Armstrong Monitoring AMC-1040 설치 및 운영 지침 매뉴얼 - 페이지 9
{카테고리_이름} Armstrong Monitoring AMC-1040에 대한 설치 및 운영 지침 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Armstrong Monitoring AMC-1040 17 페이지. Gas monitor with integral electrochemical sensor
페이지 인쇄4 INSTALLATION
4.1 LOCATION AND MOUNTING
Care should be taken to securely fasten the AMC-1040 monitor unit (via four mounting holes
provided) to a solid, vertical, non-vibrating surface or structure. Mounting height is dependent on
gas type. (See Figure 4 for mounting dimensions.)
Note:
All cable entry MUST be through the BOTTOM of the monitor enclosure only. Other
entry locations will allow foreign materials to enter the enclosure, possibly causing
damage to internal components. Mounting hardware and conduit connections are NOT
supplied.
Mount the 1040 monitor in a NON-HAZARDOUS area where local concentrations of gases are
unaffected by the presence of ventilation systems and where the unit can be observed
periodically.
4.2 WIRING OF THE MONITOR
POWER SUPPLY:
RELAYS:
ANALOG OUTPUT:
AMC-1040 Monitor
The monitor operates on 120 VAC, 60 Hz.
transformer runs the internal circuitry at low voltages.
supply connections are made at the power terminal block located inside
the monitor. (See Figure 3)
There are up to 3 DPDT relays which activate with high alarm, low
alarm and optional fail respectively causing contact transfer. The
contacts are available for activating a remote alarm and/or, blower
motors where moving parts are fully guarded, pumps or lighting circuits.
Relays are rated 1/3 hp @ 120 VAC/240 VAC, 10 Amps @ 28
VDC/120 VAC/240 VAC resistive. For relay contact arrangement see
Figure 5. The high and low alarms relay coils are normally de-energized
and the optional fail relay coil is normally energized.
The AMC 1040 comes standard with a 4-20 mA output. This output
corresponds to the gas range indicated on page iv. It can be used for
connecting to an external recorder or other device. The maximum load
is 250 ohms.
4
A Class II step down
The power