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JJF 1379-2012 English PDF

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US$459.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1379-2012: Calibration Specification of Thermistor Thermometers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1379-2012	459	Add to Cart	4 days	Calibration Specification of Thermistor Thermometers	Valid

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Basic data

Standard ID: JJF 1379-2012 (JJF1379-2012)
Description (Translated English): Calibration Specification of Thermistor Thermometers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A54
Classification of International Standard: 17.120
Word Count Estimation: 20,252
Older Standard (superseded by this standard): JJG 363-1984; JJG 367-1984
Regulation (derived from): AQSIQ Announcement No. 206 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to measurement range (-50 ~ +200)��C, the sensor is a thermistor thermometer calibration.

JJF 1379-2012: Calibration Specification of Thermistor 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.
Calibration Specification of Thermistor Thermometers People's Republic of China National Metrology Technical Specifications Thermistor thermometer calibration specification Issued on. 2012-12-12 2013-06-12 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Thermistor thermometer calibration specification Thermometers Instead of JJG363-1984 JJG367-1984 Focal point. the National Technical Committee of temperature measurement Main drafting unit. Hebei Institute of Metrology Hebei Academy of Supervision and Testing China Shipbuilding Industry Corporation, Institute of the seventh eighteen Participated in the drafting unit. Sensing Branch of Xinjiang limited liability company Gaobeidian City WAC Electronic Factory This specification commissioned the National Technical Committee is responsible for interpretation of temperature measurement The main drafters of this specification. Kangzhi Ru (Hebei Science Institute of Measurement) Gengrong Qin (Hebei Supervision and Testing Institute) Jin Chen (China Shipbuilding Industry Corporation, Institute of the seventh eighteen) Drafters participate. Chen Su (Hebei Supervision and Testing Institute) Guo Qiang (Hebei Science Institute of Measurement) David Wang (Xinjiang Branch sensing limited liability company) Gao Qing (the Gaobeidian City, Georgia Electronic Factory)

Introduction (Ⅲ) 1 Scope (1) 2 Overview (1) 3 Metrological characteristics (1) 3.1 Insulation resistance (1) 3.2 indication error (1) 3.3 Stability (2) Calibration Condition 4 (2) 4.1 environmental conditions (2) 4.2 Standard device and other ancillary equipment (2) 5 calibration, inspection items and methods (2) 5.1 Calibration, inspection items (2) 5.2 Calibration, inspection method (3) 6 calibration expression (4) 7 Recalibration interval (4) Appendix A thermistor thermometer calibration record format (5) Appendix B thermistor thermometer calibration certificate page format (7) Appendix C thermistor thermometer to check the stability of the method (8) Appendix D thermistor thermometer measuring indication error in a sample Evaluation of Uncertainty (9) Appendix E thermistor thermometer measuring indication error Evaluation of Uncertainty Example Two (12)

Introduction

Based JJF 1071-2010 "National Calibration Specifications writing rules", JJF 1059-1999 "Measurement Uncertainty Evaluation and Expression "and JJF 1001-2011" common measurement terms and definitions ", prepared a draft" thermistor thermometer school Standard Specification. " This specification replaces JJG367-1984 "grain temperature thermistor meter" and JJG363-1984 "semiconductor point thermometer." JJG367-1984 "thermistor food thermometer" by the National Measurement Bureau December 13, 1984 approved, in 1985 October 1 implementation. JJG363-1984 "semiconductor point thermometer" by the National Measurement Bureau in December 7, 1984 approved From December 1, 1985 into effect. Since the implementation of two regulations, it has not been revised. The main technical specification changes are as follows. --- Specification covers all levels of precision thermistor thermometer calibration; --- Increased measurement uncertainty evaluation sample; --- Introduction of stability inspection method in Appendix C; --- Remove the sensor allows the provisions of errors. Thermistor thermometer calibration specification

1 Scope

This standard applies to the measurement range (-50 ~ 200) ℃, the sensor is a thermistor thermometer (hereinafter referred to as Thermometer) calibration.

2 Overview

Thermometer thermistor sensor and indicator composition. Its working principle is to use the thermistor resistance with temperature Variation and change characteristics of temperature measurement. It features fast response, low temperature sensing element, measured in the narrow zone The amount of accuracy.

3 Metrological characteristics

3.1 Insulation resistance At ambient temperature of 15 ℃ ~ 35 ℃, relative humidity of 45% to 75%, each end of the thermometer display instrument Between the child, the insulation resistance between the sensor lead and its housing shall not be less than the requirements of Table 1. Table 1 Insulation resistance Technical Requirements No. Test Point Insulation resistance MΩ 1 power supply - or housing 40 2 input terminals - or casing 20 3 input terminals - Power terminals 40 4 wire sensor - the sensor housing 20 3.2 Indication error Thermometer indication error following two representations. 3.2.1 directly measured value representation see equation (1). Δ = ± K (1) Where. Δ --- Allow indication error, ℃; K --- indication error allowable limit, ℃. 3.2.2 in order to quantify the range and units and the measured values relating to representation see equation (2). Δ = ± (a% FS bd) (2) Where. Δ --- Allow indication error, ℃; ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1379-2012_English be delivered?

Answer: Upon your order, we will start to translate JJF 1379-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1379-2012_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1379-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.