Temperature Measurement


Simple non-contact thermometer

December 2005 Temperature Measurement

The EL Series of infrared thermometers from PREI Instrumentation provide a 4 to 20 mA 2-wire loop-powered signal for any span of 100°C or more within the range of 0 to 500°C. The accuracy is 1% of reading or 1°C, whichever is the greater, and the response time is 200 ms. Three different optical lenses are available to provide 2:1, 10:1 or 30:1 distance to target spot diameter ratio.

These small stainless steel sensors are 18 mm in diameter, 85 mm long, rated IP65, and are suitable for ambient temperatures up to 50°C. Various accessories like mounting brackets, air purge collars and longer cables, are available.

Non-contact thermometers are suitable for food applications where cleanliness and hygiene are paramount, while their 4-20 mA output signal, which can be connected to any controller, indicator, recorder or PLC, makes them very useful in many other applications.

For more information contact Peter Tait, PREI Intstrumentation, 011 448 2172, [email protected], www.eprei.co.za



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