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JJG 544: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| JJG 544-2011 | English | 329 |
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Verification Regulation of Pressure Controllers
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| JJG 544-1997 | English | 479 |
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Verification Regulation of Pressure Contuoller
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Basic data
| Standard ID | JJG 544-2011 (JJG544-2011) |
| Description (Translated English) | Verification Regulation of Pressure Controllers |
| Sector / Industry | Metrology & Measurement Industry Standard |
| Classification of Chinese Standard | A53 |
| Classification of International Standard | 17.100 |
| Word Count Estimation | 14,117 |
| Date of Issue | 2011-12-28 |
| Date of Implementation | 2012-06-28 |
| Older Standard (superseded by this standard) | JJG 544-1997 |
| Regulation (derived from) | AQSIQ Announcement No. 205 of 2011 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine |
| Summary | This standard applies to pressure, vacuum and pressure vacuum passive controller (hereinafter referred to as controller) for initial verification, testing and use of follow-up checks. |
JJG 544-2011: Verification Regulation of Pressure Controllers
---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.
Verification Regulation of Pressure Controllers
State verification procedures People's Republic of China
pressure controller
Issued on. 2011-12-28
2012-06-28 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Pressure Controller test procedures
Replacing JJG 544-1997
The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on December 28, 2011, and from
From June 28, 2012 into effect.
Focal point. the National Technical Committee of pressure measurement
Drafting. Shanghai Institute of Measurement and Testing
Participated in the drafting unit. Shanghai Baohua Controls Co.
The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure
The main drafters of this procedure.
Huan Lun (Shanghai Institute of Measurement and Testing)
Tu Li Meng (Shanghai Institute of Measurement and Testing)
Drafters participate.
Ship Road (Shanghai Baohua Controls Co., Ltd)
table of Contents
1 Scope (1)
2 Overview (1)
3 Terms and Definitions (1)
4 metering performance requirements (2)
4.1 accuracy class (2)
4.2 control voltage range (2)
4.3 Setpoint deviation (2)
4.4 repeatability error (2)
4.5 switching difference (3)
4.6 Insulation resistance (3)
4.7 dielectric strength (3)
5 General technical requirements (3)
5.1 identification (3)
5.2 Appearance (3)
6 Control of measuring instruments (3)
6.1 Verification Project (3)
6.2 test conditions (4)
6.3 Verification Methods (4)
Processing 6.4 Verification Results (6)
6.5 test cycle (6)
Appendix A pressure controller test recording format (7)
Appendix B pressure controller test certificate-page format (8)
Appendix C pressure controller test results in the notice page format (9)
Pressure Controller test procedures
1 Scope
The order applies to pressure, vacuum and pressure in the vacuum passive controller (hereinafter referred to as the controller) initial verification,
Use and subsequent verification check.
2 Overview
Pressure controller for industrial process measurement and control system for controlling the pressure of a special instrument. Its working principle is
When the pressure reaches the set value input to control or alarm.
Pressure controller according to the type of pressure-sensing elements can be divided into diaphragm, bellows, bellows, spring and piston tube
Type, etc; whether by switching difference adjustable switching difference can be divided into adjustable and non-adjustable switching difference; according to the set point is adjustable to
Divided into adjustable set point and the set point is not adjustable.
3 Terms and Definitions
3.1 pressure controller pressureswitch
When the input pressure reaches the set value, the output contacts off the role the accused played a pressure control and alarm
The role of the instrument.
3.2 pressure control range range
The controller can control the pressure range.
3.3 Setpoint (value) setpoint
Enter the desired pressure generating control or alarm value.
3.4 switch value switchingvalue
When the digital control instrumentation stroke (or the next trip), the output change from one state to another state measured
input value.
Switching on the value of high-switchingvalue 3.5
When the input pressure rises, the controller generates pressure control or alarm signal upon changes.
3.6 under switch value low-switchingvalue
When you enter a pressure drop, the controller generates pressure control or alarm signal upon changes.
3.7 switching difference differentialgap
Difference between the value and the lower value of the toggle switch on the same setpoint.
3.8 Setpoint deviation setpointerror
Output variable according to the requirements output, the difference between the set value and the measured actual value.
3.9 Setpoint (value) range setpointrange
Adjustable set point controller, the setpoint can be adjusted for the difference between the maximum pressure and the minimum pressure value.
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