FEMA DWR pressure switches are designed for use as pressure monitors or pressure limiters for fuel gases (in accordance with DVGW Worksheet G 260) and liquid fuels such as heating oil. They are suitable for monitoring both maximum and minimum pressure levels. The DWR series is specifically engineered for high-pressure applications (burst pressure > 100 bar) and features a robust sensor tested for over 2 million switching cycles. The DWR switches are housed in durable, seawater-resistant die-cast aluminum enclosures. The models are calibrated for rising pressure, meaning the adjustable switching pressure indicated on the scale corresponds to the activation point as pressure increases. The reset point is determined by the switching differential, which varies by model. DWR type "203" models offer an adjustable switching differential while maintaining the original calibration settings.

Features and Benefits:

• Suitable for maximum and minimum pressure monitoring
• Burst pressure for all types ≥ 100 bar, verified by TÜV test.
• Sensor tested with 2 million cycles
• Adjustable shift differential (type DWR-203)
• SIL2 approved according to IEC 61508-2

Documentation: