Dwyer Instruments A3001 | Pressure Switch | 0-0.04 psi | NPT 1/8 in Female | A3000 Series
The Photohelic® Switch/Gages are versatile instruments combining pressure switches with precise pressure gauges using the reliable Magnehelic® gauge design. They effectively measure and control positive, negative, or differential pressures of air and compatible gases. Standard models are rated up to 25 psig (1.7 bar), with options available for 35 (2.4) or 80 (5.5 bar) psig. The single pressure 36000S models can measure up to 6000 psig (413 bar) with a 9000 psig (620 bar) rating.
Featuring two phototransistor actuated, DPDT relays, these instruments offer precise low/high limit control. Adjustment of set points is straightforward with knobs located on the gauge face, and the individual set point deadband is exceptionally narrow, less than 1% of full scale. Set points can also be interlocked to provide variable deadband, making them ideal for controlling fans, dampers, and similar applications.
Moreover, the gauge reading remains continuous and unaffected by switch operation, even during electrical power loss. These instruments offer a wide range of full-scale pressure options, from a low 0-.25" (0-6 mm) w.c. up to 30 psi (21 bar), including single positive pressure up to 6000 psig (413 bar).
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