of “Info/▲” “▼”-Key toggles between gam- key ma, neutron or dual display The measurement is finished if either the elapsed time arrived the preset time or the accumulated counts reached preset count. RadEye SPRD-GN DB-103 E 3-11 Pi/Iw/Ff 25.08.2016 When the measurement is completed, the user is asked wheth- er to save this value („Yes“) or discard this measurement (“No”). If option “Scaler netto” is selected the background value will be subtracted from the measurement. Background value Net value 3-12 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 3.3 Nuclide identification Nuclide identification can be started either via menu item “Operation mode” or with a long press on “Info/▲” button. 8 7 1 6 5 4 3 2 1 Current count rate 2 Load a saved spectrum (Action of ► key) 3 Action of “Info/▲” key 4 Percent complete 5 A: automatic measuring time t: fixed measuring time B: background measurement C: Option „Cycle&Save“ active 6 Elapsed measuring time 7 Battery indication 8 Heartbeat Nuclide identification can be terminated with a long press on “Info/▲” button. The mode is as well terminated by time out after 60 sec if no identification is initiated. RadEye SPRD-GN DB-103 E 3-13 Pi/Iw/Ff 25.08.2016 3.3.1 Switch between Nuclide ID and Ratemeter mode Switching between Nuclide ID and Ratemeter mode is done with a long press on “Info/▲” button. If the Info button is pressed for 1s a notification screen is displayed: Keep the button pressed until the countdown is over. If the button is released, the RadEye falls back to previous mode. 3.3.2 “Home” Button In nuclide identification mode the left button (◄ / Menu) works as a “Home” button ( ). The first press on this “Home” button in the result pages (3.3.5) forces the RadEye to switch to the basic display. The second press on the key calls the main menu. 3.3.3 Main screen The main screen offers various displays With the “Save” button (only visible, if option “Autosave” is turned off) a previously recorded unsaved spectrum can be stored to EEPROM (see also 3.3.6). 3-14 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  With the “Load” button a previously saved spectrum can be loaded (see also 3.3.7). refers to the ▲/Info button and is used to start an ac- quisition. While spectrum acquisition is in progress the symbol turns into refers to ▼/On button and is used to toggle through various screens: Spectrum acquisition Visible screens Active - Main screen - Spectrum live display Stopped - Main screen - Spectrum display - Result screens (see 3.3.5) 3.3.4 Measuring To start the nuclide identification, press the “Info/▲” button. Display with automatic measuring time: Count rate “Info/▲” key Indication auto- matic measuring “▼”-Key toggles count time rate and live spectrum Percent complete display RadEye SPRD-GN DB-103 E 3-15 Pi/Iw/Ff 25.08.2016  Display with fixed measuring time: Preset measuring Indication fixed time measuring time Action of “►” key With fixed measuring time the preset time can be increased by pressing the “►” key. The recommended count rate for nuclide identification is be- tween 75 and 5000 cps. If the count rate is lower or higher a message in the top line is displayed. Low rate High rate “On/▼”-Key toggles between measuring and live spectrum display: 3-16 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 3.3.5 Result Once the measurement is finished the result is displayed (nu- clide, nuclide type and confidence of the identification): Nuclide type Explanation IND Industrial MED Medical NRM NORM (Naturally Occurring Radioactive Material) SNM Special Nuclide Material For confidence levels below 6 a repetition of the measurement with a longer acquisition time, i. e. improved statistics, is rec- ommended. By pressing the “On/▼”-Key more result pages are available: 1st click: Graphical spectrum display RadEye SPRD-GN DB-103 E 3-17 Pi/Iw/Ff 25.08.2016 2nd click: Peak energy information 3rd click: Spectrum information 4th click: Extra measuring time 5th click: Identification result If “Autosave” is active the spectrum is saved at the end of measurement. If “Autosave” is deselected the spectrum can be saved manually by pressing the right button in display “Spec- trum information”. See also chapter 3.4.6. 3-18 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  1 2 3 4 5 1 Number of saved spectrum 2 Timestamp 3 Mean value count rate gamma 4 Mean value count rate neutron 5 Measuring time In display “Energy lines” more information about identified peaks is available by pressing the right button (if enabled): 1st click: Error information Deviation of found peak po- sition from assumed nuclide peak 2nd click MCA channel information 3rd click Peak counts RadEye SPRD-GN DB-103 E 3-19 Pi/Iw/Ff 25.08.2016 4th click Relative signal strength 5th click FWHM (Full width at half maximum) information, if available 6th click Energy information nominal energy of assumed peak 3.3.6 Save spectrum If option “Autosave” is not active a spectrum is saved in the Home screen via the “Save” button (►) 3-20 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 If more than 200 spectra are stored and the option "Overwrite oldest spectrum without warning" is not active, the user is prompted to confirm overwriting an old spectrum. 3.3.7 View saved spectrum With menu item “View spectrum” in sub menu “Nuc ID Set- tings” a saved spectrum can be loaded and displayed. Edit value by pressing ▲/▼ keys, select digit by ◄/ ► keys. After entering digits and leaving low digit with the ► key the data is loaded and nuclides are identified. The result is dis- played in the same way as described in chapter 3.3.5. 3.3.8 Trigger list With menu item “Trigger list” in sub menu “Nuc ID Settings” certain nuclide can be excluded from nuclide identification. The trigger list can be edited with PC-program “RadEye_SPRD.EXE” (see 8.4.5). 3.4 Menu functions To enter the operating menu, press the “Menu” key. Scrolling through the single menu options is effected by the “▲/▼” arrow keys. The display returns to its initial default setting in case no key has been activated for more than 10 seconds. RadEye SPRD-GN DB-103 E 3-21 Pi/Iw/Ff 25.08.2016 A , when found behind some menu options, means that the respective function is active. 3.4.1 Main menu The main menu offers the following displays: The above illustration depicts all main menu options for the standard configuration. Using the PC-Software and an interface adapter, the functions can be hidden. This allows the user to be given only the func- tions necessary to accomplish his measurement duties, thus simplifying the handling considerably. To select a menu option or a sub menu, highlight the desired action and press the left key The meaning of the Menu key may change with the selected menu. The meaning is shown on the bottom of the display. 