Working Dynamometer Calibration Regulation
JJG455—204 Core
Working Dynamometer Calibration Regulation
Yerificatinn Regulation of
Working Dynamunters
J.IG 455—2000
Generation Group: 4551986
.G 883-: This regulation has been approved by the National Quality Supervision and Inspection Commission on July 1, 1994, and will be implemented from April 15, 2000. Responsible unit: Hardness Measurement Technical Committee Main drafting unit: Shanghai Metrology Institute Participating drafting unit: Henan Testing Institute Kendao City Planning Testing Institute The reading authority is entrusted to the National Hardness Metrology Technical Committee for interpretation of this regulation Main drafters: Zhang Guiren (Hebei Metrology Testing Institute) Participating drafters: Cheng Xinxuan (Hebei Metrology Testing Institute) Xia Chuliang (Hebei Metrology Testing Institute) Wang Shuning (Shanghai Metrology Testing Institute) Nai Lin (Hebei Testing Institute) Fan Jia·
|3 Metrology performance requirements
3 .1 To determine the accuracy of the measurement by 1. Traceability of the performance 3.2 To determine the accuracy level by verification 4.3 Zero point maximum position performance 4.4 Resistance to stress 4.5 Appearance and other properties 5.3 Measurement data recording and verification of the verification institute and verification
5.3 The results of the station must be dealt with...
5.4 Control cycle
Appendix A Pump calibration certificate page format (12
Appendix B Calibration certificate page format (2)
Working dynamometer calibration record format
Scope
Working dynamometer calibration procedure
This regulation is suitable for square-shaped, machine-reduced tension gauges, test gauges, tension gauges , foreign parties, the first determination of the tension meter and other working dynamometers (hereinafter referred to as dynamometers) shall be carried out in accordance with the requirements of the relevant procedures.
Note: The force mentioned in this regulation is only for testing, not for energy, tension and time! Only: 2 Overview
The net force effect of the force measured is the original work. Its station configuration is limited, and it has a certain force point, force-bearing party and a signal indicating device. Xie Fang instrument is widely used in the measurement of bed force and tension: 3 Metrological performance requirements
3.1 The performance of the meter is determined by the upper limit of the measuring plate. The performance requirements are shown in Table 1
Table 1 The upper limit of the measurement is determined by the measuring knife. The specific technical indicators are improved)
8\(%FS)
5(%55)
Consideration points:
3-1000
three quarters talk;
show what difference:
:54:350
-building (according to the monthly Guangchang Road Mountain):
: every year, less
: not graded plan to promote the use of market:
2, to determine the industry age difference when the heart Jiang quantity parts can calculate the performance of the whole ratio
as a reliance Table 2: The accuracy and technical specifications of the dynamometers with the calibration indication period 1.D
Interval,
National certification:
Center position:
K·Responsibility
After assembly (reporting to the world):
Long-term, at least half a year, not less than half a year: foreign, not according to the principle of the source of the first priority. General technical requirements
4.1 Plate
Dynamometers should have nameplates, which should indicate the product name, model, specification, number, accuracy level, anatomical structure and specifications. When the dynamometer is a combination or each part is an independent product, it should have a corresponding nameplate and indicate the corresponding product, model, specification, end and manufacturing process, etc. Newly manufactured dynamometers should have a mark. 4.2 Accessories and parts The dynamometer and its accessories should be properly placed in a solid special box (box). The accessories should be complete and intact, and the zero point and the maximum azimuth deviation should be within the minimum value. The dynamometer should be equipped with a zero point (or as a learning point) adjustment function, and the adjustment range should be greater than the zero point change caused by the force of the accessories and the magnified change in the azimuth deviation caused by the working force. The dynamometer with zero adjustment can be given a certain working direction by the manufacturer, which is generally consistent with the force direction during calibration. The half-allowed use is not valid in the direction of width. The manufacturer generally gives the maximum stop point when the cutter is perpendicular to the calibration direction (or different from the calibration direction) for use. The deviation is 4.4 Additional functions
Other additional functions of the force measuring instrument, such as peak protection, danger indication, alarm arm, control retention, extraction, treatment and communication, etc., and its performance planning products meet the corresponding accuracy and other technical indicators. 4.5
External specifications and resistance performance
The relevant technical transfer characteristics of the newly manufactured dynamometer, such as the market atmosphere, "public full" and so on should meet the requirements of the supporting documents (such as relevant national standards, instructions, etc.), and the necessary instructions should be provided when submitting for inspection, and the inspection station should provide technical information such as reports. 1445
5 Control of measuring instruments
The control position of measuring instruments includes: initial inspection, subsequent inspection and inspection during use. 5.1 5.1.1 Verification conditions: a) The environmental conditions must meet the requirements of the specification; b) There should be no vibration, dense field or other factors that may affect the verification results during the verification; 5.1.3 Verification conditions: 1) Before verification of the dynamometer, preparations must be made according to the specification; h) The installation of the dynamometer must ensure that its force lines and force gauges are in line with the force lines of the force gauges; the upper and lower system pads of the dynamometer must have sufficient rigidity, the upper bearing pad must be flexible and the lower bearing pad must have positioning function;
There must be no tensile force. The two are used for extension and are relatively tight, and the connection should be flexible. ) The shape and size of the tension cable used in the calibration of the tension meter are specified in the instructions. The tension cable must be soft enough to meet the requirements of the force transmission strength. When the tension is zero, the tension caused by the force transmission point does not change much beyond its original value. Note: The value indicated by the tension meter is relatively accurate, and the change of the H point is not large under the measurement repeatability of 12.5 small 3 standard belt
According to the specifications of the test, it is divided into standard force transmission code, standard dynamometer, standard force measuring machine, material testing machine or standard machine for fire test. The force standard for calibrating the dynamometer shall have an accuracy level at least three times better than the accuracy level of the sensitive detection force standard. Table 3. Table of force measurement items for initial calibration, subsequent calibration and in-use calibration and adjustment items. 5.
