Metritape Introduces New Dry Tank Detector —Literature Available
A wet/dry state detector system that gives positive indication of tank empty or tank full condition has just been introduced by Metritape, Inc., Concord, Mass. The new Metripoint liquid level detector was designed as an adjunct to the resistive Metritape Level/Temp sensor which, when suspended from tank top to tank bottom, provides continuous level and temperature measurement.
Optical in principle, the Metripoint detector has no moving parts, is rugged for use with COW jets, and intrinsically safe (using zener barrier isolators) for use in hazardous/ explosive environments. The detector utilizes an infrared LED source and phototransistor light detector mounted in a compartmented CPVC tube with a prism tip.
When the prism tip is dry, reflection within the prism directs optical energy from the LED source to the phototransistor. Immersion of the prism tip in liquid causes light to escape and not to actuate the light detector. The Metripoint detector is positioned on the channel of the Metritape sensor at any preselected tank level, and can be cleaned or repositioned without entry into the tank. Centralized, line-powered instrumentation indicates wet or dry tank bottom condition in bright LED lights (red for wet, green for dry). For critical tank top wet or dry condition, flashing light and audible alarm are employed.
For more information and free literature about Metritape, IncJs new Metripoint liquid level detector,