GB/T 9081-2023 English PDF (GBT9081-2023)

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GB/T 9081-2023: Fuel dispensers for motor vehicles
GB/T 9081-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.180.30
CCS N 13
Replacing GB/T 9081-2008
Fuel dispensers for motor vehicles
ISSUED ON: NOVEMBER 27, 2023
IMPLEMENTED ON: JUNE 01, 2024
Issued by: State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword ... 4
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 9
4 Requirements for the whole machine ... 14
4.1 Structure and appearance ... 14
4.2 Explosion-proof performance ... 15
4.3 Metrology performance ... 15
4.4 Electronic system security ... 17
4.5 Air-liquid ratio performance ... 18
4.6 Climate and environmental adaptability ... 19
4.7 Power supply adaptability ... 19
4.8 Electrical safety ... 19
4.9 Adaptability to electromagnetic environment... 20
4.10 Power-down protection and re-display value time ... 21
4.11 Noise ... 21
4.12 Data communication interface ... 21
4.13 Operating performance ... 21
5 Component requirements ... 22
5.1 Flow measurement transducer ... 22
5.2 Coding device ... 23
5.3 Measurement controlling board ... 23
5.4 Indicating devices ... 23
5.5 Security checking device ... 24
5.6 Pump (excluding submersible pump) ... 25
5.7 Control valve ... 25
5.8 Oil hose ... 25
5.9 Pull-off valve ... 26
5.10 Nozzle ... 26
5.11 Refueling vapor recovery system ... 26
6 Test methods ... 27
6.1 Test conditions ... 27
6.2 Structural and appearance inspection ... 28
6.3 Explosion-proof performance inspection ... 28
6.4 Running performance test ... 28
6.5 Metering performance test ... 29
6.6 Electronic system safety test ... 30
6.7 Air-liquid ratio performance test ... 30
6.8 Climate environment adaptability test ... 30
6.9 Power supply adaptability test ... 31
6.10 Electrical safety test ... 31
6.11 Electromagnetic environment adaptability test ... 31
6.12 Power-down protection and re-display time test ... 32
6.13 Noise detection ... 32
6.14 Gas separation capability test ... 33
6.15 Hoses inner volume change test ... 33
7 Inspection rules ... 33
7.1 Inspection types ... 33
7.2 Inspection items ... 33
7.3 Type inspection ... 36
7.4 Exit-factory inspection ... 36
7.5 Determination rules ... 36
8 Sign, seal, accompanying documents ... 37
8.1 Sign ... 37
8.2 Seal ... 37
8.3 Accompanying documents ... 38
9 Packaging, transportation, storage ... 38
9.1 Packaging ... 38
9.2 Transport ... 38
9.3 Storage ... 39
Appendix A (Normative) Electronic system security testing ... 40
A.1 General requirements inspection ... 40
A.2 Self-locking function test ... 40
A.3 Test of validation function ... 41
Appendix B (Normative) Air-liquid ratio performance test ... 44
B.1 Test equipment ... 44
B.2 Test procedures ... 44
Appendix C (Informative) Test record format ... 46
C.1 Format of inspection item record ... 46
C.2 Record format of electronic system safety test ... 48
C.3 Record format of air-liquid ratio performance test ... 51
C.4 Record format of noise detection test ... 52
References ... 54
Fuel dispensers for motor vehicles
1 Scope
This document specifies the technical requirements, inspection items and methods,
inspection rules, requirements for marking, sealing, packaging, transportation and
storage of fuel dispensers for motor vehicle (hereinafter referred to as dispensers).
This document applies to the design, manufacturing, and acceptance of fuel dispensers.
This document applies to gas dispensers used in fixed gas stations and gas stations with
skid-mounted car refueling devices. Please refer to this document for gas dispensers
used in mobile refueling trucks.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated reference
documents, only the edition corresponding to the date applies to this document; for
undated reference documents, the latest edition (including all amendments) applies to
this document.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 3836.1 Explosive atmospheres - Part 1: Equipment - General requirements
GB/T 3836.2 Explosive atmospheres - Part 2: Equipment protection by flameproof
enclosures "d"
GB/T 3836.3 Explosive atmospheres - Part 3: Equipment protection by increased
safety "e"
GB/T 3836.4 Explosive atmospheres - Part 4: Equipment protection by intrinsic
safety "i"
GB/T 3836.9 Explosive atmospheres Part 9: Equipment protected by casting type
"m"
GB/T 3836.15 Explosive atmospheres - Part 15: Electrical installations design,
selection and erection
GB/T 3836.28 Explosive atmospheres - Part 28: Non-electrical equipment for
explosive atmospheres - Basic method and requirements
4.3.3 Minimum specified volume quantity
The minimum specified volume quantity of the fuel dispenser shall be ≤ 0.01 L.
4.3.4 Maximum permissible error
The maximum permissible error of the fuel dispenser shall meet the following
requirements.
- When Qmax ≤ 200 L/min, the maximum permissible error of the volume indication
error of the fuel dispenser is ±0.30%; its repeatability is ≤ 0.10%.
- When Qmax > 200 L/min, the maximum permissible error of the volume indication
error of the fuel dispenser is ±0.50%; its repeatability is ≤ 0.17%.
- The maximum permissible error of the minimum measured quantity is ±0.50%; its
repeatability is ≤ 0.17%.
4.3.5 Payment amount error
The payment amount displayed by the fuel dispenser shall not be greater than the
payment amount, which is calculated by multiplying the unit price and the volume
indication value; the absolute value of the difference between the two shall not exceed
the minimum specified price deviation.
4.3.6 Flow interruption indication error
If the oil circuit is suddenly closed during the refueling process, the volume indication
error and payment amount indication error shall meet the requirements of 4.3.4 and
4.3.5, respectively.
4.3.7 Counting indication range
The range of counting indications shall meet the requirements of measurement accuracy.
The requirements for the indication range are as follows:
- The payment amount and transaction volume shall be no less than 6 significant
figures, including 2 digits after the decimal point and no less than 4 digits before
the decimal point;
- The unit price must be no less than 4 significant figures, including 2 digits after the
decimal point and no less than 2 digits before the decimal point;
- The electronic cumulative amount shall not be less than 10 significant figures.
4.3.8 Measuring endurance
After the fuel dispenser operates for 100 hours at 80% to 100% of the maximum flow
rate as shown on the nameplate, the average value of the indication error and
measurement repeatability of each measurement point shall meet the requirements of
4.3.4. Compared with the indication error before 100 hours of operation, at the same
flow point, the absolute value of the indication error change shall be ≤ 0.30%.
4.4 Electronic system security
4.4.1 General requirements
4.4.1.1 There shall be no circuit on the measurement controlling board, that can
disconnect or attach the communication channel between the monitoring
microprocessor and the security checking device.
4.4.1.2 There shall be no circuit on the measurement controlling boa...