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Online in zone 1: Remote monitoring in hazardous areas via GPRS

10 June 2009

R. Stahl's 9719-type GSM/GPRS modem allows users to benefit from the advantages of GSM/GPRS data communication in zone 1 or 2 for the first time. Thanks to IP67 protection, the unit can be installed in outdoor areas without an additional enclosure. The SIM card holder and the antenna interface are intrinsically safe, thus enabling users to safely change SIM cards or install antennas in hazardous areas.

The modem is directly connected to a PLC, an Industrial PC or an OpenHMI via an RS232 interface. It comes with a wide range of functions which can be easily controlled via the same AT command set as conventional modems for standard industry applications. An LED display continuously indicates the modem status.

GSM/GPRS data communication is ideally suited for mobile applications: additionally, GPRS allows for the establishment of cost-efficient data connections which inform users about the status of plants or the fill level of tanks. Communication is thereby rendered independent from the infrastructure installed on location, and, unlike WLAN technology, no longer requires users to implement their own radio network.