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JJF 1172-2007 English PDF

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JJF 1172-2007: Calibration Specification for Volatile Organic Compounds Photo Ionization Detectors
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1172-2007	English	369	Add to Cart	3 days [Need to translate]	Calibration Specification for Volatile Organic Compounds Photo Ionization Detectors	Valid	JJF 1172-2007

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Basic data

Standard ID	JJF 1172-2007 (JJF1172-2007)
Description (Translated English)	Calibration Specification for Volatile Organic Compounds Photo Ionization Detectors
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A60
Classification of International Standard	07.180.01
Word Count Estimation	14,146
Date of Issue	2007-02-28
Date of Implementation	2007-05-28
Quoted Standard	AQSIQ Announcement No. 41 of 2007
Regulation (derived from)	AQSIQ Announcement No. 41 of 2007
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to monitoring air concentrations of volatile organic compounds VOCs photoionization detector calibration.

JJF 1172-2007: Calibration Specification for Volatile Organic Compounds Photo Ionization Detectors

---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.
Calibration Specification for Volatile Organic Compounds Photo Ionization Detectors People's Republic of China National Metrology Technical Specifications Volatile Organic Compounds Photoionization detector calibration specification Posted 2007-02-28 2007-05-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released VOC photoionization Detector Calibration Specification Comp This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on February 28, 2007, and from From May 28, 2007 into effect. Focal point. the National Technical Committee on Environment stoichiometry Drafting. Shanghai Institute of Measurement and Testing This specification technical committee commissioned by the National stoichiometric environment responsible for interpreting Drafters of this specification. Cai Jianhua (Shanghai Institute of Measurement and Testing) Zhengchun Rong (Shanghai Institute of Measurement and Testing)

1 Scope (1) 2 Overview (1) 3 Metrological characteristics (1) 3.1 Measurement range (1) 3.2 indication error (1) 3.3 Repeatability (1) 3.4 Response Time (1) 3.5 Drift (1) 4 calibration conditions (1) 4.1 Environmental conditions (1) 4.2 standards and other equipment (2) 5 calibration items and calibration methods (2) 5.1 Adjustment of the instrument (2) 5.2 Indication error (2) 5.3 Repeatability (3) 5.4 Response Time (3) 5.5 Drift (3) 6 calibration expression (3) 7 Recalibration interval (4) Appendix A VOC photoionization detector calibration records (5) Appendix B calibration certificate or calibration report calibration results content (6) Appendix C calibration uncertainty assessment (7) VOC photoionization detector calibration specification

1 Scope

This specification is applicable to the detection of air (non-mine operating environment) VOC concentrations of volatile organic Compound photoionization detector calibration.

2 Overview

VOC photoionization detector (hereinafter referred to as the instrument) works. photoionization (PID) is the use of a 10.6eV (or 11.7eV) photon energy of the UV lamp as a light source, this high-energy UV radiation can make the air in almost all organic and inorganic ionization part, but still maintain the air basic ingredients N2, O2, CO2, H2O and CO, CH4 is not ionized (ionization potential of these substances is much higher than 10.6eV or 11.7eV), the test substance into the ionization chamber, by UV light exposure, the original stable molecular structure is ionized, producing Students positively charged ions and negatively charged electrons, under the influence of positive and negative electric field, weak current, a large current is detected formed Small, we can know the content of the substance in the air. Instruments mainly by the sampling system, photoionization section and display components. Unless know exactly what kind of gas is detected, the instrument detected concentration is generally displayed showing the detected all Total VOC content, expressed in VOC.

3 Metrological characteristics

3.1 Measuring range Mole fraction X (VOC). 0 ~ 2000 × 10-6. 3.2 Indication error Tolerance limit. ± 10% FS. 3.3 Repeatability The relative standard deviation should not exceed 3%. 3.4 Response Time Response time ≤20s. 3.5 Drift 3.5.1 Zero Drift Instrument zero drift should not exceed one half of the allowed error limits. 3.5.2 Span drift Instrument span drift should not exceed the tolerance limit of one-half. Note. Due to calibrate the instrument and not only the instrument for determining eligibility or not, so that the above requirements are for reference only.

4 calibration conditions

4.1 Environmental conditions 4.1.1 Ambient temperature. (0 ~ 40) ℃.

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