JJG 669-2003 Load Cell Verification Procedure JJG669-2003 Standard download decompression password: www.bzxz.net
This procedure is applicable to the finalization and identification, prototype test, initial verification and subsequent verification of load cells.

The People's Republic of China National Order Verification Regulation JJG 669--2003
Load Cell
2003-05-12 Issued
2003-11-12 Implementation
The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China issued JJ:669--2U03
Verification Regulation ot
Load Cell
JIG669—2003
Replaces JJG 669--1990
DLR(20
This regulation has been approved by the State Quality Supervision, Inspection and Quarantine Administration on May 12, 2003 and will be implemented on November 12, 2003.
Author: National Force and Hardness Metrology Technical Committee Main reform unit: The Third Institute of Aviation Industry Corporation, China National Institute of Metrology
Additional drafting unit: The First Institute of Aviation Industry Corporation, Changchun Chunfeng Sensor Factory
This regulation is entrusted to Jin Guo Force and Hardness The Metrology Technical Committee is responsible for interpreting this regulation. The main drafters are: Jiao Qirui Li Qingzhong Participating drafters: Li Tingyuan JJC669-2003 (The 3rd and 4th Research Institute of China Aerospace Industry Corporation) (China Academy of Design Sciences) (The 34th Research Institute of China Aerospace Industry Corporation) (Changchun Chunfeng Sensor Research Institute) (The 12th Research Institute of China Aerospace Industry Corporation) 1 2.1 General technical terms 2.2 Measuring characteristics of weighing sensors 2.4 Measuring errors 2.5 Conditions affecting the measurement 3 Basic units 4 Metrological requirements 4.1 Principles of weighing sensor classification 4.2 Standard classification 4.3 Maximum calibration divisions of weighing sensors 4.4 Minimum calibration divisions of weighing sensors 4.5 Supplementary classification 4.6 Classification of complete weighing sensors 4.5 Representation of information 5 Maximum permissible error of the sensor group 3IG 669- -2003
Maximum permissible error for each accuracy level
5.2 Principles for determining the error
5.3 Permissible variation of the measurement result
5.4 Repeatability error
Influence
5.6 Measuring base focus
6 Requirements for weighing sensors equipped with electronic circuits6.1 General requirements
Display interference loss processing
6.3 Functional requirements
6.4 Additional tests
7 Instrument control
7.1 Type identification (station prototype test)
7.2 II verification and follow-up verification
7.3 Verification result processing
7.4 Verification cycle
Appendix A Type identification [or prototype test] and related verification test methods (
JJC669—2003
Appendix B Type approval (or prototype test) Example of selecting test documents Appendix C Test report format
Appendix 15 Test report form Www.bzxZ.net
Verification certificate, verification result notice (internal) format Appendix
Terminology
J.IG669—2003
Verification procedures for weighing sensors
This regulation is equivalent to 2001 International Standard RG (2000)el-Weighing Sensor Gauge (2000 Edition). Its type identification requirements, test methods and test report formats are the same as those of the standard. According to the requirements of our metrology standards, the content of measuring instrument control has been added. 1 Specification
1.1 This regulation is also used for the type identification (or prototype test), initial calibration and subsequent calibration of weighing sensors (hereinafter referred to as sensors).
".2 And the main static performance and static performance determination methods of the weighing sensor used for measurement: This regulation is to provide the metrology department with a method to determine the performance of the sensor used in the controlled equipment. 1.3 This regulation takes several types of sensor errors into consideration: the allowable error envelope is used to characterize the characteristics of the sensor. In other words, it does not meet the given characteristics [such as nonlinearity, bandgap, etc.! By stipulating the corresponding error limits of each day, and considering the entire allowable error envelope rate as the limit factor, the concept of the error envelope enables us to obtain new results while being able to balance the contribution of each to the entire measurement error: the error can be defined as the maximum or minimum error. Therefore, the error can be determined due to the uniqueness of the measurement (quantity). The error can be determined by the sensor, and the temperature can be affected by the structure
1.4 and the quality indicator is given. Instruments are not included in the scope of this specification: 2 Terms and definitions
The most commonly used terms in the field of sensors are given below without definition (see 2.6 for illustrations of certain definitions). The terms used in this paragraph are consistent with the internationally accepted metrological terms and legal vocabulary. To facilitate the application of the regulations, the following relevant definitions are given: To help find the corresponding definitions, the index of all defined terms is published as a separate table at the end of this specification. 2.1 Common terms
