Testo 0628 7533 type k temperature probe with stainless steel sleeve testo 0628 7533 this testo thermocouple tc temperature probe can be used for measurements in liquids pastes and in air it has a standard k type plug suitable for use with any testo device having a k type input socket the temperature probe measures 6mm dia x 40mm long and has a 1 9m cable it features an acid resistant stainless steel sleeve making it suitable for measurements in the food industry testo 0628 7533 type