Electronic thermograph

摘要

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.