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JJG 907-2006: Verification Regulation of Automatic Instruments for Weighing Road Vehicles in Motion
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Verification Regulation of Automatic Instruments for Weighing Road Vehicles in Motion
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Automatic Instruments for Weighing Road Vehicles in Motion (Total Vehicle Weighing)
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Verification Regulation of Axle (Wheel)Load Scales
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Basic data | Standard ID | JJG 907-2006 (JJG907-2006) | | Description (Translated English) | Verification Regulation of Automatic Instruments for Weighing Road Vehicles in Motion | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.060 | | Word Count Estimation | 78,767 | | Date of Issue | 2006-05-23 | | Date of Implementation | 2006-11-23 | | Older Standard (superseded by this standard) | JJG 907-2003 | | Quoted Standard | OIML R134 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard specifies the dynamic automatic weighing road vehicles (hereinafter referred to as " dynamic vehicle " or " Equalizer") measurement performance requirements, general technical requirements, control and measuring instruments test methods and test procedures. For dynamic truck scale type evaluation (shape identification) initial verification, testing and use of follow-up testing and product quality supervision and inspection. | JJG 907-2006: Verification Regulation of Automatic Instruments for Weighing Road Vehicles in Motion
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Verification Regulation of Automatic Instruments for Weighing Road Vehicles in Motion
National Metrology Verification Regulations of the People's Republic
Dynamic road vehicle automatic weighing instrument
Released on.2006-05-23
Implementation of.2006-11-23
The General Administration of Quality Supervision, Inspection and Quarantine issued
Dynamic road vehicle automatic weighing instrument verification procedure
Instrumentsfor
JJG 907-2006 replaced
JJG 907-2003
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on May 23,.2006, and
Implemented on November 23,.2006.
Focal Point. National Weighing Instrumentation Technical Committee
Main drafting unit. Qingdao Weighing Instrument Testing Center
China Institute of Metrology
Harbin Metrology Testing and Testing Institute
Shandong Jiaotong University
Shandong Institute of Metrology
Participated in the drafting unit. METTLER TOLEDO (Changzhou) Weighing Equipment System Co., Ltd.
Beijing Zhongshan New Technology Equipment Research Institute
Beijing Wanji Technology Co., Ltd.
Zhengzhou Hengke Industrial Co., Ltd.
Shanxi Xinyuan Automation Instrument Co., Ltd.
This regulation entrusts the National Weighing Instrumentation Technical Committee to explain
The main drafters of this procedure.
Wang Junguo (Qingdao Weighing Apparatus Testing Center)
Tang Wei (China Institute of Metrology)
Jinlongxue (Harbin Metrology Testing Institute)
An Guojian (Shandong Jiaotong University)
Lu Xinguang (Shandong Institute of Metrology)
Participate in the drafters.
Wu Huifang (METTLER TOLEDO (Changzhou) Weighing Equipment System Co., Ltd.)
Zhao Mengjie (Beijing Zhongshan New Technology Equipment Research Institute)
Cui Xuejun (Beijing Wanji Technology Co., Ltd.)
Li Qiang (Zhengzhou Hengke Industrial Co., Ltd.)
Liang Yuewu (Shanxi Xinyuan Automation Instrument Co., Ltd.)
