Non-contact temperature monitoring in hazardous areas

15 March 2016

Fluke Process Instruments has announced that all models within the MI3 infrared sensor series are now also available as intrinsically safe versions for use in hazardous environments. 

The intelligent miniature sensors are fully ATEX and IECEx certified for use in Zones 1 and 2 (gas) and Zones 21 and 22 (dust), to provide a complete intrinsically safe package including the sensor, a communication box, and an Ex power supply. All three components are IP65-rated, and each can be easily exchanged in the field without the need to re-calibrate the entire system. 

One or two intrinsically safe MI3 sensing heads can be powered by one power supply. The sensor cables can be up to 30m long, providing high flexibility for setting up safe monitoring scenarios.

The MI3 series comprises pyrometers for various spectral ranges and applications, including the 1M and 2M short wavelength models with a 100:1 resolution and 10ms response time, which are suitable for monitoring temperatures up to +1,800°C. The sensors are also said to have good EMC characteristics and can be used in ambient temperatures up to +180°C.

Communication boxes are available with RS485, Modbus, Profibus, Ethernet, and Profinet IO interfaces and with four galvanically isolated analogue outputs. 

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