SISTEMA ELECTRONICO DE AVISO DE CALIBRACION DESTINADO A SER UTILIZADO CON UN SENSOR O UN DISPOSITIVO ELECTRICO DE REFERENCIA.

摘要

A circuit for indicating when recalibration of an electrical sensor is necessary includes an analog driving circuit adapted to be coupled to the sensor, and an analog indicating device coupled to the analog driving circuit for indicating when the sensor should be recalibrated. The analog driving circuit provides a signal proportional to the current received from the electrical circuit. The indicating device is responsive to the output from the analog driving circuit and provides an output which is a function of both the sensor output and the elapsed time that the sensor has been operated.