Optische Sensoren / Füllstandsüberwachung / Pipe-Mounted Liquid Level Switches with Built-in Amplifier

Photoelektrischer "clamp-on" Füllstandsensor mit integrierten Signalwandler und digitalem Ausgang, für zuverlässige Überwachung ohne Medienkontakt bei minimalen Installationsaufwand. 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