Some standard content:
The People's Republic of China National Metrology Verification Regulations J3G9732602
Shock Measuring Instrument
Measuring lnstrument for Shcek2002-11-04 Issued
2003-02-04 Implementation
The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued JJG 973-2002
Verification Rcgubation of
Mcasuring InstrunentforShock
JJG 973-2002
This standard was approved by the General Administration of Quality Supervision, Inspection and Quarantine on November 4, 2002, and came into effect on September 4, 2003.
Original unit: National Technical Committee on Vibration Speed Metrology Main drafting unit: Beijing Institute of Metrology China Institute of Metrology
This regulation is under the responsibility of the National Technical Committee on Vibration Speed Metrology The main drafters of this regulation are:
Additional drafters:
JJG 973—2002
[China Institute of Metrology)
(Beijing Institute of Metrology)
(Beijing Institute of Metrology)
(China Institute of Metrology)
2! Literature
Measuring performance requirements:
4.1 Acceleration sensitivity
Acceleration indication error
Acceleration repeatability
Pulse duration minimum value error
Speed variation error
Acceleration amplitude linearity
Consistency
Dynamic range
Requirements for error generation
General technical requirements
Appearance and accessories
Technical standards to be provided by the manufacturer
Measurement instrument environmental suitability
Measurement instrument electromagnetic compatibility 5.5 Applicability of the power supply of the measuring instrument 6 Control of the measuring end tool 6.1 Type verification or prototype test JJG973--2002 6.2 Initial verification, subsequent verification and verification during use 6.3 Treatment of verification results 6.4 Verification cycle Verification certificate inner page format Appendix A Appendix B Verification result notification inner page format Appendix C Verification record (recommended) format (8) 1 Scope JJG 973—2002
Verification Procedure for Impact Measuring Instruments
This procedure is applicable to the type appraisal, prototype test, initial verification, subsequent verification and in-use inspection of Martin (10020000) m/s impact measuring instruments [hereinafter referred to as measuring instruments]. 2 References
Terms for Mechanical Vibration and Shock
GH/T2298—1991
Terms for Environmental Testing of Electrical Products
G15T2422—1495
R/T 2423.5—1995
GT 2423.6
CB/T 6587.1—1986
CB/T 6587.2—1986
GB/T 6587.3—1986
GB/T 6587.4—1986
CB/T 6587.5—1986
Environmental testing for electric and electronic products Part 2: Test methods, test 1'a and guidance: Shock
Electrical and electronic product tumbling test, Part 2: Test methods, test 1'a and guidance: Stir
Summary of environmental testing for electronic measuring instruments
Electrical measuring instruments
Electrical measuring instruments
Electrical measuring instruments
Temperature test
Temperature test
Vibration test
Electrical measuring instruments evaluation test
Electromagnetic compatibility test and measurement technology
GB/T17626.2—1998
Electrostatic immunity test
GE/T17626.3—1208
GB/T 17626.4-1908
Magnetic compatibility test and measurement technology
RF field refraction test
Electromagnetic compatibility test and measurement technology
Electromagnetic fast transient pulse group immunity test
Electromagnetic compatibility test and measurement technology
CB/T17626.5—1999
Surge (impact) immunity test
B17626.11-1999 Electromagnetic compatibility test and measurement technology Voltage drop, short-term voltage change and series voltage change immunity test J015-199)
General Specification for the Standardization of Accelerometers
JJ217219W) Accelerometers and Shock Meters, Instruments and Equipment Inspection System J497:21HKF Chain Control Test Bench Metrology Verification Procedure When using the procedure, please pay attention to the use of the current valid version of the above-mentioned references. 3 Overview
1 Shock measurement is mainly used to measure the impulse acceleration waveform and pulse duration. It is generally composed of sensors, signal conditioning, signal processing, retention and display parts. With the development of science and technology and the improvement of signal processing technology, the measurement of impulse acceleration waveform and pulse duration is mainly used to measure the impulse acceleration waveform and pulse duration. It is generally composed of sensors, signal conditioning, signal processing, retention and display parts. With the development of science and technology and the improvement of signal processing technology, the measurement of impulse acceleration waveform and pulse duration is mainly used to measure the impulse acceleration waveform and pulse duration. J73—2002
Many impact testers are composed of sensors, data acquisition devices and microcomputers equipped with relevant software: 4 Metrological performance requirements
4.1 Acceleration period
The uncertainty of the fitted acceleration sensitivity is 3% (-2). 4.2 Acceleration indication error
The acceleration indication error does not exceed 3%:
4.3 Acceleration continuous repeatability
The repeatability of acceleration measurement is 3%
4.4 Pulse duration indication error
The indication error of impulse duration does not exceed ±10%.: 4.5 Indication error of amplitude change
The indication error of amplitude change does not exceed +/-5. 4. Linearity of speed amplitude
The acceleration amplitude does not exceed ±10%. 4.7 Channel consistency
Channel consistency cap value difference does not exceed 0.3B, phase difference does not exceed 3°. 4.8 Dynamic range
Dynamic range should be greater than 45B.
