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Differential pressure switch | range .15-.50″ w.c. | approx. deadband @ min. set point 0.10 | approx. deadband @ max. set point 0.15.
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
- 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
- Series
- 1950 Explosion-proof Differential Pressure Switch
- Category/Type
- Pressure
- Type
- Differential Pressure
- Series
- 1950 Explosion-proof Differential Pressure Switch
- Service
- Air and non-combustible; compatible gases.
- Wetted Materials
- Consult factory.
- Temperature Limits
- -40 to 140°F (-40 to 60°C); 0 to 140°F (-17.8 to 60°C)for 1950P-8; 15; 25; and 50. -30 to 130°F (-34.4 to 54.4°C) for 1950-02.
- Pressure Limits
- Continuous: 1950’s – 45″ w.c. (0.11 bar); 1950P’s – 35 psi (2.41 bar); 1950P-50 only – 70 psi (4.83 bar). Surge: 1950’s – 10 psi (0.69 bar); 1950P’s – 50 psi (3.45 bar); 1950P-50 only – 90 psi (6.21 bar).
- Enclosure Rating
- NEMA 3 (IP54); NEMA 7 and 9.
- Switch Type
- Single-pole double-throw (SPDT).
- Electrical Rating
- 15 A @ 125; 250; 480 VAC; 60 Hz. Resistive 1/8 HP @ 125 VAC; 1/4 HP @ 250 VAC; 60 Hz.
- Electrical Connections
- 3 screw type; common; normally open and normally closed.
- Process Connections
- 1/8″ female NPT.
- Mounting Orientation
- Diaphragm in vertical position. Consult factory for other position orientations.
- Set Point Adjustment
- Screw type on top of housing.
- Weight
- 3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg).
- Agency Approvals
- CE; CSA; FM; UL.
Resources
^^Differential pressure switch, range .15-.50″ w.c., approx. deadband @ min. set point 0.10, approx. deadband @ max. set point 0.15.^^
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Note: Orders that contain more than one item will be assigned a different processing time for each item.
Prior to shipping, we will conduct a thorough inspection of the items you've ordered. Today, the majority orders will be shipped within 48 hours. The time to deliver varies from 3-7 days.
Returns
The stock is constantly changing. It is not managed entirely by us since we're involved with several parties such as the factory and our storage. The actual inventory can change at any moment. You may not receive your order after it's been placed.
Our policy lasts for a period of 30 days. If you don't receive your product within the 30 days period, we are not able to issue the option of a refund or exchange.
In order for your item to be considered eligible for return the item must not be opened and in the same state as you received it in. It must also be in the original package.
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