Some standard content:
GB/T9081—2001
This standard is based on GB/T9081—1998 "Motor Vehicle Fuel Dispenser", combined with JJF1060—1999 "Tax Control Fuel Dispenser Type Appraisal Outline" and the use of the original standard. In terms of technical content, it refers to the international recommendations OIMLR117 "Non-aqueous Liquid Measurement System" and OIMLR118 "Motor Vehicle Fuel Dispenser Type Approval Test Procedure", and has gradually aligned with international recommendations and is in line with my country's national conditions.
This standard retains the measurement accuracy of ±0.3% in GB/T9081-1998, which is higher than the 0.5% specified in the international recommendation OIMLR117; the ratio of the maximum flow rate Qmx and the minimum flow rate Qm of the dispenser is 10:1, which is consistent with the international recommendation OIMLR117; and the whole machine performance test, component test, etc. refer to the international recommendation OIMLR118. Compared with GB/T9081-1998 "Motor Vehicle Fuel Dispenser", this standard has made appropriate adjustments in content, adding definitions of rated flow and tax control functions, adding IC card reader and oil and gas recovery device to the auxiliary devices, and canceling the chapters on structure and principle, making it more conducive to the diversification of the development of fuel dispensers. The definition of oil gun is unified with JJG443-1998 "Fuel Dispenser Measurement Verification Regulations". The term "working life" is renamed "working stability" and an appropriate definition is given, which is consistent with the purpose of life test in JJG443. A technical requirement column is added to Table 1, Table 2 and Table 3 to make it echo with the test method items and make the test purpose clearer. The emergence of submersible pump dispensers in China has added another type of dispenser. This standard specifically mentions submersible pumps in the definition of pumps to facilitate the development of submersible pump dispensers.
This standard cancels the minimum measured value test in the factory inspection, and only conducts the minimum measured value test in the type test, which not only ensures the product quality but also facilitates the manufacturer's operation. The calculation formula of the minimum measured value is cancelled. According to the provisions of my country's mandatory requirement that fuel dispensers must have tax control functions and the requirements of JJF1060, this standard adds content related to the tax control function. For electronic fuel dispensers with tax control functions, functional requirements are proposed and test items are added. This standard replaces GB/T9081-1998 from the date of implementation. This standard is proposed by China Aerospace Science and Technology Corporation. This standard is under the jurisdiction of China Aerospace Standardization Institute. The drafting units of this standard are: Shenyang Xinyang Petroleum Equipment Manufacturing Company, Beijing Changkong Industrial Company, Information Center of the State Administration of Taxation, Beijing Changji Fueling Equipment Co., Ltd., Nanyang Explosion-proof Electrical Research Institute, Zhengzhou Zhengxing Machinery Co., Ltd., and Aerospace Standardization Institute. The main drafters of this standard are: Li Guifu, Li Kuan, Wang Hao, Gao Zhenzhong, Zhang Gang, Ji Peng, and Song Xiaohong. This standard was first issued in April 1988 and revised for the first time in July 1998. I
1 Scope
National Standard of the People's Republic of China
Fuel dispensers for motor vehicles
Fuel dispensers for motor vehiclesGB/T9081—2001
Replaces GB/T9081—1998
This standard specifies the technical requirements, test items and test methods, inspection rules, and requirements for marking, packaging, transportation and storage of fuel dispensers for motor vehicles.
This standard applies to the design, manufacture and acceptance of fuel dispensers for motor vehicles (hereinafter referred to as fuel dispensers). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191—1990 Pictorial marking for packaging, storage and transportation
GB/T3768-1996 Acoustics-Determination of sound power level of noise source by sound pressure method-Simplified method using envelope measurement surface above reflecting surface (eqvISO 3746:1995)
）Electrical apparatus for explosive gas atmospheres-Part 1: General requirements (eqvIEC60079-0:1998) GB3836.1—2000
GB3836.2—2000
Electrical apparatus for explosive gas atmospheres-Part 2: Flameproof type d" (eqvIEC60079-1:1990) GB 3836.3—2000
Electrical apparatus for explosive gas atmospheres Part 3: Increased safety type "e" (eqvIEC60079-7: 1990) GB3836.4—2000
Electrical apparatus for explosive gas atmospheres Part 4: Intrinsically safe type "i" (eqvIEC60079-11: 1999)
Explosion-proof electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m" GB3836.9—1990
GB3836.15——2000
Electrical apparatus for explosive gas atmospheres Part 15: Electrical installations in hazardous locations (except coal mines) (eqvIEC60079-14: 1996)
GB4943—1995 Information Technology Safety of equipment (including electrical service equipment) (idtIEC60950:1991) GB9969.1—1998 General principles for instruction manuals for industrial products GB10543—1989
Rubber hose for ground refueling and draining of aircraft GB50058—1992
JJG259—1989
JJG443—1998
JJF1060—1999
Design specification for electrical installations in explosive and fire hazardous environments Standard metal measuring instruments
Metrological verification procedures for fuel dispensers
Outline for finalization and appraisal of tax-controlled fuel dispensers
JTJ01—1997 Technical standards for highway engineering
3 Definitions
This standard adopts the following definitions.
