SJ 20241-1993 Verification Procedure for YG Series Turns Meters SJ20241-1993 Standard download decompression password: www.bzxz.net

Military Standard of Electronic Industry of the People's Republic of China FL0150
SJ20241:-93
YG series coil number tester
Verification regulation
Verification regulation of YG seriesCoil number tester
1993—02--09 Issued
China Electronics Industry Corporation
1993—05—01 Implementation
Military Standard of Electronic Industry of the People's Republic of China Series Coil Number Tester
Verification regulation of YG seriescoil number tester
1 Scope
1.1 Subject Content
SJ20241—93
This verification regulation specifies the verification conditions, verification items, verification methods, verification result processing and verification cycle of YG series coil number tester. 1.2 Applicable scope
This verification procedure applies to the verification of YG series trace counters. In principle, it also applies to the verification of other series trace counters, but the inner diameter of the standard coil needs to be changed. 2 Reference documents
No clause in this chapter.
3 Definition
No clause in this chapter.
4 General requirements
China Electronics Industry Corporation
1993-02-09 Issued 1993-05-01 Implementation 1
TYKAONKACa-
SJ28241—93
4.1 Purpose and principle of the inspected measuring instruments
According to the different structures and characteristics, G series trace counters can be divided into two categories: ring needle balancer type (hereinafter referred to as pointer type, such as YG2, YG3) and digital display direct reading type (hereinafter referred to as digital type, such as YG4a). Its main purpose is to measure the number of turns of the coil. YG2 and YG3 also have the function of measuring the short circuit of the coil. 4.2 Technical requirements
4.2.1 Turns measurement part
a. The measurement range and accuracy are shown in Table 1. Table 1
Measurement range
Accuracy
121110
+0.5+1 digits
YGS-2 YG5-3YGS—4
The pointer type has four adjustable reading knobs, namely n×1, n×10, n×100μ×1000 (n is an integer from 0 to 10). YG4a has a range and magnification key switch, and continuous display.
b. The sensitivity of the turns measurement is shown in Table 2. Table 2
YG2/1YG2/2
Rate of change of mutual number
2 grids or more 1 grid or more! 1 grid or more: 2 grids or more 1 grid or more! 1 grid or more 4.2.2 Short circuit measurement part
Short circuit measurement only checks the sensitivity of the set, and the parameters are shown in Table 3. 2
Number of short circuit rings
Drainage ring diameter
Short circuit ring wire diameter
Pointer rotation
SJ20241--93
Grids or more % grids or more
4.2.3 Insulation resistance
YGS—3
Insulation resistance between power input terminal and shell:>7M0.4.3 Verification conditions
4.3.1 Environmental conditions
a. Ambient temperature: 20±5C;
b. Relative humidity: 45%～75%;
e. Atmospheric pressure: 86~106kPa;
d, Power supply: 220V=2%.50Hz±1%: Yes-4
e. Surrounding environment: There should be no ferromagnetic material and strong alternating electromagnetic field within 0.5m around the test arm.
4.3.2 Calibration equipment
4.3.2.1 Variable turns calibration instrument
Variable range of turns: 1~11110 turns:
Accuracy: ±0.1%;
Reference model: KB/1.
4.3.2.2 Short-circuit ring (two)
Short-circuit ring diameter 20mm and 10mm, wire diameter 0.1mm. 4.3.2.3 Insulation resistance tester
TTTKAONKAca-
S12021—93
Resistance: 500M, voltage: 500V: accuracy: ±1%. Reference model: ZC-7 megohmmeter.
5 Detailed requirements
5.1 Verification items and verification methods
5.1.1 Appearance and normal working inspection
5.1.1.1 The inspected instrument shall be accompanied by the product technical manual and necessary accessories. If it is not the first verification, the previous verification certificate shall be attached. 5.1.1.2 The inspected instrument shall be free of mechanical damage that affects normal operation and electrical performance. 5.1.1.3 Power-on inspection
Pointer type turn counters should be able to perform electrical zero adjustment; digital turn counters should use standard coils to calibrate full scale, and allow ±1 digit to jump. 5.1.1.4 Sensitivity inspection (pointer type)
a. Inspection of digital measurement sensitivity
Connect the instrument as shown below.
