Detcon CX-DM - Manual (Page 22)

Model CX-DM
• Temperature ##C
From the View Sensor Status text scroll, hold the magnet over PGM1 or PGM2 until the "
►" prompt
appears and continue to hold the magnet in place for an additional 3 to 4 seconds (until the display starts to
scroll Status Is). The display will scroll the complete list of sensor status parameters sequentially:
When the status list sequence is complete, the ITM will revert to the View Sensor Status text scroll. The user
can either:
• review the list again by executing another 3 to 4 second hold, or
• move to another menu item by swiping over PGM1 or PGM2, or
• return to normal operation by the automatic timeout of about 15 seconds (the display will scroll View
Sensor Status four times before returning to normal operation).
3.4.2 Set Detection Range
The CX-DM sensor is calibrated at the factory for the range specified by the customer. Field adjustments to
the predetermined range should only be made under direct supervision of Detcon.
NOTE The sensor range should not be changed in the field unless directed to do so by Detcon.
3.4.3 Set AutoSpan Level
Set AutoSpan Level is used to set the span gas concentration level used to calibrate the sensor. This level is
adjustable from 1% to approximately 75% or 95% depending on the full-scale range. The current setting can
be viewed in View Program Status.
The menu will display Set AutoSpan Level.
From the Set AutoSpan Level text scroll, hold the magnet over PGM1 or PGM2 until the "
►" prompt
appears and continue to hold the magnet in place for an additional 3 to 4 seconds (until the display starts to
scroll Set Level). The display will switch to XX (where XX is the current AutoSpan level).
Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the AutoSpan Level until the
correct level is displayed. When the correct level is achieved, hold the magnet over PGM2 for 3 to 4 seconds
to accept the new value. The display will scroll Level Saved, and revert to Set AutoSpan Level text scroll.
Move to another menu item by executing a momentary hold, or return to normal operation by the automatic
timeout of about 15 seconds (the display will scroll Set AutoSpan Level four times before returning to normal
operation).
3.4.4 Bump Test
Bump test checks the response of the sensor with the indication of response limited to the display only. The
bump test mode allows the performance of the sensor to be checked without firing the alarms of any attached
control systems. The results of the bump test will not affect the reading register on the Modbus™ output.
The menu item appears as: Bump Test.
From the Bump Test scroll, hold the magnet over PGM1 or PGM2 until the "
►" prompt appears and
continue to hold the magnet in place for an additional 3 to 4 seconds (until the display starts to scroll Bump
Test Started).
CX-DM Instruction Manual Rev. 1.3 Page 18 of 40