The Series AT-ADPS ATEX/IECEx Approved Differential Pressure Switch is designed for pressure, vacuum, and differential pressure applications in hazardous areas. The dual scaled adjustment knob in inches water column and Pascals allows changes to the switching pressure to be made without a pressure gage. The switch is available with settings from 0.08 in w.c. (20 Pa) up to 20 in w.c. (5000 Pa). The silicone diaphragm makes this series ideal for use with air and other noncombustible gases. Flameproof enclosures are available in aluminum and can include a glass window for viewing set point status on the adjustment knob. BENEFITS/FEATURES • Flameproof enclosure with optional glass window and aluminum housing protects  the device in hazardous areas while giving local visibility to set point status •    Increased    response    time    at    low    pressures    with    LD    port    configuration APPLICATIONS • Hazardous area pressure switch •    Air    filter    and    ventilator    monitoring • Ventilation duct monitoring • Industrial cooling circuits • Fan heater overheating protection • Fire-protection damper control • Heat exchanger frost protection