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ifm

Inka Krischke,

Connecting temperature measurement technology via IO-Link

Temperature measurement technology based on resistance thermometers or thermocouples is widely used in many applications. To integrate these into a digitized environment, ifm now offers an IO-Link temperature measurement module.

© ifm

Temperature measurement in industrial production environments is usually based on two physical effects: the temperature dependence of a resistor or the thermoelectric effect (Seebeck effect). Ifm now offers new IO-Link temperature measurement modules for such resistance thermometers (Pt100 and Pt1000) and thermocouples (type J and type K). The measured temperature values are made available digitally to higher-level controllers via IO-Link. The resistance thermometers and thermocouples are connected via four M12 connectors on the module. The resistance thermometers can be connected using 2-, 3- or 4-wire technology and the individual connections are parameterized via IO-Link. The type of measuring element - Pt100, Pt100, thermocouple type J or type K - is specified there. For thermocouples, the cold junction offset and zero-point calibration parameters can also be set depending on the measuring lead. The resolution of the temperature measurement with the module is 0.01 °C, the accuracy is ±0.3 % over the entire measuring range. With protection class IP67 or IP69K, the modules can also be used in harsh industrial environments.

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