GB/T 9081-2023 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 9081-2023 | English | 635 |
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Fuel dispensers for motor vehicles
| Valid |
| GB/T 9081-2008 | English | 150 |
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Fuel dispensers for motor vehicles
| Obsolete |
| GB/T 9081-2001 | English | 719 |
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Fuel dispensers for motor vehicles
| Obsolete |
| GB/T 9081-1998 | English | 679 |
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5 days
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Fuel dispensers for motor vehicles
| Obsolete |
| GB/T 9081-1988 | English | RFQ |
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3 days
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Dispensing gasoline pumps, piston type, electric
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 9081-2023
GB/T 9081-2023: Fuel dispensers for motor vehicles---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/GBT9081-2023
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
5 Component requirements... 22
6 Test methods... 27
7 Inspection rules... 33
8 Sign, seal, accompanying documents... 37
9 Packaging, transportation, storage... 38
Appendix A (Normative) Electronic system security testing... 40
Appendix B (Normative) Air-liquid ratio performance test... 44
Appendix C (Informative) Test record format... 46
References... 54
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"
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Fuel dispenser
A liquid volume measuring system used to refuel vehicles, which may have
additional devices and ancillary devices.
3.2
Flow measurement transducer
A component that converts the measured continuous flow of liquid fuel into
mechanical rotation and transmits it to the coding device.
3.3
Coding device
A component that converts the mechanical rotation of the flow measurement
transducer into a digital signal and transmits it to the measurement controlling board.
3.4
Measurement controlling board
A component, which receives the digital signal transmitted by the coding device,
generates refueling data according to the legal measurement control requirements,
transmits it to the indicating device for display through the monitoring
microprocessor. It has data communication, processing, storage, control and other
related functions.
3.5
Indicating device
A component that can continuously display refueling data.
3.6
Security checking device
A device used to ensure the correct generation, complete recording, reliable storage,
safe transmission of refueling data, etc., and to verify key electronic components of
the fuel dispenser.
4 Requirements for the whole machine
4.1 Structure and appearance
The structure and appearance of the fuel dispenser shall meet the following
requirements.
4.2 Explosion-proof performance
The explosion-proof structure and performance of the complete fuel dispenser shall
comply with the requirements of GB/T 3836.1, GB/T 3836.2, GB/T 3836.3, GB/T
3836.4, GB/T 3836.9, GB/T 3836.15, GB/T 3836.28, GB/T 3836.29, GB/T 22380.1,
GB/T 22380.2 (when equipped with pull-off valve), GB 50058, GB 50156; it shall also
obtain the explosion-proof certificate and inspection report.
4.3 Metrology performance
4.3.1 Flow range
The ratio of the maximum flow rate Qmax and the minimum flow rate Qmin marked on
the nameplate of the fuel dispenser shall not be less than 10.1.
4.3.2 Minimum measured quantity
The minimum measurand quantity shall meet the following requirements.
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.
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
4.4 Electronic system security
4.4.1 General requirements
4.4.2 Self-locking function
4.4.2.1 The fuel dispenser shall be able to activate the self-locking function through
special equipment.
4.4.2.2 When the authentication between the monitoring microprocessor, coding device,
and indicating device fails or the operation is abnormal, the dispenser can be
automatically locked.
4.4.2.3 When the monitoring microprocessor and security checking device fail in
validation, the fuel dispenser can be automatically locked.
4.4.3 Validation function
4.4.3.1 The key electronic components of the fuel dispenser shall have the function of
being registered in the online validation system.
4.4.3.2 The complete fuel dispenser shall have the function of registering in the online
validation system and starting calibration.
4.5 Air-liquid ratio performance
4.5.1 When the refueling volume is not less than 15 L, the air-liquid ratio of vapor
recovery shall meet the requirements of 5.3 in GB 20952-2020.
4.5.2 The vapor recovery system should have an air-liquid ratio detection function, to
realize closed-loop control and automatically adjust the air-liquid ratio, to meet the
requirements of 5.3 in GB 20952-2020.
4.6 Climate and environmental adaptability
Under the following environmental conditions, the fuel dispenser shall perform
normally and meet the requirements of 4.3.4.
4.7 Power supply adaptability
The fuel dispenser shall perform normally in a power supply environment, which has a
nominal voltage (allowed fluctuation range is -15% ~ +10%) and maximum frequency
variation of ±1 Hz (except DC power supply), meanwhile meet the requirements of
4.3.4.
4.8 Electrical safety
4.9 Adaptability to electromagnetic environment
4.9.1 General requirements
The entire fuel dispenser shall be tested for electrostatic discharge immunity, radio
frequency electromagnetic field radiation immunity, electrical fast transient pulse group
immunity, voltage sag, short interruption and voltage change immunity, surge (shock)
immunity test. During the above test process and after the test is completed, the function
of the fuel dispenser shall be normal; the following phenomena shall not occur.
4.9.2 Electrostatic discharge immunity
The electrostatic discharge immunity's severity level shall reach the Level 3 test level
specified in GB/T 17626.2-2018.
5 Component requirements
5.1 Flow measurement transducer
5.1.1 The appearance shall be subject to good surface treatment; it shall be free of
visible burrs, scratches, cracks, rust or mildew and other defects.
