Cooling tower conductivity control timing circuit

Details Cooling tower conductivity control timing circuit Cooling tower conductivity control timing circuit

1995-12-01

1997-11-04

Lee, Kevin

Fluid handling

Processes

13762411, F17D 300

Patent

active

056829167

ABSTRACT:
A controller having a first timer and a second timer for controlling a duration of a blowdown valve. A coincidence circuit including a second set of timers determines whether an operational overlap interval exists, and properly extends operation of the blowdown valve.

REFERENCES:
patent: 4886090 (1989-12-01), Hays
patent: 5059998 (1991-10-01), Sasaki et al.

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