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Basic data | Standard ID | GB/T 27739-2011 (GB/T27739-2011) | | Description (Translated English) | Automatic catch weighing instruments | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N13 | | Classification of International Standard | 17.100 | | Word Count Estimation | 162,111 | | Date of Issue | 2011-12-30 | | Date of Implementation | 2012-07-01 | | Quoted Standard | GB/T 191; GB/T 2887; GB/T 4879; GB/T 5048; GB/T 2423.1; GB/T 2423.2; GB/T 2423.3; GB/T 2424.1; GB/T 2424.2; GB/T 7551; GB/T 7724; GB/T 13384; GB/T 15395; GB 14249.1; GB/T 14250; GB/T 17626.2; GB/T 17626.3; GB/T 17626.4; GB/T 17626.5; GB/T 17626.6; GB/T 17626.11; QB 1563; QB/T 1588.1; QB/T 1588.2; QB/T 1588.3; QB/T 1588.4 | | Adopted Standard | OIML R51-2006, MOD | | Regulation (derived from) | National Standard Approval Announcement 2011 No.22 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the terms automatic sorting weighing, product model, requirements, inspection methods and rules, signs, packaging, transport and storage. This standard also provides a way to evaluate traceable automatic sorting weighing metrological characteristics or technical characteristics. Provide standardized requirements and test procedures and forms. This standard applies to pre-packaged discrete single load or bulk load for automatic weighing scales. | GB/T 27739-2011: Automatic catch weighing instruments---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Automatic catchweighing instruments
ICS 17.100
N13
National Standards of People's Republic of China
Automatic weighing instrument
(OIMLR51.2006(E), MOD)
Published on.2011-12-30
2012-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
3.1 General definition 2
3.2 Structure 4
3.3 Measurement characteristics 8
3.4 indication and error 10
3.5 Impact Quantity and Reference Conditions 12
3.6 Test 12
3.7 Measuring instrument control 13
3.8 Symbol 13
4 Product Model 14
5 Measurement requirements 14
5.1 Accuracy Level 14
5.2 Classification of scales 15
5.3 Other requirements for multi-division scales 15
5.4 auxiliary indicating device 16
5.5 Maximum allowable error 17
5.6 Maximum allowable error of the impact factor test 18
5.7 Unit of measurement 19
5.8 Allowable differences between weighing results 19
5.9 Impact factor 19
5.10 Range Stability Test 20
5.11 Test indication or printout (automatic operation) 20
6 Technical requirements 20
6.1 Applicability of use 20
6.2 Operational Security 20
6.3 Weighing result indication 21
6.4 Digital indication, printing and storage devices 22
6.5 Zero and zero tracking device 23
6.6 Tanning device 24
6.7 Preset tare device 25
6.8 Weighing range selection for multi-range instruments 26
6.9 Devices for selecting or switching between different carriers, load transfer devices and various load measuring devices 26
6.10 checkweigher or price labeling scale 27
7 Electronic weighing device requirements 27
7.1 General requirements 27
7.2 Functional requirements 28
7.3 Security features 28
7.4 Load cell 29
7.5 Manufacturing 29
7.6 Installation 29
8 Test method 29
8.1 Automatic operation test 29
8.2 Non-automatic (static) operation test 31
8.3 Automatic correction of the condition of the device 31
8.4 Test mode 31
8.5 Test of the electronic weighing device 32
9 Inspection rules 33
9.1 Type Evaluation 33
9.2 Type evaluation requirements 33
9.3 Factory inspection 35
10 Marking, packaging, transport and storage 35
10.1 Descriptive mark 35
10.2 Verification Mark 37
10.3 Packaging Mark 37
10.4 Packaging 37
10.5 Transportation 37
10.6 Storage 38
Appendix A (Normative Appendix) Automatic Test Weighing Test Method 39
A.1 Type Evaluation Review 39
A.2 Factory inspection review 39
A.3 General requirements for testing 39
A.4 Test procedure 41
A.5 Metrological performance test 41
A.6 Impact factor and interference test 47
A.7 Range stability test (8.5.3) 63
Appendix B (normative appendix) Automatic sorting scale type evaluation report format 65
B.1 Type Evaluation Report Format Description 65
B.2 Commentary requirements in the format of the type evaluation report 66
B.3 Basic information about the type 67
B.4 Weighing device identification 69
B.5 Test equipment used for type evaluation 71
B.6 Test configuration 72
B.7 Type Evaluation Summary 73
B.8 Sample test report for single weight value of class X scale 156
B.9 Sample test report for a single weight value of the Y class instrument 158
Appendix C (informative) 159 of this standard and OIMLR51 (2006E)
Appendix D (informative) The technical provisions of this standard and OIMLR51 (2006E) and their causes 160
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard uses the redrafting method to modify the international legal system No. 51 international recommendation OIMLR51 "automatic inspection and weighing apparatus"
The R51 International Recommendation was drafted in.2005 by the OIMLTC9/SC2 Automatic Weighing Subcommittee. R51 "automatic check and balance
The device is divided into two parts. the first part (R51-1) "measurement requirements and technical requirements test"; the second part (R51-2) "type evaluation report".
