T&D World Magazine

New Rugged Temperature Sensor Designed for Difficult Environments

Spectrum Sensors and Controls has introduced a ruggedized sensor for monitoring temperature in challenging applications, such as high moisture environments where the sensor is subject to continuous freeze/thaw cycles. The sensor's thermistor element is isolated from not only outside moisture, but also the high stress of freezing and thawing through a unique, swaged end design that provides an excellent moisture seal between the cable and housing.

Spectrum's new ruggedized temperature sensor has been tested to 10,000 freeze/thaw thermal cycles, is waterproof to IP68 and has a wide operating temperature range of -40°C to 105°C. The sensor features standard resistance values with a wide variety of thermistor curves and resistances available to meet customers requirements. Standard cable length is 3 feet with optional lengths and terminals available, and the sensor can be used with Spectrum's Clip-On assembly for 3/8-inch and 1/2-inch copper pipes.

Spectrum's ruggedized temperature sensor is designed to address ice build up. In a standard temperature sensor, water can generally breach the end seal of the probe therefore allowing the ice to exert a significant force on the wire or cable. Once the water has penetrated the housing, subsequent freezing and thawing cycles help provide a direct moisture path to the thermistor element.

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