Liquid leak detector HPF-D040

optical

Inherently safe product. PFA protects sensor and cable. Saves space. Description The HPF-D040 fiber-optic leak detector is inherently safe as there is no circuitry at the sensing point, only light from the associated amplifier (recommended HPX-AG series). Using the HPF-D040 and the HPX-AG amplifier together, output can be latched. This function is effective in detection of a small leak of volatile liquid and in early detection of a leak's location. The amplifier would be mounted out of the immediate sensing area. The small and narrow sensing head and bracket are composed of chemically resistant Teflon(r) PFA material. A detachable mounting bracket block with an integral 316SS mounting grommet insures adequate retention and provides easy maintenance. The 5 meters of cable length has a 60 micron covering of PFA material that provides chemical protection along with field cut-to-desired-length ability. The selection of the amplifier influences the capabilities of the leak detector, 1 ml of liquid is minimally required to change the amplifier's state. The failsafe design is achieved by conducting light back to the amplifier when liquid is not present. Liquid presence or a cable break will stop the light from being returned. Unlike the self-contained version (HPQ-D series) and competitors' models, the customer's pan is used to stabilize and adjust the light return when setting the amplifier. If the sensor becomes unattached and no longer sees the pan reflection, the output will turn off. This is called "floating head detection".