3.1 Fuel dispensers for motor vehicles A measuring system used to add fuel to motor vehicles and measure it. It includes a liquid flow meter, additional devices and auxiliary devices. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on December 17, 2001 and implemented on August 1, 2002
GB/T9081-2001
3.2 Liquid flow meter for volumes of liquids An instrument used to continuously measure, accumulate and display the volume of liquid flowing through the measuring transducer under measurement conditions. It includes a measuring transducer, a counter and an indicating device.
3.3 Measurement transducer measurement transducer is a component of a liquid flow meter, and its function is to convert the flow of the measured liquid into a mechanical or electrical signal and transmit it to the counter. It includes a flow and volume transducer.
3.4 Counter calculator
is a component of the liquid flow meter. It counts according to the output signal of the measuring transducer and can also be stored in the register for use.
3.5 Indicating device indicating device
is a component of the liquid flow meter. It can continuously display the measurement results. 3.6 Ancillary devices ancillary devices are devices used to realize the special functions of the fuel dispenser, mainly including: a zero return device;
printing device;
a cumulative amount indicating device;
a payment amount indicating device;
a preset device;
a tax reporting interface;
-IC card reader,
-oil and gas recovery device, etc.
3.7 Zero return device zero setting device is a mechanism that makes the indicating device return to zero. It can be manual or automatic. 3.8 Pre-setting device: A device that can select the measured value as needed before measurement, and automatically stop the liquid flow when the selected measured value reaches the preset value. The preset value can be the volume of the measured liquid or the payment amount. 3.9 Adjustment device: An adjustment device is a mechanism used to adjust the indication error of the fuel dispenser to ensure that the indication error is within the maximum allowable error. 3.10 Additional devices: Additional devices are components or devices used to ensure correct measurement or simplify measurement operations. They mainly include: oil-gas separator, oil sight glass, oil gun, pump, filter, hose, solenoid valve, etc. 3.11 Oil-gas separator: A device used to continuously separate and eliminate gas from the measured liquid. 3.12 Gas indicator
A device mainly used to observe whether the gas station is completely filled with oil. 3.13 Nozzle
The settlement point for the gas station to dispense oil.
3.14 Pump
A device that provides pressure oil for the gas station. It can be a vane pump, gear pump or other pumps such as a submersible pump. 3.15 Nominal flow rate
The maximum flow rate that must be guaranteed according to regulations under the designed working conditions. 3.16 Primary indication
The indication (displayed, printed or stored value) that is subject to metrological management is the primary indication. 2
GB/T9081—2001
3.17 Maximum allowable error Maximum permissible error The maximum allowable error value, generally given in the form of relative error. 3.18 Minimum measured quantity Minimum measured quantity The minimum volume of the measured liquid that can be accepted according to metrological requirements. 3.19 Minimum specified volume deviation corresponds to the absolute value of the maximum allowable error of the minimum measured quantity. 3.20 Repeatability error The difference between the maximum error value and the minimum error value of the same quantity measured continuously under the same conditions. 3.21 Work stability
The change in the measurement accuracy of the tanker after the tanker has been running continuously at the maximum flow rate for a certain period of time. 3.22 Revenue function
The measuring transducer in the tanker should be able to correctly generate pulse signals, and the metering microprocessor transmits the metering data to the monitoring microprocessor truthfully, reliably and safely. The data is processed by the monitoring microprocessor and stored in the tax control memory and displayed at the same time. When the above functions cannot be completed, the tanker should be automatically locked, that is, it cannot refuel. 4 Product classification
The tanker is divided into the following two forms according to the display mode: a) Mechanical tanker - mechanical display tanker equipped with a mechanical counter; b) Electronic tanker - electronic display tanker equipped with an electronic counter. Electronic fuel dispensers are divided into:
Electronic fuel dispensers without tax control function;
Tax control fuel dispensers with tax control function (hereinafter referred to as tax control dispensers). 5 Technical requirements
5.1 Technical requirements for the whole machine
5.1.1 Measurement requirements
5.1.1.1 Flow range
The ratio of the maximum flow Qmx and the minimum flow Qm of the fuel dispenser shall not be less than 10:1. 5.1.1.2 Minimum measured quantity
For fuel dispensers with a rated flow of not more than 60L/min, the minimum measured quantity shall not be more than 5L. 5.1.1.3 Minimum volume variable
The minimum volume variable △Vmi of the fuel dispenser shall not be more than 0.02L. 5.1.1.4 Measurement accuracy
The maximum allowable error of the volume indication of the fuel dispenser shall not exceed ±0.3%, and the repeatability error of its measurement shall not exceed 0.15%. The maximum allowable error of the smallest measured value of the tanker is ±0.5%, and the repeatability error of the measurement shall not exceed 0.25%. 5.1.1.5 Flow interruption
When the hydraulic pressure of the tanker changes suddenly during the refueling process, the accuracy of its volume indication and payment amount indication shall not be affected. 5.1.2 Rated flow
The rated flow Q of the tanker shall be:
Q=5×n
Where: Q is the rated flow of the tanker, L/min; n is any positive integer.
