Completely wireless switching devices for ATEX zones 1, 2, 21 and 22
Type 8074 F wireless position switches operate without any hard-wired signal and energy supply connections
Otherwise, R. STAHL can equip these with flameproof enclosures. The Ex switching devices generate the energy required for sending data telegrams by means of an integrated induction generator: when the switching element is actuated, the kinetic energy of the switching process is electrodynamically harvested, and immediately used to feed the radio module. In contrast to battery-supplied wireless switches, these self-supporting units do not need any regular servicing to remain fully functional.
With a maximum transmitting power of 10 mW and maximum energy quantities of 50 µJ, radio communication according to the EnOcean standard does not amount to a potential ignition source in hazardous areas. Both switching units are suitable for operation in a wide temperature range from -20 to +60 °C. The IP65-protected 8040 F command devices are fitted in a ruggedized metal housing designed to withstand even extremely harsh environmental conditions.
For more than 80 years, R. STAHL has been a trendsetting manufacturer of safety technology for hazardous areas. Based in Waldenburg, Germany, the company is one of the world's leading suppliers of explosion-protected automation, control and distribution, installation, operating and monitoring, lighting, signaling and alarm components and systems. Key products include customer-specific systems solutions for hazardous areas. R. STAHL's individual packages containing tailored product combinations and a wide range of services such as consulting, project planning, engineering and training courses for customers are designed to fully meet application requirements and customer needs. International certifications, approvals and patents demonstrate the company's expertise and allow for R. STAHL's products to be used throughout the world.
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