Flow Level Pressure

Differential Pressure Indicator Switch for Low Flow Monitoring

Jan 10 2008 Comments 0

MidWest Instrument’s (USA) new Model 522 differential pressure / indicator switch is a diaphragm type unit that features complete high to low side isolation…making it ideal for low flow monitoring of heat exchangers in geothermal applications.

The 522 features a max. static pressure of 1000 P.S.I.G. (69 bar), a max differential overrange pressure of 200 P.S.I.D.(13.89 bar) and differential pressure ranges of 05 to 050 P.S.I.D. with ± 5% F.S accuracy. Body materials are aluminum or 316/316L stainless steel with 316 SS, ceramic and acetal moving parts.

The 522 unit is available with one or two field adjustable (40% to 100% FS.) hermetically sealed reed switches in SPST (3 amp) configuration. Features up to 240 VAC/VDC voltage ratings, flying leads or DIN type connectors and can be custom designed to meet mounting requirements or operating conditions. Dial accuracy ± 5% standard with a 5 year warranty.
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