Thermocouple J

The range of use of J type thermocouples (Fe-Kons) is between 0ºC and 800ºC depending on the construction type to be executed. For thermocouples with output to the cable the maximum recommended temperature is 300ºC, being considerably conditioned by the extension cable type used. In the case of thermocouples with connection head this restriction does not exist, and it is possible to reach an operating temperature of 800ºC as the maximum temperature. The protection sleeves used are manufactured in stainless steel. In some constructions jacketed thermocouples must be used, also referred to as mantel thermocouples, where the single or double thermocouple wire is insulated from the exterior metal protection element by pressed magnesium oxide. The materials usually used for these protection elements are stainless and fireproof steels.