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Instruction Manual
IM-105-4000, Original Issue
August 2005
OPM 4000
5-4
RECORD THE
ZERO/SPAN VALUES IN
THE QUICK MENU
1. At the control unit, under the flip down door, press the EDIT (ESC)
button [the red Edit (ESC) LED will light]. The message display will read
QUICK MENU. Press the ENTER key, then the EDIT Ð key 4 times or
hold and scroll down until the display reads ZERO CAL VALUE. Press
the ENTER key twice, the Edit Value Light will flash. Press and hold the
EDIT Ï or EDIT Ð key until the zero value recorded in the previous
steps is displayed. Press ENTER then press the EDIT key 3 times to
return to normal operation.
2. Press the EDIT (ESC) button [the red Edit (ESC) LED will light]. The
message display will read QUICK MENU. Press the ENTER key, then
the EDIT Ð key 5 times or hold and scroll down until the display reads
SPAN CAL VALUE. Press the ENTER key twice, the Edit Value Light will
flash. Press and hold the EDIT Ï or EDIT Ð key until the span value
recorded in the previous steps is displayed. Press ENTER then press
the EDIT key 3 times to return to normal operation.
3. This completes the calibration.
OFF STACK ZERO
CALIBRATION
This procedure may be used if: A clear stack condition is not possible and the
zero appears to be incorrect or if the flange-to-flange distance on site are
different than the original factory set up.
1. Remove the transceiver and retro reflector from the hinge pins. Remove
the service module and install the system on test stands and at the
correct flange-to-flange distance plus 11 in. (279,4 mm). The additional
11 in. (279,4 mm) compensates for air plenum spacing, as the air
plenums are not used for the off stack zero calibration. If test stands are
not available, an alternate method is to use 3 in. pipe flanges with air
plenums installed, contact the factory for air plenum availability. Set the
spacing between the 3 in. flanges exactly the same as flange-to-flange
measurement.
2. Clean transceiver and retro windows.
3. Connect the control unit with the control to service module test cable kit
and apply power to the system.
4. The retro reflector must be level.
5. Follow instruction for Clear on Stack Zero and Span Calibration.