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Watlow plastic melt bolt thermocouples are designed so that the sensitive closed end portion of the tip can be inserted directly into the plastic stream of an extruder or injection molding machine. The measuring junction is thermally isolated from the metal bolt mass, assuring accurate reading of the melt temperature up to 260°C (500°F) continuous. The bolt is made of 300 series stainless steel.

Over 90 years of manufacturing research and design makes Watlow a world class supplier of temperature measurement products. Watlow has designed and manufactured millions of thermocouples for industrial and commercial equipment. Instrumart is ready to meet your sensing needs with an extensive offering of Watlow thermocouples.

If the variations listed are unable to satisfy your requirements, custom manufactured sensors to your exacting specifications are available.