The Isothermal range of Thermocouple Standards are the result of many years development. 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.

The covered noble metal thermocouple wire connects the measuring sheath to the reference sheath which is a 4.5mm x 250mm stainless steel sheath suitable for referencing in a 0°C reference system. Two thermo electrically free multistrand copper wires (teflon coated) connect the thermocouple to the voltage measuring device.

The thermocouple material is continuous from the hot or measuring junction to the cold, or referencing junction.

Technical Feature	Value
Model	1600
Hot Sheath Temperature Range	0°C to 1600°C (R or S)
Emf vs Temperature	According to relevant document
Response Time	5 minutes
Hot Junction Dimensions	see diagram
Connecting Cable	See diagram
Cold Junction	250.0mm long x 4.5 diameter
Copper Extension Wires	2000mm
Immersion	100mm min.
Case Dimensions	Height 65mm, Width 710mm, Depth 165mm, Gross Weight 900g
Feature	Removeable inner assembly
The standard thermocouple described can be supplied in the following noble metal combinations:	Type R: Platinum v Platinum 13% Rhodium or Type S: Platinum v Platinum 10% Rhodium
How to order	Model 1600 type R/300, Model 1600 type R/600, Model 1600 type S/300, Model 1600 type S/600. If cold junction not required, specify NCJ. UKAS Calibration included.