LEAK DETECTION SYSTEM FOR LIQUID PROCESSING DEVICE

摘要

A leak sensor system for use in liquid processing equipment is disclosed. Liquid is detected by a sensing resistor (Rs) whose impedance decreases dramatically in the presence of liquid. The effect of this impedance drop on the output voltage of the sensor indicates a wet or moist state which may indicate leakage from the liquid processing. A terminal resistor (Rt) is in the circuit beyond the sensing resistor (Rs) to provide a warning indicator when the sensing resistor (Rs) is damaged or disconnected. The leak sensor system is particularly useful in centrifuge equipment, e.g., for the processing of blood.