2.1.7 Applied load (aplcation of load) 2.1.1.1 Tensile loading (tensile loading) applied to the sensor,
2.1.1.2 Tensile tension (lens unlubricating) applied to the sensor.
2.1.2 Weighing sensor (loudce)
Consider the use of filters to take into account the influence of force acceleration and air buoyancy, and convert the measured quantity into another signal to be measured and monitored. 2.1.3 Sensor equipped with electronic wire lnail:ell rquippel with ilrclromin:x) Use the sensor component that can identify the function of the level of the core component. 1IG669—2003
Electrical components with examples: -N junction, amplifier, encoder, A/D converter, IO connection, etc. (do not give way to color components, etc.!
2.1.3.1 Electronic component (rla: imnic romnmrnt) The smallest physical object that uses electrons or holes to conduct electricity in semiconductors, gases or vacuums. 2.1.4 Performance test (jeitmmanretest) A test to prove whether the sensor can achieve its expected performance. ?.2 More called sensor group metrological characteristics
3.2. "Difficult to determine the level (acurary rlass) The level of sensors subject to the same humidity conditions 2.2.2 Humidity symbol (huttuirlilysymbol) is the symbol specified for sensors that have been tested under the specified humidity conditions: 2.2.3 Sensor family (loalcell 1.1.2.2.3.1 Sensor group (lwudllgrup) The sensor group (lwudllgrup) is a group of sensors with the following characteristics: same material or the same material combination (for example: mild steel, stainless steel or aluminum); same measuring technology (for example: strain gauge attached to metal); same structure (such as: shape, strain gauge package, installation method, manufacturing method); same electrical characteristics (such as: rated output, input resistance, supply voltage, cable); + one or more sensors.
Treatment: It should not be limited to examples. 2.2.3.1 Sensor group (lwudllgrup) All sensors in a family with the same comparative characteristics (for example: level, maximum calibration value of the sensor, temperature, etc.,
2.3 Range, quantity and output
2.3.1 Sensor scale value (lol ecll) 2.3.2 Sensor measurement range (luualcellmcasurirrange) The measurement result does not exceed the maximum allowable error (mPc) of the measured value (2.4.9). 2.3.3 Transducer output (lllop) The sensor converts the energy (quality) into measurable value. 2.3.4: Sensor verification graduation value (laad cell velocity int crval) is used in the sensor accuracy classification test, and the sensor graduation value in mass units is used: 2.3.5 Maximum scale (muaximumcapacity) is applied to the sensor, and does not exceed the maximum allowable error [pe] of the maximum mass (mass) value; 2.3.6 Normal load (nuxinurnioudofhumeuriuugo) is the maximum mass (mass) value applied to the sensor during the test or use, which should not be greater than the state (see 2.3.5), and the test requirement for the limit value of 0 is shown in 4.3.2.4 2.3.7 Sensor maximum verification graduation (m) is the maximum verification graduation (m) divided into two parts so that the sensor measurement range does not exceed the maximum allowable error (mpe) of the measurement range (see 2.4.9) 6M9—2003
23.8 Minimum static error (E) (minimumlondrillverificatiunintrrval) The minimum mass value that can be applied to the sensor without exceeding the maximum allowable error. (See 2.4.9) 2.3.9 Minimum load recovery (DR) intmdudloduutpulrelun The difference between the minimum static load output measured before and after the load is applied. 2.3.J0 Sensor or minimum verification value (minimumlondrillverificatiunintrrval) The minimum verification value (mass) of the sensor measuring the range. 2.3.11 Minimum load (miniaumlondorthes ucauringrungr) The minimum amount (mass value) applied to the sensor during the test (which should not be less than ... [see 2.3.8]. The limit value of D.. during the test is E, see 4.3.2.4 2.3.12 Sensor verification value (r) (numher nf load cell 2.3.13 Relative minimum dead load box output recovery (IR) or Z [rlalive DR arZ) The ratio of the maximum load E to the minimum dead load output (DR) of the two trains. This ratio is used to indicate the multi-division value. 2.3.14 Adhesion to wmin F
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