Single Diaphragm – Explosion Proof Differential Pressure Switch

101/121 single diaphragm explosion-proof differential pressure switches are suited for low-to-high differential pressure, fluid power, or process applications where high and varying static pressures, high over range, proof, shock pressure, or cycle rates are expected. They are one of the best-performing differential switches and provide outstanding repeatability designed for use in non-corrosive process media, however, optional components may be added for corrosive environments.

The 101L and 121L are low-cost, rugged, field-mounted instruments incorporating a flexible modular design that provides cost-effective sensing solutions. The two-piece piston design allows for complete differential pressure reversal without damage. Housings are constructed of rugged cast iron.

• Low Cost
• Ranges from 3 to 500 psid
• Set point adjustment with calibrated scale
• Versatile – several housing, switches, and diaphragm options