Community area: 1
Your decision
Natural movement certificate
Report to the user
5.2.2 Verification method
Center) Chrome plate: Thank you for the inspection of dangerous equipment. Check the nameplate, accessories and installation of the dynamometer through daily measurement and media work. The results are in accordance with the technical requirements of 4.1 and 4.2. Record the relevant content of the nameplate and accessories. 5) Maximum zero point position deviation. Determine the maximum specific point position deviation of the dynamometer with limited zero adjustment function according to the following method. 1: Install the dynamometer so that its force line coincides with the axis line of the Asian force: the display point "or as the starting point of this point), apply standard force in the direction of the force (equivalent to 1% of the upper force limit value), record the indication of the dynamometer, then remove the standard force, collect the installation condition of the dynamometer so that the force line and the starting point are at an angle (angle), apply standard force for a certain number of times, and record the indication of the dynamometer to find the standard direction of the measuring point: the next formula is to calculate the direction of the measuring point: Zh18; -.-
Wherein: 7.(0)-First period, the dynamometer is subjected to the maximum point deviation when the axial effect and the gravity line are 9 degrees (or 180 degrees)
2) Install it so that the common force axis coincides with the center force radial line (or the starting point of the test), add standard force along the direction of the force, (the calculation value is on the right side of the dynamometer), record the dynamometer coefficient value, remove the standard force after adjustment, and change the dynamometer to its original state. The angle between the change line and the initial state is formed, and the dynamometer is applied again. After the smallest standard is applied, the maximum multi-point azimuth deviation of the dynamometer is calculated by the following formula: 2o(0)f.-:
or in: -90° (or 1°)
1 is the angle between the zero point and the zero point of the new bottom of the axis of gravity. 2. When the measuring function of the measuring element is changed, the measuring point of the empty case is measured in the resistance, and the two are determined as follows:
e) Graduation number, calculated by the following formula:
In the formula: w—measured product;
d—corresponding maximum scale position,
) Calculate the force according to the following formula:
In the formula: -Inspection point indication value -Discharge force:
10-Inspection point indication value
This indicator is generally calculated based on the lower limit of measurement. If the measurement is used as a variable, the measured section 2 is used as the result of the station.
e) Control of indication of standard force
1) The lower limit of measurement is the calibration starting point, and the other calibration points are generally taken as 20% of the upper limit of measurement: In each measuring range, at least 5 points shall be calibrated for the force measuring instrument, and the points shall be uniformly distributed, such as 20%, 40%, 100% and so on of the upper limit of measurement: Only when the dynamometer with multiple ranges has the calibration points determined separately, some of the adjacent calibration points shall overlap. The width of the measuring tool joint is divided into seven sections with a limit of 1/5\ (1, 2, 3) and then the fixed points are determined respectively. The minimum standard point is allowed to be less than 5 points:
: This process will reduce the force of the force meter by 10% of the limit. It is for the force meter 1447
2) Turn the dynamometer to work relatively smoothly, and indicate the starting point (or the zero point). The test hall recommends increasing the standard force value at the point where the force axis changes, and keep each calibration point stable. After the upper limit is exceeded, the standard force value is removed from the remote point, and the calibration point remains stable. After the calibration, the corresponding four-stage calibration is carried out. The calibration process is carried out for 10 consecutive times. Before each calibration, the indicating device should be set to zero (as the starting point of the cost): the first calibration is completed, the standard force value is removed, and the two 30-meter scales are cleaned up. The national zero point of the measuring instrument is calculated. 3) The only meaningful technical measure for force measurement is to use the following formulas for calculation:
[email protected]National zero value
Selection range indication
Return range indication
Intersection value error
Representation
Long-term stability
2,(%) :
E(x,-xu).1,2,n
1(x, - X0) 1 -1.2.m
E×110%
8(%H9)=2
X, - F:
Www.bzxZ.netXmms = Xrein × 100%
-Xm100%
X=X×100%
H（%股）
×100%
KiL-X.×100%
The dynamometer's equal point indications before Baida calibration and after removing the standard force are respectively for the upper and lower limit values of the dynamometer;
Under the action of the standard force F:, the progress indication and return indication of the dynamometer's first and second calibration points are respectively for the standard force after calibration F:, and ... x.