table of Contents
Terms (nouns and definitions) (1)
1 Scope (10)
2 Citations (10)
3 Terms and units of measurement (10)
3.1 Terminology (10)
3.2 Unit of measurement (10)
4 Overview (10)
4.1 Static Weighing (10)
4.2 Not applicable scales (10)
5 Metrological performance requirements (11)
5.1 Accuracy level (11)
5.2 Maximum allowable error of dynamic test (11)
5.3 Maximum allowable error of static test (13)
5.4 Graduation value (d) (13)
5.5 Minimum weighing (Min) (14)
5.6 Installation and testing of dynamic truck scales (14)
5.7 Consistency of pointing device and printing device (14)
5.8 Impact Quantity (14)
5.9 Static Weighing Scale (15)
5.10 Operating speed (15)
6 General technical requirements (15)
6.1 Applicability (15)
6.2 Operational Safety (15)
6.3 Zero device (16)
6.4 Integrated Control Scale (16)
6.5 indicating device and printing device (16)
6.6 Installation (18)
6.7 Sealing device (18)
6.8 Descriptive signs (18)
6.9 verification mark (19)
7 Requirements for electronic weighing instruments (20)
7.1 General requirements (20)
7.2 Applicability (20)
7.3 Functional requirements (20)
7.4 Inspection and Testing (21)
8 Measuring instrument control (22)
8.1 Type Evaluation (22)
8.2 First verification, subsequent verification and inspection in use (27)
Appendix A Calibration page, verification certificate and verification result notice page format (36)
Appendix B Test Procedure for Type Evaluation (Formification Identification) (42)
Appendix C Practical Guidance for Dynamic Truck Scale Installation (71)
Appendix D General Requirements for Installation and Operation of Dynamic Truck Scales (72)
the term
(nouns and definitions)
Terms used in this Protocol and the International Standards of Basic Vocabulary and General Terms (VIM-1993 Edition),
The Systematic Vocabulary (VIML-2000 Edition) is consistent. In addition, this procedure also uses the following only applicable to this procedure.
Special terms and definitions.
T.1 general definition generaldefinitions
T.1.1 mass mass
A physical quantity that is based on kilograms.
T.1.2 weight weight
The weight of an object is the result of gravity acting on the object, so the weight is the same as the force.
The amount. It can also be called gravity, and its size is the product of the mass of the object and the gravitational acceleration of the object.
Ie. W=mg
Where. W---weight; m---mass; g---gravity acceleration.
T.1.3 load load
Due to the action of gravity, the object, vehicle, bulk material, etc., which exert force on the loader or the ground of the scale,
It also directly refers to their force.
T.1.4 Weighing weighing
The measurement of the mass of the object (the total mass of the vehicle or the part of the vehicle) is also called weighing.
T.1.5 Weighing instrumentation
A measuring instrument that determines the mass of an object by gravity acting on the object.
Scales can also be used to determine other quantities, sizes, parameters, or characteristics of the mass function.
According to its operation, the scale can be divided into automatic weighing instruments and non-automatic weighing instruments.
T.1.6 automatic weighing instrument automaticweighinginstrument
An instrument that automatically weighs in accordance with a predetermined processing procedure without operator intervention during the weighing process.
T.1.7 Dynamic road vehicle automatic weighing instrument automaticinstrumentsforweighingroadvehiclesinmotion
With the carrier and including the approach road, the total mass of the vehicle is determined by weighing the moving vehicle and
(or) an automatic weighing instrument for vehicle axle loads. Dynamic road vehicle automatic weighing instrument is referred to as dynamic truck scale. Dynamic car
The balance includes dynamic truck scales for weighing the vehicle and dynamic truck scales for axle weighing (dynamic axle balance).
T.1.7.1 Dynamic weighing of vehicle weighing weighinginstrumentsforatotalvehicleinmotion
A dynamic truck scale that determines the total weight of the vehicle in a vehicle weighing manner.
T.1.7.2 Dynamic axis balance weighinginstrumentsforaxlesofvehicleinmotion
Weigh each axis (or group of axes) of the moving vehicle separately and automatically accumulate the weighing knot of the shaft (or shaft group)
A dynamic truck scale that captures the total weight of the vehicle and the axle (or shaft group) load.
T.1.8 control instrument controlinstrument
Standard measuring instrument for determining the total mass of a reference vehicle, or static reference to a single-axis load.
In dynamic testing, the control instrument that provides the reference value can be.
● Another independent weighing instrument separate from the instrument being measured, called a separate control weighing instrument;
● If the instrument under test has a static weighing mode, the instrument to be measured can also be used as a control instrument, called integrated control.
Weighing machine.
T.1.9 metrology authority
The legally authorized technical institutions and verification agencies authorized by the state, or can clearly determine whether the scales comply with these regulations.
Responsible manufacturers who are required by the process and approved.
T.2 structure construction
Note. In this procedure, the term "device" refers to any component that performs one or more specific functions in some way.
T.2.1 Weighing control area controlledweighingarea
Dynamic truck scales are used for specific locations of weighing operations that meet the installation requirements of Appendix C of this Code.
