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MiniRAE 3000 Calibration Procedures
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MiniRAE 3000 Calibration Procedures

Created by
@ValiantSunstone

Questions and Answers

What should be checked if the inlet flow is too low?

  • Ensure the lamp drive circuit is functioning.
  • Replace the sensor module O-ring.
  • Inspect for debris in the pump diaphragm. (correct)
  • Check if the buzzer is turned off.

    • Which action is NOT recommended when facing an inoperative unit?

  • Contact Technical Support at the toll-free number.
  • Check if the buzzer is turned off.
  • Call the authorized service center.
  • Replace the UV lamp immediately. (correct)

    • What might indicate a weak or defective PID lamp?

  • The display shows a 'Lamp' message during operation. (correct)
  • A buzzing noise from the unit.
  • Low inlet flow readings.
  • A damaged pump diaphragm.

    • What key should be pressed to save changes after adjusting settings?

    <p>[Y/+]</p> Signup and view all the answers

    What does the Low Alarm limit value depend on?

    <p>The measurement gas</p> Signup and view all the answers

    How is the TWA Alarm limit value expressed?

    <p>In parts per billion</p> Signup and view all the answers

    What should you do if you want to revert back to the previous settings?

    <p>Press [N/-]</p> Signup and view all the answers

    To change a digit's value, what key is used to increase the number?

    <p>[Y/+]</p> Signup and view all the answers

    Which alarm limit is specifically expressed in ppb?

    <p>All of the above</p> Signup and view all the answers

    What happens when you press [MODE] after completing your selections?

    <p>You can choose to save or undo changes</p> Signup and view all the answers

    What happens when you press [Y/+] to clear the datalog?

    <p>The display will show 'Datalog Cleared!'</p> Signup and view all the answers

    What is the maximum interval that can be set for the datalog?

    <p>3600 seconds</p> Signup and view all the answers

    What is the first step required to change the instrument from Hygiene Mode to Search Mode?

    <p>Press [MODE] and [N/-] simultaneously</p> Signup and view all the answers

    Which mode will be displayed as selected when using the MiniRAE 3000?

    <p>Search Mode</p> Signup and view all the answers

    What must be observed on the screen to confirm that the instrument is set to Hygiene Mode?

    <p>A dark circle next to Hygiene</p> Signup and view all the answers

    Which batteries are recommended for use in the alkaline battery adapter?

    <p>Duracell MN1500 or Energizer E91</p> Signup and view all the answers

    What message appears on the display if there is a charging error?

    <p>Charging Error</p> Signup and view all the answers

    What will the instrument's display indicate if alkaline batteries are installed during charging?

    <p>Alkaline Battery</p> Signup and view all the answers

    What is the approximate operating time provided by the alkaline battery adapter?

    <p>12 hours</p> Signup and view all the answers

    What alarm signal corresponds to a gas concentration exceeding the LOW alarm limit?

    <p>2 beeps/flashes per second</p> Signup and view all the answers

    Which condition will trigger a battery low alarm signal?

    <p>Battery voltage below preset level</p> Signup and view all the answers

    During a measurement period, what happens if the concentration of gas exceeds the programmed alarm limits?

    <p>A loud buzzer and red flashing LED are activated</p> Signup and view all the answers

    What alarm signal is used for indicating a pump failure?

    <p>3 beeps/flashes per second</p> Signup and view all the answers

    Which alarm indicates that the gas reading is less than the number stored in calibration?

    <p>NEG</p> Signup and view all the answers

    What action occurs if the gas concentration exceeds the measurement range?

    <p>The high alarm signal is activated</p> Signup and view all the answers

    What is the signal for a PID lamp failure?

    <p>3 beeps/flashes per second plus 'Lamp' message</p> Signup and view all the answers

    What occurs if no key is pressed during the Average & Peak display settings?

    <p>It exits to the main display after 60 seconds</p> Signup and view all the answers

    What is the primary purpose of performing a zero calibration?

    <p>To establish the zero point of the sensor calibration curve</p> Signup and view all the answers

    Which of the following is an acceptable source of fresh air for zero calibration?

    <p>Clean, dry air without organic impurities</p> Signup and view all the answers

    What happens after zero calibration is completed?

    <p>It displays the reading as 0.0 ppm</p> Signup and view all the answers

    How long does the zeroing process last during calibration?

    <p>30 seconds</p> Signup and view all the answers

    What is the primary function of the [MODE] key in Programming Mode?

    <p>To exit data entry mode or menu</p> Signup and view all the answers

    Which of the following lists can be customized by the user?

    <p>My List</p> Signup and view all the answers

    What gas is always present as the first entry in 'My List'?