XimaxXarin
In the standard force ratio, under the action of 3 times of heavy & measured values and record the small indication value; the last time the book was given the process of the first point of the small value, Jiang: the pressure bidirectional working measurement and collection of the two-stage control system, F) thanks and the side can, the effect of its parts can be checked in the requirements of Article 4.4 and Article 4.5. Generally, it is checked during the fixed adjustment and prototype test: 1448
Verification tool processing
If the dynamometer is qualified after the test, a certificate will be issued. If it is unqualified, a notice of the test result will be issued. 5.4 The validity period of the dynamometer certificate shall be 1 year at most. The dynamometer that has been verified for the last time, newly produced or has passed the test of the adjustment piece shall be given a valid period. Appendix A Format of the inner page of the test certificate [1
(When the dynamometer is evaluated in units other than force, the unit of verification result shall be used:
5, 1%
You need to bring this with you for the next inspection
In the center position
The first method is to determine
1. Take the money as the basis for practice, time
, the position of the force or the limit of the case is not correct, with the maximum-
Appendix B Verification Certificate Page Format [2
(When the minimum value of the measuring instrument is a single value for female letter inspection) Verification results
F The next time you should bring this with you
The regulations of the position of the intended customer
Relative to the main||t t||1.Think of it as online, mid-term heart
2.Only the person who sits on the force and the object is right, heart,
A9-15mr
Test force
Address, telephone
Company number
Violation of strict instructions
Source inspection and certification
Ice offline
Appendix Work pay dynamometer calibration record format
Small Yue recognize and the most complex
Condition new use management system
No. safety certificate structure indication4 The validity period of the dynamometer calibration certificate shall be determined as follows: 1. The maximum validity period shall be 1 year. In particular, the dynamometer that has been certified for the last time, newly produced, or has passed the adjustment test shall be given a validity period of 5 years. Appendix A Format of the inner page of the calibration certificate [1
(When the dynamometer is evaluated in units other than force, the calibration result shall be used as the indicator:
5, 1%
This shall be brought to the next calibration.
1. Based on money as the reference, the time
, the measurement position is within the force or the limit, and the maximum value is specified-
Appendix B Format of the inner page of the calibration certificate [2
(When the minimum value of the dynamometer is a single value) Calibration result
F This time, you should bring the regulations of the user's position relative to the main one. 1. It is online, medium-term center. 2. Only the person who sits on the force and the object is correct, center, A9-15mr, test force, address, telephone number, company number, place of violation, strict indication, source inspection and certification, offline, appendix, work remuneration instrument calibration record format, small Yue recognition and the most complex, new use system, safety certificate number, structure indication4 The validity period of the dynamometer calibration certificate shall be determined as follows: 1. The maximum validity period shall be 1 year. In particular, the dynamometer that has been certified for the last time, newly produced, or has passed the adjustment test shall be given a validity period of 5 years. Appendix A Format of the inner page of the calibration certificate [1
(When the dynamometer is evaluated in units other than force, the calibration result shall be used as the indicator:
5, 1%
This shall be brought to the next calibration.
1. Based on money as the reference, the time
, the measurement position is within the force or the limit, and the maximum value is specified-
Appendix B Format of the inner page of the calibration certificate [2
(When the minimum value of the dynamometer is a single value) Calibration result
F This time, you should bring the regulations of the user's position relative to the main one. 1. It is online, medium-term center. 2. Only the person who sits on the force and the object is correct, center, A9-15mr, test force, address, telephone number, company number, place of violation, strict indication, source inspection and certification, offline, appendix, work remuneration instrument calibration record format, small Yue recognize and the most complex, new use system, safety certificate number, structure indication
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