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JJF 1628-2017 English PDF

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JJF 1628-2017: Calibration Specification for Testing Machines of Resistance to Internal Pressure of Plastics Pipe
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1628-2017	English	349	Add to Cart	3 days [Need to translate]	Calibration Specification for Testing Machines of Resistance to Internal Pressure of Plastics Pipe	Valid	JJF 1628-2017

PDF similar to JJF 1628-2017

Standard similar to JJF 1628-2017

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Basic data

Standard ID	JJF 1628-2017 (JJF1628-2017)
Description (Translated English)	Calibration Specification for Testing Machines of Resistance to Internal Pressure of Plastics Pipe
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Word Count Estimation	15,199
Date of Issue	2017-09-26
Date of Implementation	2017-12-26
Regulation (derived from)	General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1628-2017: Calibration Specification for Testing Machines of Resistance to Internal Pressure of Plastics Pipe

---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.
(Standard Specification for Calibration of Pressure Testing Machines for Plastic Tubes) People's Republic of China National Measurement Specifications Plastic pipe pressure testing machine calibration specifications CalibrationSpecification forTestingMachines ofResistance toInternalPressureofPlasticsPipe 2017-09-26 Posted 2017-12-26 Implementation General Administration of Quality Supervision, Inspection and Quarantine released Plastic pipe pressure testing machine calibration specifications CalibrationSpecification forTestingMachines ofResistance toInternalPressureofPlasticsPipe The focal point. National pressure measurement technical committee Drafting unit. Measurement Supervision and Inspection Institute of Hebei Province Tianjin Institute of Measurement Supervision and Inspection Shijiazhuang Development Zone in the real test Equipment Co., Ltd. This specification entrusts the national pressure measurement technical committee to explain Drafters of this Code. Wang Yanwei (Hebei Province Metrology Supervision and Inspection Institute) Dai Yanmei (Measurement and Supervision Institute of Hebei Province) Cai Yan (Hebei Province Metrology Supervision and Inspection Institute) Guo Zhiming (Tianjin Institute of Metrology, Supervision and Inspection) Qi Lihui (Shijiazhuang Development Zone in real detection equipment Co., Ltd.)

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Measurement Characteristics (1) 4.1 system sealing (1) 4.2 indication error (1) 4.3 Set point control error (1) 4.4 Insulation resistance (2) 5 calibration conditions (2) 5.1 Environmental conditions (2) 5.2 Calibration equipment (2) 6 Calibration Items and Calibration Methods (2) 6.1 Appearance (2) 6.2 Functional check (2) 6.3 system sealing (2) 6.4 indication error (2) 6.5 Setpoint control error (3) 6.6 Insulation resistance (3) 7 expression of calibration results (3) 8 correction interval (3) Appendix A plastic pipe pressure (blasting) test machine calibration records (4) Appendix B Calibration Certificate Contents and Internal Page Format (6) Appendix C Plastic pipe pressure testing machine indication error measurement uncertainty evaluation (7)

Introduction

JJF 1071-2010 "Rules for the Preparation of National Metrology Calibration Standards", JJF 1001-2011 "General Measurement Terms and Definition ", JJF 1008-2008" Pressure measurement terms and definitions ", JJF 1059.1-2012" Measurement uncertainty Degree Evaluation and Expression ", JJF 1094-2002" Measurement Instrument Characterization ", together constitute the support calibration standard-setter For the basic series of norms. Reference to the code reference JJG875-2005 "digital pressure gauge" part of the content, with reference to GB/T 6111- 2003 "Thermoplastics pipes for fluid transport resistance to internal pressure test methods", GB/T 15560-1995 "Fluid transport Plastic pipe hydraulic instantaneous burst and pressure test method "in the blasting and hydrostatic strength test section. Plastic pipe pressure testing machine calibration specifications

1 Scope

This standard applies to the measurement limit of 25MPa plastic pipe pressure test machine (hereinafter referred to as testing machine) calibration. This code only for plastic pipe pressure testing machine requirements, equipment requirements incubator is not this standard Wai inside. Plastic pipe burst test machine and plastic pipe pressure burst test machine can refer to the specification calibration.

2 reference documents

This specification cites the following documents. Common measurement terms and definitions Evaluation and Expression of Uncertainty in Measurement JJF 1094-2002 Measurement instrument characterization Thermoplastics pipes for the conveyance of fluids - Resistance to internal pressure - Test method GB/T 15560-1995 Fluid conveying plastic pipe hydraulic instantaneous burst and pressure test method For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Overview

Plastic pipe pressure test machine is to give different types of plastic pipe under a certain temperature to withstand internal pressure conditions To assess the plastic pipe special equipment. Plastic pipe pressure testing machine generally by the pressure system, control system, measurement system System, timing system. The testing machine is pressurized by a pressurizing device and controlled by a solenoid valve so that the output pressure reaches the set pressure value, Measurement of pressure and set the pressure value of the deviation, feedback to the control system, the pressure adjustment, so that the output pressure is stable set. According to the needs of work, the pressure output port can be one or more, but more than one output port can be independently pressurized, Control, do not affect each other. The working medium is generally clean water.

4 measurement characteristics

4.1 system sealing The output of each channel at its maximum nominal pressure Dies 10min, 5min after the pressure drop should not be large At 2%. 4.2 indication error The maximum permissible error of the test machine indication is ± 0.5% of the upper limit of the measurement. 4.3 Setpoint control error Test machine pressure in the working state of the set point control error should not exceed the set value of -1% to 2%.

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