Dwyer Series AT1ADPS adjustable differential pressure switch is ideal for pressure, vacuum, and differential pressure systems in hazardous zones. Settings ranging from 0.08 in w.c. (20 Pa) up to 16 in w.c. (4000 Pa) are available with the switch.
Switching pressure adjustments can be done without using a pressure gage. This is enabled by the dual scaled adjustment knob in inches water column and pascals.
AT1ADPS is perfect for air or other noncombustible gases due to the silicone diaphragm. Flameproof aluminum enclosures, ATEX, are available. Set point status can be displayed on the adjustment knob by a glass window, which can be included with the enclosures.