T.2.2 Weighing zone weighzone
The weighing zone consists of a carrier and an approach.
T.2.2.1 Approach road apron
The approach road is part of the weighing zone, but not the carrier, but is located at both ends of the carrier.
T.2.3 carrier loadreceptor
It is part of the weighing zone and is used in dynamic truck scales to accept components that are weighed. When applied or unloaded on it
The balance of the dynamic truck scale changes with the load.
T.2.3.1 Single load carrier singleloadreceptor
Weighing carriers can be weighed as follows.
--- A carrier that can simultaneously bear all the wheels on a vehicle and weigh the entire vehicle;
--- A carrier that can simultaneously bear all the wheels on the axle set of the vehicle and locally weigh the axle or axle set;
--- A carrier that can simultaneously bear all the wheels on the single axis of the vehicle and locally weigh the shaft;
--- A wheel that can support the wheels at both ends of the vehicle shaft and locally weigh the shaft.
T.2.3.2 Multi-load carrier multipleloadreceptors
Install a row of multiple carriers at a certain distance in the direction of travel of the vehicle to complete the wheel load on all axles
Weigh the car, or repeat the weighing in the order.
T.2.4 load transfer device load-transmittingdevice
The force generated by the load acting on the carrier is transmitted to the components of the load measuring device.
T.2.5 load measuring device load-measuringdevice
Balancer (for balancing the force transmitted by the load transfer device) and indicating device or printing
Device, a component used to measure the mass of a load.
T.2.6 Electronic weighing instrument electronicinstrument
An instrument equipped with an electronic device.
T.2.6.1 electronic device electronicdevice
A device that consists of electronic components and that performs a specific function. Electronic devices are usually made into a single stand
Yuan, and can be tested independently.
T.2.6.2 Electronic component electronicsub-assembly
A part of an electronic device that is constructed of electronic components and that has its own identifiable function.
T.2.6.3 electronic component electroniccomponent
The smallest physical entity that conducts electrons or holes in a semiconductor component, gas, or vacuum.
T.2.7 module module
An identifiable component used to perform one or more specific functions. This component can be measured according to the relevant regulations in this procedure.
And technical requirements to be evaluated separately. The module of the instrument is subject to the specified local error limits of the instrument.
Note. Typical scale modules are. load cells, weighing indicators, analog or digital data processing devices, weighing modules, etc.
T.2.7.1 indicating device indicatingdevice
A device that displays weighing results and other related magnitudes (eg, speed) in mass units in the instrument.
T.2.7.2 Printing device printingdevice
A device capable of printing the weighing result determined by the instrument.
T.2.7.3 load cell loadcel
Considering the effects of gravity acceleration and air buoyancy on the ground, by converting the main measured value (mass) into another
A measured value (voltage, frequency, etc. signal output) signal to measure the mass of the force sensor.
Note. Weighing sensors equipped with amplifiers, analog-to-digital conversion (ADC), and data processing (optional) electronics are called numbers.
Word load cell.
T.2.8 auxiliary device ancilarydevices
T.2.8.1 Zero setting device zero-settingdevice
A device that adjusts the value to zero when there is no load on the carrier.
T.2.8.2 Non-automatic zero setting device non-automaticzero-settingdevice
A device that adjusts the indication to zero by the operator.
T.2.8.3 Semi-automatic zero setting device semi-automaticzero-settingdevice
After a manual command is given, the device can automatically adjust the value to zero.
T.2.8.4 Automatic zero setting device automaticzero-settingdevice
A device that automatically adjusts the indication to zero without operator intervention.
T.2.8.5 Zero tracking device zero-trackingDevice
A device that automatically keeps the zero indication within a certain limit.
T.3 metrological characteristics of mathematicalcharacteristics
T.3.1 Weighing weighing
T.3.1.1 Whole vehicle weighing ful-draughtweighing
Weighing carried out while supporting the entirety of a vehicle on the carrier.
T.3.1.2 Partial weighing partialweighing
Weigh two or more vehicles on the same carrier on the same carrier, weigh each part after weighing
If added, get the weight indication or print value of an entire car.