3-22 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Change: Edit Alarm values Off, On: Switching a function on and off Select: Select a default display mode Yes: Confirmation of an action Exit: Exit menu In Change menu the Up-/Down arrow keys are used to change a digit of an alarm value. MAIN MENU DESCRIPTION OF THE FUNCTION OR SUB DISPLAY MENU ACTIVATED BY THE LEFT KEY Switch off RadEye is switched off. Time and stored data and spectra are maintained. Nuc ID settings SUB MENU Nuc ID settings See 3.4.2 Text Info Displays the text info stored in the RadEye Show Alarm Display of alarms stored in alarm log. Alarm Indication SUB MENU ALARM INDICATION See 3.4.3 Settings SUB MENU SETTINGS See 3.4.4 Clear Dose Gamma Sets the measured gamma dose to zero and resets Over- load messages. Edit Alarms SUB MENU EDIT ALARMS See 3.4.5 Scaler Parameter SUB MENU SCALER PARAMETER See 3.4.6 Operation Mode SUB MENU OPERATION MODE See 3.4.7 Measuring unit G SUB MENU MEASURING UNIT GAMMA enables the following measuring units: - cpm - cps - rem/h - R/h - Sv/h - Gy/h See 3.4.8 RadEye SPRD-GN DB-103 E 3-23 Pi/Iw/Ff 25.08.2016 Measuring unit N SUB MENU MEASURING UNIT NEUTRON enables the following measuring units: - cps - cpm See 3.4.8 Backlight Backlight always on/Backlight extinguish after 10 s. Scaler Backgnd SUB MENU SCALER MODE BACKGROUND See 3.4.9 3.4.2 Sub menu “Nuc ID Settings” Sub menu “ID settings” description of the function Selection of measurement mode: - Automatic: measurement with time based on dose rate, can be limited in the user configuration (see 8.4.4) - Preset Time: measurement with fixed time. Set under Capture Type “Capture Settings” - - Cycle&Save: periodic ID measurements are performed with the selected preset measurement time and cycle time. The measured spectra are stored at the end of each ID. - Time (for measurement with fixed time) Capture Settings - Cycle (for Cycle&Save Mode) - Waiting (wait time after measurement start) If selected, the device starts a nuclide ID once Auto ID CR a predefined count rate threshold has been exceeded 3-24 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  If selected, the device starts a nuclide ID once Auto ID NBR artificial radiation has been detected (NBR-alarm) Thresholds for gamma dose rate and neutron count rate can be Set ID warning set which trigger a special text warning at the end of a nuclide ID Clear spectra Deletes all saved spectra Send spectrum Sends the current spectrum in XML-N42.42 format. Backgnd spectrum Starts a background measurement If selected, the RadEye saves the spectrum after measurement Autosave is completed. This setting is irrelevant for Cycle&Save mode. Load spectrum Loads a saved spectrum (see 3.3.6) Trigger list Select a predefined trigger list for nuclide identification 3.4.3 Sub menu “Alarm indication” SUB MENU “ALARM DESCRIPTION OF THE FUNCTION INDICATION” Sound The audible indication is enabled / disabled The Alarm LED is enabled / disabled for both gamma and LED neutron LED. Vibration The vibration alarm is enabled / disabled If enabled, the backlight turns on for 10s if an alarm is detect- LCD LED ed. RadEye SPRD-GN DB-103 E 3-25 Pi/Iw/Ff 25.08.2016 If sound and vibration alarm are disabled at the same time a cross is displayed in the upper right corner. 3.4.4 Sub menu “Settings” The above illustrations depict all main menu options for the submenu “Settings”. 3-26 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 SUB MENU DESCRIPTION OF THE FUNCTION “SETTINGS Switching between battery type Battery and NiMH. It is used Battery type for the correct warning of low battery. If activated, the instrument sends a data string periodically to Autosend the infrared port. This is used for radio transmission units. Enabling and disabling of single pulse indication. Activation is Single done by audio keys (right button and top button). Enabling and disabling of audible radiation intensity. Activa- Finder tion is done by audio keys (right button and top button). In this mode the measurement value of the dose rate is dis- Cross-mode played together with the bar graph of the cps value. Set Date/Time Sets date and time of the real time clock. Language Sets language to English, German or French This menu item enables/disables the BTcom cover. It is only Bluetooth visible when the BTcom cover is present Lu-Adjust Setting the detector amplification Enabling and disabling of automatic adjustment and supervi- Autoadjust sion of Bias voltage Contrast Adjusts the contrast of the LCD display Enables or disables the training mode for a Test Adapter Training 42506/3015 RadEye SPRD-GN DB-103 E 3-27 Pi/Iw/Ff 25.08.2016 3.4.5 Sub menu “Edit alarm” SUB MENU “EDIT DESCRIPTION OF THE FUNCTION ALARM” Edits the alarm threshold 1 and 2 of count rate gamma (meas- uring unit cps, cpm and cross mode). If the measuring unit is Al. count rate G set to R/h, rem/h or Sv/h the menu item will be renamed to “Al. dose rate G”. Al. count rate N Edits the alarm threshold 1 and 2 of count rate neutron Alarm NBR If selected, the NBR function is active (see 5.2) Alarm dose G Edits the alarm threshold 1 and 2 of accumulated dose gamma. Forces the RadEye to start a new background measurement New background (ratemeter) If active, the vibrator, sound and LED are changing their Rated Alarm intensity with the radiation level intensity. 3.4.6 Sub menu “Scaler parameter” SUB MENU “SCALER DESCRIPTION OF THE FUNCTION PARAMETER” Preset time mode is used to measure a predefined time. The PresetTimeMode time can be modified with menu item “Set time/count” Preset count mode is used to measure a predefined number of PresetCntMode counts. The counts can be modified with menu item “Set time/count” 3-28 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  “Set wait time” is used to edit a wait time before the scaler Set wait time measurement is started. (see 3.2.3) “Accum. Counts” means the RadEye displays the accumulated Accum. Counts counts instead of the mean value. This option is only effective with measuring units “cps” or “cpm”. With “Auto restart” the RadEye restarts automatically the Auto restart measurement Set time/count “Set Time/Count” edits the preset time and counts. 3.4.7 Sub menu “Operation mode” This submenu is used to select between ratemeter (see 3.1), scaler (see 3.2) and Nuc ID (Nuclide identification, see 3.3) mode. The “” shows the active mode. 3.4.8 Sub menu “Measuring unit” (G / N) Measuring unit Gamma: Measuring unit Neutron RadEye SPRD-GN DB-103 E 3-29 Pi/Iw/Ff 25.08.2016 This submenu is used to select the measuring unit for rateme- ter and scaler measurements. Cps is the recommended measur- ing unit. 3.4.9 Sub menu “Scaler Backgnd” The above illustration depicts all main menu options for the submenu “Scaler Backgnd”. SUB MENU “BACK- DESCRIPTION OF THE FUNCTION GROUND” Edits the preset time and counts for Gamma and Neutron used Set Parameter for background measurement (see 3.2.4) Start Meas. Performs a background measurement If selected, scaler values are displayed with background sub- Scaler netto traction 3.5 Alarm thresholds There are two alarm thresholds each allocated to dose gamma, dose rate gamma, count rate gamma and count rate neutron. Two rate alarm thresholds corresponding to the chosen basic display mode are active. The two active rate alarm thresholds are marked at the bar graph (See 3.1.1 and 3.7). Additionally the two gamma dose thresholds are active. 3-30 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 In order to avoid dose alarms while using the instrument ex- clusively as a rate meter, the dose alarms can be set to the maximum level. It is possible to configure the alarm threshold 2 for dose rate as a safety alarm via the PC-program RadEye_SPRD.EXE. In that case the dose rate alarm threshold 2 is always active regardless of mod or units. Configuration of the alarms is possible via infrared interface (chapter 8.4) or via the menu. As to the alarm activation, please also read chapter 4.3. 