Armstrong Monitoring AMC-1040 Manual de instruções de instalação e funcionamento - Página 12

Procurar online ou descarregar pdf Manual de instruções de instalação e funcionamento para Instrumentos de medição Armstrong Monitoring AMC-1040. Armstrong Monitoring AMC-1040 17 páginas. Gas monitor with integral electrochemical sensor

5 OPERATION AND CALIBRATION

5.1 OPERATION

Note:
BEFORE turning on the main power to the monitor, MAKE SURE all connections are
properly made.
When power is applied, 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. If time delays are required or the audio alarm 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 circuit is indicated by
the amber fail LED.

5.2 CALIBRATION

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 calibration kit or available separately (depending on type of gas or application).
To observe immediate reaction during calibration, the low and high alarm time delays should be
disabled.

5.2.1 EQUIPMENT REQUIRED

Digital multimeter
Miniature screwdriver
Calibration gas(es)
Calibration Kit (number?)

5.2.2 ADJUSTMENTS

For full recalibration adjustments, follow the Set-Up Procedure steps 1 to 5 inclusive. There are
two adjustments to be made for periodic recalibration: Zero and Span adjustments and the
Alarm adjustments. Alarm adjustments are only required if the user wants to change alarms.
Refer to Figure 6 to perform the following procedure
1) Remove cover from monitor enclosure.
2) Plug in standard test leads fully into jacks on multimeter.
3) Switch ON multimeter and select the DC Volts range greater that 1.00 VDC.
AMC-1040 Monitor
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