5.1.3 Count indication range
The count indication shall meet the requirements of measurement accuracy. GB/T9081—2001
Single range: integer digits shall not be less than 3, decimal digits shall not be less than 2. Cumulative amount: integer digits shall not be less than 6, decimal digits shall not be less than 1. 5.1.4 Environmental conditions
The tanker can maintain normal operation under the following conditions. a) Temperature: -20℃～+40℃;
b) Relative humidity 30%～90%;
c) Explosion-proof electrical environment conditions shall comply with the relevant provisions of GB3836.1. 5.1.5 Pump inlet vacuum pressure and outlet pressure The pump inlet vacuum pressure shall not be less than 54kPa. The pump outlet pressure shall not be greater than 0.3MPa.
5.1.6 Noise
The noise of the tanker shall not be greater than 80dB (A sound level). 5.1.7 Working stability
After the tanker has been running continuously for 100h at the maximum flow rate, the change in measurement accuracy shall not be greater than 0.15%. 5.1.8 Explosion-proof performance
The design, manufacture and inspection of the electrical equipment of the fuel dispenser shall comply with the requirements of GB3836.1, GB3836.2, GB3836.3, GB3836.4, GB3836.9, GB3836.15 and GB50058, and shall obtain the explosion-proof certificate and test report of the whole machine issued by the national designated inspection unit.
5.1.9 Structure and appearance
a) The surface coating of the whole machine should be glossy and uniform, without defects such as peeling and cracking; chrome-plated parts and signs and other exposed parts shall not be stained with paint; the surface coating and plating shall not have obvious mechanical damage; b) The edges of the same-shaped joint surfaces between parts in the whole machine and the edges of the joint surfaces between doors, windows, side panels and top covers shall be neat and symmetrical, and there shall be no obvious misalignment. Exposed parts and decorative parts should not have defects such as damage, peeling, rust, etc.; c) The movement of each sliding and rotating part should be light, flexible, stable, and without obstruction; d) The connection of each joint surface of the hydraulic system and the inlet and outlet pipeline joints should be firm and reliable without leakage; e) Fasteners should be connected firmly without looseness. Connectors should have good contact. Connecting wires should be crimped or welded well; f) Components and devices that directly affect the accuracy of measurement should be reliably sealed, and no interface with the user should be retained. 5.1.10 Safety requirements
The electrical safety requirements of the fuel dispenser should comply with the relevant provisions in GB4943. a) The ground leakage current of the fuel dispenser shall comply with the provisions of 5.2 of GB4943-1995 and shall not exceed 3.5mA; b) The dielectric strength of the fuel dispenser shall comply with the provisions of 5.3 of GB4943-1995. An AC test voltage with an effective value of 1500V and a frequency of 50Hz or 60Hz shall be applied between the primary circuit and the body or between the primary circuit and the secondary circuit and maintained for 60s. During the test, the insulation should not be broken down;
c) The protective grounding terminal of the tanker should be corrosion-resistant and should comply with the provisions of 2.5.10 of GB4943-1995; d) The connection resistance between the protective grounding terminal or grounding contact of the tanker and the parts that need to be grounded should comply with the provisions of 2.5 of GB4943-1995 and should not exceed 0.1Q; e) The connection between the two ends of the oil delivery hose and the fuel gun and the oil sight glass should be reliable and have good conductivity. The oil delivery hose should have good static conductivity, and the static conductivity resistance should comply with the provisions of Table 5 of 4.6.1 of GB10543-1989. 5.1.11 Power supply adaptability
The tanker should be able to work normally in a power supply environment with a nominal voltage amplitude change of +10% to -15% and a frequency change of ±1Hz. 5.2 Technical requirements for components
5.2.1 Measuring transducer
GB/T90812001
a) The flow range, minimum measured quantity, minimum volume variable and other measurement requirements shall comply with the provisions of 5.1.1.1, 5.1.1.2 and 5.1.1.3 respectively;
b) The maximum allowable error of the volume indication of the measuring transducer is ±0.2%, and the repeatability error is 0.1%;c) It can withstand oil pressure 1.5 times the pump outlet pressure without leakage;d) When the measuring transducer is equipped with an adjustment device, the adjusted ratio shall be sealed. The seal or stamp shall not be damaged, and the ratio shall not be changed at will. For non-continuous manual adjustment devices, the difference between adjacent ratios shall not exceed 0.0005:e) When the measuring transducer works continuously for 100 hours, the change in its measurement accuracy shall not exceed 0.15%. 5.2.2 Mechanical counter
a) All rotating and moving parts should move flexibly and without stagnation, and the carry should be accurate and reliable; b) The accumulated result should remain unchanged during the zero return process; c) There should be no word collision on the character wheel when refueling is completed. 5.2.3 Indicator
a) The indication requirements should comply with the provisions of 5.1.3; b) The main indication reading of the indicating device should be correct, clear and easy to read; c) The indication scale interval should be given in 1X10, 2X10*legal measurement unit, where n is positive, negative or zero, and the unit symbol should be close to the indication;
d) The minimum scale value of the fuel dispenser count display shall not be greater than 0.02L; e) The specified minimum volume variation shall be equivalent to the value of 2mm on the ruler or one-fifth of the scale interval, whichever is greater; f) When there are two or more indicating devices displaying the same measured value, the difference between the volumes displayed by the two indicating devices shall not exceed one scale interval.
