Series 1950 Explosion-proof Differential Pressure Switch
Series 1950 Explosion-Proof Differential Pressure Switch combines the best features of the popular Dwyer® Series 1900 Pressure Switch with an integral explosion-proof and weatherproof housing, making it an exceptional value for either application. It is CE, UL and CSA listed, FM approved for use in Class I, Div 1, Groups C and D, Class II Groups E, F, and G and Class III hazardous atmospheres (NEMA 7 & 9), Raintight NEMA 3 (IP54). Weatherproof features include a drain plug and O-ring seal in cover. Electrical connections are easily made by removing front cover. For convenience the set point adjustment screw is located on the outside of the housing. Twelve models offer set points from .03 to 20 in w.c. (0.0075 to 5 kPa) and from .5 to 50 psi (0.035 to 3.5 bar). The unit is very light and compact — about half the weight and bulk of other explosion-proof or weather-proof switches with separate enclosures.
CAUTION: For use only with air or compatible gases. Applications with hazardous atmospheres and a single positive pressure may require special venting.
Product Applications
- HVAC applications
- Process applications
- All-weather applications
Features
- Explosion-proof and weatherproof housing provides device protection for outdoor use or harsh environment operation
- External set point screw provides easy access that simplifies making adjustments without opening or disassembling enclosure
- Easily accessible electrical connection simplifies the installation
Support Library
Manuals
Catalog Pages
Product Data Sheet
Model Chart
EXAMPLE | 1950 | 02 | 2 | S | AT | Series 1950-02-2S-AT Explosion-proof Differential Pressure Switch, range 0.03-0.10" w.c., mica silver contact micro switch, silicone diaphragm, with aluminum tag. |
SERIES | 1950 1950P |
Explosion-proof Differential Pressure Switch (for Inches w.c. Ranges) Explosion-proof Differential Pressure Switch (for psid Ranges) |
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RANGE | 02 00 0 1 5 10 20 2 8 15 25 50 |
0.03-0.10" w.c. 0.07-0.15" w.c. 0.15-0.5" w.c. 0.4-1.6" w.c. 1.4-5.5" w.c. 3.0-11.0" w.c. 4.0-20.0" w.c. 0.5-2.0 psid 1.5-8.0 psid 3.0-15.0 psid 4.0-25.0 psid 15.0-50.0 psid |
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MICRO SWITCH TYPE | 2 6 M |
10G Mica Silver Contact 10G Phenolic Gold Contact 10G Phenolic Silver Contact |
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DIAPHRAM MATERIAL | B F N S V |
Buna-N Fluorosilicone Neoprene (1950 only) Silicone (1950 only) Fluoroelastomer (1950 only) |
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OPTIONS | AT PRESET ST |
Aluminum Tag Preset Stainless Steel Tag |
Model | Description | Availability* | Price |
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