3.6 Gamma alarm threshold based on the rela- tive standard deviation (sigma threshold) In case the sigma value is set between 2 and 9, the first gam- ma alarm threshold is calculated every second from the count rate of the background rate meter according to an empirical equation referring to the usage of the pager in a stable natural background. Thus the actual alarm threshold adjusts itself automatically to the existing background radiation level. The actual setting of the alarm threshold 1 can be observed at the bar graph threshold mark (triangle) if the gamma only display is selected. At instrument start, the background rate meter starts with its maximum value of 100 cps, reaching its final value after 30 seconds. RadEye SPRD-GN DB-103 E 3-31 Pi/Iw/Ff 25.08.2016 Using the menu option Alarm Cnt. Rate, the exact value of the alarm threshold currently valid at the respective back- ground can be displayed. After acknowledgement of a sigma-alarm, the background ratemeter is set to the actual count rate. Accordingly the alarm threshold is increased and is fine adjusted during the next 8 seconds after acknowledgment. For this time the message “Learning” together with a progress bar is displayed. Alarm 2 is always referring to the total count rate without con- sideration of any learned background. Recommended Sigma values: Sigma = 6 enables almost false alarm free searching in areas with a fairly constant radiation background. 3.7 Setting alarm thresholds The menu options Al.count rate G , Al.count rate N, Al. dose rate G and Alarm dose G from the sub menu allow the alarm thresholds to be modified. For this setting, the user has 255 seconds time. Changing the value is effected by pressing the left (Change) button if the corresponding “Alarm” is selected: To increment the number, press the ▲/▼arrow keys. To go on to the next digit or to quit the edit mode, menu use ►/◄arrow keys. 3-32 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Once the last number has been set, quit the editing mode by pressing the “Exit”-key. Then, the value set is saved and the unit returns to the basic display. Please note: Using the unit cpm will allow setting the gamma alarm with a multiple of 60 cpm and the neutron alarm with a multiple of 6 cpm. Example: The dose alarm threshold must be changed. Press “Menu” key, and ▲/▼arrow keys until Edit alarms is select- ed Then enter the sub menu by press- ing the “Select” key. Press the up/down arrow keys until Alarm dose G is selected. Then enter the sub menu by press- ing the “Select” key. Edit value by pressing ▲/▼ keys select digit by ►/◄ keys. Pre unit “”, “m” may be chosen as well. RadEye SPRD-GN DB-103 E 3-33 Pi/Iw/Ff 25.08.2016 Leave the last digit with the ► arrow key: Confirm storage of edited value pressing “Yes” 3-34 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Example: The sigma value for the gamma count rate alarm threshold must be changed. Press “Menu” key, and ▲/▼ arrow keys until Edit Alarms is select- ed Then enter the sub menu by press- ing the “Select” key. Press “Menu” key, and ▲/▼ arrow keys until Al. Count rate G is selected Then enter change menu by press- ing “Select” key. Edit value by pressing ▲/▼ keys Sigma-Alarm: 0: off: Al.1 can be set as a constant threshold. Sigma-Alarm 2....9: Al.1 is calcu- lated from the actual background. Actual value is displayed. Save settings by leaving the menu. The set points of the actual alarm thresholds are seen at the marks on the intensity bar scale. The upper mark shows alarm threshold 1, the lower mark shows alarm threshold 2 RadEye SPRD-GN DB-103 E 3-35 Pi/Iw/Ff 25.08.2016 4. Operation 4.1 Audible single pulse indication and finder mode With the single pulse indication being selected, every pulse of the detector generates a short audible signal emitted by the beeper. An audible alarm signal caused by exceeding the alarm thresh- old is not given while single pulse indication is active. The single pulse indication must be enabled in the menu. It is activated and deactivated by two times pressing the right or top button: Indication single pulse In the Finder mode, the sound frequency depends on the pulse rate of the detector. The more detector pulses above the count rate that is present at the moment of the activation of the finder mode are captured by the detector, the higher the tone. The finder mode must be enabled in the menu. RadEye SPRD-GN DB-103 E 4-1 Pi/Iw/Ff 25.08.2016 It is activated and deactivated by two times pressing the right or top button: Indication finder mode 4.2 Rated alarm A special audible sound “Rated Alarm” can be enabled in the sub menu “Edit alarm”. If active, the vibrator, sound and alarm LED are changing its intensity with the gamma count rate level (above learned background) once the first gamma alarm threshold has been exceeded. 4.3 Alarm indication Each time the first alarm threshold is exceeded, the alarm de- vices beeper, LEDs and the vibrator become active, if they are enabled. Sounder LED red LED Vibration blue Count Rate and 1s high pitch 1s on off 1s vibe Dose Rate tone 1s off within 2s Alarm1, 1s low pitch NBR: Balanced tone alternat- or ing NBR disabled Count Rate and NBR Sound 250ms off 2 vibes Dose Rate on within 1s Alarm1, 250ms NBR: Artificial off 4-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Count Rate and 4 short pulse 250ms off 2 vibes Dose Rate in 1s fol- on within 1s Alarm 2 lowed by a 250ms Or 1s pulse high off Safety Alarm pitch tone Neutron Neutron off 1s on 1s vibe Alarm 1 Sound 1s off within 2s Neutron Neutron off 250ms 2 vibes Alarm 2 sound on within 1s 250ms off Dose alarm 1 High pitch off on on Dose alarm 2 tone Except for the dual line display, additional text info is provided. Example (alarm by Ba-133): Gamma only page Dual display page The alarm tone and vibrator are acknowledged by a short key depression of the right arrow pushbutton, the LED remains pulsing. The alarm is extinguished, when the first alarm threshold of the neutron and the gamma measurement value is remained under. RadEye SPRD-GN DB-103 E 4-3 Pi/Iw/Ff 25.08.2016 With the PC-program “RadEye_SPRD.EXE” the alarm threshold 2 of the dose rate can be configured as a safety alarm (see 3.5). 4.4 Alarm display indication The status line alternates between three different alarm mes- sages according the table below. Gamma count rate Neutron NBR Gamma or dose rate Neutron 2 Dose LOW/MID/HIGH Neutron 1 Safety or ART Alarm 2 BALANCED or Alarm 1 NORM 4-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 4.5 Additional information In addition to the basic display, using the menu options, re- quests for further information can be started such as e.g. the setting of the operation mode and the enabling and disabling of the various alarm indicators. Using the upper arrow key, additional measuring values are displayed (see chapter 3.1.2). 