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JJG 875-2019 English PDF

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Q: Should I purchase the latest version JJG 875-2019?

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US$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 875-2019: Digital Pressure Gauges
Status: Valid

JJG 875: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 875-2019	419	Add to Cart	4 days	Digital Pressure Gauges	Valid
JJG 875-2005	679	Add to Cart	3 days	Verification Regulation of Digital Pressure Gauges	Obsolete
JJG 875-1994	399	Add to Cart	3 days	Digital pressure gauges	Obsolete

Similar standards

JJG 882 GB/T 36126 GB/T 1885 JJG 876 JJG 877

Basic data

Standard ID: JJG 875-2019 (JJG875-2019)
Description (Translated English): Digital Pressure Gauges
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Classification of International Standard: 17.100
Word Count Estimation: 18,147
Date of Issue: 2019
Date of Implementation: 2020-03-31
Issuing agency(ies): State Administration for Market Regulation

JJG 875-2019: Digital Pressure Gauges

---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.
Digital Pressure Gauges National Measurement Verification Regulations of the People's Republic of China Digital pressure gauge Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Verification Regulation of Digital Pressure Gauge Replace JJG 875-2005 Centralized unit. National Pressure Measurement Technical Committee Main drafting unit. China Institute of Testing Technology Shanghai Institute of Metrology and Testing Technology Participated in the drafting unit. Zhejiang Institute of Metrology Beijing Const Instrument Technology Co., Ltd. Hongqi Instrument Co., Ltd. This regulation is entrusted to the National Pressure Measurement Technical Committee for interpretation The main drafters of this regulation. Gan Rong (China Institute of Testing Technology) Tu Limeng (Shanghai Institute of Metrology and Testing Technology) Li Yanling (China Institute of Testing Technology) Participating drafters. Hao Luoliang (China Institute of Testing Technology) Cai Fei (Zhejiang Institute of Metrology) He Xin (Beijing Const Instrument Technology Co., Ltd.) Zhou Chunlong (Hongqi Instrument Co., Ltd.)

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 4 Overview (1) 5 Measurement performance requirements (2) 5.1 Indication error (2) 5.2 Return error (2) 5.3 Zero drift (2) 5.4 Periodic stability (2) 5.5 Zero error of static pressure (2) 6 General technical requirements (2) 6.1 Appearance (2) 6.2 Insulation resistance (3) 7 Control of measuring instruments (3) 7.1 Verification conditions (3) 7.2 Verification items (3) 7.3 Verification method (4) 7.4 Processing of verification results (6) 7.5 Verification period (6) Appendix A Digital Pressure Gauge Verification Record Format (7) Appendix B Digital Pressure Gauge Verification Certificate (Inner Page) Format (9) Appendix C Digital Pressure Gauge Verification Results Notice (Inner Page) Format (10) Appendix D. Additional error correction methods for verification caused by the height difference of the working medium (11)

Introduction

JJF1002-2010 "Rules for Compiling National Measurement Verification Regulations", JJF1001-2011 "General Measurement Terms and "Definition", JJF1059.1-2012 "Measurement Uncertainty Evaluation and Expression" together form the basis for the revision of this code Basic series of specifications. Compared with JJG 875-2005 "Digital Pressure Gauge", in addition to editorial changes, the main technical changes are as follows. --- According to the requirements of the introduction of JJF1002-2010 "Rules for the Compilation of National Metrological Verification Regulations" as necessary content Added the introduction part; --- Added terms and units of measurement; --- Added 2.5 and 4 levels of accuracy level division; --- According to actual needs, the division of accuracy level has been adjusted; --- The concept of measuring range has been re-described; --- Modified the contents of Appendix A, Appendix B, Appendix C, and Appendix D. The previous releases of this regulation are. --- JJG 875-2005; --- JJG 875-1994. Verification Regulation of Digital Pressure Gauge

1 Scope

This regulation is applicable to the measurement range not exceeding (-0.1 ~ 500) MPa, the measurement pressure includes positive pressure, negative pressure, differential The first verification, follow-up verification and in-use inspection of pressure and absolute pressure digital manometers.

2 Reference documents

This regulation refers to the following documents. JJF1008 Terms and Definitions of Pressure Measurement Terms For dated references, only the dated versions are applicable to this Regulation; for those without dates The latest version (including all amendments) is applicable to this regulation.

3 Terms and units of measurement

3.1 Terminology 3.1.1 Digital pressure gauge The measured pressure acts on the pressure sensor through the pressure transmission medium, which outputs the corresponding electrical signal or digital signal. The pressure gauge that directly displays the pressure value on the display after processing by the number processing unit. [JJF1008-2008, definition 6.1] 3.2 Unit of measurement The legal unit of measurement used by the digital pressure gauge is Pa (Pascal), or its decimal multiple unit. hPa, kPa, MPa and other measurement units.

4 Overview

Digital pressure gauge is mainly used for pressure measurement of gas and liquid. Working principle of digital pressure gauge. When the measured pressure acts on the pressure sensor through the pressure transmission medium, the pressure sensor The corresponding electrical signal or digital signal is processed by the signal processing unit and displayed on the display unit (not limited to the instrument itself, It can also be a computer equipped with special software) directly display the measured pressure value with numbers. The schematic diagram of the working principle of the digital pressure gauge is shown in Figure 1. Classification of digital pressure gauge. According to the structure, it can be divided into. integral type and separated type. According to the data reading method, it can be divided into. direct reading type and storage playback type. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 875-2019_English be delivered?

Answer: Upon your order, we will start to translate JJG 875-2019_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 JJG 875-2019_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 875-2019_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.

Question 5: Should I purchase the latest version JJG 875-2019?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 875-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.