Description
The Dwyer 1950-1-2F is an industrial-grade explosion-proof differential pressure switch from Dwyer’s Series 1950, engineered to provide reliable pressure monitoring and control in hazardous and harsh environments. With a rugged, weather-resistant housing and precise pressure range, this switch is ideal for HVAC, process control, and safety systems where hazardous location certification and dependable performance are required.
Key Features
- Differential pressure range 0.4 to 1.6 inches water column (W.C.) — Suitable for low pressure monitoring tasks in airflow and filtration systems.
- Explosion-proof and weatherproof housing with NEMA 7/9 and NEMA 3/IP54 ratings — Provides protection in hazardous atmospheres and outdoor environments.
- Single-pole double-throw (SPDT) switch output offers flexible control or alarm signaling in automation systems.
- External set point adjustment screw simplifies calibration without opening the housing.
- Standard 1/8″ female NPT process connections make integration with existing pressure lines easy.
- Certification for hazardous locations (CE, UL, CSA, FM) — Approved for use in Class I, Div 1, Groups C&D and Class II Groups E, F, G environments.
- Wide temperature range from approximately -40 °F to 140 °F, enabling dependable operation in varied conditions.






