Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1983-08-02
1986-08-05
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
137554, 137597, 137887, 116268, 116269, 116273, 73196, 200 819M, 340611, F16K 3700
Patent
active
046037071
ABSTRACT:
IA purge block is disclosed in which inlet, process, purge and vent ports are series connected in a ring or bridge. The channel or passageway connecting the inlet and purge ports comprises a flow sensor. The impedance to gas flow of each channel is different from the others. The impedances are chosen such that improper operating conditions cause an imbalance in the flow which is detected by the flow sensor. During normal operation of the system in which the purge block is used, the flow sensor acts as an excess flow detector by comparing the flow through itself with the flow through a parallel, but more restrictive, path within the purge block.
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Chem-Tec, "High Reliability Close Differential Adjustable Flow Switch", Chem-Tec Equipment Co., Fla., Models 125, 500, 1983.
Silsco, "Silsco Moniter Purge Assembly and Control Box," Silsco, 1983.
Chem-Tec, "Flow Signal Valve", Chem-Tec Equipment Co., Fla., 1983.
Chem-Tec, "Flow Switch", Chem-Tec Equipment Co., Fla., Supersensitive, FAV Series, 500, 1983.
Gregoire Roger J.
Huling Bruce
Barbee Joe E.
Chambers A. Michael
Motorola Inc.
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