T.3.1.3 Dynamic weighing weighing-in-motion (WIM)
During weighing, the load corresponds to the weighing of the relative movement of the scale carrier. Dynamic weighing can be divided into continuous and
Non-continuous. For the dynamic truck scale, the dynamic vehicle is determined by measuring and analyzing the dynamic force of the wheel.
The process of total mass or axle load.
T.3.1.4 Static weighing staticweighing
During weighing, the load is equivalent to the weighing of the scale carrier without relative motion. Static weighing is always discontinuous
of.
T.3.1.5 Dynamic wheel force dynamicvehicletyreforce
The moving vehicle is applied to the road surface by the tire of the vehicle, and the force in the vertical direction is constantly changing over time.
In addition to gravity, this force also includes the influence of other dynamic factors on the moving vehicle.
T.3.1.6 tire load tyre load
The total mass of the vehicle when weighed is applied to the static tire, the component expressed in mass units, which is the gravity
A vertically downward force that acts on the total mass of a static vehicle.
T.3.1.7 Axis axle
A combination of two or more wheels and a transverse common axis along the center. Both ends of the shaft to the whole
The width of the vehicle is perpendicular to the direction of travel of the vehicle.
T.3.1.8 Axis group axlegroup
A combination of several axes, the number of axes in the combination and the mutual spacing (wheelbase) between the axes and the axes should be clearly determined
Righteousness.
T.3.1.9 wheel load wheelload
The sum of all wheel tire loads at one end of the shaft. The wheel can consist of a single tire or a double tire.
T.3.1.10 Axis load axleload
The sum of all wheel loads on a shaft, the amount of gravity applied to the total mass of the vehicle is applied to the static
The component on the axis.
T.3.1.11 Single-axis load single-axleload
The uniaxial load is not part of the shaft load in the axle load, and the recorded non-axis load is attributed to the uniaxial load.
T.3.1.12 Static reference uniaxial load staticreferencesingle-axleload
The agreed true value of the uniaxial load of a two-axis rigid vehicle determined under static conditions.
T.3.1.13 Axis group load axle-groupload
The sum of all relevant axle loads in the combination of the axes, the application of gravity to the total mass of the vehicle during weighing
The component to the static axis group.
T.3.1.14 Total vehicle mass totalmassofthevehicle
The total mass of the vehicle, or the total mass of the vehicle combination including all coupled components.
Note. This regulation also refers to the total mass of the vehicle as the total weight of the vehicle.
T.3.2 weighing capacity
T.3.2.1 Maximum capacity (Max) maximumcapacity
Designed by the scale, it can be dynamically weighed without accumulating the maximum load.
Note. The scale for the shaft weighing (axis balance) refers to the maximum shaft load or the maximum shaft load.
T.3.2.2 Minimum weighing (Min) minimumcapacity
Below this load, uncomputed dynamic weighing results may produce excessive relative errors.
Note. The scale for the shaft weighing (axis balance) refers to the minimum shaft load or the minimum shaft group load.
T.3.2.3 Weighing range weighingrange
The range between the maximum and minimum weighing.
T.3.3 division value (d) scaleinterval
In dynamic units, the two dynamically weigh the difference between adjacent values or printed values.
T.3.3.1 Static weighing scale value scaleintervalforstationaryload
When a dynamic truck scale performs static weighing on a vehicle or test load, two adjacent indications expressed in mass units or
The difference between the printed values.
T.3.4 speed speed
T.3.4.1 Maximum operating speed (vmax) maximumoperatingspeed
The maximum speed that can be used for normal dynamic weighing as specified by the scale design. Exceeding this speed, the weighing result may have been generated.
Large relative error.
T.3.4.2 Minimum operating speed (vmin) minimumoperatingspeed
The minimum speed that can be used for normal dynamic weighing as specified by the scale design, below which the weighing result may have been generated.
Large relative error.
T.3.4.3 Operating speed range rangeofoperatingspeeds
The range between the highest operating speed and the lowest operating speed that can be dynamically weighed.
T.3.4.4 Maximum passing speed maximumtransitspeed
Allows non-weighing vehicles to pass the maximum speed of the weighing zone without creating a defined permanent for the metering performance of the scale
Sexual influence.
