The type R and S standards will cover the range from 0°C to 1600°C.
The measuring assembly comprises a 7mm x 300mm or 600mm gas tight 99.7% recrystallized alumina sheath inside which is a 2.5mm diameter twin bore tube holding the thermocouple. The inner 2.5mm assembly is removable since some calibration laboratories will only accept fine bore tubed thermocouples and some applications require fine bore tubing.
■Typ R and Type S
■Gas tight assembly
■Premium grade wire