4.9 Requirements for tolerance band generation
Impact measuring instrument tested by environmental test equipment: according to the measured pulse waveform, three nominal tolerance bands of half sine wave, trapezoidal liquid and post-peak key tooth wave should be generated according to relevant standards. 5 General technical requirements bZxz.net
5.1 Appearance and accessories
5.1.1 The measuring instrument should have a nameplate indicating the product name, specification model, manufacturer, factory date and number, and should be marked with the manufacturing equipment license mark and its number. 5.1.2 The measuring instrument should be complete, and each connector should be reliably connected and have a user manual. 5.1.3 All switches, signals and buttons should be functional, flexible and reliable to operate, and should have text symbols that are displayed on the display. The characters on the display should be clear and complete. When equipped with a printing device, the printed results should be clear and accurate. 5.2 Technical indicators that the manufacturer should provide: The manufacturer should provide the measuring range, bandwidth, high and low pass filter range, response time and display minimum holding time of the measuring instrument. 5.3 Environmental adaptability of the measuring instrument 5.3.1 Normal operating environment of the measuring instrument: Temperature: (10-40); Humidity: (20-90)%RH 5.3.2 Environmental adaptability test should be carried out or tested. 973—2002
The environmental test requirements for measuring instruments shall be in accordance with the requirements of Group 1 in GB/T658.1-1986: The environmental test requirements for measuring instruments with microcomputers shall be in accordance with Group 1 in GB/T6587.1-1986; The measuring instruments used on engineering sites and in the field shall be tested in accordance with Group 1 in GB/T6587.1-1986: 5.4 Electrical compatibility requirements for measuring instruments
The electromagnetic compatibility components of measuring equipment shall comply with the requirements of GB/T17626.2-1998, GB/T1762G.3-1998, GB/T17626.4-1998, CB/T17626.5-1998 and GB/T17626.11-1998. 5.5 Tester adaptability
The tester should work normally within the range of power supply variation. 6 Measuring instrument control
Measuring instrument control includes: finalization identification or detailed machine test, initial verification, subsequent verification and in-use inspection. 6.1 Finalization identification or prototype test
6.1.1 Type identification or prototype test shall be carried out in accordance with the requirements of General Specifications for the Qualification of Small and Medium-sized Instruments 1015-19.
6.1.2 Items of type identification and prototype test are shown in Table 1. 6.1.3 Methods of type identification and prototype test 6.1.3.1 Technical requirements 1 to 10 in Table 1 shall be tested in accordance with the methods specified in Article 6.2.2 of this Regulation.
