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JJG 1040-2008: Verification Regulation of Digital Measuring Device for Optical Interference Methane Detector
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 1040-2008	English	309	Add to Cart	3 days [Need to translate]	Verification Regulation of Digital Measuring Device for Optical Interference Methane Detector
JJG 1040-1993	English	RFQ	ASK	3 days [Need to translate]	Technical Specification of Measurement Assurance pro gram for Radio Attenuation

JJG 1040-2008: Verification Regulation of Digital Measuring Device for Optical Interference Methane Detector

---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 Digital Measuring Device for Optical Interference Methane Detector State verification procedures People's Republic of China Digital optical interference methane measuring Calibrator Posted 2008-03-25 2008-06-25 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Digital optical interference methane Determination Calibrator Verification Regulation DeviceforOp The regulations by the State Administration of Quality Supervision, Inspection and Quarantine, 2008 March 25 ratification and From June 25, 2008 implementation. Focal point. the National Technical Committee of pressure measurement Drafting units. China Testing Technology Research Institute Liaoning Provincial Institute of Metrology Shaanxi Provincial Institute of Metrology Henan Institute of Metrology Shanxi measurement supervision and verification tests Participated in the drafting unit. Air pressure test too Taiyuan Technology Co., Ltd. National Mine Safety metering station sub-station in Urumqi Sichuan Aerospace Institute of Metrology The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure The main drafters of this procedure. Li Zubin (China Testing Technology Research Institute) Zhang Zijian (Liaoning Provincial Institute of Metrology) Wang Hongyan (Shaanxi Provincial Institute of Metrology) Xiao-full (Henan Institute of Metrology) Zhang Jinliang (Shanxi measurement supervision and verification tests) Drafters participate. Gan Rong (China Testing Technology Research Institute) Yan Jinping (Taiyuan Taihang Stress Test Technology Co., Ltd.) Dong Zhibin (National Mine Safety Urumqi metering station sub-station) Li Lin (Sichuan Aerospace Metrology Institute)

table of Contents

1 Scope (1) 2 Overview (1) 3 metering performance requirements (1) 3.1 indication error (1) 3.2 Return error (2) 3.3 Zero drift (2) Tightness 3.4 (2) 3.5 Temperature error (2) 4 General Requirements (2) 4.1 Appearance (2) 4.2 Insulation Resistance (2) 5 control of measuring instruments (2) 5.1 verification Conditions (2) 5.2 Verification Project (2) 5.3 Verification Methods (3) 5.4 test results processing (4) 5.5 test cycle (4) Appendix A Calibrator test recording format (5) Appendix B test certificate page format (6) Appendix C test results in the notice page format (7) Appendix D of methane concentration and pressure, the temperature corresponding to the calculated relation (8) Digital optical interference methane measuring Calibrator Verification Regulation

1 Scope

The order applies to the measurement range of the volume fraction of 0 ~ 10% CH4 and 0 ~ 100% CH4 digital optical interference Methane measuring Calibrator (hereinafter referred to as the Calibrator) initial verification, subsequent verification and in-service inspection.

2 Overview

Calibrator A block diagram shown in Figure 1, respectively, by a pressure sensor, a temperature sensor detects light interference A Alkyl measuring chamber measuring pressure and test the ambient temperature, the pressure is detected, the temperature is converted into an electrical signal. By letter Amplification processing unit, and the A/D conversion, and then calculated directly by a microprocessor corresponding to the pressure, body temperature Concentration of methane fraction represented and displayed on the monitor, enabling the optical interference of methane detector test. Block diagram of Figure 1 Calibrator work Calibrator can be divided into direct and non-direct reading reading type. a) Direct-reading type Calibrator principle is the collected pressure and temperature values calculated directly corresponding to the pressure, Methane concentration test point temperature value expressed in volume fraction, and displayed on the display. b) Non-Direct-reading type Calibrator principle is to only collect pressure, according to test ambient temperature, and then calculate Corresponding to the pressure, temperature test point concentration of methane by volume expressed as a fraction.

3 metering performance requirements

3.1 Indication error Calibrator to represent the volume fraction of the measurement range and the maximum permissible error in Table 1, the Calibrator to measure pressure expressed The scope and amount of the maximum permissible error in Table 2. Table 1 Calibrator to represent the volume fraction of the measurement range and the maximum permissible error Measurement range /% CH4 0 ~ 10 0 ~ 100 The maximum permissible error /% CH4 ± 0.016 ± 0.12 Table 2 indicates Calibrator pressure measurement range and the maximum permissible error With respect to the concentration of methane 0 ~ 10% CH4 0 ~ 100% CH4 Measurement range/kPa 0 ~ 8 0 ~ 60 The maximum permissible error/kPa ± 0.008 ± 0.06 ...