In order to be structurally consistent with the R51 International Recommendation, Appendix A and Appendix B of the R51 International Recommendation are used as standard normative
Appendix A and Appendix B.
Since the current management model of measurement products in China is different from the international one, there are a small number of this standard and R51 international recommendations.
Differences, for the sake of comparison, a checklist of the provisions of this standard and the internationally recommended clauses is listed in the informative Appendix C.
Due to the legal requirements of our country and the special needs of industry, this standard has been revised when adopting international recommendations. These technical differences
Vertical single lines are identified in the margins of the terms they refer to. A list of technical differences and their causes is given in Appendix D.
for reference.
This standard removes the preface to the R51 International Recommendation.
This standard was proposed by the Light Industry Federation.
This standard is under the jurisdiction of the National Weighing Apparatus Standardization Technical Committee (SAC/TC97).
This standard is drafted by. Seymour Electric Co., Ltd.
Participated in the drafting of this standard. Shanghai Dahe Weighing Apparatus Co., Ltd., METTLER TOLEDO (Changzhou) Weighing Equipment System Co., Ltd., Jiangsu
Provincial Institute of Metrology.
The main drafters of this standard. Li Da, He Fusheng.
Participated in the drafting of this standard. Chen Rixing, Jiang Lian, Liu Wei.
Automatic weighing instrument
1 Scope
This standard specifies the terms, product models, requirements, inspection methods and rules, marking, packaging, transportation and storage of automatic weighing instruments.
This standard also provides a standardized requirement and test for the measurement characteristics or technical characteristics of the automatic weighing instrument in a traceable manner.
Procedures and forms.
This standard applies to automatic weighing instruments that weigh pre-packaged discrete loads or loose single loads.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this standard.
GB/T 191 packaging storage and transportation pictorial signs (GB/T 191-2008, ISO 780.1997, MOD)
GB/T 2887 General Specification for Electronic Computer Sites
GB/T 4879 anti-rust packaging
GB/T 5048 moisture-proof packaging
GB/T 2423.1 Environmental testing of electric and electronic products - Part 2. Experimental methods Test A. Low temperature (GB/T 2423.1-
2008, IEC 60068-2-1..2007, IDT)
GB/T 2423.2 Environmental testing of electric and electronic products - Part 2. Experimental method Test B. High temperature (GB/T 2423.2-
2008, IEC 60068-2-2.2007, IDT)
GB/T 2423.3 Environmental testing of electric and electronic products - Part 2. Experimental method test Cab. constant damp heat test
(GB/T 2423.3-2006, IEC 60068-2-78.2001, IDT)
GB/T 2424.1 Environmental testing for electric and electronic products - Guide to high temperature and low temperature test (GB/T 2424.1-2005, IEC 60068-3-
1.1974, IDT)
GB/T 2424.2 Guidelines for the evaluation of damp heat in environmental testing of electrical and electronic products (GB/T 2424.2-2005, IEC 60068-3-4.
