The 43000 series Capsu-Photohelic® liquid differential pressure gauge/switch combines multiple functions, a highly repeatable switch, and a high-precision differential pressure gauge. The differential pressure gauge is based on the design of our reliable and durable Magnehelic® differential pressure gauge. The Capsu-Photohelic® liquid differential pressure gauge/switch uses a diaphragm sensor that can monitor the pressure of liquids and gases up to 500 psig (34 bar). There is an optional cast copper version for water or water-based liquids. It features two photodetection DPDT switches for high/low limit control. You can conveniently change the setpoint directly via the knob on the panel. The deadband for each individual setpoint is less than 1% of full scale, and the two setpoints can interact to form an adjustable dead zone, making it suitable for applications like water pump control.

●  Gage capsule permits high-pressure usage with small differentials

●  Zero and range adjustments outside of gage means no disassembly in normal service

●  Time-proven, simple, frictionless movement that permits full scale readings as low as 0.5 in w.c.

●  Photo-electronic relays provide fast-acting switching with variable deadband control for chatter-free operation