The Fluke 80PK-8 is a K-type thermocouple clamp-on pipe probe for pipe outer diameters of 6.4 mm to 34.9 mm. Its spring-loaded jaw provides fast, tool-free contact temperature measurement on suction, discharge, and liquid lines without pipe modification. Applications include refrigeration commissioning, superheat and subcooling measurement, HVAC service diagnostics, and process temperature spot checks.