5.2.4 Zero return mechanism for indicating device
a) The indicating device must be equipped with a mechanism that can return the indication to zero; b) The zero return mechanism cannot change the measurement result given by the indicating device; c) The remaining indication after returning to zero shall not be greater than half of the specified minimum volume variation; d) During measurement, the indicating device cannot return to zero. 5.2.5 Oil-gas separator
a) The oil-gas separator should be able to ensure normal operation at the maximum flow rate and minimum pressure of the tanker; b) When the tanker is working, the ability of the oil-gas separator to discharge gas in the oil should ensure that the volume ratio of gas to oil is not less than the following values:
20% for oils with a viscosity not exceeding 1mPa·s and 10% for oils with a viscosity higher than 1mPa·s; c) It can withstand an oil pressure of 1.5 times the pump outlet pressure without leakage. 5.2.6 Pump (excluding submersible pumps)
a) The flow rate of the pump used on the tanker should meet the requirements of 5.1.2; b) The vacuum pressure at the oil inlet and the outlet pressure of the pump should meet the requirements of 5.1.5; c) The pump has no leakage when it withstands an oil pressure of 1.5 times the pump outlet pressure; d) The noise of the pump should not exceed the noise requirements of the tanker. 5.2.7 Oil delivery hose
a) The static conductivity of the oil delivery hose shall comply with the relevant provisions of GB10543; b) For a fuel dispenser equipped with a hose reel, the volume increase caused by the change from the unpressurized curled state to the pressurized non-curled state without any flow shall not exceed 2 times the specified minimum volume variable; c) For a fuel dispenser without a hose reel, the change in the hose internal volume shall not exceed the specified minimum volume variable. 5.2.8 Oil sight glass
GB/T9081—2001
a) The oil sight glass shall be installed downstream of the measuring transducer, and the glass of the observation window shall be transparent, clear and undamaged; b) It shall be able to withstand an oil pressure 1.5 times the pump outlet pressure without leakage. 5.2.9 Oil gun
a) The oil gun shall be flexible to operate, the seal shall be good, and there shall be no leakage under the working pressure of the fuel dispenser; b) The flow rate of the oil gun shall meet the flow rate requirements of the fuel dispenser. 5.3 Additional requirements for electronic fuel dispensers
5.3.1 Requirements for auxiliary devices
For fuel dispensers equipped with auxiliary devices such as payment amount indication device, preset device, printing device, etc., the auxiliary devices shall not affect the technical requirements specified in 5.1.
5.3.2 Environmental adaptability
In addition to being able to work normally under the environmental conditions specified in 5.1.4, electronic fuel dispensers shall also have the following environmental adaptability performance: 5.3.2.1 High temperature performance: 2 hours in an environment with a temperature of 55°C. 5.3.2.2 Low temperature performance: 2 hours in an environment with a temperature of -25°C. 5.3.2.3 Humidity and heat alternating performance: 24 hours in a humid and hot environment with a temperature of 25°C~55°C, a relative humidity of 95%, and temperature cyclic changes.
5.3.2.4 Electronic fuel dispensers shall be subject to the above three environmental tests, of which 5.3.2.1 and 5.3.2.2 shall be subject to actual liquid tests, and 5.3.2.3 may be subject to the test of electronic counter components. The fuel dispenser shall not become dangerous or unsafe due to the above tests, and shall be able to meet the following requirements:
a) The performance of the fuel dispenser is normal;
b) Data shall not be lost, the stored programs and stored contents shall not have any changes, the status shall not be changed, and the levels of all points on all interfaces shall not have abnormal changes;
c) Under the environments of 5.3.2.1 and 5.3.2.2, the deviation from the measurement accuracy under the environmental conditions of 5.1.4 shall not exceed 0.1%.
5.3.3 Electromagnetic compatibility
5.3.3.1 Electrostatic discharge immunity
When the surface of the electronic dispenser that is easily touched by the operator is subjected to direct electrostatic discharge (test voltage 8×(1±10%) kV) or air discharge (test voltage 15×(1±10%) kV) test, the electronic dispenser shall comply with the requirements of a) and b) in 5.3.2.4. 5.3.3.2 Radio frequency electromagnetic field radiation immunity
In the electromagnetic field with a frequency of 80MHz1000MHz and a field strength of 3V/m, the electronic dispenser shall comply with the requirements of a) and b) in 5.3.2.4.