4.6 Alarm latching Via PC-program it is possible to configure an alarm latching. Alarm latching means the alarm is stored for the configured time from 0 s (= off) to 9999 s. This latching allows the user to get an alarm notification even in case of fast moving sources, in noisy environments or simi- lar scenarios. A latched alarm is indicated by an “M” near the alarm indica- tor. When the alarm is acknowledged the RadEye returns to normal operations. Latching indication RadEye SPRD-GN DB-103 E 4-5 Pi/Iw/Ff 25.08.2016 4.7 Show alarm By selecting the menu item “Show alarm” the alarms stored in the alarm log are displayed together with the NBR information and time of alarm. Stored alarm with NBR information Time of the stored alarm By pressing the up and down arrow keys you can scroll through the alarm log. By pressing the right button the display returns to the menu. 4.8 Text Info Via PC program “RadEye_SPRD.EXE” it is possible to place text information in the RadEye SPRD-GN. This text infor- mation can be displayed with the menu function „Text Info“. 4-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 4.9 Set date and time Alternatively to the setting of date and time by the PC- program, these changes can as well be performed via the menu function Settings → Set Date/Time. The format YYYY-MM-DD hh:mm is used. The fields are selected with the keys right/left. With the keys up/down the Year, month, day, hour or minute can be changed. After set- ting the date and time the real time clock is set and is used for alarm logbook, history and spectra time stamp. 4.10 Battery type Selection of battery type: Rechargeable NiMH or non- rechargeable alkaline batteries. It is needed for a correct low battery warning. Battery type “Alkaline” Battery type “NiMH” If the battery voltage is below the configured threshold the following warning appears: RadEye SPRD-GN DB-103 E 4-7 Pi/Iw/Ff 25.08.2016 The beeper generates a tone sequence every 30s. This acoustic warning can be suppressed by pressing the alarm acknowledge key. After 8h this warning comes up again. The battery needs to be changed. However, the RadEye can still be operated for several hours. If the battery voltage falls below 2.1 V, the battery symbol starts flashing. An acoustic warning is generated every 8s and can’t be acknowledged. The battery needs to be changed as soon as possible. 4.11 Lu-Adjust A “Lutetium Test Adapter” (see 12.3) containing 36 g Lu2O3 is recommended to perform the following tests. Since the primordial natural isotope Lu-176 (36 Billion years half-life) is not part of the normal background radiation, it is identified by the NBR-circuitry as non-NORM (MID energy) isotope. Thus for training purpose the response of the RadEye SPRD- GN to man-made gamma emitting radioactivity can be field tested with a natural and license free ceramic material. Lu-176 must be recognized by the NBR as described in chapter 5.2. 4-8 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 As well, the test adapter can be used to quickly verify the proper function of the nuclide ID – both in the field and for training purposes! Typically a Lu-176 ID is indicated after less than 60 s Furthermore this test adapter can be used for verification of the internal detector high voltage. Start the Lu-Adjust via submenu “Settings” -> “Lu-Adjust” without the test adapter. During the first seconds the RadEye checks the background. Please note that the background must be smaller than 50 cps. Date and time of the last successful Lu-Adjust When the background measurement is complete the user may place the test adapter: RadEye SPRD-GN DB-103 E 4-9 Pi/Iw/Ff 25.08.2016 Place the Lu-adapter. The RadEye recognize the test adapter automatically and starts the routine. No further action is required. The status of the adjustment is shown in the display. Depending on the count rate the test takes a few minutes and ends with an acoustic signal. The result is displayed. The test ends with the message “-- READY --” if the Energy error is between ±1%. Pressing the /Info button the user is asked to perform a neu- tron alignment (see 4.11.1). 4-10 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 A higher energy error requires a bias adjustment. If the high voltage is outside of adjustment range the message “Inspection required” is displayed. In this case or if the Lu-Source is not recognized automatically the instrument should be send to Thermo Fisher Scientific Messtechnik GmbH, Service Center or to Columbia U.S. Depot Service for inspection. Bias adjust required Failed Lu-Test The bias adjust is started by pressing the /Info button. After setting the correct bias voltage the following screen is dis- played: Pressing the /Info button the user is asked to perform a neu- tron alignment (see 4.11.1). RadEye SPRD-GN DB-103 E 4-11 Pi/Iw/Ff 25.08.2016 4.11.1 Neutron alignment By pressing the /Info button the user is asked to perform a neutron alignment: Start the alignment with a press on the /Menu button. Press- ing the  button will stop the alignment process. This test can be performed using a low activity moderated neutron source (AmBe or Cf-252) – if available. However, due to the high neutron sensitivity of the CLYC-detector, the neu- tron alignment can as well be performed by leveraging the presence of natural neutron radiation which is part of the sec- ondary cosmic radiation. In order to minimize the required time, the RadEye SPRD-GN should be placed in a location with minimal shielding of the cosmic radiation (less than about 100 g/cm² or 50 cm of concrete). Typically the alignment pro- cess requires 5 to 15 hours and can e.g. be performed over- night. The RadEye SPRD-GN compares the measured mean neutron pulse height with the stored factory set reference val- ue. The deviation is saved and used for further auto adjust measurements. A message is displayed at the end of the alignment session, whether any inspection of the instrument may be required. 4-12 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 During the Neutron alignment measurement it is strongly rec- ommended to store the instrument in a temperature stable en- vironment without any additional presence of radioactive sources. 4.12 Auto adjust If enabled, auto adjust works as a background task during normal operation of the RadEye SPRD-GN. The RadEye SPRD-GN permanently monitors the pulse height of the cos- mic neutron background events and performs a continuous fine adjustment of the detector amplification in order to correct any eventual long-term drift of the detector performance. Auto adjust is suspended while - The temperature is below 5°C (41°F) - The temperature is more than 35°C (95°F) - Gamma count rate is more than 500cps - Neutron count rate is more than 5cps - During Lu- and Neutron peak adjust - During ID measurement - During high variations of temperature - Training mode is enabled RadEye SPRD-GN DB-103 E 4-13 Pi/Iw/Ff 25.08.2016 Working auto adjust is displayed with a flashing symbol in the screen: Auto adjust 4.13 Key Lock By pressing the “▼/On” key for at least one second a notifica- tion screen is displayed: Keep the button pressed to lock the key pad: 4-14 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Unlocking is performed according to the LCD instructions upon pressing any key: Press left key first, then lower key and then right key. This feature can be disabled using RadEye_SPRD.exe. RadEye SPRD-GN DB-103 E 4-15 Pi/Iw/Ff 25.08.2016 5. Detection of gamma sources To detect hidden gamma sources, it is recommended to use the count rate mode or the cross-mode. Thus the instrument reacts much more quickly to an increase in the radiation intensity. The value set for the alarm threshold is either a fixed alarm threshold being slightly higher than the occurring display val- ues observed over a longer period of time or a sigma thresh- old, amounting to 4 to 6 sigma according to the false alarm frequency desired. Subsequently, the operator passes the ob- ject while keeping thereby the distance between the monitor and the object to be checked as small as possible. With an alarm occurring, the operator should move the in- strument while observing the display in order to localize the position of the source. Please note that the alarm can occur up to one or two seconds after passing the nearest distance to the source. Please refer to chapter 6 for the detection of neutron sources. 