UNI MP100 User’s Guide
19
Sensors are not interchangeable. Use only mPower sensors, and use only the sensor type
specified for your MP100 monitor. Use of non-mPower components will void the warranty and
can compromise the safe performance of this product.
7.4
Year of Manufacture
The fifth to sixth digits of the serial number indicate the year of manufacture, i.e., 00~99
indicate the years 2000 to 2099.
7.5
Troubleshooting
Problem
Possible Reason
Solution
Cannot turn on unit
Battery not installed
Install battery.
Depleted or defective battery.
Replace battery.
Reading abnormally
low
(or Fails Calibration)
Incorrect calibration or zeroed when
detectable gas is present.
Zero and Span calibrate. Ensure clean
air when zeroing.
Calibration gas flow > 0.6 LPM
Use flow between 0.3 and 0.6 LPM
On-board filter plugged.
Replace filter. Use external filter clip in
dusty environments.
Weak sensor.
Have Service Technician check raw
counts and replace sensor as needed.
Calibration Adapter is attached.
Remove Calibration Adapter.
Reading abnormally
high
(or Fails Calibration)
Incorrect calibration or degraded
span gas used or tubing absorbs span
gas
Zero and Span calibrate instrument.
Ensure span gas is not expired.
Used short, inert (PTFE) tubing
Calibration gas flow < 0.3 LPM
Use flow between 0.3 and 0.6 LPM
Environment contains
cross-sensitive substances
Check TA Note 4 for possible
cross-sensitivities.
Reading abnormally
noisy
(or Fails Calibration)
Incorrect calibration or degraded
span gas used or tubing absorbs span
gas
Zero and Span calibrate instrument.
Ensure span gas is not expired.
Used short, inert (PTFE) tubing
Weak sensor.
Have Service Technician check raw
counts and replace sensor as needed.
Buzzer, LED, or
vibration alarm
inoperative
Bad buzzer, LEDs, or vibration
alarm.
Call authorized service center.
Blocked alarm port
Unblock alarm port.
