SA1112E-A4-K1

SA1112E-A4-K1 is a series SA1100 diaphragm operated pressure switch. It is a weatherproof and explosion-proof in one economical enclosure. Extremely rugged construction assures excellent reliability in chemical, petroleum and industrial plants. The rolling diaphragm design maintains a constant effective area to minimize friction. This results in a minimum deadband as low as 5% of full-scale. Since many applications require higher dead bands, SA1100 includes a separate adjustment of this when necessary. A pump being used to control liquid level in a tank would be a typical situation where this feature would be important. Both set point and deadband adjustments are protected, yet clearly visible behind a clear polycarbonate window and are fully isolated from the electrical components for additional safety. A 7/16" open-end wrench is the only tool required to change settings. Terminal blocks are provided for switch wiring connections and both internal and external ground screws included.

• Weatherproof NEMA 4X, explosion-proof NEMA 7, 9 construction
• Adjustable range 20 to 250psig (1.4-17.2bar)
• SPDT snap action switch
• Switch rated 15A at 125/250/480VAC, 1/8HP at 125VAC, 1/4HP at 250VAC, 1/2A at 125VDC, 1/4A at 250VDC
• Aluminium pressure chamber material (wetted)
• Buna-N diaphragm and o-ring diaphragm material (wetted)
• Burst pressure protection prevents device failure where high-pressure surges may damage device
• Adjustable deadband reduces equipment cycling and potential failure
• Visible set point and deadband adjustments
• 3/4" female NPT conduit connection, 1/2" female NPT process connection