2001, IDT)
GB/T 7551 load cell (GB/T 7551-2008, OIMLR60..2000, MOD)
GB/T 7724 electronic weighing instrument
General technical conditions for GB/T 13384 mechanical and electrical product packaging
General technical conditions for GB/T 15395 electronic equipment cabinet
GB 14249.1 Electronic Weighing Apparatus Safety Requirements
GB/T 14250 weighing instrument terminology
GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test (GB/T 17626.2-2006,
IEC 61000-4-2.2001, IDT)
GB/T 17626.3 Electromagnetic compatibility test and measurement technology RF electromagnetic radiation immunity test (GB/T 17626.3-2006,
IEC 61000-4-3.2002, IDT)
GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test (GB/T 17626.4-
2008, IEC 61000-4-4.2004, IDT)
GB/T 17626.5 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test (GB/T 17626.5-2008,
IEC 61000-4-5.2005, IDT)
GB/T 17626.6 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity of RF field induction (GB/T 17626.6-
2008, IEC 61000-4-6.2006, IDT)
GB/T 17626.11 Electromagnetic compatibility test and measurement techniques Immunity test for voltage dips, short interruptions and voltage changes
(GB/T 17626.11-2008, IEC 61000-4-11.2004, IDT)
QB1563 weighing instrument product model preparation method
QB/T 1588.1 General technical conditions for welding parts of light industrial machinery
QB/T 1588.2 General technical requirements for machining parts of light industrial machinery
QB/T 1588.3 General technical conditions for assembly of light industrial machinery
QB/T 1588.4 General technical conditions for painting of light industrial machinery
3 Terms and definitions
The following terms and definitions defined in GB/T 14250 apply to this document. For ease of use, the following is a list of GB/T 14250
Some terms and definitions in .
3.1 General definition
3.1.1
Weighing instrument
A measuring instrument that determines the mass of an object by gravity acting on the object.
Note. In this standard, “quality” (or “weight value”) is more suitable for the expression “agreed quality” or “agreed value of weighing results in air”, and “weight”
It is a concrete form of quality (equal to physical measuring tools) that is more suitable for its physical and metrological characteristics.
The scale can also be used to determine other magnitudes, values, 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.
3.1.2
Automatic weighing instrument automaticweighinginstrument
An instrument that automatically weighs in accordance with a predetermined processing procedure without operator intervention during the weighing process.
3.1.3
Automatic check weighing instrument automaticcatchweighinginstrument; catchweigher
An automatic weighing instrument that weighs pre-packaged discrete loads or loose single loads.
3.1.3.1
Checkweigher checkweigher
Dividing pre-packaged discrete loads (items) of different qualities into two or more types according to the difference between their mass and nominal set points
The quantity is automatically scaled. Checkweighing scales are also known as weight inspection scales, sorting scales, weight sorting scales, inspection scales, and inspection scales.
3.1.3.2
Label scale weighlabeler
An inspection scale with a dedicated labeling mechanism that identifies the weight value of each prepackaged discrete load.
3.1.3.3
Pricing label scale weigh-pricelabeler
Inspection scale with price and special labeling mechanism. Calculate the price according to the indicated quality and unit price, and indicate the pre-package on the label
The weight value, unit price and total price of the discrete load.
3.1.3.4
Vehicle-mounted scale vehiclemountedinstrument
A complete automatic weighing instrument that is designed for a specific application and is securely mounted on the vehicle.
Note. For example, a garbage scale (waste collection vehicle) is used to determine the amount of bulk items that are poured into a vehicle body from a container (supported by a carrier).
3.1.3.5
Vehicle combination scale vehicleincorporatedinstrument
An instrument in which the vehicle and the weighing portion share the same components (lever, connecting piece, force converter, etc.).
Note. For example, a front loader (front loading vehicle) can determine the amount of bulk material in the bucket (carrier) when loading the bulk material.
3.1.4
Bulk material loosematerial
Materials that are not packaged during weighing or weighing. This material can be collected and placed on a carrier (such as a preload)
Weighing in a separate container (waste scale).
3.1.5
Equalizer gradinginstrument
The weighing result is assigned to a predetermined mass range to determine the scale of the price or rate.
For example, postal scales, garbage scales.
3.1.6
Electronic weighing instrument electronicinstrument
An instrument equipped with an electronic device.
3.1.7
Control scale controlinstrument
A standard measuring instrument used to determine the quality of the test for the scale of the test.
In the test, the control scale as a reference value can be.
--- Another independent weighing instrument separate from the instrument under test, called the separate control weighing instrument.
--- The test scale is used as a control scale, called the integrated control scale, which provides a static weighing mode.
3.1.8
(quantity) convention true value (ofaquantity)
For a given purpose, with appropriate uncertainty, given a certain amount of value, sometimes the value is agreed upon.
3.1.9
Legal authority
A representative body authorized by the national legal metrology department, a certification organization or a manufacturer that has passed the national quality system certification.
There is a duty to determine that the instrument meets all or some of the requirements of this standard.
3.1.10
Indicator indicating value of indicationsofaninstrument
The amount provided by the measuring instrument.
Note. “Indicative”, “Indication” or “Sign” includes both displayed and printed.
