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www.ChineseStandard.net Database: 189760 (18 Oct 2025)

JJG 1158.2-2018 English PDF

US$229.00 · In stock
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JJG 1158.2-2018: Rail Thermometers--Part 2: Digital Rail Thermometers
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 1158.2-2018	English	229	Add to Cart	3 days [Need to translate]	Rail Thermometers--Part 2: Digital Rail Thermometers	Valid	JJG 1158.2-2018

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JJF 1366 JJF 1187 JJF 1107 JJG 1164 JJG 1162 JJG 1158.1

Basic data

Standard ID	JJG 1158.2-2018 (JJG1158.2-2018)
Description (Translated English)	Rail Thermometers--Part 2: Digital Rail Thermometers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A54
Word Count Estimation	10,115
Date of Issue	2018-12-25
Date of Implementation	2019-03-25
Regulation (derived from)	State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies)	State Administration for Market Regulation

JJG 1158.2-2018: Rail Thermometers--Part 2: Digital Rail Thermometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Rail gauges - Verification procedures - Part 2. Digital rail thermometers) National Metrology Verification Regulations of the People's Republic Rail thermometer Part 2. Digital rail thermometer Part 2. DigitalRailThermometers Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released Rail thermometer test procedure Part 2. Digital rail thermometer Part 2. DigitalRailThermometers Focal Point. National Railway Special Measuring Instrument Measurement Technical Committee Main drafting unit. Center for Metrology, China Railway Guangzhou Bureau Group Co., Ltd. China Railway Science Research Institute Group Co., Ltd. Standard Measurement Research Research institute China Railway Harbin Bureau Group Co., Ltd. Quality and Technical Supervision Office Participated in the drafting unit. Technical Supervision Office of China Railway Shanghai Bureau Group Co., Ltd. China Railway Nanchang Bureau Group Co., Ltd. Technical Supervision Office China Railway Chengdu Bureau Group Co., Ltd. Metrology Institute This regulation entrusts the national railway special measuring instrument measurement technical committee to explain The main drafters of this procedure. Hong Song (China Metro Guangzhou Bureau Group Co., Ltd. Center Metrology Institute) Li Junxia (Standard Metrology Institute, China Railway Science Research Group Co., Ltd.) Tan Ying (Quality and Technical Supervision Institute of China Railway Harbin Bureau Group Co., Ltd.) Participate in the drafters. Wu Wenting (Technical Supervision Office of China Railway Shanghai Bureau Group Co., Ltd.) Huo Yanhong (Technical Supervision Office of China Railway Nanchang Bureau Group Co., Ltd.) Zhao Rui (China Railway Chengdu Bureau Group Co., Ltd. Metrology Institute)

Introduction II 1 Scope 1 2 Overview 1 3 Metrology performance requirements 1 3.1 indication error 1 3.2 Indication variation 1 3.3 Working voltage 1 3.4 Adsorption force 1 3.5 Resolution 1 4 General technical requirements 1 4.1 Appearance 1 4.2 Identification 1 4.3 Digital display 1 5 measuring instrument control 1 5.1 Verification conditions 2 5.2 Verification project 2 5.3 Verification method 2 5.4 Processing of verification results 4 5.5 Verification cycle 4 Appendix A Digital Rail Thermometer Verification Record Format 5 Appendix B Verification certificate and verification result notice page format 6

Introduction

JJG 1158 "Steel Thermometer" consists of the following two parts. --- Part 1. Bimetal rail thermometer; --- Part 2. Digital rail thermometer. In the use of this procedure for the rail thermometer temperature test, the corresponding procedure should be selected according to the type of rail thermometer section. This regulation is based on TG/GW115-2012 "High-speed railway ballastless track maintenance rules" (trial) Made. This procedure is the first release. Rail thermometer test procedure Part 2. Digital rail thermometer

1 Scope

This procedure applies to the first verification, subsequent verification and in-use inspection of digital rail thermometers.

2 Overview

The digital rail thermometer (hereinafter referred to as the rail thermometer) uses a temperature sensor as a temperature sensing element and is displayed by a secondary meter. A thermometer that shows the temperature of the rail. The gauge of the gauge is (-40~70) °C.

3 Metrological performance requirements

3.1 indication error The maximum allowable error of the gauge is ±1.0 °C. 3.2 Variation of indication value The indication value of the gauge should be no more than 2 words. 3.3 Working voltage The operating voltage of the rail thermometer is the voltage specified in the instruction manual. When the battery is low, the display should have a low battery. Instructions. The indication error of the gauge should not exceed ±1.0 °C when there is a low battery indication. 3.4 Adsorption force The adsorption force of the rail thermometer should be no less than 1.96N at the first inspection, and the subsequent inspection should be no less than 1.47N. 3.5 resolution The gauge should show a resolution of no more than 0.1 °C.

4 General technical requirements

4.1 Appearance The shape of the gauge should be intact, and the digital display panel should not have defects that hinder correct reading. The layer should not have rust and plating peeling off. The temperature-sensitive working surface should not have local convex and concave phenomenon, and there should be no oxide film or grease stain. And substances such as dust that affect the accuracy of temperature measurement. The connection between the rail thermometer sensor and the secondary instrument should be reliable. A rail thermometer in use allows for defects that do not affect accuracy. 4.2 Identification The gauge should be marked with the name of the manufacturer or the factory standard, the model of the gauge, the factory number, and the temperature unit (°C). 4.3 Digital display The temperature display of the rail thermometer should be continuous without stacking, uniform brightness, and there should be no phenomenon such as no light, lack of strokes, etc., decimal point The settings are correct.

5 measuring instrument control

Metering device controls include initial verification, subsequent verification, and in-use inspection.

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