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5 OPERATION AND CALIBRATION

5.1 OPERATION

Note:

BEFORE turning on the main power to the monitor, MAKE SURE all connections are

properly made.

Once power has been turned on, the GREEN power LED will light. A one-minute time delay

eliminates false alarms from occurring during the sensor's warm up period. After this time

delay, the unit becomes fully operational.

indicator is not needed, the three-circuit miniature switch can be set accordingly. Refer to

Section 3, Item 9 and Figure 1.

If any gas surrounding the sensor exceeds the low alarm trip point setting, the YELLOW LED

and low alarm relay will be activated. If any gas exceeds the high alarm trip point setting, the

RED LED, high alarm relay and audio alarm will be activated. An open sensor/transmitter circuit

is indicated by the amber fail LED.

5.2 CALIBRATION

The AMC-1044-T series monitor is factory calibrated at levels based on set standards.

As the calibration procedure may cause the monitoring equipment to give a false alarm,

appropriate precautions should be taken. Instructions on introducing the gas sample are

included with the sensor/transmitter manual. Refer to the transmitter manual for calibration and

required equipment.

NOTE

BEFORE MAKING ANY CHANGES TO ALARM LEVEL SETTINGS WE RECOMMEND

CONSULTING THE ARMSTRONG MONITORING CORPORATION FOR ADVICE ON SETTING THE

PROPER TRIP POINT VOLTAGE FOR A SPECIFIC ALARM CHANGE.

5.2.1 CALIBRATION FOR REMOTE SENSOR/TRANSMITTER

Please refer to applicable Sensor/Transmitter manual for calibration instructions.

5.2.2 ALARM ADJUSTMENTS FOR TRANSMITTER

Alarms are set at the factory and do not need to be adjusted unless a change in alarms is

required.

Low alarm adjust is used to establish the low alarm trip point. This is done by adjusting the

voltage to the appropriate fraction of full scale at test points COM and LOW TP (see Figure 7).

AMC-1044-T Monitor

If time delays are required or the audio alarm