T.3.5 Warm-up time warm-uptime
The time it takes for the instrument to go from power-on to other conditions that meet the requirements.
T.3.6 Durability Durability
The ability of the instrument to maintain its characteristics throughout the specified life cycle.
T.3.7 final weighing value finalweighingvalue
The weighing value of the instrument when it is completely static and balanced without environmental influences and disturbances.
T.3.8 stable balance stableequilibrium
The weighing result is already close to the final weighing value, and the weighing instrument is considered to be balanced and stable.
T.3.9 discriminating force discrimination
The ability of the instrument to respond to small changes in load, for the discriminating force threshold of a given load, is the following additional load
Minimum value of the load. when the additional load is gently placed or removed on the carrier, the indication value can be generated.
Awareness of change.
T.4 indication and error indicationsanderrors
T.4.1 Digital indication value digitalindication
A scale mark is composed of a series of numbers, and an indication of the interpolation of the score value is not allowed.
T.4.2 error errors
T.4.2.1 (indicator) error error (ofindication)
The difference between the indication value of the instrument and the true value of the quality (convention).
T.4.2.2 inherent error intrinsicerror
The error of the instrument under reference conditions.
T.4.2.3 Initial intrinsic error initialintrinsicerror
The inherent error determined by the instrument prior to the performance test and the range stability test.
T.4.2.4 Maximum allowable error (MPE) maximumpermissibleerrors (MPE)
The weighing instrument in the reference position is given by the current procedure between the scale indication and the agreed true value after the zero error correction
The allowable error limit (both positive and negative).
T.4.2.5 Maximum allowable deviation (MPD) maximumpermissibledeviation (MPD)
The maximum allowable deviation limit between the uniaxial load and its corrected average, or between the axial load and its corrected average
The maximum deviation limit.
T.4.2.6 increase fault
The difference between the indication error of the instrument and the inherent error.
In principle, the increase is caused by an undesirable data change inside the electronic scale or via the electronic scale.
of. In this specification, "increase" is expressed numerically.
T.4.2.7 significant increase significantfault
A gain greater than 1d.
Note. d is the value expressed in mass units, which is equal to the difference between two dynamic weighing adjacent indication values or printed values.
The following situations are not considered to be significant increases.
--- the increase in the scale due to the simultaneous and independent reasons;
--- means that it is impossible to make any measurement increase;
--- Severity is bound to be perceived by all those who are concerned about the measurement results.
--- Due to the temporary increase caused by the instantaneous change of the indication value, this change cannot be explained as a measurement result.
Store or convert.
T.4.2.8 Range stability spanstability
During the entire life cycle, the scale maintains the difference between the weight indication and the zero indication at maximum weighing.
Ability to specify limits.
T.4.2.9 Rounding error roundingerror
The value between the digital measurement result (display or print) of the instrument and the analog indication of the corresponding measurement.
T.4.2.10 Repeatability (R) repeatability (R)
Under the same measurement conditions, successively multiple measurements are taken to obtain a close result between the highest and lowest
To the extent.
Note. Repeatability conditions include.
● the same measurement procedure;
● the same observer;
● Use the same measuring instrument under the same conditions;
● the same location;
● Repeat in a short time.
Repeatability can be quantitatively expressed by the dispersion of the measurement results.
T.4.2.11 (quantity) convention true value (ofaquantity)
For a given purpose, with appropriate uncertainty, given a certain amount of value, sometimes the value is agreed upon. This
The specific amount in the vehicle refers to the axle load of the reference vehicle and the total mass of the vehicle.
T.4.2.12 (uniaxial load or average value of shaft load) correction result correcteddult(meanaxle
Andaxle-groupload)
Algebraically corrected measurement results for systematic errors.
T.4.2.13 Uniaxial load (or shaft group load) corrected mean correctedmeansingle-axleload (axle
-groupload)
The average of the uniaxial load (or shaft group load) corrected by the correction factor. Uniaxial load (or shaft load)
The corrected mean value is equal to the average of the uniaxial load (or shaft group load) multiplied by the correction factor.
Note. The correction factor of the reference vehicle is equal to the “reference vehicle total weight agre...
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