Some standard content:
ILS 27. 120- 10
National Standard of the People's Republic of China
CB/T 9224—1998
neq1Ec295:1969
DC periodmeters
Published on 1998-12-17
Implemented on 1999-07-01
Published by the National Quality and Technical Supervision Bureau
GI/T 9224
Referenced Standards
Technical Requirements
Test Methods
Test Rules
Core Length, Packaging, Transportation, Storage
GB/T92241998
This standard is a revision of the B-188 DC cycle characteristics and two test methods. When revising this standard, the original intention of the 109th industrial standard was followed, and the standard name was changed to "DC cycle upgrade", and the content of the product was expanded. The content of /58-1501 DC cycle meter was incorporated into the small standard flow. Compared with the original standard, this standard has the following changes: 1. The standard name is changed to "DC cycle meter". 2. The content and structure of the standard are consistent with the requirements of GB1.3-1397 for product standards. On the basis of the original electrical characteristics and test methods, the focus is on adding performance requirements, environmental adaptability requirements and test methods, electrical safety requirements, special test methods and packaging requirements, etc. There are seven chapters in total, and the original standard safety characteristics, namely the test method and the test method for the logarithmic amplifier, have been cancelled. The time unit and cycle scoring chapters have been changed, and the original standard has been cancelled. 3. Support external language,
4. Add special long energy.
5. The term "DC cycle meter" in the original standard terminology according to IEC:205:1999 is changed to the definition of "weekly period" in GB/T4960.61996, and the definition of "DC cycle meter" is clarified. (The "dc cycle meter" in the original standard is "neutral" and included in the energy index, giving the product an output change within 2417. The rated working temperature in the original standard is 10 (~45 degrees Celsius. It is changed to 6~45 degrees Celsius in this standard. The rated working temperature in the original standard is 5~55 degrees Celsius. It is changed to -10C~55 degrees Celsius in this standard.
This standard is not equivalent to IEC295:195
This standard is difficult to be used with the following standards:
GB/T$S93-198 Weak Environment Components and Test method G1/T1027-1S85 Quality control specification for nuclear instruments and nuclear radiation detectors GB/116HM1-1S89 Electromagnetic interference characteristics and test methods for nuclear positioners EJ528-1998 General requirements for safety of nuclear instruments EJ/T1059-198 General technical requirements for the installation of nuclear receivers This standard replaces GR/T9224-1988 EJ/T57B-1991. This standard is issued by the Science and Technology Bureau of China National Nuclear Corporation, and this standard is issued by the National Nuclear Instrument Standardization Technical Committee. The originating unit of this standard is Beijing Nuclear Instrument Factory. Drafters of this standard Lv You, Luo Fengqun, Wang Lihua Scope
National Standard of the People's Republic of China
DC period meter
IC perimlmrters
GB/T 92241998
neq IEC 295:1969
replaces GE/T 92241983
This standard specifies the technical requirements, test methods, inspection contents, and marking, packaging, and transportation requirements for true current cycle meters for nuclear reaction measurement systems.
This standard contains the provisions included in the above standard. The referenced provisions in this standard constitute the provisions of this standard. This standard is published at the time of publication, and the versions shown are valid. All standards are subject to revision. Parties using this standard should discuss the possibility of using the latest versions of the following standards as soon as possible. GB/T85931198 Quality conditions and test methods for instruments GB/T1G257—FSR test rules for FSR equipment and auxiliary radiometers B 116811689 Reactor detector characteristics and specifications 528-1998 General safety requirements for nuclear instruments EJ/T105!--:938 General technical requirements for product packaging of nuclear instruments 3 Safety bZxz.net
This standard adopts the following definitions:
3. Period meter
An electronic device connected to the detector to indicate the reactor time. The period meter can be calibrated in units of the time required for the neutron rate to double, the dissolution time or the number of minutes. 3 Time
The time when the output signal reaches its final value for the first time after the input voltage changes according to the exponential rule is input. According to the technical requirements
4.1 Operating environment system
Market cycle meter's partner environment software
) Set the workpiece temperature; nC--45T:
Slow limit temperature principle, -1℃C65℃
) High humidity: $0X (40
Electric A2050H+2.5
4.2 Appearance and mechanical properties
Direct Piscometer's multiple viewing advantages a) The coating layer of the instrument surface shall be flat and free from defects such as rust, cracks and sizes. The National Quality and Technical Supervision Bureau 1998-12-77 standard 199-07-0 implementation
b) The surface of the drill bit shall be inspected;
) The main parts are:
4.3 Main output cycle:
4.3.1 Measuring range
CB/T 9224-1998
cycle: -505-11.【53 Network current is 10-10-1A, other standards may also be used according to requirements. 4.3.2 The static error
shall not exceed the full scale value.
