Laserfiche WebLink
I, HN on <br />The Leak Alert system consists of an alarm control panel enclosure, and one or more remote <br />sensors. <br />11.1. ALARM CONTROL PANEL <br />The Alarm Control Panel is a NEMA Type 4 weatherproof instrument enclosure. <br />Included inside the enclosure are the following major components: <br />A. <br />Base Plate <br />B. <br />Wiring Terminal Block <br />C. <br />Indicator Nameplate <br />D. <br />12V DC Power Supply <br />E. <br />Motherboard <br />F. <br />Channel PC Card <br />G. <br />Zener Safety Barrier <br />11.1.A. Base Plate <br />The function of the Base Plate is to provide a mounting base for the other <br />components. This plate is fastened to the enclosure with four mounting <br />screws. <br />The function of this terminal block is for connections of 115VAC 60 Hz <br />power input, as well as the alarm relay contacts. <br />marked on base plate. <br />11A.C. Indicator Nameplate <br />The function of this nameplate is to identify the channels, status of power <br />and alarm LED indicators, the adjustments trimpots for liquid alarm, vapor <br />alarm, and Zero and Span for optional analog output <br />11.1.D. 12 -Volt DC Power Supply <br />The Leak Alert system electronic circuit is operated with a 12 -Volt DC <br />power supply. This power supply is a product of Condor Inc. and has been <br />listed by Underwriters Laboratories, Inc. and certified by the Canadian <br />Standards Association. <br />This power supply is mounted on the base plate. <br />11.11.E. Motherboard <br />This mother PC board is to provide the edgecard connectors for interfacing <br />with the individual channel PC cards, the alarm and relay driving circuit, and <br />various wiring terminals for the sensors and analog outputs. <br />0 <br />