5.1 Gamma Background During operation in count rate mode with sigma  2 the back- ground radiation is always monitored and a smoothed, low pass filtered value is computed. This value, limited to 100 cps, is used for the calculation of Alarm 1 if the sigma alarm is RadEye SPRD-GN DB-103 E 5-1 Pi/Iw/Ff 25.08.2016 activated. During sigma alarm the monitoring of background is suspended. On acknowledgement of an alarm 1, provided that no artificial radioactivity has been detected (NBR-alarm, see chapter 5.2), the background ratemeter is set to the actual count rate and back- ground learning continues. 5.2 NBR (Natural Background Rejection) For this additional feature the ratio between the detected gamma energies is used to indicate unusual radiation condi- tions. Three energy channels for low-, mid- and high range energy are monitored and compared with three thresholds. If the channels exceed the adjustable (via PC-program) thresh- olds, an alarm is released. The alarm tone and vibrator can be acknowledged by a short key depression. The NBR-indicator can be activated by the menu function or the PC-program RadEye_SPRD.EXE. The purpose of this additional alarming algorithm is to allow the setting of a significantly lower detection level (compared to the gross count rate alarm) for a vast number of artificial gamma isotopes: Especially in an urban environment the background count rate varies from a few cps up to 50 cps or even more. Thus operating on an Alarm 1 level of less than 20 cps, natural background variations can cause a lot of annoying false alarms. Using the NBR feature however, radiation fields with an energy distribution that is sufficiently different from the natural environment can trigger an alarm at 20 cps or even below. 5-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 A typical detection limit for a background of 0.05 µSv/h (5 rem/h) is about 0.004 µSv/h (0.4 µRem/h) for Am-241 and 0.008 µSv/h (0.8 rem/h) for Co-57. Fast initial alarm indication is achieved by the automatic ad- justment of the Alarm 1 gross counting level according to the 5 – 6 sigma setting (if the set minimum value is exceeded). Depending on the selected NBR-message configuration, artifi- cial radioactivity is displayed and summarized as “artificial” or grouped into “LOW ener.”, “MID ener.” and “HIGH ener.”. The following list shows the expected response to a number of radioactive sources. A count rate or dose rate alarm without any detected energetic anomaly is indicated as “Balanced” or “NORM” depending on the selected NBR-message configuration. Alarm displays with activated NBR alarm: Man-made radioactivity with main energies up to approxi- mately 150 keV. RadEye SPRD-GN DB-103 E 5-3 Pi/Iw/Ff 25.08.2016 Man-made radioactivity with main energies up to approxi- mately 600 keV. Man-made radioactivity with main energies above 600 keV Natural radioactivity (NORM-Material) 5-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 6. Indication of neutron sources The RadEye SPRD-GN meets and exceeds the alarm sensitivi- ty requirements for neutron radiation according to ANSI 42.48. A neutron alarm is indicated by a blue LED, a special audible tone and screen messages. The RadEye SPRD-GN neutron detection capability depends significantly on whether or not the instrument is worn in the belt holster 42506/7046. In the holster, attached to the user’s body, the sensitivity to fast neutrons is typically 10 times higher than in the case the in- strument is held in the hand. Thus the RadEye SPRD-GN, worn as a pager, may indicate a neutron alarm with the blue LED and neutron sound, but once the pager is taken out of the holster, the neutron indication may disappear after a few sec- onds. In such case the RadEye SPRD -GN pager should be held close to the body or put back into the holster in order to see whether the neutron alarm can be reproduced. For active search of neutron sources, it is recommended to put the RadEye SPRD-GN into a moderator-shoe 42506/7110 or 42506/7114. RadEye SPRD-GN DB-103 E 6-1 Pi/Iw/Ff 25.08.2016 Neutron alert in ratemeter mode Neutron alert as ID-Result Using the recommended and factory set neutron ratemeter time constant of 5 seconds, an alarm threshold of 0.2 cps typi- cally provides false alarm-free operation. In locations with elevated neutron background (e.g. higher altitude), the alarm threshold may need to be set slightly higher. 6-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 7. Functional test The radiation meter performs continuous self-check routines. A complete failure of the detector will be detected in 30 s and will be indicated on the LCD and be announced by the beeper. The same applies to the battery voltage. 7.1 Functional test To carry out a simple test, shortly press any key for two times. The first key press turns the backlight illumination on without any other action. With the second key stroke a short audible pulse has to be released (if not disabled via PC configuration). The heart symbol next to the battery indicator must be “beat- ing”. This indicates that the cyclic tasks as calculating meas- urement values and checking for alarm thresholds are active. 7.2 Failure indication In case of a failure or if the battery voltage is low, the beeper generates a tone sequence every 30 s. The corresponding failure message is displayed in the LCD: RadEye SPRD-GN DB-103 E 7-1 Pi/Iw/Ff 25.08.2016  Error bias voltage generation No neutron pulse within the given timeframe. The time out can be set with RadEye_SPRD.exe No gamma detector pulse within 30 seconds, EEPROM with calibration data shows EEPROM Read or EEPROM Write error. A Watchdog Error indicates that the micro controller has problems to work on its tasks in a given timeframe. Reasons are strong electromagnetic pulses, firmware errors or hardware issues. 