Mid-West Instrument”s Models 140-142 pressure gauges now provide alow-cost, loop-powered eight to 28 Vdc two wire four to 20 mAtransmitter for a variety of applications. The transmitter is containedin an aluminum housing with 1/2″ NPT wire access for easy access forfield wiring. Accuracy is +/- 2 percent from 20 percent to 100 percentof full scale. Indicator accuracy is also +/- 2 percent full scale andis independent of the transmitter output. This design provides total separation of high and low pressures by aconvoluted elastomer diaphragm. The units are available withpressure-containing elements of aluminum, brass, or 316 SS. Safeworking pressure for aluminum and 316 SS is 3,000 PSIG, and for brassit’s 1,500 PSIG. Full over-range protection is provided to full safeworking pressure. Differential-pressure ranges from zero to 20 in. H20to zero to 100 PSID (zero to 50 mbar to zero to seven bar) Gauge frontsare reinforced, engineered plastics to eliminate corrosion.
Courtesy of Malema
