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Rev. 2.1 7-7-2017
Copyright © 2017 by Cool Air Incorporated. All rights reserved.
4-20 mA output signal shows an increasing value that
corresponds to the digital display.
4.
Remove the ammonia sample.
5.
Wait until the ammonia concentration reading is below the
alarm set point
, then move the service jumper to the “OFF”
position and close the detector enclosure. Remember, this step
is only required if the service jumper was moved to the “ON”
position in step # 1 above. Testing is now complete.
Calibrating the Detector
Follow these instructions to calibrate the detector:
4.
Open the detector enclosure and move the service jumper to
the “ON” position, if needed. This step deactivates the pre-
alarm, Alarm, and Auxiliary relays so that any attached strobe
lights, horns, and/or monitoring systems are not activated. In
some applications, if alarming is required, leave the service
jumper in the “OFF” position.
5.
Install the jumper on the jumper pins (labeled “SET1”) located
below the rotary selector switch on the front panel-mounted
circuit board.
6.
Set the rotary selector switch to position “9”.
7.
Attach the calibration adaptor to the sensor and flow the
calibration gas at no greater than .5Lpm
until a stable
ammonia concentration reading is displayed
(this should be
no longer than 60 seconds)
8.
Press the “UP” or “DOWN” button until the display indicates
the concentration of the known sample. For example, if the
sample ammonia concentration is 1%, press the “UP” or
“DOWN” button until the display indicates 1.0.
9.
Press and hold the “ENTER” button for at least 2 seconds.
10.
Remove the Calibration gas, calibration adaptor, and the
calibration jumper.
11.
Wait until the ammonia concentration reading is below the
alarm set point
, then set the rotary selector switch to the
desired position (typically “0” or “1”).
12.
Move the service jumper to the “OFF” position and close the
detector enclosure. Remember, this step is only required if the
service jumper was moved to the “ON” position in step # 2
above. Calibration is now complete.
