MiniRAE 3000 Calibration Procedures

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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?

[Y/+] Signup and view all the answers

What does the Low Alarm limit value depend on?

The measurement gas Signup and view all the answers

How is the TWA Alarm limit value expressed?

In parts per billion Signup and view all the answers

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

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

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

[Y/+] Signup and view all the answers

Which alarm limit is specifically expressed in ppb?

All of the above Signup and view all the answers

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

You can choose to save or undo changes Signup and view all the answers

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

The display will show 'Datalog Cleared!' Signup and view all the answers

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

3600 seconds Signup and view all the answers

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

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

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

Search Mode Signup and view all the answers

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

A dark circle next to Hygiene Signup and view all the answers

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

Duracell MN1500 or Energizer E91 Signup and view all the answers

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

Charging Error Signup and view all the answers

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

Alkaline Battery Signup and view all the answers

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

12 hours Signup and view all the answers

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

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

Which condition will trigger a battery low alarm signal?

Battery voltage below preset level Signup and view all the answers

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

A loud buzzer and red flashing LED are activated Signup and view all the answers

What alarm signal is used for indicating a pump failure?

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

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

NEG Signup and view all the answers

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

The high alarm signal is activated Signup and view all the answers

What is the signal for a PID lamp failure?

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

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

It exits to the main display after 60 seconds Signup and view all the answers

What is the primary purpose of performing a zero calibration?

To establish the zero point of the sensor calibration curve Signup and view all the answers

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

Clean, dry air without organic impurities Signup and view all the answers

What happens after zero calibration is completed?

It displays the reading as 0.0 ppm Signup and view all the answers

How long does the zeroing process last during calibration?

30 seconds Signup and view all the answers

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

To exit data entry mode or menu Signup and view all the answers

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

My List Signup and view all the answers

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

Isobutylene 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:
- Toll-free: +1 888-723-4800
- Direct: +1 408-952-8461
- Email: [email protected]
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.