5.3.3.3 Immunity to electrical fast transient pulse groups At the power supply port of the electronic dispenser, the open circuit output voltage peak is 2×(1±10%)kV, and the pulse repetition frequency is 5×(1±20%)kHz; at the I/O signal, data and control port (only when the length of the data line, signal line or control line exceeds 1m), the open circuit output test voltage peak is 1×(1±10%)kV, and the pulse repetition frequency is 5×(1±20%)kHz. The dispenser shall comply with the requirements of a) and b) in 5.3.2.4. 5.3.3.4 Immunity to voltage sag, short interruption and voltage variation When the electronic dispenser is powered by AC, the voltage drops instantly, and the voltage amplitude decreases by 60% within one cycle, and the duration is 25 cycles; the voltage is short-term interrupted: the voltage amplitude decreases by 100% within one cycle, and the duration is 10 cycles. The dispenser shall comply with the requirements of a) and b) in 5.3.2.4.
5.3.3.5 Surge (impact) immunity
Electronic fuel dispensers shall meet the requirements of a) and b) in 5.3.2.4 under the open circuit test voltage of 2X(1±10%)kV. 5.3.4 Power-off protection and re-display
When the electronic fuel dispenser is interrupted due to power failure during the refueling process, all data shall be completely retained. In the event of a fault, the display time of the current refueling volume 6
GB/T9081—2001
shall not be less than 15 minutes, or within 1 hour after the fault, the sum of the single or multiple re-display times of manual control shall not be less than 5 minutes. 5.3.5 Additional requirements for tax-controlled fuel dispensers
5.3.5.1 Hardware and structural requirements
a) Tax-controlled fuel dispensers must use unified monitoring software. The monitoring microprocessor, tax control memory and real-time clock should be installed in the same board-level component as the electronic counter, and its circuit mode and function should comply with the requirements of Appendix A and Appendix B of JJF1060-1999; b) The tax control memory is under the sole control of the monitoring microprocessor and can record tax data for at least 7 years. The capacity of the tax control memory selected for each fuel gun is not less than 128kB, and the data therein can be queried. It should comply with the requirements of Appendix A and Appendix D of JJF1060-1999,
c) The display of the tax control fuel dispenser is under the sole control of the monitoring microprocessor to ensure that the displayed data is completely consistent with the stored data, which should comply with the requirements of Appendix C of JF1060-1999;
d) The tax control fuel dispenser should be designed with an RS-232C standard tax reporting interface, through which the tax authorities can audit the tax situation. The interface protocol shall comply with the requirements of Appendix D of JJF1060-1999; e) The tax-controlled fuel dispenser shall indicate the fuel nozzle position number at the fuel nozzle position (single gun may not be numbered); f) A solenoid valve must be installed at the inlet or outlet of the measuring transducer; g) The monitoring microprocessor, tax-controlled memory and real-time clock chip shall be sealed with glue and stamped. The main board and the housing shall be lead-sealed. 5.3.5.2 Functional requirements
a) The tax-controlled fuel dispenser shall pass the tax-controlled function test of the national designated inspection unit and obtain the tax-controlled function certificate; b) The pulse equivalent of the tax-controlled fuel dispenser shall be solidified in the application program, and shall not be modified by keyboard operation or other methods. The total cumulative amount of refueling and the amount of money shall not be changed or cleared; c) It shall have a marking function. Before initialization (for factory commissioning, installation and commissioning, and the first on-site verification), the details of the refueling amount shall be marked. This function will automatically disappear after initialization; d) Initialization shall comply with the requirements of 9.5 of JJF10601999 e) The design of the tax-controlled refueling machine shall ensure that the monitoring microprocessor can lock the refueling machine, that is, when the monitoring microprocessor cannot work normally, the refueling machine cannot work either.
6 Test conditions, test items and test methods 6.1 Test conditions and test items
6.1.1 Test conditions
After the parts of the tanker are fully assembled and meet the relevant technical requirements, various tests are carried out under the following conditions: a) The test environment temperature should be within the range of -20℃ to +40℃, and the temperature change during the test should not exceed 3℃ b) Relative humidity: 30% to 90%;
c) The test medium should be consistent with the medium actually used in the tanker or have the same viscosity, and water shall not be used as the test medium; d) Power supply: nominal voltage +10% to -15%; nominal frequency ±1Hz; e) During the test, the highest temperature of the medium should not be higher than 30℃, and the medium should not solidify at the lowest temperature; f) During the test, the difference between the medium temperature of the tanker and the medium temperature in the standard measuring instrument should not exceed 4℃, otherwise the test cannot be carried out. 6.1.2 Test items
The test items are shown in Tables 1, 2 and 3.
