Line of 220/240 explosion-proof, differential indicating switches are extremely light-weight and are available in compact aluminum or 316/316L. They are CSA, UL, and ATEX certified. Model 220 is piston style and has a working pressure to 4000 psi and ranges from 0-5 to 0-100 psid. Model 240 is diaphragm style and has a working pressure of 1500 psi and ranges from 0-20 in. H20 to 0-100 psid. It offers total separation between high and low side.

Mid-West Instrument, (586) 254-6500, www.midwestinstrument.com