Liquid level switch HPQ-T

electro-opticalfor the pharmaceutical industryfor septic tanks

Just by mounting the switch on a pipe, the surface of the liquid can be easily detected. Description The HPQ-T is designed specifically for liquid level detection by non-contact methods in clear or very translucent pipes. The switch is mounted on a pipe between 3 to 7 mm or 8 to 13 mm in diameter and features an infrared light beam that becomes refracted and undetectable by the receiver when the liquid is present. The switch runs on 10 - 28 VDC, has a response time of 2 msec max, has Light Operate & Dark Operate selectable output functioning, and has a 100 mA NPN or PNP output. There is minimal malfunctioning when air bubbles or water droplets are present. Features * Reliable detection Refraction-based detection ensures sufficient gain between light-ON and dark-ON light levels. This switch is also suitable for liquids with poor light transmission (such as photoresist liquid and waste fluids). * Operation panel is located on the side The indicator and operation selector switch are located on the side. Even when the switches are gang-mounted, they can be adjusted while viewing the indicator. * Fits various pipe diameters The same model can be used for upper or lower limit detection