Table 1 Whole machine inspection
Structure and appearance
Operation test
Inspection items
Technical requirements
Chapter number
Test method
Chapter number
Type test
Factory inspection
Flow test
Measuring accuracy test
Minimum measured value test
Flow interruption test
Working stability test
Transportation test
Inspection items
Mechanical refueling machine
Ambient temperature test
Noise detection
Electrical safety inspection
Explosion-proof performance inspection
GB/T9081—2001
Table 1 (end)
Technical requirements
Chapter number
High temperature test
Low temperature test
Grounding terminal
Connection resistance
Earth leakage current
Electrical strength
Static conductivity
Note: The items marked with \ in the table are the items to be tested; the items marked with "-" are the items not to be tested. Table 2 Additional tests for electronic fuel dispensers
Inspection items
Main function inspection of electronic fuel dispensers
Pulse equivalent and cumulative number
Function inspection of tax-controlled fuel dispensers
Power supply adaptability test
High temperature test
Environmental adaptability
Electromagnetic compatibility
Low temperature test
Marking inspection
Lock function inspection
Tax control certificate
Damp heat alternation (condensation) test
Electrostatic discharge immunity test
Radio frequency electromagnetic field radiation immunity test|| tt||Electrical fast transient pulse group immunity test
Voltage sag, short interruption and voltage variation immunity test
Surge (impact) immunity test
Power-off protection and re-display test
Technical requirements
Chapter number
5.3.5.26）
5.3.5.2c）
5.3.5.2e）
5.3.5.2a）
5.3.2.4
a) and b)
Note: Items marked with \V\ in the table are items to be tested; items marked with "-" are items not to be tested. Test method
Chapter number
Test method
Chapter number
6.3.1.2a)
6.3.1.2b)
6.3.1.2c)
6.3.1.2d)
Type test
Type test
Factory inspection
Factory inspection
Component name
Measuring transducer
Oil-gas separator
Oil delivery hose
GB/T9081—2001
Component performance test
Inspection items
Measuring accuracy test| |tt||Minimum measured value test
Oil pressure resistance test
Working stability test
Oil pressure resistance test
Performance test
Hose content volume change test
Static conductivity test
Oil pressure resistance test
Oil inlet vacuum pressure test
Outlet pressure test
Flow testbzxz.net
Noise detection
Technical requirements
Chapter number
5.2.5b)
5.2.7b) and c)
Note: The items marked with \V\ in the table are the items to be tested; the items marked with “—” are the items not to be tested. 6.2 Whole machine inspection
6.2.1 Structural and appearance inspection
Test method
Chapter number
6.4. 4. 4
Type test
Visually inspect the appearance, structure, label and seal of the fuel dispenser, which shall meet the requirements of 5.1.9, 8.1 and 8.2. 6.2.2 Operation test
a) Carry out at the maximum flow rate;
Factory inspection
b) The whole machine runs 1000L, and during the operation, it shall repeatedly complete various actions such as starting, stopping, and automatic zeroing for no less than 9 times. All parts shall not be loose, and work normally, flexibly, coordinated and reliably; c) There shall be no leakage in the hydraulic oil circuit and no abnormal noise during the operation. 6.2.3 Flow test
6.2.3.1 Test equipment
Stopwatch with a graduation value of 0.1s.
6.2.3.2 Test method
After the dispenser is started, open the oil gun to circulate the test oil in the entire system: observe the oil sight glass until there are no bubbles, then put the oil gun back to its original position; pick up and open the oil gun again to the maximum flow position, record the value displayed by the 1min counting system, which is the flow of the dispenser under test. The flow should not exceed ±10% of the rated flow. 6.2.4 Measurement accuracy test
This test is carried out after the whole machine operation test is completed. 6.2.4.1 Test instruments and equipment
a) A special standard metal measuring instrument that meets the requirements of JJG259, whose nominal capacity should not be less than the 1min discharge of the dispenser's calibration flow. The measurement accuracy of the standard metal measuring instrument should not be less than one-fifth of the maximum allowable error of the dispenser; b) A temperature measuring instrument with a measurement range of -30℃ to +40℃ and a minimum graduation value of 0.2℃. 6.2.4.2 Verification points
a) The test is carried out at 6 flow points including the maximum flow Qx and the minimum flow Q, namely: Q11.00XQmx
Q4=0.25×Qmax
Q2=0.63XQmax
Qa-0.40XQmax
Each flow point is measured at least three times;
GB/T9081—2001
Q5-0.16×Qmx
Q=0.10XQm=Qmlm
b) For the measuring transducer that has been adjusted in the test, during the factory inspection, the accuracy test of the whole machine is allowed to detect only the maximum flow Qx, the maximum flow QmaxX40% and the minimum flow Qmn, and each point is measured three times. 6.2.4.3 Test method
a) Place the standard measuring instrument on a hard flat ground, adjust the measuring instrument to a horizontal state and ground the standard measuring instrument; b) Wet the measuring instrument and empty it as required; c) Remove the oil gun, start the fuel dispenser, make the counter of the fuel dispenser return to zero and observe that the oil in the oil sight glass becomes transparent and there are no bubbles, then adjust the flow rate to the calibration flow rate and fill the measuring instrument with oil. At the same time, use a temperature measuring instrument to measure the oil temperature at the outlet of the oil gun. When the oil fills the measuring instrument, close the oil gun, read and record the indication of the fuel dispenser; d) After the oil foam and bubbles in the measuring instrument disappear, read the indication of the measuring instrument as required and record the temperature of the oil in the measuring instrument; e) The standard measuring instrument indication readings are all in L, with three decimal places; f) Repeat items b), c) and d) for each flow calibration point, and complete all tests three times for each point. 6.2.4.4 Calculation of basic error and repeatability error The basic error and repeatability error of each point shall be calculated according to the "Calculation Formula" in Article 21 of JJG443-1998, and shall meet the requirements of 5.1.1.4.
