Liquid leak detector HPQ-D

with semiconductor sensoropticalcompact

Built-in amplifier with WHG certificate, no absorbent paper required, usable with various liquids. Description The HPQ-D leak detection sensor is the first of its kind to be constructed entirely of sealed, Teflon(r) PFA material and be configured in a self-contained package smaller than a quarter. It does not require a fiber-optic amplifier since there is a useable NPN or PNP transistor output with each sensor. Typically, only 1 ml of liquid in contact with the optical focal point will change the sensor's output. This enables early detection of caustic chemical spills and can be used to shut down the tool immediately, which minimizes the environmental impact. A large gain signal difference between no liquid and liquid detection ensures low probability of false detection. The failsafe design provides a normally closed output that turns off when liquid is detected. Easily viewable green LED signifies normal operation and an orange LED turns on when liquid is detected and output is shut off. The bracket assembly is made of CPVC material and has an over/under patented style that assures solid retention once locked down and the ability to remove the sensor for maintenance or output checking.