JJF 1800-2020 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| JJF 1800-2020 | English | 410 |
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Calibration specification of aerosol photometers
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JJF 1800-2020: Calibration specification of aerosol photometers---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JJF1800-2020
JJF
METROLOGY SPECIFICATION OF THE
PEOPLE’S REPUBLIC OF CHINA
Calibration Specification for Aerosol Photometers
Issued on. JANUARY 17, 2020
Implemented on. APRIL 17, 2020
Issued by. State Administration for Market Regulation
Administrative organization.
National Technical Committee on Environmental Stoichiometry
Main drafting organizations.
Shanghai Institute of Metrology and Testing Technology
Qingdao Metrology Technology Research Institute
China Institute of Metrology
Participating drafting organizations.
Shanghai Environmental Protection Product Quality Supervision and Inspection
Station
Shenyang Jiaye Scientific Instrument Co., Ltd.
Suzhou Huayu Purification Equipment Co., Ltd.
This specification is entrusted to the National Environmental Chemical Metrology
Technical Committee to be responsible for the interpretation.
Calibration Specification for Aerosol
Photometers
Main drafters of this Specification.
Zhang Ailiang (from Shanghai Institute of Metrology and Testing Technology)
Xia Chun (from Qingdao Metrology Technology Research Institute)
Liu Yue (from Shanghai Institute of Metrology and Testing Technology)
Liu Junjie (from China Institute of Metrology)
Participating drafters.
Shi Chanzhen (from Shanghai Environmental Protection Product Quality
Supervision and Inspection Station)
Li Hefeng (from Shenyang Jiaye Scientific Instrument Co., Ltd.)
Gao Zheng (from Suzhou Huayu Purification Equipment Co., Ltd.)
Table of Contents
Introduction... 5
1 Scope... 6
2 Terms... 6
3 Overview... 6
4 Metrology characteristics... 7
5 Calibration conditions... 7
5.1 Environmental conditions... 7
5.2 Metrology standard instruments... 8
6 Calibration items and calibration methods... 8
6.1 Preparation before calibration... 8
6.2 Calibration items... 8
7 Calibration result expression... 12
7.1 Calibration record... 12
7.2 Processing of calibration results... 12
8 Recalibration time interval... 13
Annex A Calibration method for concentration indication error of precision aerosol
photometer... 14
Annex B Examples for measurement uncertainty evaluation of mass concentration
indication error of precision aerosol photometer... 18
Annex C Examples for uncertainty evaluation of indication error of mass concentration
of aerosol photometer... 25
Annex D Raw recording format for aerosol photometer calibration (reference)... 31
Annex E Aerosol photometer calibration certificate (inner page) format (reference) 33
Introduction
This Specification is prepared based on JJF 1071-2010 "The rules for drafting national
calibration specification", JJF 1001-2011 "General Terms in Metrology and Their
Definitions" and JJF 1059.1-2012 "Evaluation and Expression of Uncertainty in
Measurement".
The technical indicators of this Specification refer to IEST-RP-CC013.3-2012
"Calibration procedures and guidelines for select equipment used in testing cleanrooms
and other controlled environments".
This Specification is issued for the first time.
Calibration Specification for Aerosol Photometers
1 Scope
This Specification applies to the calibration of light scattering principle aerosol
photometers with a measurement range of (0.01~100) μg/L. The aerosol photometers
with other measuring ranges can be calibrated with reference to this Specification.
2 Terms
PAO-4 aerosol
Aerosol refers to a colloidal dispersion system formed by solid or liquid small particles
dispersed and suspended in a gas medium. It is also called as gas dispersion system. Its
dispersion phase is solid, liquid or solid-liquid mixture. PAO-4 aerosol in this
Specification refers to polydisperse aerosol, which takes poly-alpha-olefin oil (PAO)
with a kinematic viscosity of 4m2/s as the generating medium and is generated by the
fog mixing device of the aerosol photometer.
3 Overview
Aerosol photometer (hereinafter referred to as the instrument) is an instrument used to
measure the leakage rate of high-efficiency filters and the leakage rate of high-
efficiency filtration systems installed with high-efficiency filters.
4 Metrology characteristics
4.1 Sampling flow indication error. no more than ±5%.
4.2 Sampling flow repeatability. not more than 2%.
4.3 Sampling flow stability. sampling flow is not more than 5% within 1h.
5 Calibration conditions
5.1 Environmental conditions
5.1.1 Temperature. (15~30)℃. Relative humidity. ≤85%.
5.2 Metrology standard instruments
5.2.1 Precision aerosol photometer. the maximum allowable error of mass
concentration does not exceed ±10%;
5.2.2 Flow standard device. the measurement range is (0~50)L/min; the maximum
allowable error does not exceed ±1.0%.
6 Calibration items and calibration methods
6.1 Preparation before calibration
Connect the calibrated instrument, precision aerosol photometer and aerosol fog mixing
device as required. According to the use requirements of each equipment, the normal
operation of preheating shall not be less than 10min.
6.2 Calibration items
6.2.2 Flow repeatability
According to the connection method in 6.2.1, read the standard flow value after the
instrument is stable. Repeat the measurement 6 times. Calculate the sampling flow
repeatability according to formula (2).
7 Calibration result expression
7.1 Calibration record
Refer to Annex D for the calibration record format.
7.2 Processing of calibration results
Calibration results shall be reflected on the calibration certificate or calibration report.
The calibration certificate or report includes at least the following information.
