Designed for long-term use where economy is a factor, NHXH hollow-pin thermocouple plugs are ideal for high-temperature applications. NHXH connectors are permanently dot colour-coded to conform to IEC or ANSI standards. For applications such as high vacuum furnaces where contamination would adversely affect the process, UHXH connectors are shipped with a removable coded dot. Temperature is limited by the thermocouple alloys used, types K and J can be used at temperatures up to 650°C and type T can be used accurately over its entire range of 390°C. Noble metal types are limited by the compensating alloys to ambient use of 260°C. No damage will be done by exposure to higher temperatures, but accuracies may exceed limits of error if a temperature gradient exists across the connector.
NHX ceramic thermocouple plugs feature solid-pins, for an extra heavy duty construction.