MultiRAE - Shawcity Limited

All RAE Systems gas monitors have a Diagnostic Mode for evaluating the condition of
sensor, lamps, pumps, batteries, etc. This is distinct from the usual diagnostic tests the
instrument performs automatically during routine start-up. All the usual functions can be
performed in diagnostic mode, such as calibration and monitor set-up. In diagnostic
mode all sensor outputs (and most other measured values) are displayed as raw values
(a/d counts) without corrections or conversion to standard units. The following
diagnostic procedures will make use of this mode when appropriate. Whenever the
procedures state “place the unit in diagnostic mode” use the following steps to turn on the
unit in this special mode.
Entering diagnostic mode: With the unit turned off, hold down the [Y/+] key. While
still holding this key down, depress and hold the [MODE] key. Hold both keys down
until unit beeps and then release both keys. The MultiRAE will display “ON!” followed
by the software version number, the firmware build date, and then the “Diagnostic Mode”
message. If you hit the [Y/+] key when Diagnostic Mode is on the screen, the warm-up
will be significantly shorter. The unit will then go through the normal start-up tests.
Once the monitor is ready, the display will show raw values for each installed sensor,
with the word “RAW” in the center of the bottom line of the display.
In Diagnostic Mode, use [N/-] and [MODE] together; just as in normal mode, to enter the
Programming Menu. CAUTION: When calibrating in Diagnostic Mode the system does
not check for a difference between the span and zero calibration points. This can be
useful if calibrating at a low level, (such as 10 ppm VOC). The user must manually
verify, from the raw values in air and with calibration gas applied, that the sensors are
working correctly. Use the [MODE] key alone to step through the special diagnostic
screens in the following sequence:
Version 1.xx Version 2.00 Version 3.xx
Raw Sensor Values Raw Sensor Values Raw Sensor Values
Sensor names Sensor names Sensor names
PID Lamp Fail Threshold PID Lamp Fail Threshold RF test
Battery type / Bias Battery type / Bias PID Lamp Fail Threshold
PID 1X and 10X Range PID 1X and 10X Range Battery type / Bias
LCD Contrast Adjustment LCD Contrast Adjustment PID 1X and 10X Range
LEL Power On/Off Check LEL Power On/Off Check LCD Contrast Adjustment
Clock/Voltage/Temperature Clock/Voltage/Temperature LEL Power On/Off Check
Sensor expiration dates Sensor expiration dates Clock/Voltage/Temperature
Pump Stall Threshold Pump Stall Threshold Sensor expiration dates
Back Light On/Off Threshold Back Light On/Off Threshold Pump Stall Threshold
Communicate with PC S/N and pump speed Back Light On/Off Threshold
Battery deep discharge S/N and pump speed
Power run down time Power run down time
Communicate with PC Communicate with PC
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