Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1983-02-02
1985-05-21
Levy, Stewart J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
374134, G01K 1500
Patent
active
045189153
ABSTRACT:
A stand-alone electronic simulator device for testing expendable bathythegraph (XBT) systems. The device is inserted into an XBT system in place of an expendable probe for purposes of checking the performance of the rest of the system with an active test signal. The test device simulates an operational XBT probe by switching a highly accurate and stable array of resistance values across its output. The switching rate is controlled by a stable internal time base such that the test pattern plotted on the strip chart recorder and transmitted to an external system will always look the same if the system is functioning properly. Temperature stability in the test device, essential because of the broad ambient temperature range which may be encountered in use, allows checks of the system for probe depth timing linearization in addition to temperature measurement.
REFERENCES:
patent: 2502568 (1950-04-01), Hulsberg
patent: 3479645 (1969-11-01), Singleton
patent: 4218916 (1980-08-01), Mutziger
patent: 4293916 (1981-10-01), Del Re et al.
Bucko Thomas G.
Danforth Philip G.
Galliher Kenneth R.
Lucia Joseph T.
Miller Richard L.
Baker Stephen M.
Beers Robert F.
Levy Stewart J.
McGill Arthur A.
McGowan Michael J.
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