Dwyer Series 1900-5 Compact Low Differential Pressure Switch Range 1.40-5.5" W.C
6,500 Per Piece
12 Piece(s) (MOQ)
Dwyer Series 1900-5 Compact Low Differential Pressure Switch Range 1.40-5.5" W.C RANGE 1.40-5.5" W.C. DESCRIPTION Most popular SERIES 1900 combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications. Series 1900 switches have set points from 0.07 to 20" w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside conduit enclosure. Internal location helps prevent tampering.• Compact size and repeatability, provides a high-value switch for many industrial and OEM applications. • Range screw protected inside enclosure provides simplifies making adjustments but prevents tampering.
DPDT Low Differential Pressure Switch
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1 Piece (MOQ)
One of our most popular differential pressure switches is now available with a DPDT switch and manual reset. The 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.
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A pressure switch is a form of switch that closes an electrical contact when a certain set pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. The pressure switch may be fixed or adjustable, by moving the contacts or adjusting tension in a counterbalance spring. Industrial pressure switches may have a calibrated scale and pointer to show the set point of the switch. A pressure switch will have a differential range around its setpoint in which small changes of pressure do not change the state of the contacts. Some types allow adjustment of the differential. Switches designed for use in hazardous areas with flammable gas have enclosure to prevent an arc at the contacts from igniting the surrounding gas. Switch enclosures may also be required to be weatherproof, corrosion resistant, or submersible. Alfacool use reputed make switches ie Danfos, wiki, emerson, sigma etc.
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Flameproof pressure switches are designed as per is2148 for gas gr. Iic flameproof - ce certification and approved by a leading european lab � �baseefa� for atex & iceex certificates various ranges : from 0 to 150 mm wc upto 0 to 400 bar differential (dead band) : fixed (within 10% of set value) or, adjustable sensing element : diaphragm (ptfe, neoprene or, ss 316) or piston enclosure : flameproof to group iic
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