Standard No.:	QC/T 556-1999
English Name:	Automobile Brake Temperature Measurement and Thermocouple Mounting
Chinese Name:	汽车制动器 温度测量和热电偶安装
Professional Classification:	QC    Professional Standard - Automobile
Issued on:	1993-03-15
Implemented on:	1993-3-15
Status:	superseded
Superseded by:	QC/T 556-2023 Temperature measurement methods and thermocouple installation requirements for automotive brakes
Superseded on:	2023-11-1
Superseding:	JB 3936-1985
Target Language:	English
File Format:	PDF
Word Count:	4500 words
Translation Price(USD):	110.0
Delivery:	via email in 1 business day

This standard is applicable to temperature measurement during the performance test of automotive brakes. 1 Measuring devices 1.1 Thermocouple: the thermocouple material shall be reasonably selected, and standardized thermocouple wire shall be preferred (see Annex A for the recommended thermocouple material). It is 0.3~0.5mm in diameter, and meets the technical requirements of the products upon delivery. Two structural types of thermocouple are recommended. 1.1.1 Plug-in thermocouple (see Figure 1). ... ... 1.1.2 Armored thermocouple: thermocouple made of thermocouple wires, insulating material and metal sleeve through processing, soldering and assembling, which may be ordered from the manufacturer as needed. 1.2 Display and recording device: secondary instrument for displaying and recording the dynamic temperature of brake shall be reasonably selected.

1 Measuring devices 2 Thermocouple installation 3 Measurement method 4 Recording and plotting of curves (together with the record form and curve of brake test) Annex A (Informative) Technical data of standard thermocouple Annex B K values of five types of thermocouple (Informative) Additional explanation