6.2.5 Minimum measured value test
It shall be carried out in accordance with the provisions of Appendix A2 of JJG443-1998. It shall meet the requirements of 5.1.1.2. 6.2.6 Flow interruption test
It shall be carried out in accordance with the provisions of Appendix A3 of JJG443-1998, and shall meet the requirements of 5.1.1.5. 6.2.7 Working stability test
It shall be carried out in accordance with the provisions of Appendix A6 of JJG443-1998 to determine the long-term stability of the fuel dispenser. It shall meet the requirements of 5.1.7. 6.2.8 Transportation test
Place the qualified fuel dispenser under packaging and transportation conditions, and adopt automobile transportation test. The road configuration is 100km for second-class roads and 200km for third-class roads as specified in JTJ01-1997, and the speed is 30km/h~40km/h; the fuel dispenser can also be placed on a vibration table for simulation test. After the test, unpack and inspect all parts for looseness and ring damage, and then check them item by item according to the provisions of 6.2.1~6.2.5, which should meet the requirements of 5.1.1 and 5.1.2.
6.2.9 Environmental temperature test of mechanical fuel dispenser
6.2.9.1 High temperature test
Place the qualified fuel dispenser in a high temperature test room, gradually heat it up to 40℃ (heating rate is not more than 1℃/min), keep it warm for 4h, and then check them item by item according to the provisions of 6.2.3 and 6.2.4, which should meet the requirements of 5.1.1 and 5.1.2. 6.2.9.2 Low temperature test
Place the qualified fuel dispenser in the low temperature test room, gradually cool it down to -20℃ (cooling rate is not more than 1℃/min), keep it warm for 4 hours, and then check it item by item according to the provisions of 6.2.3 and 6.2.4, and it shall meet the requirements of 5.1.1 and 5.1.2. 6.2.10 Noise detection
The test equipment and test methods shall be carried out in accordance with the provisions of GB/T3768, and shall meet the requirements of 5.1.6. 6.2.11 Electrical safety inspection
6.2.11.1 Corrosion resistance test of grounding terminal shall be inspected in accordance with the provisions of 2.5.10 of GB4943-1995, and it shall meet the requirements of c) in 5.1.10. 6.2.11.2 Connection resistance test
The connection resistance between the protective grounding terminal or grounding contact and the parts that need to be grounded shall be tested in accordance with the provisions of 2.5 of GB4943-1995 and shall meet the requirements of d) in 5.1.10. 10
6.2.11.3 Earth leakage current test
GB/T9081-2001
Tested in accordance with the provisions of 5.2 of GB4943-1995 and shall meet the requirements of a) in 5.1.10. 6.2.11.4 Dielectric strength test
Tested in accordance with the provisions of 5.3 of GB4943-1995 and shall meet the requirements of b) in 5.1.10. 6.2.11.5 Static electricity conductivity test
Use an instrument to check the connection between the two ends of the hose in the oil delivery hose assembly and the fuel gun and the fuel dispenser oil sight glass. It shall meet the requirements of e) in 5.1.10.
6.3 Additional tests for electronic fuel dispensers
For electronic fuel dispensers equipped with electronic counters, the following additional tests shall also be carried out. 6.3.1 Main function inspection
6.3.1.1 Power on the electronic counter of the electronic fuel dispenser and input analog signals; the electronic fuel dispenser can also be tested as a whole to check its various functions.
6.3.1.2 Tax control fuel dispensers shall also carry out the following functional inspections: a) Pulse equivalent and cumulative number inspection: By checking the software and hardware circuits of the electronic counter in the fuel dispenser, check whether the pulse equivalent can be changed and whether the total cumulative number of fueling amount and the total cumulative number of money can be changed and cleared. It shall meet the requirements of b) in 5.3.5.2. b) Marking inspection: Check the marking of the fueled amount, which shall meet the requirements of c) in 6.3.5.2. c) Locking function check: Check the working status of the fuel dispenser by cutting off the signal channel of the measuring converter and disabling the monitoring microprocessor. It shall meet the requirements of e) in 5.3.5.2.
d) The tax control function certificate and test report shall meet the requirements of a) in 5.3.5.2. 6.3.2 Environmental adaptability test
6.3.2.1 High temperature test
Perform according to 7.4.2 of JJF1060-1999. It shall meet the requirements of 5.3.2. Other functions shall be normal. 6.3.2.2 Low temperature test
Perform according to 7.4.1 of JJF1060-1999. It shall meet the requirements of 5.3.2. Other functions shall be normal. 6.3.2.3 Humidity and heat alternation test
Perform according to 7.4.3 of JJF1060-1999. It shall meet the requirements of 5.3.2. Other functions shall be normal. 6.3.3 Power adaptability test
Perform according to the provisions of 7.7 of JJF1060-1999. During and after the test, the refueling machine can work normally and meet the requirements of 5.1.11.