7-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 7.3 Overload indication On dose rates of more than 25 mR/h (250 Sv/h) an overload indication is given: The dose value is marked with an overload indication, if a dose rate overload occurred since the last dose reset. Neutron count rates of more than 10000 cps lead to a neutron overload. Both overload messages of the neutron and the gamma channel can be displayed by the RadEye SPRD-GN: RadEye SPRD-GN DB-103 E 7-3 Pi/Iw/Ff 25.08.2016 7.4 Temperature warning The maximum temperature of the RadEye SPRD-GN is 50°C (122°F). If the temperature higher than 50 °C the RadEye shows the following screen: By pressing the right button, the user may switch off the RadEye to avoid false alarms. With a key stroke on the left button the RadEye continue with the operation and a rolling warning message is displayed in the top line: 7-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 8. PC configuration The configuration of the RadEye SPRD-GN via Windows software requires optional Thermo Scientific hardware and software. 8.1 Ways to connect to a PC A RadEye unit can be connected to a PC either by serial inter- face, USB interface or by Bluetooth TM 2. 8.1.1 Wireless connection via Bluetooth Details about the Bluetooth communication are provided through the manual DB-076 E delivered with the optional Bluetooth battery cover. Please note that the connected PC must be equipped with a Bluetooth interface as well. 2 Bluetooth is a trademark of Bluetooth SIG, Inc., Bellevue, Washington, U.S.A. RadEye SPRD-GN DB-103 E 8-1 Pi/Iw/Ff 25.08.2016 8.1.2 Cable connection It is recommended to use the optional RadEye desktop holder to align the RadEye’s IR window with the IR window of a connection cable. The optional serial adapter cable is used to connect to a RS232 port of a PC. This serial port is selected directly in the RadEye_SPRD.EXE software (see also chapter 8.3.3). Alternatively, the optional USB connection cable is used to connect to an USB port. Using the USB connection requires the installation of driver software that will generate a virtual serial port that can be se- 8-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 lected in the RadEye_SPRD.EXE software. The driver is de- livered on the RadEye_SPRD.EXE software installation CD ROM. Installation of a connection cable Using the hardware provided and without exerting too much force and attach the connections of the adapter cable to the PC and to the RadEye desktop holder. 8.2 Installation of the optional RadEye_SPRD.EXE software Open the file “Setup.EXE” on the Software installation CD Rom and follow the installation guideline. The installation generates a RadEye_SPRD.EXE Icon on the desktop. 8.3 Start RadEye_SPRD.EXE Once the RadEye_SPRD.EXE program has been started, de- vice parameters are displayed on the screen. RadEye SPRD-GN DB-103 E 8-3 Pi/Iw/Ff 25.08.2016 8.3.1 RadEye SPRD-GN Device Parameters The Frame "RadEye SPRD-GN" contains the unit's serial number and version number of the software. Click on the Read button, the Parameters of RadEye SPRD-GN will be read out from the device and shown in the Frame. Figure 8-1: Main Window 8.3.2 Measurements After pressing the button “Read Values” the current Count rate, dose rate and dose are displayed in this frame. With button Start the measured value is read from the unit at a certain polling interval. Use the scroll bar or the buttons be- 8-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 neath the "polling interval" field to define the polling interval. You can select a value between 1 and 3600 seconds. The counter and the dose rate can be displayed numerically and graphically. Click on the “Graphic….” Button. A diagram is displayed that gives a representation of the counter and dose rate values versus the time. The current measured value is added at the right-hand side, and the diagram is shifted to the left. Up to 100 measured val- ues can be represented. The graduation of the ordinate is au- tomatically adjusted to the measured values supplied by the unit. Figure 8-2: Measurement graphics RadEye SPRD-GN DB-103 E 8-5 Pi/Iw/Ff 25.08.2016 Creating a Measurement File The actual measured values Count rate and Dose rate that are shown in the "Measurement" display field can be stored in a measurement file. To do this, open the File menu, click on Open Logfile..., and enter path and name. The file is stored with the file name ex- tension ".log". If another file of the same name exists, the system asks wheth- er that file shall be overwritten or the new measured data shall be appended to the existing data. Once you have pressed OK to confirm the entries, the meas- urement logfile is created and the polling measured data is stored in the scan interval you have defined. An open meas- urement file is indicated by the name and the path of the measurement logfile that appears in the top right-hand corner of the window. To terminate data storage, open the File menu and select the Close Logfile menu item. No further data is recorded. Open the File / View Logfile... menu to view the measurement logfile. For training and demonstration a prior recorded logfile can be replayed by opening Replay logfile. 8-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 With the buttons Start and Stop together with the polling in- terval the replay can be controlled. Close Replay switches back to accessing measurement values via infrared interface. The measurement logfile is an ANSI text file with columns that are separated by. This enables this file to be read easily into other programs (such as Excel) where the data can be processed. The first line of the measurement logfile contains the unit name, the file name, and the path. Serial number and Device identification are specified on the second line. Date and time of the measurement are specified in the columns under the field names "mm.dd.yy" and "hh:mm:ss". The time setting corresponds to the PC system time. The "Counter" column contains the numerical value of the counter measurement. The "Unit" column informs about the unit. The "Dose Rate" column contains the numerical value of the dose rate measurement. The "Unit" column informs about the unit (Sv/h or R/h). 8.3.3 Select serial interface Via Configuration / Com settings... menu another window is opened from which you may select the corresponding inter- face. An error message is displayed if the interface is not available. RadEye SPRD-GN DB-103 E 8-7 Pi/Iw/Ff 25.08.2016 8.4 Configuration On the Configuration / RadEye SPRD-GN… menu, the fol- lowing parameters can be modified:  Operating mode  Unit  Basic display  Time interval of the history  Acoustic indication  Alarm level for all basic displays  Signaling types  Additional surveillances  active menu functions 8.4.1 General configuration Figure 8-3: General configuration 8-8 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 On the “Generals“ tab, the user may set menu language, the time interval for the history memory (1...43200s), the acoustic rate indication (single pulse, finder, 4.2) the type of battery (4.10) and temperature unit (°C or °F). Furthermore the assignment of keys can be configured: Figure 8-4: Button configuration The frame “Info Button” configures the assignment of the “▲/Info” button. See also chapter 3.1.2. The frame “On Button” configures the assignment of the “▼/On” button. See also chapter 3.1.3. The frame “Nuclides ID Result” configures the assignment of the “▼/On” button for the result screen after ID measurement. See also chapter 3.3.5. RadEye SPRD-GN DB-103 E 8-9 Pi/Iw/Ff 25.08.2016 8.4.2 User defined text Figure 8-5: User defined text On the tab “Text” it is possible to store a text in the RadEye. In the field “Text Info” the user can define 4 lines text, which can be displayed on the LCD by the RadEye. The “Text Field” stores a text with up to 200 characters in the RadEye. This text cannot be displayed by the RadEye. 