Communication in Hazardous Areas

9730 Series HF Isolators

24.04.2015 Series 9730 HF Isolators from R. Stahl enable users to deploy any type of standard industrial antennas for radio communication in hazardous areas. These antennas can be connected via customizable cables with plug connectors.

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9730 Series HF Isolators

The isolator tolerates rough climatic conditions with ambient temperatures ranging from -60 to 80 °C (Picture: R. Stahl)

This solution shields the surrounding atmosphere from all ignition risks by means of electrical isolation: only an intrinsically safe signal (Ex ia IIC) is transmitted to the external antenna. The antenna can therefore never be exposed to electrical currents caused by radio device malfunctions. This system thus dispenses with the need for special antennas certified for explosion protection. Such special-purpose antennas are usually costly, only available in a limited range of types, and often depend on fixed cables without plug connectors that are difficult to modify. Instead, any standard antenna can be used and connected to the isolator via conventional coaxial connectors. Such antennas can therefore easily be repositioned, serviced, or replaced. The isolator tolerates rough climatic conditions with ambient temperatures ranging from -60 to 80 °C. Using the ISM frequency bands around 900 MHz, 2.4 GHz, and 5 GHz, the isolator supports all wireless transmission standards commonly applied in industrial environments (WiFi 802.11 a/b/g/n; Wireless Hart; ISA 100.11a; Bluetooth; Zigbee; En Ocean). In addition to the isolators, the manufacturer provides a wide range of Ex d and Ex p enclosures for radio systems.

Facts For Decision-Makers:

Ex ia IIC 900 MHz, 2.4 GHz, and 5 GHz -60 to 80 °C

Achema 2015 Hall 11.1 – C45

 

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