6.1.3.2 Environmental adaptability test of measuring instrument
a) Temperature test
It shall be carried out in accordance with the method of GB/F6587.2-1986. 6) Humidity test
shall be carried out according to the method of GB/T6587.3-1986; 1) Vibration test
shall be carried out according to the method of CB/T6587.4-1986; 2) Impact test
shall be carried out according to the method of CB/T6587.S-1986; 3) Electromagnetic compatibility test
The electromagnetic compatibility test of the measuring instrument shall be carried out according to the methods of CB/T17626.2-1998, GB/T17626.3-1998, GB/17626.4-1998, B/T17626.5-1998 and GB/T17626.11-1998. 6.1.1 The format of the finalization appraisal or detailed machine test report shall be in accordance with the modified requirements of JJG1015-15 General Specification for Finalization of Measuring Instruments.
6.2 The purpose of the first verification and subsequent verification is to verify whether the performance of the newly produced measuring instrument meets the requirements specified in the type when it was approved. The purpose of subsequent calibration is to determine whether the performance of the measuring instrument meets the requirements of the specification after it has been used within the validity period since the last calibration. Subsequent calibration includes calibration within the validity period, calibration at a high temperature and calibration after repair. 3.I.IG: 9732M02 When the performance of the measuring instrument is greatly improved after repair and readjustment, its follow-up inspection is not required. The purpose of in-use inspection is to check the validity of the measuring mark or certificate. The status of the measuring instrument after calibration is when there is obvious change, error and allowable error during use. 6.2.1 Verification conditions
6.2.1.1 Damage conditions
[Temperature: (20-5); Condensation: 5% [
2) Power supply fluctuation exceeds rated value by 10% 3) The control is on-site strong power source, medium phosphorus power source and total gas and liquid. 6.2.1.2 Inspection equipment
1) Standard equipment: (1) 25000) m/%, such as fast expansion layer force 3: The charge release end has an integral function, and the single integral recognition coupon is 3%. 2) Digital waveform density:
Sampling frequency>25.6kHz
Accuracy: 1
3) Standard package: or 10p, accuracy is not more than ±1.1: 4) Stop signal generator: loss less than 0.3; frequency stability is excellent! Item: Position change integrity worry "1 ()
5 Dynamic signal branch: small value recognition error, spectrum amplitude display error is excellent 2 series; instrument two-way reading consistency is better than 1, phase: better than 6.? .2 Verification items Source
Type verification or group machine test, first reach verification, after cross verification and use less verification items see Table 1. Table 1 Verification items for type identification or sample test, initial verification, subsequent verification and user inspection Number Acceleration speed test Speed indication error Acceleration time test Speed change change Position error Variable value line Channel consistency Dynamic test Mixer test and subsequent verification User inspection Environmental suitability test Clinical test Table {Continued;
The effectiveness of the internal design
The improvement of the knowledge and practice must be related to the identification
6.2.2.1 Inspection of external and other parts
First test
The middle road is determined by the design.
The appearance, nameplate, connecting parts, etc. are tested to see if they are safe. The inspection results should meet the requirements of Article 31 of this regulation. 6.2.2.2 The acceleration is the upper and lower limits of the internal conditions of the selected dosage form. The upper and lower limits of the selected dosage form should be selected by comparing the test instruments with the standard device. For the selected test points, any impact pressure standard setting (hereinafter referred to as the unimpeded setting) with the same height, the continuous impact is at least 0, and the speed value of each time is divided into two parts. 4, and then verify the repeatability by performing calculation.
1) Repeatability verification:
Calculate the repeatability of the instrument according to the following formula:
Where: -·The acceleration is changed to the value. \; In
a series of half-mean values, m:
number of measurements per year, (n10)
must be the standard shell of the annual repeatability characterized by the accuracy of the standard, R.
Set the measurement at a point, and select the point with the difference as the verification result. 2 Repeatability verification:
According to the public () time, the same data of the impact standard is calculated, and the larger value is selected, then
Where:, V2
degrees of freedom, vi = r-1, - t--I:
Show the level of the test:
. (, v)—quantile of the test.
