Electronic thermograph

Details Electronic thermograph Electronic thermograph

1976-12-02

1979-01-23

Gorenstein, Charles

Measuring and testing

Gas analysis

Moisture content or vapor pressure

70440, 206807, 292307R, 346 33TP, 346145, G01K 102, G01K 570

Patent

active

041354001

ABSTRACT:
A thermograph adapted to be pre-loaded with chart paper upon which shipping information can be written, and comprising an instrument unit enclosed in an expendable container for automatic operation and security assured by a seal, the instrument being operated horologically in combination with a thermometer and all of which is electro-mechanical wherein solid state circuitry powers prime movers to advance the chart on a time basis while servo positioning a recording stylus by means of interval pulses, and responsive to a temperature sensing transducer means cooperating with the solid state circuitry comprised of a comparator means, and discriminator means operable to actuate switch means to "power-up" or "power-down" prime movers that position said stylus according to temperature sensed by said transducer means.

REFERENCES:
patent: 3787885 (1974-01-01), Johnson
patent: 3910119 (1975-10-01), Maxwell
patent: 3971035 (1976-07-01), Maxwell
patent: 4044362 (1977-08-01), Greenhut

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