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Instruction Manual
IM-105-4000, Original Issue
August 2005
4-3
OPM 4000
Alarm Time Delay
Adjustment
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 2 times until the Display reads ALARM
TIME DELAY. Press the ENTER key twice, the Edit Value Light will flash.
Press and hold the EDIT Ï or EDIT Ð key until the desired time in seconds is
displayed, i.e. 15 is 15 seconds delay. Press the EDIT key 4 times to return to
normal operation.
4-20 mA Outputs
The OPM 4000 comes with two 4-20 mA outputs (Figure 4-2). The ranges
are set during final test to the information supplied by the customer.
Maximum output Loop compliance is 800 ohms.
AOUT1
(instantaneous opacity, zero/span when in check mode) is
connected at terminal 11 and 12 and supplies the opacity signal to a recorder
or DAS and to the service module for display at the sensor location.
Figure 4-2. 4-20 mA Outputs
AOUT2
[average opacity, zero/span when in check mode] is connected at
terminal 13 and 14.
No calibration is necessary; however, if you want to check that other devices
such as recorders or DAS are responding correctly use the following
procedure.
Recorder or Other
Device Calibration
On the control unit front panel press the AUTO/MAN key for a maintenance
zero and span cycle. Both outputs will correspond to the opacity display
value.
Auto Cal Timer
Adjustment
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 3 times or scroll down until the Display
reads AUTOCAL CYCL TMR. Press the ENTER key twice, the Edit Value
Light will flash. Press and hold the EDIT Ï or EDIT Ð key until the desired set
point in hours is displayed, i.e. 24.00 equals 24 hour intervals. Press the EDIT
key 4 times to return to normal operation.
Recorder/DAS
14
11(+)
13
Meter
12(-)