Dwyer Series 1900 Compact Low Differential Pressure Switches

 Dwyer Company Headquarters is in Michigan City, Indiana. Dwyer uses advances computer modeling software to simulate real world situations, creating more accurate measurement techniques in our products. Innovative product designs have been recognized by industry experts, including ACHR Dealer Design Awards in the Testing and Monitoring category for 2014 and 2015.

Dwyer Series 1900 Compact Low Differential Pressure Switches



Dwyer has invested in state of the art research and development facilities for best in class product testing and verification. Dwyer has a long history of innovation in designing and manufacturing our own measurement sensors that provide superior product performance.

Series 1900 Compact Low Differential Pressure Switches

Known for quality, reliability and accuracy, Dwyer designs and manufactures a full-line of Controllers, Data Loggers, Gages, Manometers, Monitors, Remote Displays, Switches, Transmitters, and Accessories to measure, monitor and control pressure, air velocity, flow, fan pressure, duct, and more.

Dwyer’s wide selection extends to Gages, Transmitters, Switches, Data Loggers, and Monitors for Differential Pressure. Dwyer manufactures a range of dial and digital gages to reliably measure and display pressure difference, between two pressure sources using gas or liquid in a process flow.

Sensors for air and non-combustible compatible gases have an electrical contact output at a specific difference between two pressures. Applications vary between the different types of differential pressure switches. A wide variety of switches and circuit styles enables control functions needed for any system.

Our most popular Series 1900 Compact Low Differential Pressure Switch 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. For air and non-combustible compatible gases, 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. UL, CE and CSA listed, and FM approved.

Features

  • Compact size and repeatability, provides a high-value switch for many industrial and OEM applications
  • Wide range of models from 0.07 in w.c. to 20 in w.c. can meet exacting OEM specifications for a low pressure switch
  • Range screw protected inside enclosure provides simplifies making adjustments but prevents tampering

Application

  • Air conditioning refrigeration coil icing detection; defrost cycle initiation.
  • Clogged filter detection.
  • Variable air volume controller.

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Specification

ServiceAir and non-combustible, compatible gases.
Wetted MaterialsConsult factory.
Temperature Limits-30 to 180°F (-34 to 82.2°C).
Pressure Limits45" w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge.
Switch TypeSingle-pole double-throw (SPDT).
Repeatability±3%.
Electrical Rating15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Derate to 10 A for operation at high cycle rates.
Electrical Connections3 screw type, common, normally open and normally closed.
Process Connections1/8" female NPT.
Mounting OrientationDiaphragm in vertical position. Consult factory for other position orientations.
Set Point AdjustmentScrew type inside conduit enclosure.
Weight1 lb 4.5 oz (581 g).
Agency ApprovalsCE, CSA, FM, UL. Optional EXPL Explosion-proof enclosure does not possess any agency approvals.

Download Data Sheet: Series 1900 Compact Low Differential Pressure Switches

Ref: dwyer-inst.com

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