System for monitoring flow rate difference in water cooling cond

Details System for monitoring flow rate difference in water cooling cond System for monitoring flow rate difference in water cooling cond

1977-01-21

1978-05-16

Caldwell, Sr., John W.

Communications: electrical

Systems

Call station

73 405R, 73194VS, 73196, G08B 2100

Patent

active

040901793

ABSTRACT:
A system for monitoring the frequency difference between pulse output signals derived from a pair of flowmeters interposed, respectively, in the inlet and outlet lines of a flow conduit supplying cooling water to the tuyere of a blast furnace, the frequency difference being indicative of water leakage. The pulse output signals produced by the respective flowmeters during each predetermined measuring period are integrated. The integrated values are compared with each other, the difference therebetween being monitored whereby when the difference exceeds a predetermined set value, an alarm is generated.

REFERENCES:
patent: 3723987 (1973-03-01), Barone, Jr. et al.
patent: 3909596 (1975-09-01), Sullivan
patent: 3978462 (1976-08-01), Goodman

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