5.1.2 A flow direction mark shall be marked on an obvious part of the shell.
5.1.6 No leakage when withstanding oil pressure 1.5 times the pump outlet pressure.
5.1.7 A mechanical adjustment device can be equipped to adjust the flow meter so that
the indication error is close to zero. The adjustment device and the shell shall have a
reliable sealing mechanism, to prevent components from being adjusted or replaced at
will.
5.1.8 For discontinuous manual adjustment devices, the adjustment range of the
indication error shall be ≤ 0.05%/grid.
5.2 Coding device
5.2.1 The coding device shall use a special customized chip; the sensor and
microprocessor shall be integrated and packaged together. It shall have a unique serial
number and cannot be changed; the output signal shall be an encrypted digital signal
and shall not be output in plain text or pulse output. The encryption algorithm shall
meet the requirements of 4.4.1.6.
5.3.4 The monitoring microprocessor shall use a special customized chip. The storage
unit, real-time clock, monitoring microprocessor shall be integrated and packaged
together, have a unique serial number, have hardware encryption and decryption
functions.
5.3.5 The storage unit of the monitoring microprocessor shall store relevant data for at
least 7 years.
5.4 Indicating devices
5.4.1 The indicating device shall use a special customized encrypted display chip with
a unique serial number that cannot be changed.
5.5 Security checking device
5.5.1 The security checking device shall have a unique serial number which cannot be
changed.
5.5.2 The security checking device shall have an automatic time calibration function
and synchronize the time to the monitoring microprocessor.
5.6 Pump (excluding submersible pump)
5.6.1 The flow range shall meet the requirements of 4.3.1.
5.6.2 The absolute value of vacuum at the pump inlet shall be ≥ 54 kPa; the outlet
pressure shall be ≤ 300 kPa.
5.6.3 There will be no leakage when withstanding a pressure 1.5 times the pump outlet
pressure.
5.8 Oil hose
6 Test methods
6.1 Test conditions
6.1.1 General
The fuel dispenser shall undergo various tests after the components are assembled. See
Appendix C for the test record format.
6.1.2 Ambient temperature
The ambient temperature shall be within -25 °C ~ +55 °C. The temperature change
during the test shall not exceed 5 °C. It shall be measured near the oil dispenser and
standard metal measuring instrument.
6.3 Explosion-proof performance inspection
The explosion-proof performance inspection of the fuel dispenser shall be carried out
in accordance with the following requirements.
6.4 Running performance test
The running performance test shall be carried out according to the following provisions.
6.5 Metering performance test
6.5.3 Minimum measurand quantity test
The test shall be carried out in accordance with the provisions of the indication error
test for minimum measured quantity in JJF 1521.
6.5.4 Flow interruption indication error test
The test is carried out according to the provisions of the flow interruption indication
error test in JJF 1521.
6.11 Electromagnetic environment adaptability test
6.11.1 Electrostatic discharge immunity test
Carry out the test, according to the provisions of electrostatic discharge immunity test
in JJF 1521.
6.11.2 Radio frequency electromagnetic field radiation immunity test
The test is carried out according to the provisions of radio frequency electromagnetic
field radiation immunity test in JJF 1521.
6.13 Noise detection
The entire fuel dispenser shall be inspected for noise. Proceed as follows.
6.14 Gas separation capability test
The test is carried out according to the provisions of gas separation test in JJF 1521.
6.15 Hoses inner volume change test
The test shall be carried out according to the provisions of the hose inner volume test
in JJF 1521.
7 Inspection rules
7.1 Inspection types
The inspection of the fuel dispenser is divided into type inspection and exit-factory
inspection.
7.2 Inspection items
The items of type inspection and exit-factory inspection of the fuel dispenser are carried
out according to Table 2.
7.3 Type inspection
The fuel dispenser and its main components shall undergo type inspection when any of
the following conditions apply.
7.4 Exit-factory inspection
7.4.1 Exit-factory inspection shall be carried out on a unit-by-unit basis.
7.4.2 Exit-factory products shall be accompanied by product certificates and
instructions for use, as well as certain accessories and wearing spare parts.
7.5 Determination rules
8 Sign, seal, accompanying documents
8.1 Sign
8.1.1 The nameplate of the fuel dispenser and each explosion-proof electrical
component shall be fixed in a conspicuous position; the writing on the nameplate shall
be clear and unmistakable.
8.1.2 The following content shall be indicated on the nameplate of the fuel dispenser.
8.1.3 The contents and markings on the nameplate of explosion-proof electrical
equipment shall comply with the provisions of GB/T 3836.1.
8.2 Seal
Fuel dispensers that have passed the exit-factory inspection shall be sealed at the
following locations.
8.3 Accompanying documents
A fuel dispenser that has passed the exit-factory inspection shall be accompanied by
instructions, packing list, certificate of conformity and other accompanying documents.
Electronic instructions are available.
9 Packaging, transportation, storage
9.1 Packaging
9.1.1 The packaging of the fuel dispenser shall be rainproof; damage to the fuel
dispenser shall be avoided during transportation, in accordance with national railway
and road transportation provisions.
During transport and lifting, the inclination of the packaging box shall not exceed 30°.
9.3 Storage
Packaged or unpackaged fuel dispensers shall be placed in a dry, ventilated, covered
place. The storage location of the dispenser shall be free of harmful gases that corrode
metal.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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