1831-2-RA-S

1831-2-RA-S is a series 1831 DPDT low differential pressure switch that combines small size with 4% set point repeatability. Absolutely no power is required to operate DPDT switch. Set point adjustment on the switch is easily accessible for modifying the set point. The switch with manual reset eliminates common problems associated with typical high duct static cut-out installations. Since 1831 requires absolutely no power to drive its outputs, a separate power loop and its associated additional wiring and conduit is alleviated, reducing material and labor installation costs. Both control contacts of the Series 1831 activate at the same time. The potential of the lead switch shutting down the fan preventing the lag switch from sending an alarming signal to DDC is no longer a probable system liability. Unlike typical switches that possess only single conduit entry for both control loops, it provides two conduit connections simplifying wiring while eliminating additional conduit tees.

• Range 7.5 to 23" water column
• Easy access for modifying set point simplifies adjustment
• Activate on increase
• Air and non-combustible, compatible gases
• 2 SPDT switch
• 1/8˝ female NPT connection
• Diaphragm in vertical position
• Screw type inside mounting spud
• Temperature limit range from -30 to 180°F (-34 to 82.2°C)
• Pressure limits 10psig (68.95kPa) continuous, 25psig (172.4kPa) surge