X76AM-4报警控制。输入模块的详细介绍
Alarm Cont. Input Module [X76AM-4]
The X76AM Alarm Module is part of the X76LVC and X76LVCS Leak Detection Systems. It provides for up to three contact inputs typically from the horizontal liquid level sensor LS-7, the vertical level sensor LS-3, the hydrostatic leak sensor LS-30 and the pressure/vacuum decay sensors JT-2P and JT-2V. The X76AM-4报警控制。输入模块 sensor contacts transfer if liquid is present in the annular space of a double-wall tank, secondary containment pipes, manhole or caisson compartments. The alarm module monitors the status of the contacts and, should an abnormal condition occur, the front panel mounted LED抯 will flash for a visual alarm indication and the audible alarm turns on. The system ACK push button allows the operator to silence the audible alarm and changes the flashing light to steady on. The green LED shows ***ailability of power to the module and the contacts. The module抯 integral switches allow selection of normally open (sensor contact open with no liquid) or normally closed (sensor contact closed with no liquid) sensor input signals to the alarm module.