1950-5-2F Dwyer Differential Pressure Switch Explosion Proof IP54 SPDT

1950-5-2F Dwyer Explosion-Proof Differential Pressure Switch

The 1950-5-2F delivers accurate differential pressure monitoring in hazardous industrial environments.
This Dwyer 1950 Series switch integrates explosion-proof protection with compact and lightweight construction.
It supports reliable switching for air and non-combustible gases across demanding process conditions.
Engineers select this unit for safety-critical systems requiring stable and repeatable pressure control.
Oiltech Controls supplies this model for high-performance applications with strict safety compliance requirements.

Performance Advantages

• Provides explosion-proof protection for hazardous industrial zones.
• Supports SPDT switching for flexible control circuit integration.
• Maintains high accuracy across low differential pressure ranges.
• Uses compact housing with reduced weight compared to similar devices.
• Ensures stable operation with minimal maintenance requirements.

Technical Specifications

• Brand: Dwyer Instruments
• Model: 1950-5-2F
• Series: 1950 Series
• Switch Type: SPDT (Single-pole double-throw)
• Electrical Rating: 15A @ 125/250/480 VAC, 60 Hz
• Horsepower Rating: 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC
• Enclosure Rating: IP54 (NEMA 3)
• Hazardous Rating: NEMA 7 & 9 explosion-proof
• Process Connection: 1/8″ female NPT
• Mounting Orientation: Vertical diaphragm position
• Temperature Range: -40°F to 140°F (-40°C to 60°C)
• Pressure Media: Air and non-combustible gases
• Set Point Adjustment: External screw type
• Weight: 3.25 lb (1.5 kg)
• Certifications: CE, UL, CSA, FM

Oiltech Controls’s Insight

• The 1950-5-2F excels in hazardous environments requiring explosion-proof reliability.
• The external setpoint adjustment improves usability during field calibration.
• The integrated enclosure reduces installation complexity and saves panel space.
• This model performs well in low-pressure monitoring with high switching stability.
• It offers strong value compared to bulkier explosion-proof alternatives.

Recommended Applications

• HVAC systems requiring airflow and filter monitoring.
• Industrial gas handling systems in hazardous areas.
• Dust collection and ventilation safety monitoring.
• Process control systems in chemical plants.
• Combustion air proving and pressure safety circuits.

Installation and Usage Notes

• Mount the device vertically to ensure accurate diaphragm response.
• Use proper sealing on 1/8″ NPT connections to prevent leakage.
• Install in environments within specified temperature limits.
• Ensure correct wiring to SPDT terminals for reliable switching.
• Follow hazardous area installation standards during setup.

Logistics and Service

• Ships within 24–28 hours after order confirmation.
• Supports delivery via
  FedEx,
  UPS, and
  DHL.
• Includes 12-month warranty for quality assurance.
• Uses protective packaging suitable for industrial transport.

FAQ

• How do I choose the correct pressure range?
  Select a model with a setpoint range matching your system operating pressure and safety margin.
• Can this switch be used outdoors?
  It supports weather-resistant operation, but install it in protected environments for extended lifespan.
• What gases are compatible with this device?
  Use only air and non-combustible gases to ensure safe and stable operation.
• How often should calibration be performed?
  Check calibration periodically based on system criticality and operating conditions.
• What is the key factor when selecting explosion-proof switches?
  Verify hazardous area classification and ensure certification compliance with your installation zone.

Contact Information

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923

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