Electromagnetic induction-type conductivity meter with improved

Details Electromagnetic induction-type conductivity meter with improved Electromagnetic induction-type conductivity meter with improved

1992-06-05

1994-08-23

Strecker, Gerard R.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

7386111, 324202, 324204, 324239, 324601, G01N 2706, G01R 2722, G01R 3500

Patent

active

053411021

ABSTRACT:
In an improved electromagnetic induction-type conductivity meter utilizing primary and secondary transformer coils about a liquid sample passageway, a resistance circuit having a conductive lead line extending also through the coils and parallel with the sample passageway is provided. The resistance circuit can be selectively opened and closed, and has the capacity to contribute to the measurement voltage detected on the detector coil when the primary coil is excited. The value of this additional resistance voltage can be used for calibration and monitoring the condition of the conductivity meter.

REFERENCES:
patent: 2438197 (1948-03-01), Wheeler
patent: 3292077 (1966-12-01), Sloughter
patent: 3855522 (1974-12-01), Kobayashi
patent: 4084135 (1978-04-01), Enabnit
patent: 4761539 (1988-08-01), Carmean

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