UEi Test Instruments DMG100 - Manual (Page 2)

DMG100 User’s Guide
9
Restoring Factory Calibration
The original factory calibration can be restored at any time by the following procedure:
1. Turn the DMG100 power off.
2. Hold while pressing . As soon as the power turns on, release and and then
press quickly at least three times. The CAL indicator should illuminate, and
should show on the Main Numeric Display. If not, turn the power off again and repeat.
3. Press five times followed by .
4. The gauge will beep 5 times and return to normal operation. The DMG100 is now reset to the
original factory calibration.
Troubleshooting
Under certain conditions, the display may read or . Please use the table
below to determine and fix the problem:
Display Mode Possible Problem Solution
Sensor Contaminated Clean the Vacuum Sensor
Normal
Operation
Ambient Temperature too
Low
Turn the BluVac off, warm the
vacuum port with your hand,
and turn the BluVac back on.
Calibration Sensor Contaminated
Clean the Vacuum Sensor
and Restart Calibration
Gauged Warmed too
Quickly
Restart Calibration. Allow the
Gauge to Warm Slowly
Calibration
Gauge Disturbed During
Calibration
Restart Calibration. Leave
the Gauge Undisturbed
During Warming Phase.
Low Temperature Operation
The DMG100 can operate accurately at temperatures as low as 10°F (-12°C). While operating below
freezing (32°F/0°C), the display update rate will slow from 3.5 readings every second to one reading
every two seconds.
A standard alkaline battey may not provide acceptable battery life at temperatures below 0°C (32°F).
For low temperature operation, a 9V Lithium battery is recommended.
DMG100 User’s Guide
2
Parts Diagram