J3G973—2002
Formula (2) is correct, then the test is repeated reasonably, otherwise it should be repeated. Then test the two means:
fail + c
Ia, - al! Article: The integrity of the dynamic signal is better than 1 ()
5. The error rate of the problem is small, and the spectrum amplitude shows a good error of 2 series; the consistency of the instrument between the two channels is better than 1, and the phase consistency is better than 6. .2 Verification items: source verification
Starting type verification or group machine test, first verification, post-cross verification and use less verification. See Table 1 for the verification items. Table 1 Verification items for type identification or sample test, initial verification, subsequent verification and user inspection Number Acceleration speed test Speed indication error Acceleration time test Speed change change Position error Variable value line Channel consistency Dynamic test Mixer test and subsequent verification User inspection Environmental suitability test Clinical test Table {Continued;
The effectiveness of the internal design
The improvement of the knowledge and practice must be related to the identification
6.2.2.1 Inspection of external and other parts
First test
The middle road is determined by the design.
The appearance, nameplate, connecting parts, etc. are tested to see if they are safe. The inspection results should meet the requirements of Article 31 of this regulation. 6.2.2.2 The acceleration is the upper and lower limits of the internal conditions of the selected dosage form. The upper and lower limits of the selected dosage form should be selected by comparing the test instruments with the standard device. For the selected test points, any impact pressure standard setting (hereinafter referred to as the unimpeded setting) with the same height, the continuous impact is at least 0, and the speed value of each time is divided into two parts. 4, and then verify the repeatability by performing calculation.
1) Repeatability verification:
Calculate the repeatability of the instrument according to the following formula:
Where: -·The acceleration is changed to the value. \; In
a series of half-mean values, m:
number of measurements per year, (n10)
must be a standard that represents the repeatability of the standard, R. A repeatability.
Set the measurement at one point and select the point with the difference as the verification result. 2 Repeatability verification:
According to the public () interval, the data of the impact standard are calculated as, and the larger value is selected, then
Where:, V2
degrees of freedom, vi = r-1, - t--I:
Show the level of the test:
. (, v)—quantile of the test.
J3G973—2002
Formula (2) is correct, then the test is repeated reasonably, otherwise it should be repeated. Then test the two means:
fail + c
Ia, - al! Article: The integrity of the dynamic signal is better than 1 ()
5. The error rate of the problem is small, and the spectrum amplitude shows a good error of 2 series; the consistency of the instrument between the two channels is better than 1, and the phase consistency is better than 6. .2 Verification items: source verification
Starting type verification or group machine test, first verification, post-cross verification and use less verification. See Table 1 for the verification items. Table 1 Verification items for type identification or sample test, initial verification, subsequent verification and user inspection Number Acceleration speed test Speed indication error Acceleration time test Speed change change Position error Variable value line Channel consistency Dynamic test Mixer test and subsequent verification User inspection Environmental suitability test Clinical test Table {Continued;
The effectiveness of the internal design
The improvement of the knowledge and practice must be related to the identification
6.2.2.1 Inspection of external and other parts
First test
The middle road is determined by the design.
The appearance, nameplate, connecting parts, etc. are tested to see if they are safe. The inspection results should meet the requirements of Article 31 of this regulation. 6.2.2.2 The acceleration is the upper and lower limits of the internal conditions of the selected dosage form. The upper and lower limits of the selected dosage form should be selected by comparing the test instruments with the standard device. For the selected test points, any impact pressure standard setting (hereinafter referred to as the unimpeded setting) with the same height, the continuous impact is at least 0, and the speed value of each time is divided into two parts. 4, and then verify the repeatability by performing calculation.
1) Repeatability verification:
Calculate the repeatability of the instrument according to the following formula:
Where: -·The acceleration is changed to the value. \; In
a series of half-mean values, m:
number of measurements per year, (n10)
must be a standard that represents the repeatability of the standard, R. A repeatability.
Set the measurement at one point and select the point with the difference as the verification result. 2 Repeatability verification:
According to the public () interval, the data of the impact standard are calculated as, and the larger value is selected, then
Where:, V2
degrees of freedom, vi = r-1, - t--I:
Show the level of the test:
. (, v)—quantile of the test.
J3G973—2002
Formula (2) is correct, then the test is repeated reasonably, otherwise it should be repeated. Then test the two means:
fail + c
Ia, - al
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