NIM is developing an absolute radiation thermometer to determinate the temperature of metal-carbon eutectic points. The metal-carbon eutectic points are considered as candidates of new fixed points in high temperature.The first round of...
Division of Thermophysics and Process Measurements
Division of Thermophysics and Process Measurements
Overview
Radiation Temperature Laboratory establishes and maintains International Temperature Scale of 1990, ITS-90 above the silver fixed point (1234.93K). It is responsible for dissemination and comparison of radiation thermometry temperature scales from -50°C ~ 3000 °C as the nation’s temperature scale while drafting and establishing its technical criterion. The research field of this lab includes thermodynamic temperature measurement by radiation...
-
ITS-90 Primary standard from 961.78℃ to 2474℃
Based on NIM’s developed primary standard pyrometer, an improved scheme, an "fixed-point blackbody – pyrometer" assembly, was applied to realize and disseminate International Temperature Scale of...
-
Development of Variable Temperature Blackbody Sources...
Radiation characteristic of blackbody radiation sources depends on temperature and spectral emissivity. Many blackbody radiation sources can only realize removable contact thermometer trace to ITS-90 because the emissivity of blackbody radiation...
-
Research of High Temperature Fixed Points (HTFPs)
With rapid development of modern science and technology, accurate measurement of high temperature is widely applied and thus its calibration is urgently required. It is known that the uncertainty...
-
A Research of Near Infrared Radiation Thermomter
An InGaAs radiation thermometer has been set up as a standard radiation thermometer from 200°C to 1084°C at NIM. The uncertainty at the four fixed points of Sn, Zn, Al and Cu are 28mK, 30mK, 42mK...
-
Statistical Relationship Between Human Surface- and Body- Temperatures
Statistical relationships between body and skin temperatures are the key factors that affect the accuracy of estimating armpit temperature from forehead temperature. Based on the statistics, a...
-
Research of the Material’s Spectral Emissivity Measurement in IR Range
We presents a novel method of heating the sample, the dual channel hot air heating method, with a purpose of making sure that the heat flux is nearly equal to zero inside the sample. It is...
International Cooperation
-
National Institute of Metrology (NIM), China, has an early and good relationship with National Metrology Institute of Japan (NMIJ). Three staff members (Wang Tiejun, Bai Chengyu and Lu Xiaofeng) of NIM worked at NMIJ as guest researchers for a...
-
National Institute of Metrology (NIM), China, and Physikalisch-Technische Bundesanstalt (PTB), Germany, have a good cooperation in developing and improving thermodynamic temperature measurements using radiometric methods for investigation of...
-
In 2006, NIM sent Wang Tiejun to NPL, who joined in an cooperation research work with NPL on manufacturing and reproducibility of the eutectic Pt-C HTFP. In 2010, NIM sent Dongwei to NPL, to study international ITS comparison among NIM (China),...
-
In addition, NIM plays an active role in international HTFP project conducted by CCT-WG5. In international cooperation research project of HTFPs, NIM took part in four of the five work packages. They are WP1, WP2, WP3 and WP5. In WP1, NIM...
National Measurement Standards and CMCs
Services
As of Dec 2008, the division provides 148 verification, 45 calibration and 26 testing services.
Staff
- +86-(0)10-6452-5105/6317 Yuan Zundong
- Head of Lab
- yuanzd@nim.ac.cn
- +86-(0)10-6452-6301 Lu Xiaofeng
- Associate Researcher
- luxf@nim.ac.cn
Contact Us
General Information
Address: No.18, Bei San Huan
Dong Lu, Chaoyang Dist, Beijing, P.R.China, 100013
Leader: Yuan Zundong
Emial: yuanzd@nim.ac.cn
Tel: +86-10-645256301