The Fluke 80PK-8 Pipe Clamp Temperature Probe uses Type-K thermocouple for fast temperature and superheat measurements of pipe surfaces. 

The Fluke 80PK-8 Pipe Clamp Temperature Probe uses Type-K thermocouple for fast temperature and superheat measurements of pipe surfaces. The 80PK-8 Type K Thermocouple Pipe Clamp Temperature Probe is designed to reliably measure the temperature of pipes ¼-inch (6 mm) to 1 3/8-inch (35 mm) in diameter, at temperatures between -29°C and 149°C (-20°F and 300°F), while retaining a long service life.

Durable ribbon sensor
Measurement range: -29 to 149°C for pipe diameters from 6.4 to 34.9 mm
One year warranty