433 time
When the initial current is -A, the shortest period: 15 hours, the response time is not more than 15 (the device itself is the response time) 4.3.4 "Li point \ corresponding period) swing
When the input current is compensated (for example 10-A), the output current shall not exceed 3 of the full value. 4.4 Environmental adaptability requirements
4.4.1 Low temperature
4.4.1.7 Fixed T. Low promotion
Test temperature 0 (+3 hours. Verify that the additional error does not exceed the full value 15% of the full value. 4.4.1.2 When the temperature limit is 1T, the DC meter can still work for a period of time: when the temperature is fast left to the rated value, the error meets the specified requirements: 4.4.2 4.4.2.1 When the test salinity is 45°C, the output additional error is less than the full value of ±10%. 4.4.2.2 When the temperature limit is 55°C, the DC meter can still work for a period of time: when the temperature is fast left to the rated value, the error meets the specified requirements, 4. 4.3 The relative degree of the test is 9% (40: ±2), and the output additional error is not allowed to exceed ±5% of the filter value. 4.4.4 When the power supply voltage changes within 187V~242V, the error of the product resistance is not more than 2% of the full value. 4.4.5 When the power supply frequency is within 47.5Hz-~2.51T, the error of the product resistance is not more than 2% of the rated value. 4.5 Under the condition of continuous operation for 24 hours, the additional error of the DC cycle meter is less than 2%. 4.6 The design and manufacture of the DC cycle meter of the enterprise shall comply with the relevant regulations of E538. Its electrical safety shall at least meet the requirements of 6.1 and 4.6.2. 1 Dielectric strength
Add a 150cV test voltage between the AC power supply box input and the machine. Maintain for 1 minute. No breakdown or puncture should occur during the test.
4.6.2 Dielectric strength
Use a 510V megohmmeter to measure the insulation voltage between the line oil and the machine. If it is greater than 7M4.7, perform the reverse current interference test. The synchronous meter can work. If necessary, press the operating voltage (at least 5) to conduct a systematic resistance test.
4.8 The packaging of the acoustic flow cycle meter should comply with the requirements of the protective packaging level A2B2C2DF of Chapter 4 of EJ/Ti0591998. The packaged GB/T 9224-- 1998
Lu Tong again after the public transport test, still meet the requirements of 4.2 and 4.3. 5 Test method
5.1Test equipment: 1) Low-noise flow meter: 2) Digital meter: 000Ω meter! You can record the service life.
5.2 Appearance and mechanical properties
The appearance and mechanical properties shall be checked by manual test and monitoring. The results shall meet the requirements of 4.2. 3. Preheating time
The positioner shall be preheated for a period of time before operation. The preheating time shall be specified by the manufacturer. 5.4 Technical indicators
When all the following measurements are made, a frequency converter shall be connected at the input end, and its capacity shall meet the requirements of each test. 5.4.1 Net error
The current shall be generated by a low noise current generator with a screening rate of not less than 1%. In the micro test, the calibration system is provided by this generator. Depending on the current 7, read the following exponential change: I, = fmexp(t/T.)
In the test, Im——initial current:
——time constant of the input signal.
can be calculated according to the following formula!
E,=(AV,/V)X10n%
In the formula, V—input terminal equivalent to the input current of the measured short-term value, the difference between the measured current value and the theoretical voltage at the output terminal V
and the output voltage corresponding to the product short-term value, the measured difference should meet the requirements of the static error in 4.3.2, 5.4.2 Response time
The exponential current of the formula (1) should be preset in advance at the start position of the specification, the initial good reverse "- will be the minimum) will be given to the power supply), and the number of times will increase naturally, for a period of ten T from T to 10T, record the time when the output signal reaches 9% of its final stable value, and the measurement results include the requirements of the response time in 4.3.3. 5.4.3 Reverse point swing
The current is output from the noiseless current generator. Under the specified input current, constant power supply voltage and constant environmental temperature, the peak value of the output signal is the difference V. The output voltage is calculated according to formula 7, F, =) × 10%
The test results shall comply with the provisions of 4.3.4.
5.5 Environmental adaptability
5.5.1 Low temperature
5 5. 1. 1 The new standard low temperature
test procedure is shown in Appendix A5.1 of C/8993-1993 (Standard Annex). At 0°C, the voltage is kept at 1.5, then powered on for 4 hours, and the voltage is output before the final measurement.
