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The Honeywell FEMAEX-DWR3 EX-DGM506 is a pressure switch designed for demanding industrial applications, particularly in hazardous areas. Below are its detailed technical parameters and description.
**Product Description**
The Honeywell FEMAEX-DWR3, part of the EX-DGM506 series, is a robust, diaphragm-operated pressure switch engineered for reliable operation in potentially explosive atmospheres. It features a hermetically sealed, stainless steel sensing element and a durable aluminum enclosure with corrosion-resistant coating. This switch is certified for use in Zone 1 hazardous areas, making it suitable for oil & gas, chemical processing, and other industries where monitoring and control of gas or liquid pressure is critical under challenging conditions. Its design emphasizes long-term stability, high repeatability, and excellent resistance to vibration and shock.
**Key Technical Parameters**
* **Switch Type:** Single-pole, double-throw (SPDT) snap-action switch.
* **Electrical Rating:** Typically 10A @ 250V AC or 28V DC, resistive load. Specific ratings must be confirmed against the product datasheet for the intended application.
* **Pressure Ranges:** Available in multiple adjustable set point ranges. Common factory-set ranges include, but are not limited to, 0.5...4 bar, 1...10 bar, and 5...25 bar. The exact adjustable range is model-specific.
* **Set Point Adjustability:** The switching point is field-adjustable across the specified range via an external calibration screw.
* **Dead Band (Differential):** Fixed or adjustable depending on the specific model configuration.
* **Pressure Connection:** Standard G1/4" female thread (or as specified). Materials are typically stainless steel.
* **Process Media:** Compatible with non-corrosive gases, air, oils, and light hydraulic fluids. Media compatibility for aggressive fluids must be verified.
* **Enclosure Rating:** Meets IP66/IP67 standards, providing protection against dust ingress and water jets/immersion.
* **Hazardous Area Certification:** ATEX certified for Zone 1, Ex d IIC T6 Gb (flameproof enclosure). Also carries IECEx certification.
* **Ambient Temperature Range:** -40°C to +80°C (operating).
* **Electrical Connection:** Conduit entry via M20 x 1.5 thread or similar, with a terminal block for wire connections.
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