Dwyer 1950-5-2F Explosion Proof Pressure Switch

The Dwyer 1950-5-2F Explosion-Proof Differential Pressure Switch is engineered for precise monitoring of differential pressure in hazardous environments. Combining the reliability of Dwyer’s Series 1900 Pressure Switch with an integral explosion-proof and weatherproof housing, this model offers exceptional performance and safety.

Key Features

• Pressure Range: 1.4 to 5.5 inches of water column (inH₂O).
• Deadband: Approximately 0.30 inH₂O at the minimum set point and 0.40 inH₂O at the maximum set point.
• Enclosure Ratings: IP54, NEMA Type 3, NEMA Type 7, and NEMA Type 9, ensuring robust protection against environmental factors.
• Temperature Limits: Operational between -40°F to 140°F (-40°C to 60°C).
• Process Connections: 1/8-inch female NPT for secure and standard fittings.
• Switch Type: Single-Pole Double-Throw (SPDT) with selectable Normally Open (NO) or Normally Closed (NC) contacts.
• Electrical Rating: 15A at 125, 250, or 480 VAC; 1/8 HP at 125 VAC; 1/4 HP at 250 VAC.
• Certifications: CE, UL, CSA, and FM approvals for use in Class I, Division 1, Groups C and D; Class II, Division 1, Groups E, F, and G; and Class III hazardous atmospheres.

Design and Construction

The 1950-5-2F features a durable aluminum housing with a Buna-N diaphragm, ensuring compatibility with air and non-combustible gases. Its explosion-proof design makes it suitable for hazardous locations, while the weatherproof construction allows for reliable outdoor installations. The external set point adjustment screw facilitates easy calibration without the need to open the housing, enhancing user convenience.

Applications

• HVAC systems requiring precise pressure monitoring.
• Industrial processes in hazardous environments.
• Outdoor installations exposed to varying weather conditions.

The Dwyer 1950-5-2F Explosion-Proof Differential Pressure Switch is a reliable and versatile solution for monitoring differential pressure in challenging and hazardous settings.