6.3.4 Electromagnetic compatibility test
6.3.4.1 Electrostatic discharge immunity test
Perform according to the provisions of 7.9.1 of JJF1060-1999. During and after the test, it shall meet the requirements of a) and b) in 5.3.2.4. 6.3.4.2 Radio frequency electromagnetic field radiation immunity test shall be carried out according to the provisions of 7.9.2 of JJF1060-1999. During and after the test, it shall meet the requirements of a) and b) in 5.3.2.4. 6.3.4.3 The electrical fast transient pulse group immunity test shall be carried out in accordance with the provisions of 7.9.3 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.4 The voltage sag, short interruption and voltage variation immunity test shall be carried out in accordance with the provisions of 7.9.4 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.5 The surge (impact) immunity test shall be carried out in accordance with the provisions of 7.9.5 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.5 Power-off protection and re-display test
6.3.5.1 Test equipment
Stopwatch with a graduation value of 0.1s.2 b) requirement. b) Marking check: Check the marking of the refueled amount, which shall meet the requirement of c) in 6.3.5.2. c) Locking function check: Check the working status of the refueling machine by cutting off the signal channel of the measuring converter and disabling the monitoring microprocessor, which shall meet the requirement of e) in 5.3.5.2.
d) The tax control function certificate and test report shall meet the requirement of a) in 5.3.5.2. 6.3.2 Environmental adaptability test
6.3.2.1 High temperature test
Conduct according to the provisions of 7.4.2 of JJF1060-1999, which shall meet the requirements of 5.3.2, and other functions shall be normal. 6.3.2.2 Low temperature test
Conduct according to the provisions of 7.4.1 of JJF1060-1999, which shall meet the requirements of 5.3.2, and other functions shall be normal. 6.3.2.3 Humidity and heat alternating test
Perform according to the provisions of 7.4.3 of JJF1060-1999, and shall meet the requirements of 5.3.2. Other functions shall be normal. 6.3.3 Power adaptability test
Perform according to the provisions of 7.7 of JJF1060-1999. During and after the test, the refueling machine can operate normally and shall meet the requirements of 5.1.11.
6.3.4 Electromagnetic compatibility test
6.3.4.1 Electrostatic discharge immunity test
Perform according to the provisions of 7.9.1 of JJF1060-1999, and during and after the test, it shall meet the requirements of a) and b) in 5.3.2.4. 6.3.4.2 The radio frequency electromagnetic field radiation immunity test shall be carried out in accordance with the provisions of 7.9.2 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.3 The electrical fast transient pulse group immunity test shall be carried out in accordance with the provisions of 7.9.3 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.4 The voltage sag, short interruption and voltage variation immunity test shall be carried out in accordance with the provisions of 7.9.4 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.5 The surge (impact) immunity test shall be carried out in accordance with the provisions of 7.9.5 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.5 Power-off protection and re-display test
6.3.5.1 Test equipment
Stopwatch with a scale value of 0.1s.2 b) requirement. b) Marking check: Check the marking of the refueled amount, which shall meet the requirement of c) in 6.3.5.2. c) Locking function check: Check the working status of the refueling machine by cutting off the signal channel of the measuring converter and disabling the monitoring microprocessor, which shall meet the requirement of e) in 5.3.5.2.
d) The tax control function certificate and test report shall meet the requirement of a) in 5.3.5.2. 6.3.2 Environmental adaptability test
6.3.2.1 High temperature test
Conduct according to the provisions of 7.4.2 of JJF1060-1999, which shall meet the requirements of 5.3.2, and other functions shall be normal. 6.3.2.2 Low temperature test
Conduct according to the provisions of 7.4.1 of JJF1060-1999, which shall meet the requirements of 5.3.2, and other functions shall be normal. 6.3.2.3 Humidity and heat alternating test
Perform according to the provisions of 7.4.3 of JJF1060-1999, and shall meet the requirements of 5.3.2. Other functions shall be normal. 6.3.3 Power adaptability test
Perform according to the provisions of 7.7 of JJF1060-1999. During and after the test, the refueling machine can operate normally and shall meet the requirements of 5.1.11.
6.3.4 Electromagnetic compatibility test
6.3.4.1 Electrostatic discharge immunity test
Perform according to the provisions of 7.9.1 of JJF1060-1999, and during and after the test, it shall meet the requirements of a) and b) in 5.3.2.4. 6.3.4.2 The radio frequency electromagnetic field radiation immunity test shall be carried out in accordance with the provisions of 7.9.2 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.3 The electrical fast transient pulse group immunity test shall be carried out in accordance with the provisions of 7.9.3 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.4 The voltage sag, short interruption and voltage variation immunity test shall be carried out in accordance with the provisions of 7.9.4 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.4.5 The surge (impact) immunity test shall be carried out in accordance with the provisions of 7.9.5 of JJF1060-1999. During and after the test, it shall comply with the requirements of a) and b) in 5.3.2.4. 6.3.5 Power-off protection and re-display test
6.3.5.1 Test equipment
Stopwatch with a graduation value of 0.1s.
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