The thermocouple for temperature difference measurement is a practical helper in daily laboratory work. The thermometer facilitates the work at the:

• Determination of vertical temperature gradients
  Vertical temperature gradients must be determined as part of the measurement uncertainty of a calibration (e.g. according to the german DKD-R 5-4 “Calibration of dry-well calibrators”, DKD-R 5-3 “Calibration of thermocouples” or DKD-R 5-1 “Calibration of resistance thermometers”).
• Optimization of calibration furnaces
  When optimizing heating zones on calibration furnaces, such as a 3-zone high temperature calibration furnace, precise temperature differences must be determined.

It consists of two Type R or Type S thermocouples connected in opposition to each other, which are made of the same high-quality thermocouple material as our standard thermocouples. The interconnection leads to a temperature difference measurement.

The thermometer has a 500 mm long measuring point, so that the absolute deviation can be determined at the silver fixed point. In order to be able to use the thermocouple for temperature difference measurement even with deviating immersion depths, an additional inhomogeneity scan is carried out.

Technical data

Model Nr.	KK-155
Connection	temperature resistant – very low EMF stranded wires from own production
Type	Type R or Type S
Temperature range	0 °C to 1200 °C
Thermowire	Type R or Type S maximum purity available thermally annealed
Measuring point	made of gastight high-purity ceramic
Handle	maximum continuous temperature 100 °C
Dimensions
Protection tube	Ø 7 mm x 500 mm
Handle	Ø 20 mm x 95 mm
Length of thermowire	2 m
Cold junction	Ø 6 mm x 280 mm (stainless steel) with two meters of connecting cable made of low-EMF copper
Length of connecting cable	2 m very low EMF copper
Carrying case	Included (high-quality wooden case optional)