3.1.10.1
Main indication primaryindications
Indications, signals and symbols that meet the requirements of this standard.
3.1.10.2
Auxiliary indication secondaryindications
Indicators, signals, and symbols other than the primary indication.
3.1.11
Metrology related metrologicalyrelevant
Any device, module, component, device, function, or software of the instrument that is considered to be a weighing result or any other primary indication is considered to be
Measurement related.
3.2 Structure
Note. In this standard, the term “device” refers to any method of performing a particular function, regardless of its implementation mechanism. For example, through a mechanical device or a
A button initiates an operation; the device can be a small or major component of the scale.
3.2.1
Carrier loadreceptor
The weapon is used to carry the load on the part.
3.2.2
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.
3.2.3
Load measuring device load-measuringdevice
The weighing device is used for measuring by means of a balancing device (for balancing the force transmitted by the load transmitting device) and a pointing device or a printing device
Load quality parts.
3.2.4
Load conveyor loadconveyor
A device that feeds a load into or out of a carrier.
3.2.5
Load transfer system loadtransportsystem
A system for delivering loads to a carrier.
3.2.6
Display device (on the scale) displayingdevice(ofaweighinginstrument)
A device that provides a weighing result in a visual form.
3.2.7
Module module
An identifiable component used to perform one or more specific functions. This component can be based on the measurement and technical requirements in the relevant national standards.
Come to evaluate separately. The module of the instrument is subject to the specified local error limits of the instrument.
Typical scale modules are. load cells, weighing indicators, analog or digital data processing devices, weighing modules, terminals, remote displays
And so on.
3.2.7.1
Load cell loadcel
After considering the effects of gravity acceleration and air buoyancy on the ground, by converting the main measured value (mass) into another measured value (transmission)
The signal is used to measure the mass of the force sensor.
3.2.7.2
Weighing indicator indicator
The output signal of the symmetrical weight sensor can be converted from analog to digital and further processed. At the same time with quality
A weighing instrument that displays the weighing result for the unit. Formerly known as the weighing display controller.
3.2.7.3
Analog data processing device analogdataprocessingdevice
The output signal of the symmetrical weight sensor is converted from analog to digital, and the data is further processed. And no need to display
These data are, but a scale electronic device that provides a weighing result in digital format through a digital interface. It can carry one or more
Keys to operate the scale.
3.2.7.4
Digital data processing device digitaldataprocessingdevice
Further processing the data, and without the need to display the data, but through a digital interface to provide a balance of weighing results in digital format
Electronic device. It can carry one or more keys to operate the scale.
3.2.7.5
Weighing module weighingmodule
Includes all mechanical and electronic devices (eg, carriers, load transfer devices, load cells, and analog data processing devices), but does not require display
The part of the scale showing the weighing result. It can have multiple devices to further process (digital) data as well as operate the instrument.
3.2.7.6
Terminal
One or more keys to operate the scale and indicate the number by the weighing module or analog data processing device via a display
A digital device that weighs the results of the interface.
3.2.7.7
Digital display digitaldisplay
Can be embedded in a weighing indicator housing or in a computer terminal housing, or as a display with a separate housing (ie, without a button)
End), for example in combination with a weighing module.
3.2.7.8
software
3.2.7.8.1
Legal related parameters legalyrelevantparameter
It is a measuring instrument or equipment and meets the functional parameters specified and implemented by the legal system.
The types of legally relevant parameters can be divided into type specific parameters and device specific parameters.
3.2.7.8.2
Type specific parameter type-specificparameter
The value of the legally relevant parameter depends only on the type of the instrument. Type-specific parameters are part of the statutory related parameters, they are in the scale
The evaluation has been determined.
3.2.7.8.3
Device specific parameter device-specificparameter
A legally associated parameter with a value that is determined by the instrument associated with it. Device specific parameters include calibration parameters
(eg, range adjustment or other adjustments or corrections) and configuration parameters (eg, maximum capacity, minimum capacity, unit of measure, etc.). These parameters are only in balance
The device's specific operating mode is adjustable or selectable. Device specific parameters can be divided into two categories, one should be protected (not
Change); the other type is to allow authorized personnel to access the incoming (settable parameters).
3.2.7.8.4
Software identification softwareidentification
An easy-to-read software serial number and an inseparable correspondence with the software (such as version number, check code).
3.2.7.8.5
Data storage device datastoragedevice
The internal memory of the instrument or an external (removable) storage device for long-term storage of weighing data after weighing is completed.