8-10 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 8.4.3 Mode configuration Figure 8-6: RadEye mode On the “Mode” tab, the user may set the operation mode, the physical units for scaler and ratemeter measurements. Scaler: In this frame different parameters used for scaler measurements can be set. See 3.2 Scaler Background: This frame is used to edit parameters for scaler background measurement Ratemeter: If background subtraction is active the back- ground gamma and neutron rate in frame scaler background is subtracted. Auto Adjust enables or disables the automatic neutron peak stabilization. See 4.12 RadEye SPRD-GN DB-103 E 8-11 Pi/Iw/Ff 25.08.2016 Time Out: Here the time out for the neutron channel can be set. If no detector pulse within configured time is detected “Neut.Err.” is triggered. See 7.2 Filter Time Neutron: With filter time set to 0s the ADF is used. If the time constant is set to 1s…60s a linear ratemeter is used to filter the neutron count rate. 8.4.4 Nuclide ID Figure 8-7: Nuclide ID settings Except for the maximum measuring time that limits the auto measuring time and Auto ID parameters, all settings can be changed on the instrument as well (unless blocked). 8-12 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Furthermore the following parameters for Nuclide ID meas- urement can be modified:  Capture type: o Automatic measuring time: if active, the RadEye cal- culates the measuring time based on count rate o Cyclic & Save: with this option the RadEye performs a periodic measurement. Please note: the cyclic meas- urement time must be greater than the measuring time. o Preset time: ID measurement with a fixed time  Capture settings: o Time: Measuring time used for capture type Preset Time o Cycle: Cycle time used for capture type Cycle & Save o Waiting: Waiting time before a ID measurement starts  Auto ID CR: If active, an ID measurement is triggered if the “Start” rate is exceeded. ID measurement is paused, when the count rate fall below the “Stop Rate”. The user may stop the spectrum accumulation at any time. The length of the pause is limited to 1 min. After that time, the instrument falls back into the normal operation mode. If Spectrum Autosave is active, the spectrum is stored automatically.  Auto ID NBR: If active, an automatic ID measurement is performed for NBR alarm. For details see Auto ID CR.  Spectrum Autosave: if active the spectrum will be saved automatically after ID.  Overwrite oldest spectrum without warning: if the memory is full old spectra will be overwritten without us- er request. RadEye SPRD-GN DB-103 E 8-13 Pi/Iw/Ff 25.08.2016 8.4.5 Trigger list Figure 8-8: Trigger list Here the user can manage the trigger list, used for nuclide identification. “Add” and “Delete” is used to add and delete entries in the trigger list. “Up” and “Down” move the entries in the trigger list. “Edit…” opens another window where the nuclides can be managed. 8-14 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Figure 8-9: Edit nuclide trigger list 8.4.6 Alarm configuration Figure 8-10: Alarm setting RadEye SPRD-GN DB-103 E 8-15 Pi/Iw/Ff 25.08.2016 The “Alarm” tab offers the user the possibility of making the alarm settings for the single basic displays. Furthermore, the options on this tab allow beeper and additional alarm monitor- ing processes to be configured. If the RadEye SPRD-GN is mainly used as an alarm device wearing at the belt, it is recommended to set an alarm latching time of 10s. This is useful to notice short exposure events. The software control of the energy ratio sensitivity allows a fine tuning of the NBR-alarm (see chapter 5.2). With option Show simplified NBR message active, the RadEye SPRD-GN display “Artificial” instead of “Low En- erg.”, “Mid Energ.” or “High Energ” and “NORM” instead of “Balanced” 8.4.7 Bluetooth configuration Figure 8-11: Bluetooth configuration 8-16 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 Here the user may configure the BTcom battery cover. The frame “BTcom cover” informs about firmware version, serial number and the physical address of the BTcom cover (not the RadEye). This information is only visible, if the RadEye is connected via Bluetooth. The Parameter “Blue LED on” relates to the blue LED at the backside of the battery cover that shows the connection status. Setting “Power off at battery low” the BTcom cover powers down automatically if battery low status is detected to increase battery life of the RadEye. “Secure connection” uses the PIN code that can be edited in the right field. For more information please read the manual which is deliv- ered together with the BTcom cover. 8.4.8 Menu configuration Figure 8-12: Menu selection RadEye SPRD-GN DB-103 E 8-17 Pi/Iw/Ff 25.08.2016 On the “Functions” tab, the functions available to the user can be selected to speed up access to frequently needed functions. For example, if LED alarm is always active and Autosend is never used, these functions can be hidden for the user. Once the setting of the parameters is finished, the configura- tion is sent to the RadEye SPRD-GN by clicking on the “Write to RadEye SPRD-GN” button. Parameters including the selected menu configuration can be saved with File / Save as… as parameter file (*.cfg). A saved configuration can be reloaded using the menu File / Open… and sent to RadEye SPRD-GN. 8.5 History Via the Options / History menu, the values stored in the RadEye SPRD-GN data memory can be read out, represented in an x/t diagram and saved to the hard disk of the computer. These data subsequently can be read in and further processed in a spreadsheet program. Time interval of History storing can be set from 1s to 43200 s (12 hours). 1600 measurement values can be stored. The RadEye unit loses its date and time settings if the power supply is interrupted (battery exchange). Therefore also the date and time stamps of the history data can be affected, if the date and time information is not updated immediately. 