Calibrator
Connect the power supply, preheat for 15 minutes, adjust the sensitivity switch to the maximum, set the selector switch to the first gear, set the reading knob of the instrument under test to 1000, adjust the reading knob of the calibrator to make the scale zero, and then change the reading knob of the calibrator (or the instrument under test) by ±1 turn. The number of deflections of the balancer pointer should meet the specified value in Table A1 of Appendix A, and the indicated value should be recorded in Table A1 of Appendix A.
b. Check the short-circuit measurement sensitivity
Select the instrument to be tested and switch it to the "short circuit" position, insert the short-circuit meter and fix it tightly. Adjust the "short circuit zero adjustment" so that the balance pointer points to the middle zero position. Then put the standard short-circuit ring into the root of the measuring core of the 4
SJ20241--93
short-circuit meter. The number of grids deflected to the right by the balancer pointer should meet the specified value in Table 3, and the indicated value should be recorded in Appendix A Table A1. 5.1.2 Verification of turn accuracy
5.1.2.1 Verification of pointer turns meter
Connect the instrument according to 5.1.1, 4a.
a Selector switch is adjusted to the In the first gear, the four reading knobs of the instrument under test change the number of turns from 0 to 10 (9). At the same time, change the reading knob of the calibrator accordingly to make it balanced, and record the readings of the four reading knobs of the calibrator in Table A1 of Appendix A. b. Adjust the selector switch to the second gear, and the single 10,000 turns of the calibrator. The four reading knobs of the instrument are all set to \0\. At this time, the reading of the instrument under test is 10,000 turns. Adjust the reading knob of the calibrator to make it balanced, and record the reading of the calibrator in Table A1 of Appendix A. The accuracy is calculated according to the following formula. bzxZ.net
8=ex100%
Where: Tx——the value of the instrument under test (turns), To—the value of the calibration instrument (turns).
5.1.2.2 Verification of digital turns counter
Connect the instrument according to 5.1.1.4a.
Angle, calibration of the instrument under test
Turn on the power supply, preheat for 15 minutes, first perform full-scale calibration, put the standard coil 1900 original (or 2000 turns) attached to the instrument into the root of the test, press 2K "Key, adjust the "correction" knob, so that the display screen shows 1900 (or 2000). Remove the standard coil and then put the calibrator into the test root.
b. ×1\ gear, 1~1000 turns accuracy verification Press the *200\ and \2K" keys respectively, and adjust the four reading knobs of the calibrator. From 1~1000 plaque conversion function. Make the instrument under test display n×1, n×10, n×100 (n=1~10 positive integers) respectively. Record the calibrator readings in Appendix A Table A2. c×10\ gear, 1000~10000 turns accuracy verification 5
TTTKAONTKAca-
SJ20241-93
Press the \2K key, adjust the calibration instrument reading knob, so that the instrument under test displays n×100 (n=1~1.0 positive integer), and then multiply the displayed value by 10, which is the actual value, and record the calibrator indication in Appendix A Table A2.
d. Extended range difficult accuracy verification
Press the *2K\ and ×2” keys to improve the resolution, adjust the calibration reading knob, so that the instrument under test displays n×100 (n-1~10) and then multiply the displayed value by 2. That is the actual value,Record the calibrator indication in Appendix A Table A2. Press the \20K\ and \×2\ keys to calibrate the first 5 points. (Due to the range limitation of the calibrator, check the accuracy of the extended "×2\ and "×10" key combination functions. Adjust the calibrator reading knob to directly read n×100 (n=15). Multiply the displayed value by 20 and record the data in Appendix A Table A2
Accuracy is calculated according to the previous formula, and the calculation result is recorded in Appendix A Table A2. 5.1.2.3 Insulation resistance inspection
Inspect the insulation resistance between the power input terminal and the shell. The two wires of the power input terminal are short-circuited: connected to the "L" terminal of the megohmmeter, and the shell is connected to the "E" terminal. Shake the megohmmeter handle to measure, and record its indicated value in Appendix A Table A1. 5.2 Verification result processing and verification cycle
5.2.1 The qualified YG series function meter shall be issued with a verification certificate; the unqualified one shall be issued with a verification result. Notice, and note the unqualified items. 5.2.2 The calibration cycle is one year, and it can be sent for inspection at any time if necessary. 6
Single 100 coins
SJ20241-—93
Appendix A
Calibration record form format
(Supplement)
(Pressure)
Plate measurement sensitivity deflection
Short circuit measurement sensitivity deflection
Power supply to shell insulation
Vacuum meter calibration
(%)(Pressure)
【%) (Distance]
×100m
（%）
TTKAONKACa-
Conclusion:
Additional remarks:
SJ20241—93
YG4a type pressure gauge calibration
×10 files
(Jiangshuishuishuishuishui)
Shou×2
Yongpeiqing
《Blue Water）
This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standard Promotion and Research Institute. This standard was drafted by the State-owned No. 906 Factory. The main drafter of this standard is Lin Sen.
Project code: 075—1~47.
(Centimeter water meter)
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.