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Dwyer series 3020SGT photohelic pressure switch
From the Dwyer Instruments website: The Series 3020SGT Photohelic Switch/Gage/Transmitter combines several critical control functions into a single, easy-to-install package. This versatile instrument starts with the universally accepted standard forr reliable low air pressure measurement, the Dwyer Magnehelic Gage. It measures positive, negative or differential pressures within 2% of full scale accuracy. This time-proven component provides highly reliable analog indication of air or compatible gas pressure on a 4", 80 scale. Gage operation is completely independent functions normally even if power is interrupted to electrical elements of the control.
The Series 3000SGT Photohelic Switch/Gage includes a separate 4-20 mA, 2-wire transmitter operating from an external 10-35 VDC power supply. Separate adjustments are included for zero and span inside the rear electronics enclosure.
If you have any questions regarding this or any other Pressure Switch, give O.A. Newton a call (***) 726-5745.
