The "standard" thermocouple series is available in a size 1 housing with 3 contacts. Includes 1 contact of Ø 2 mm and 2 contacts of Ø 3 mm. Non-removable contacts, for soldering. Visual identification of thermocouple type using coloured rings: black (type J), green (type K) or brown (type T) The probe tip allows direct fitting of a probe tube or sheath to the connector.