High/low level alarm controller

Details High/low level alarm controller High/low level alarm controller

2006-10-31

2006-10-31

Crosland, Donnie L. (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S618000, C340S984000, C340S450000, C073S29000R, C073S307000, C137S386000, C137S551000, C137S558000, C116S109000

Reexamination Certificate

active

07129832

ABSTRACT:
A high/low level alarm controller having ability to interface with level sensing equipment and instrumentation in a manner that isolates the controller from downstream components is presented. The controller accepts power, logic and transduced level inputs; output from the controller is available to drive relays, solenoid valves, motors, pumps, alarm horns, etc. The high/low level alarm controller is ideal for existing/retrofit applications and new installations alike.

REFERENCES:
patent: 4290059 (1981-09-01), Noyes et al.
patent: 4736077 (1988-04-01), Valente
patent: 4837552 (1989-06-01), Vandemotter et al.
patent: 5534849 (1996-07-01), McDonald et al.

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