Armstrong Monitoring AMC-1222, Instructions Manual

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AMC-1222 CO/NO
2
Multidrop
15
5 OPERATION AND CALIBRATION
This section covers instructions for the proper operation and calibration of the AMC-1222
module. The operation principles are described in further detail, followed by different types of
periodic adjustments that might be required throughout the lifetime of the equipment.
5.1 OPERATION
In general, after the stabilization period and in a clean air environment, the sensor module
should be displaying a GREEN Power ON LED. This green indicator, as well as the two red
alarm indictors and the amber logic indictor, are all visible through windows on the front panel.
Fail is indicated by a flashing power LED.
Input and Output Magnitudes in Various Conditions in Current or Voltage Mode:
Operation condition Voltage Mode Current Mode
Fail 0 VDC 0 mA
Normal 1 VDC 4 mA
Low Alarm 2 VDC 8 mA
High Alarm 3 VDC 12 mA
5.1.1 LOW AND HIGH ALARM CONDITIONS
If any gas exceeds the LOW alarm trip point setting, the red LED will start flashing and the
module will transmit a Low Alarm signal, and when using an AMC 1AD Series monitor, it also
turns ON the yellow LED at the monitor. Likewise, if any gas exceeds the HIGH alarm trip point
setting, the red LED's will turn ON and transmit a High Alarm signal to the monitor.
5.1.2 COMFORT ZONE
The comfort zone alarm condition is user selectable by using four DIP switches; three switches
for CO gas and one for NO
2
gas. When activated the amber LED turns ON and outputs to the
monitor the same as the Low Alarm condition.
SW5(A) SW6(B) SW7(C) SW8(D) Sensitivity
OFF OFF OFF OFF Super High
OFF ON OFF ON High
ON OFF ON OFF Med
ON ON ON ON Low