    <p>Isobutylene</p> Signup and view all the answers

    Study Notes

    Calibration Procedures

    • Two-Point Calibration Exit: Press [MODE] to update settings and return to the main display for monitoring.
    • Three-Point Calibration: Requires setup via ProRAE Studio and a higher concentration of calibration gas for enhanced accuracy. Previous calibrations must be completed first.
    • Span 2 Calibration: Uses a cylinder of standard reference gas with a flow-limiting regulator. Higher concentration gas than Span 1 is necessary.
    • Calibration Options: Includes "Save" to register new settings or "Undo" to revert to previous settings after a calibration.

    Alarm Settings

    • Low Alarm Modification: Change expressed in parts per billion (ppb). Increase digits with [Y/+] and advance with [N/-].
    • STEL Alarm Adjustment: Similar process as Low Alarm; reflects calibration gas value.
    • TWA Alarm Configuration: Adjust using the same method as Low and STEL Alarms.

    Datalog Management

    • Data Log Clearing: Irretrievable once cleared, confirm action with [Y/+].
    • Interval Settings: Default set to 60 seconds, maximum is 3600 seconds, adjustable in the same manner as alarms.
    • Data Selection: Options to collect Average, Maximum, Minimum data types pre-selected before offloading to a PC.

    Datalog Types

    • Types Available:
      • Auto Mode: Collects data during sampling.
      • Other modes are adjustable based on user needs.

    Operational Modes

    • Hygiene and Search Modes: Change requires password access to the Programming Mode.
    • Mode Selection Process: Involves inputting a four-digit password and toggling between Hygiene and Search via Monitor Setup.

    Display Options

    • Graphic Display Setting: Through ProRAE Studio for tracking highest readings over time instead of numerical data.

    Troubleshooting

    • Power Issues: Check the buzzer and restart the unit if necessary.
    • Low Inlet Flow: Potential causes include a damaged pump diaphragm or flow path leaks; solutions necessitate examining the flow path and contacting technical support.
    • Lamp Issues: Weak or defective PID lamp may require replacement after shutting down and restarting the unit.

    Technical Support Contact

    • RAE Systems Support Hours: Monday to Friday, 7:00AM to 5:00PM Pacific Time.
    • Contact Methods:
    • After-hours support: Available for life-critical issues at +1 408-952-8200, option 8.

    Zero Calibration

    • Zero calibration message indicates zeroing process is complete: "Zeroing is done! Reading = 0.0 ppm."
    • Instrument automatically transitions to the main display after 60 seconds without key press during several screens.
    • Fresh air calibration uses clean, dry air with 20.9% oxygen, can also utilize a charcoal filter or ambient air without contaminants.

    Alarm Signals

    • The instrument compares gas concentration with programmed alarm limits during measurements.
    • Audible alarms and visual indicators activate under various conditions:
      • HIGH: Gas exceeds high alarm limit (3 beeps/flashes/sec).
      • OVR: Gas exceeds measurement range (3 beeps/flashes/sec).
      • MAX: Gas exceeds electronics’ maximum range (3 beeps/flashes/sec).
      • LOW: Gas exceeds low alarm limit (2 beeps/flashes/sec).
      • TWA: Gas exceeds time-weighted average limit (1 beep/flash/sec).
      • STEL: Gas exceeds short-term exposure limit (1 beep/flash/sec).
      • Pump failure and lamp failure indicated by flashing icons and 3 beeps/flashes/sec.
      • Low battery: 1 flash, 1 beep per minute, plus battery icon on display.
      • Calibration failure or need indicated by 1 beep/flash/sec.
      • Negative reading indicated by 1 beep/flash/sec.

    Power Management

    • Fully charged battery indicated by glowing green LED and "Fully charged" message.
    • Charging errors show red LED.
    • Full charge achieved within 8 hours; batteries drain slowly even when off.
    • Factory battery designed for 16 hours of operation under optimal conditions; reduced capacity occurs in older batteries or adverse conditions.

    Alkaline Battery Adapter

    • Alkaline battery adapter allows use of four AA batteries for emergency situations.
    • Adapter provides approximately 12 hours of operation; batteries cannot be recharged.
    • Instrument displays "Alkaline Battery" when alkaline batteries are installed, preventing charging.

    Calibration Types

    • Two calibration types available: Zero (fresh air) and Span.
    • Zero calibration initiated with clean air, while span calibration requires reference gas and flow regulator.

    Measurement Menus

    • Measurement gases categorized into:
      • My List: Customized list of up to 10 gases, created via ProRAE Studio.
      • Last Ten: List automatically built of the last ten gases used.
      • Gas Library: Includes all gases found in RAE Systems' Technical Note TN-106.
      • Custom Gases: User-modified gases with customizable parameters via ProRAE Studio.
    • Navigation in measurement gas lists is done using [N/-] and [Y/+].

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    Description

    This quiz focuses on the calibration procedures outlined in the MiniRAE 3000 User’s Guide. It covers the essential steps for completing both two-point and three-point calibrations, helping users understand how to enhance accuracy and monitor settings effectively.

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