Dwyer 1911-00 is a compact low differential pressure switch that operates in a temperature range of -30 to 180°F (-34 to 82.2°C). It has 3 screw type electrical connections, suitable for air and non-combustible gases. The diaphragm should be mounted in a vertical position. The wetted material and other mounting orientations should be consulted with the factory. It has a pressure limit of 45" w.c. (11.2 kPa) continuous and 10 psig (68.95 kPa) surge. The process connection is 1/8" female NPT. The repeatability is ±3%, and it has an electrical rating of 15 A @ 120-480 VAC, 60 Hz. The switch type is single-pole double-throw (SPDT) and set point adjustment is screw type inside the conduit enclosure.