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Differential pressure switch | range 4-20″ w.c. | approx. deadband @ min. set point 0.40 | approx. deadband @ max. set point 0.60.
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 4-20″ w.c., approx. deadband @ min. set point 0.40, approx. deadband @ max. set point 0.60.^^
Fast Shipping and Professional Packaging
We can offer a variety of shipping options because of our long-term partnership with UPS FedEx DHL. Our warehouse personnel is highly-skilled and will package your items according to our precise and precise specifications. Your items are carefully inspected and secured properly prior to shipping. Every day, we send hundreds of packages to our customers from all over the world. Our determination to be the largest online retailer in the world is shown by this. The warehouses and centers of distribution are in Europe, as well as the USA.
Orders that include more than 1 item are assigned processing periods in accordance with the item.
Before shipment, all ordered items will be thoroughly inspected. The majority of orders are shipped within 48 hours. It is expected that delivery will take between 3 and seven days.
Returns
The stock is dynamic and we cannot fully manage it because multiple parties are involved, including our factory and warehouse. So the actual stock may fluctuate at any moment. Be aware that it is possible that your order could be out of stock after you have placed the order.
Our policy is valid for 30 days. If 30 days have passed in the past since you purchased and we are unable to offer an exchange or refund.
The item must not be in use and must be in the original packaging. The item must be returned in its original packaging.
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