Dwyer Omega – Series 1900 Compact Low Differential Pressure Switch
Product Code: Series 1900
Manufacturer: Dwyer Omega
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.
Applications
Refrigeration, Refrigeration Equipment
Compliance
CE, CSA, FM, UL
Compliance Note
CE, CSA, FM, and UL. Optional-EXPL explosion-proof enclosure does not possess any compliance.
Materials, Wetted
Consult Factory
Media Compatibility
Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
Mounting Orientation
Vertical Diaphragm
Operating Temperature, Max
180 °F
Operating Temperature, Min
-30 °F
Measurement Pressure Type
Differential
Process Connection Size
1/8 in
Process Connection Type
NPT Female
Proof Pressure
Up to 45 inH2O
Repeatability
± 3%.
Set Point Adjustment
Internal Screw
Switch Note
15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @125 VAC, 1/4 HP @ 250 VAC, 60 Hz. De-rate to 10 A for operation at high cycle rates
Switch Rating
15 A @ 120-480 Vac, 1/8 HP @ 125 Vac, 1/4 HP @ 250 Vac
Weight
581 g
- 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
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