8 Recalibration time interval
The recalibration time interval of the instrument shall be determined by the user
according to the usage of the instrument, the performance of the instrument itself, and
so on.
JJF
METROLOGY SPECIFICATION OF THE
PEOPLE’S REPUBLIC OF CHINA
Calibration Specification for Aerosol Photometers
Issued on. JANUARY 17, 2020
Implemented on. APRIL 17, 2020
Issued by. State Administration for Market Regulation
Administrative organization.
National Technical Committee on Environmental Stoichiometry
Main drafting organizations.
Shanghai Institute of Metrology and Testing Technology
Qingdao Metrology Technology Research Institute
China Institute of Metrology
Participating drafting organizations.
Shanghai Environmental Protection Product Quality Supervision and Inspection
Station
Shenyang Jiaye Scientific Instrument Co., Ltd.
Suzhou Huayu Purification Equipment Co., Ltd.
This specification is entrusted to the National Environmental Chemical Metrology
Technical Committee to be responsible for the interpretation.
Calibration Specification for Aerosol
Photometers
Main drafters of this Specification.
Zhang Ailiang (from Shanghai Institute of Metrology and Testing Technology)
Xia Chun (from Qingdao Metrology Technology Research Institute)
Liu Yue (from Shanghai Institute of Metrology and Testing Technology)
Liu Junjie (from China Institute of Metrology)
Participating drafters.
Shi Chanzhen (from Shanghai Environmental Protection Product Quality
Supervision and Inspection Station)
Li Hefeng (from Shenyang Jiaye Scientific Instrument Co., Ltd.)
Gao Zheng (from Suzhou Huayu Purification Equipment Co., Ltd.)
Table of Contents
Introduction... 5
1 Scope... 6
2 Terms... 6
3 Overview... 6
4 Metrology characteristics... 7
5 Calibration conditions... 7
5.1 Environmental conditions... 7
5.2 Metrology standard instruments... 8
6 Calibration items and calibration methods... 8
6.1 Preparation before calibration... 8
6.2 Calibration items... 8
7 Calibration result expression... 12
7.1 Calibration record... 12
7.2 Processing of calibration results... 12
8 Recalibration time interval... 13
Annex A Calibration method for concentration indication error of precision aerosol
photometer... 14
Annex B Examples for measurement uncertainty evaluation of mass concentration
indication error of precision aerosol photometer... 18
Annex C Examples for uncertainty evaluation of indication error of mass concentration
of aerosol photometer... 25
Annex D Raw recording format for aerosol photometer calibration (reference)... 31
Annex E Aerosol photometer calibration certificate (inner page) format (reference) 33
Introduction
This Specification is prepared based on JJF 1071-2010 "The rules for drafting national
calibration specification", JJF 1001-2011 "General Terms in Metrology and Their
Definitions" and JJF 1059.1-2012 "Evaluation and Expression of Uncertainty in
Measurement".
The technical indicators of this Specification refer to IEST-RP-CC013.3-2012
"Calibration procedures and guidelines for select equipment used in testing cleanrooms
and other controlled environments".
This Specification is issued for the first time.
Calibration Specification for Aerosol Photometers
1 Scope
This Specification applies to the calibration of light scattering principle aerosol
photometers with a measurement range of (0.01~100) μg/L. The aerosol photometers
with other measuring ranges can be calibrated with reference to this Specification.
2 Terms
PAO-4 aerosol
Aerosol refers to a colloidal dispersion system formed by solid or liquid small particles
dispersed and suspended in a gas medium. It is also called as gas dispersion system. Its
dispersion phase is solid, liquid or solid-liquid mixture. PAO-4 aerosol in this
Specification refers to polydisperse aerosol, which takes poly-alpha-olefin oil (PAO)
with a kinematic viscosity of 4m2/s as the generating medium and is generated by the
fog mixing device of the aerosol photometer.
3 Overview
Aerosol photometer (hereinafter referred to as the instrument) is an instrument used to
measure the leakage rate of high-efficiency filters and the leakage rate of high-
efficiency filtration systems installed with high-efficiency filters.
4 Metrology characteristics
4.1 Sampling flow indication error. no more than ±5%.
4.2 Sampling flow repeatability. not more than 2%.
4.3 Sampling flow stability. sampling flow is not more than 5% within 1h.
5 Calibration conditions
5.1 Environmental conditions
5.1.1 Temperature. (15~30)℃. Relative humidity. ≤85%.
5.2 Metrology standard instruments
5.2.1 Precision aerosol photometer. the maximum allowable error of mass
concentration does not exceed ±10%;
5.2.2 Flow standard device. the measurement range is (0~50)L/min; the maximum
allowable error does not exceed ±1.0%.
6 Calibration items and calibration methods
6.1 Preparation before calibration
Connect the calibrated instrument, precision aerosol photometer and aerosol fog mixing
device as required. According to the use requirements of each equipment, the normal
operation of preheating shall not be less than 10min.
6.2 Calibration items
6.2.2 Flow repeatability
According to the connection method in 6.2.1, read the standard flow value after the
instrument is stable. Repeat the measurement 6 times. Calculate the sampling flow
repeatability according to formula (2).
7 Calibration result expression
7.1 Calibration record
Refer to Annex D for the calibration record format.
7.2 Processing of calibration results
Calibration results shall be reflected on the calibration certificate or calibration report.
The calibration certificate or report includes at least the following information.
8 Recalibration time interval
The recalibration time interval of the instrument shall be determined by the user
according to the usage of the instrument, the performance of the instrument itself, and
so on.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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