8-18 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 The blue line shows the mean values, the red line the maxi- mum value within the time interval. If batteries are removed, the time reference is lost. In the dia- gram time information is only provided for history values with valid timing entries. Figure 8-8: History read out Clicking at the graph, each individual, stored measured value can be displayed: Figure 8-9: Single history value indication RadEye SPRD-GN DB-103 E 8-19 Pi/Iw/Ff 25.08.2016 8.6 Logbook Changes in configuration, occurring alarms and errors are logged in a buffer. These saved events can be read out via Options / Logbook…. The logbook is shown as a table, and can be saved to PC hard disc or printed. The logbook has a maximum of 250 data sets. Several events at the same time are saved as one record. At the display every event is shown in one line for better overview. The date and time of the PC is used for time relation. Figure 8-10: Logbook 8-20 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 8.7 RadEye Spectra Figure 8-11: RadEye Spectra This pc program is used to read out the spectra stored in the RadEye. The button “Read from RadEye” reads the time stamp of all stored spectra. A click on the time stamp starts the read out of the spectrum. Alternatively the user may click on “Read and store all spectra” to get all saved spectra from the RadEye. The data is automatically stored on the hard disk in ANSI N42.42 (2012) XML format. The upper part of the window displays the spectrum graphical- ly. The lower part of the window shows the details of the spec- trum. RadEye SPRD-GN DB-103 E 8-21 Pi/Iw/Ff 25.08.2016 In the tab “Spectra data” offers a tabular presentation of the spectrum. In the frame User remark the user can add some text. “Store remark” stores the text in the XML file. The tab “Nuclide Identification” displays the identified nu- clides together with the peak data. “Detailed Gross” shows some general information. “Detailed BGnd” shows some general information about the last background spectrum measurement. 8-22 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 With “Region of Interest” the user may examine the spectrum. 8.7.1 Storing spectra to another location By means of “File / Save As…” menu function the user can copy the currently loaded N42 spectrum file to another loca- tion. 8.7.2 Loading spectra from file By means of “File / Load…” menu function the user can load a stored N42 spectrum file. This spectrum and its referring values are displayed. The referring background spectrum is loaded together with the gross measured spectrum if a back- ground spectrum was used in the RadEye at the time of stor- ing. 8.7.3 Export spectra data By means of “File / Export spectrum…” menu function the user can export the currently loaded N42 spectrum file as text file which can be imported in data spreadsheet programs (e.g. MS Excel). RadEye SPRD-GN DB-103 E 8-23 Pi/Iw/Ff 25.08.2016 9. Trouble Shooting 9.1 RadEye SPRD-GN doesn’t power on 9.1.1 Press “On” for at least one second Keep the button “” pressed until the LED and the sound is active. The RadEye may need a longer time for start up if it is started immediately after the batteries are inserted. If the but- ton is pressed only shortly, then the start up routine is not acti- vated. The LED may flash then only very shortly. 9.1.2 Check battery If the RadEye SPRD-GN does not respond to a long press (> 1s) of the “” button, then please use the following step by step procedure: A) Remove the current batteries B) Clean the battery contacts C) Check the required orientation of the batteries according to the printed “+” symbols in the battery compartment. D) Insert two -“AAA” with sufficient capacity: Rechargeable AAA batteries should be completely loaded, non rechargeable batteries should supply together at least 2.3 Volt under load. E) Press the “” button for more than one second (see also 9.1.1) RadEye SPRD-GN DB-103 E 9-1 Pi/Iw/Ff 25.08.2016 9.2 Reading data from the start up screen The startup screen shows important data like the last calibra- tion, the current battery voltage and the firmware version. Calibration date Checksum of the firmware Battery Firmware voltage version This screen stays active as long as the “” button is kept pressed during the power-on of the RadEye device. 9.3 The RadEye doesn’t show the menu items as described in the manual The items available in the RadEye SPRD-GN’s menu can be disabled or enabled via the RadEye_SPRD.EXE software. The factory setting has all menu functions enabled. Please refer to chapter 8.4, menu settings. Next, please check the firmware version of your RadEye SPRD-GN (see chapter 2.4) and com- pare your version number with the revision table of this manu- al at the beginning of the document. The revision table shows the introduction of new functions together with the according firmware version. 9-2 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 9.4 The RadEye shows an error message in the display’s top line Please refer also to chapter 7.2. If one of the following failures is indicated, then the instrument must be repaired by the Thermo Scientific bench repair team: HV-Error Detect Err EEPROM Err Watchdog* Please contact our Customer Service for more details. *) Please see the failure description in the above referenced chapter. If the failure was related to a strong electromagnetic pulse scenario and the failure went away afterwards, then a repair may not be necessary. A diligent observation of the RadEye SPRD-GN proper operation after the failure is strong- ly recommended. 9.5 The RadEye is not found in the software If the connection between the RadEye and the computer can’t be established with a selected serial port (COM port), then the program shows the bellow message first: RadEye SPRD-GN DB-103 E 9-3 Pi/Iw/Ff 25.08.2016 The RadEye_SPRD.EXE software offers to search for a con- nection to the RadEye unit on other available serial ports. If there is a faulty connection between the unit and the com- puter, the program shows the error message “Data transfer to instrument fails” In this case, you must check whether:  The RadEye has been positioned correctly in the desktop holder (with rubber boot) and the RadEye is turned on.  The infrared transmission windows are clean  The correct serial interface has been selected. It is recommended to use the Windows system tools to deter- mine the occupation of the currently active serial ports. Virtual serial ports are labeled accordingly for identification. 9-4 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016  ´ Device Manager showing the virtual driver for USB „Prolific“ at COM 4 Open next the serial interface step window in the RadEye_SPRD.EXE software: Configuration / Com set- tings... menu. The used serial port has to be selected next. 9.6 RadEye lost date and time settings The date and time information is lost, each time the batteries are removed or below the required voltage for operation. The simplest way to program the date and time is to use the “syn- chronize” function of the optional RadEye_SPRD.EXE soft- ware. Else the current date and time can be set also through the RadEye’s menu “Settings” / “Set Date / Time”. 9.7 RadEye’s battery status is lower than expected Please check if the correct battery type is selected under “set- tings” / “Batt. type” and change the type in case. Rechargeable batteries supply a voltage of 1.2V each, while Alkaline batter- ies provide 1.5V. RadEye SPRD-GN DB-103 E 9-5 Pi/Iw/Ff 25.08.2016 Rechargeable batteries offer also a steeper drop from accepta- ble battery voltage to “battery low” than Alkaline types. 9.8 History data shows the wrong time and date See chapter 9.6. 9-6 DB-103 E RadEye SPRD-GN Pi/Iw/Ff 25.08.2016 10. Maintenance 10.1 Recommended maintenance The RadEye SPRD-GN is basically maintenance free. 10.1.1 Lu-Adjust and Neutron Alignment It is recommended to perform a Lutetium test routine (Lu- Adjust) with the optional Lutetium test adapter on a regular basis. The Lutetium test routine and neutron alignment is de- scribed in chapter 4.11. Level of usage Period between Lu-Adjusts Intensive, changing climate 3 month Normal, daily usage 6 month Low 12 month 10.1.2 Cleaning the instrument