Dwyer Instruments’ flame-proof ATEX-approved Series AT1ADPS Adjustable Differential-Pressure Switch is designed for pressure, vacuum, and differential pressures. The dual-scaled adjustment knob in inches water column (w.c.) and pascal allows changes to the switching pressure to be made without a pressure gauge. The pressure switch is available with settings from 0.08 inch w.c. (20 Pa) up to 16 inch w.c. (4,000 Pa). The silicone diaphragm and PA 6.6 body make this product a good fit for use with air and other noncombustible gases. Flame-proof ATEX enclosures are available in aluminum and can include a glass window for viewing setpoint status on adjustment knob.