Toggle Nav
Search
CALL US
OUR LOCATIONS
Login
Cart 0
  • info@hkcalibrations.com.au
    • Menu
    Account

    Series 1831 DPDT Low Differential Pressure Switches

    DPDT Low Differential Pressure Switches
    Manual Reset, No Power Required

    Enquire
    Email Print this Page
    Get A Quote To Calibrate This Device
    Series 1831 DPDT Low Differential Pressure Switches

    Manual Reset, No Power Required

    One of our most popular differential pressure switches is now available with a DPDT switch and manual reset. The SERIES 1831 combines small size with 4% set point repeatability. Absolutely no power is required to operate the DPDT switch. Set point adjustment on the switch is easily accessible for modifying the set point.

    The Series 1831 DPDT Low Differential Pressure Switches with Manual Reset eliminate common problems associated with typical high duct static cutout installations. Since the 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 the DDC is no longer a probable system liability. Potential costly maintenance calls are diminished. Unlike typical switches that posses only a single conduit entry for both control loops, the Series 1831 provides two conduit connections simplifying wiring while eliminating additional conduit tees. The Series 1831's specifications and features make it the superior choice for high duct static cutout applications.

    Product Applications

    • High duct static cutout applications
    • HVAC
    More Information
    Model Chart
    EXAMPLE 1831 1 RA S AT Series 1831-1-RA-S-AT DPDT Low Differential Pressure Switch, range 2.5-9.0" w.c., manual reset on increase, silicone diaphragm/o-ring, with aluminum tag.
    SERIES 1831         DPDT Low Differential Pressure Switch
    RANGE   1
    2    		       2.5-9.0" w.c.
    7.5-23.0" w.c.
    SWITCH STYLE     RA     Manual Reset on Increase
    DIAPHRAGM/
    O-RINGE MATERIAL     		      S
    N
    F    		   Silicone
    Nitrile
    Silicone Free (Nitrile)
    OPTIONS         AT
    PRESET
    ST    		 Aluminum Tag
    Preset
    Stainless Steel Tag
    Service: Air and non-combustible, compatible gases.
    Wetted Materials: Consult factory.
    Temperature Limits: -30 to 180°F (-34 to 82.2°C).
    Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.
    Switch Type: 2 SPDT.
    Actuation Time Difference: 1 millisecond maximum actuation delay between contacts.
    Repeatability: ±4% max.
    Electrical Rating: 4 A @ 125/250 VAC.
    Electrical Connections: Screw type terminal block.
    Process Connections: 1/8" female NPT.
    Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
    Set Point Adjustment: Screw type inside mounting spud.
    Weight: 1 lb 2 oz (522 g).
    • No power to operate DPDT switch means no additional wiring or conduit reduces material and installation labor costs
    • Easy access for modifying set point simplifies adjustment
    • Both control contacts activate at the same time eliminating system issues where lead switch activities preventing the lagging switch from sending a signal