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JJG 2071-2013: Verification scheme of Measuring Instruments for Pressure Range (-2.5~2.5) kPa
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 2071-2013	English	239	Add to Cart	3 days [Need to translate]	Verification scheme of Measuring Instruments for Pressure Range (-2.5~2.5) kPa
JJG 2071-1990	English	239	Add to Cart	2 days [Need to translate]	Verification Scheme of Measuring Instruments for Pressure (-2. 5~2. 5kPa)

JJG 2071-2013: Verification scheme of Measuring Instruments for Pressure Range (-2.5~2.5) kPa

---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 scheme of Measuring Instruments for Pressure Range (-2.5 ~ 2.5) kPa People's Republic of China National Metrological Verification System tables (-2.5 ~ 2.5) kPa pressure measuring instruments MeasuringInstrumentsforPressureRange (-2.5 ~ 2.5) kPa Issued on. 2013-01-06 2013-07-06 implementation The State Administration of Quality Supervision, Inspection and Quarantine released (-2.5 ~ 2.5) kPa Pressure measuring instruments Verification System PressureRange (-2.5 ~ 2.5) kPa Replacing JJG 2071-1990 Focal point. the National Technical Committee of pressure measurement The main drafting units. China Institute of Metrology Participated in the drafting. Zhejiang Provincial Institute of Metrology China Testing Technology Research Institute Shanghai Measurement and Testing Technology Research Institute The Verification System commissioned the National Technical Committee of pressure measurement shall be interpreted The main drafters of the table. CRITICAL (China Institute of Metrology) Yue Jin (China Institute of Metrology) Drafters participate. Cai Fei (Zhejiang Institute of Metrology) Gan Rong (China Testing Technology Research Institute) Hung flat (Shanghai Institute of Measurement and Testing) Far more than Yang (China Institute of Metrology)

table of Contents

1 Scope (1) 2 baseline measurement (1) 3 measurement standards (1) 4 working measuring instruments (3) 5 (-2.5 ~ 2.5) kPa pressure measuring instruments Verification System block diagram (3) (-2.5 ~ 2.5) kPa pressure measuring instruments Verification System

1 Scope

The Verification System applies (-2.5 ~ 2.5) kPa pressure range of pressure measuring instruments of value transfer. this Verification System provides name within this pressure range baseline measurement instruments pressure measuring instruments, measuring range, with Transit, transfer method, reproduce the magnitude of uncertainty (or value transfer should be to achieve the best measurement capability) to Composition and working standards of measurement and measuring instruments of pressure measuring instruments name, range, use, transfer Party Method and the maximum permissible error; specifies the amount of pressure within the pressure range is transmitted to the State by reference standards of measurement Delivery methods and measuring instruments work pipeline.

2 baseline measurement

2.1 baseline measurement name. 2500Pa pressure reference devices. 2.2 Scope of the baseline measurement uncertainty and composition Pressure Range. (- 2.5 ~ 2.5) kPa. Uncertainty. 0.13Pa (k = 2). 2500Pa pressure reference device uses the principle of compensation, the use of displacement of the movable container to compensate for pressure changes Fixed container caused by changes in the level of zero. It mainly consists of a container system (including fixed container and movable container) Heated water tank, zero positioning system, the displacement measurement system. Its working medium is deionized water. 2.3 magnitude baseline measurement traceability and guarantee 2500Pa pressure reference device by measuring the density of the working medium, and the gravity field measurements Highly accurate measurement so as to reproduce the pressure of traceability to length, mass, time, three basic amount. By participating in international quality and related amounts Advisory Committee on Metrology (CCM) or the Asia-Pacific Metrology Key (APMP) organization than to ensure that the magnitude of the pressure of international pressure magnitude unity. 2.4 reference measurement value transfer 2500Pa pressure reference device direct comparison method to deliver first-class standard to compensate the decline of pressure meter, the maximum allowed Error of ± 0.3Pa to ± 0.5Pa liquid pressure gauge, the maximum permissible error of ± 0.25Pa live micro-pressure gas Plug gauge.

3 measurement standard

Micro pressure measurement standard equipment including first-class standard to compensate the decline of pressure meter and second standard to compensate the decline of pressure gauge, pressure liquid formula Gauge, micro-pressure gas piston gauge and digital pressure gauge and so on. First decline of 3.1 standard compensation pressure gauge measuring range (-2.5 ~ 2.5) kPa, when the pressure value in (-1.5 To 1.5) kPa within the range, the maximum permissible error of ± 0.4Pa; pressure values at (-2.5 ~ -1.5) And within kPa (1.5 ~ 2.5) kPa range (excluding -1.5kPa and 1.5kPa), the maximum permissible error ± 0.5Pa. First compensation standard micro-pressure meter traceable to 2500Pa pressure reference means; direct comparison with the traditional method of Delivery second-class standard compensation micro-manometer, the maximum permissible error of ± 1.0Pa ~ ± 1.3Pa liquid manometer, maximum ...