Provide 0 ° C - three chang - 1800 ° C platinum-rhodium thermocouple ( R, S and B) The calibration of the service

Three chang instrument UKAS accredited thermocouple calibration services, used for platinum - Rhodium thermocouple, the use of zinc, silver and copper freezing point ( Maximum 1100 & deg; C) And the melting point of gold and palladium ( Maximum 1600 & deg; C) 。 In addition, including platinum melting point calibration can provide certificate of NPL ( Maximum 1800 & deg; C) 。

3 chang instrument also provides after calibration of platinum-rhodium thermocouple, the thermocouple in the building, internal calibration can provide any of the following options. Made from assemble insulators of wire. Wire diameter of 0. 5 mm, length is 2 m, thermocouple will be able to connect with or without cold connection accessories to extend the lead brass.

platinum-rhodium thermocouples are widely used in industry, temperature measurement and control for many applications. They were very popular, because they are small but strong, applicable to very high temperatures and the cost is relatively low. They also provide convenient data record and control the electrical output. Platinum rhodium thermocouple ( R, S and B) Suitable for other base metals used as a calibration standard thermocouple and high temperature applications.

use the new metal carbon fixed point calibration:

- due to the high temperature metal Carbon eutectic fixed point for a wide range of research and development, three chang now offers a service that provides and calibrated with UKAS certificate of R, S and B type thermocouple, significantly reduces the uncertainty of the measurement.

this uncertainty is through the use of cobalt - Carbon eutectic fixed point ( 1324° C) Or palladium - Carbon eutectic fixed point ( 1492° C) As the highest temperature in the calibration set point. Compared with line bridge fixed point, the Co - C and Pd - C fixed point has low inherent uncertainty.

for more information on the latest attachment, please refer to page of eutectic point and the fixed point has been the introduction of NPL calibration plan recently.

R type, range and uncertainty of S type and B type thermocouple calibration uncertainty ( Coverage rate is about 95%) :

B type thermocouple & from 400 deg; C

calibration unless otherwise specified, use of calibration points are melting/freezing point cell ( Wb = line bridge method)