Single Diaphragm – Explosion Proof Differential Pressure Switch

General Instructions
Product Bulletins
101L, 121L
3 to 500 psid, 0.2 to 35 bar
Unit: INMETRO, RTN, SIL, UL (as an outlet box)
3 Years
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101/121 single diaphram 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 overrange, 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 provide 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
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SOR offers many special services in support of our Original Equipment Manufacturers and other large volume customers. Examples include special naming, exclusive name plates, discriminative labels and even distinctive model numbers or designators. SOR will support and accept orders for the Representative’s special M3Y promoted products. If this program is selected by the customers, SOR will provide M3Y labeled units so that the Representative will know who purchased the products and the Representative can provide exceptional after sales service.