oil tank monitoring system

oil tank monitoring system Oscillator oscillating voltage 1 ~ 3KHz into the signal processing chain, when the sensor is switched on, 1 ~ 3KHz alternating current into the sensor, with the displacement sensor core, tank level gauge system the signal processing chain transformation, and the core position proportional 0 ~ 5V voltage, the voltage all the way through the buffer output 0 ~ 5V voltage signal, another pass V / I converted 4 ~ 20mA current output, as well as all the way to the alarm circuit identification, alarm signals can be overrun.