3.2.7.8.6
Software segmentation softwareseparation
The statutory related software and the illegal related software can be clearly divided. If the software is not divided, the whole software is considered to be legal.
Off.
3.2.8
Electronic components
3.2.8.1
Electronic device electronicdevice
A device that uses electronic components to construct and perform or perform a particular function. It is usually a separate unit that can be accessed separately
Test.
Note. The electronic device as defined above may be a complete set of scales (such as a set of directly sold instruments), a module (such as a display, analog data office).
Device, weighing module) or a set of peripheral devices (such as printers, auxiliary displays).
3.2.8.2
Electronic component electronicsub-assembly
A portion of an electronic device that is comprised of electronic components and that has its own defined functional characteristics.
For example, an A/D converter, a display.
3.2.8.3
Electronic components
The smallest physical entity that conducts electricity using electrons or holes in a semiconductor, gas, or vacuum. For example, tubes, transistors, integrated circuits.
3.2.9
Weighing device indicating deviceofaweighinginstrument
The load measuring device component that displays the weighing result in mass units can also be additionally displayed.
--- the difference between the quality of the item and the standard value;
--- The average and/or standard deviation of a certain number of consecutive weighings.
3.2.9.1
Indicating device with differential scale indexing equipment receivingdevicewithadifferentiatedscaledivision
The last digit after the decimal point is a digital pointing device that is clearly distinguishable from other digits.
3.2.9.2
Extended indicating device extendedindicatingdevice
According to the manual command, the actual scale value (d) of the scale can be temporarily converted into a device smaller than the verification scale value (e).
3.2.10
assisting equipments
3.2.10.1
Setting device settingdevice
A device that sets the quality grouping limits.
3.2.10.2
Rated set point nominalsetpoint
The operator sets the preset value in units of mass by the setting device in order to establish the limit between consecutive groups.
3.2.10.3
Adjustment range adjustmentrange
A range of weight values close to the set point beyond which the relative error will be exceeded.
3.2.10.4
Counter counter
Means for counting the number of loads passing through the carrier (rotation counter) or means for indicating the number of loads in each packet
(grouping counter).
3.2.10.5
Sorting device sortingdevice
A device that automatically separates into multiple groups by the actual load of the item.
3.2.10.6
Leveling device levelingdevice
A device that adjusts the scale to its reference position.
3.2.10.7
Tilt limiting device tiltlimitingdevice
Prevents the scale from exceeding a predetermined slope value when it is running.
3.2.10.8
Zero setting device zero-settingdevice
A device that adjusts the value to zero when there is no load on the carrier.
3.2.10.8.1
Non-automatic zero setting device non-automaticzero-settingdevice
A device that can be zeroed by the operator by manual adjustment.
3.2.10.8.2
Semi-automatic zero-setting device semi-automaticzero-settingdevice
A device that automatically sets the value to zero after the operator gives a manual command.
3.2.10.8.3
Automatic zero setting device automaticzero-settingdevice
A device that automatically sets the indication to zero after weighing is completed without operator intervention.
3.2.10.8.4
Initial zeroing device initialzero-settingdevice
A device that automatically adjusts the indication to zero before the instrument is switched on and used.
3.2.10.9
Zero tracking device zero-trackingdevice
A device that automatically keeps the zero indication within a certain limit.
3.2.10.10
Tare device taredevice
A device that adjusts the value to zero when there is a load on the carrier.
--- does not change the weighing range of the payload (adding the tare device);
--- Reduce the weighing range of the payload (deducting the tare device).
it can be.
--- Non-automatic device (manually balance the tare load by the operator);
--- Semi-automatic device (the operator automatically balances the tare load after giving a manual command);
--- Automatic device (automatically balances the tare load without operator intervention).
3.2.10.10.1
Tare weight balancing device tarebalancingdevice
A device that does not display the tare value (3.3.2.3) when there is a load on the scale.
3.2.10.10.2
Tare weighing device tare-weighingdevice
A tare device that stores, displays, and prints tare values (3.3.2.3) regardless of the load on the scale.
3.2.10.10.3
Preset tare device presettaredevice
A device that subtracts the preset tare value (3.3.2.4.1) from the gross weight (3.3.2.1) or the net weight value (3.3.2.2) and displays the result of the calculation. net
The weighing range of the load is also reduced accordingly.
3.2.11
Dynamic setting dynamicsetting
In order to eliminate the adjustm...
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