Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1998-02-12
2000-08-22
Metjahic, Safet
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324693, G01R 2708
Patent
active
061078115
ABSTRACT:
An automated coupon monitor for detecting the electrical parameters associated with a pipe, a coupon and a reference electrode utilized with a cathodic protection system. A voltage detector circuit has its output applied to a pair of sample and hold circuits, one for recording E.sub.OFF and the other for recording E.sub.ON. Series connected between the coupon and the pipe is a zero resistance current detector circuit and an interrupter switch for measuring the pipe-coupon current and periodically interrupting that current to permit measurement, sampling and storing of E.sub.OFF. The sample and hold circuits and the interrupter switch are controlled by a microprocessor controller. The circuit provides DC level outputs which can be easily read by a digital multimeter or stored in a data logger for subsequent reading or transmission to another location.
REFERENCES:
patent: 4725778 (1988-02-01), Brown
patent: 4752360 (1988-06-01), Jasinski
patent: 4863572 (1989-09-01), Jasinski
patent: 5144247 (1992-09-01), Speck
patent: 5216370 (1993-06-01), Bushman et al.
patent: 5370776 (1994-12-01), Chen
patent: 5469048 (1995-11-01), Donohue
patent: 5728943 (1998-03-01), Colter, Jr. et al.
patent: 5814982 (1998-09-01), Thompson et al.
patent: 5854557 (1998-12-01), Tiefnig
Caudill Dan L.
Lawson Kurt M.
Thompson Neil G.
CC Technologies Laboratories, Inc.
Foster Frank H.
Kobert Russell M.
Metjahic Safet
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