The test error caused by low humidity is;
G6/T 9224—1996
V = (V./VM? X Hx
Formula point,. One-case loss (section scale 20 What is the initial change of the electrical layer under the condition of killing the positive change. The test result should meet the requirements of 4.4.1.1: 5-5.1.2 Based on the limited low temperature
The melting temperature is -10℃. The test piece method and 3 conditions are phase-to-phase: The measurement result should meet the requirements of 4.4.1.2: 5. 5. 2 High according to
5. 5. 2. 1 Rated working high voltage test procedure is specified in Appendix B5.1 of G%/T8993-1998 standard. Store at 45℃ for 3.5 hours, then keep the voltage at the maximum 30 mic output voltage, the actual working voltage is set to (2F,/V) X 100%
formula, ≥V,-normal temperature storage (usually 20> the output voltage under the condition of the test piece and the change value of the input voltage under 4℃ conditions should comply with the provisions of 4.1.2.1, 5.5.2.2 limit working high alarm
limit temperature change to 557, the test method and 43: under the condition of the measurement channel can be measured in accordance with 1.4.2.2 about the provisions of 5.5.3
test procedure is GB/TES93--1998 Appendix [(Standard Appendix) L4. The temperature is low for 0.5h, the test duration is 4 days, in the last 3Um of the duration, the power supply is pre-pull and the reverse output voltage is high: the additional error caused by the degree is:
P. -. (aV./Vx) X 1CCs
Wherein:
The output voltage under the operating condition and the output voltage under the condition of 90°C (40°C) current shall comply with the provisions in 4.4.3. 5.5.4 Power supply voltage
The power supply voltage changes within a certain range and measures the change in output voltage. Ignoring its dynamic effect, the error caused by the power supply voltage is:
Vu=(AV./V) X 10%
Where: AK.
The maximum value of the output voltage change caused by the positive change of the power supply voltage, the measurement result should meet the requirements of 4.4.4.
5.5.5
The power supply voltage is constant, but the voltage must be changed within the range specified in 41. The change value of the output voltage is measured. The additional error caused by the frequency is
V-(V/V>×10%
In: 4V, the maximum value of the auxiliary output voltage change caused by the change of power supply frequency. The measurement results should meet the requirements of 4.1.4.5. When the conditions are not met, the new method can be used. 5.6 Determine the DC cycle meter. After the input current is pre-loaded, the low-noise current generator is output. Its quality is better than 1 standard. Under constant current, constant power supply voltage and constant environmental humidity, the change value of the output voltage in 21h can be measured with a variable speed recorder. The error caused by 24 hours of work is:
D, =(2Va/Vm) × 100%
In: 4V,--the maximum value of the output voltage ratio before 24h work. The measurement results should meet the requirements of 4.5.
5.7 Electrical safety test
GB/T 9224-1998
The electrical safety test of DC power meter shall be carried out in accordance with 5.7.15.7.2 and the relevant provisions of 5.7.1. 5.7.1. The test shall be carried out in accordance with the provisions of 523-1998/.5.4. The measurement result shall comply with the provisions of 4.6.1. 5.7.2. The insulation voltage test shall be carried out in accordance with the provisions of 4.6.2.2 of E528-1998. The shear result shall comply with the provisions of 4.6.2. 5.8. The electrical expansion test shall be carried out in accordance with the provisions of 6/11684---989. The measurement result shall comply with the provisions of 6/11684---989. 5. Packaging and transportation test
micro G8395--398 Appendix H H3.2.1 Production line highway transport test, theory and specification of Beijing 4.8 version 6 inspection specification
original pressure inspection office type inspection production factory inspection, its quick inspection memory, requirements and test methods core table 1, 6.1 type inspection
open inspection whole effect requirements need to connect 615/! 10257-208 4.1-28.1 when the intention is to carry out 6.2 pull-out test
when the factory inspection implementation and requirements of GB/T10357-198R4.1.1.8.2.8.5 and 12 are selected in full, the inspection items are group A, group B (see table)
risk inspection public group
long inspection design name
external integration and machine support manufacturing
Static error
grid point dynamic
stability
gas safety
teaching work certificate
risk work speed
rated working height
limited working height theft
electric voltage
power supply visual book
electromagnetic interference
necessary,
7 signs, packaging, transportation, storage
1.1 Marking
7. 1.1 Product marking
) Manufacturing name:
Production item.
Overall inspection
4. 4. 1. 1
4. 1. 1. 2
4- 1- 1
Registration
5- 4 1
5 5. 1. 1
5. 5. t. 2
5 5. 2. 1
5. 5. 3. 3
1) Trademark #
c) Product name:
) Product number:
e) Product number:
Manufacturing period
7.1.2 Packing mark
a) Product name,
6) Product plastic number:
) Destination or station
Mountain) Shipping unit:
e) Box number:
GB/T 9224—1998
) Body dimensions Length (mm) x Width (m) x Height (m) Net weight (g) h) Eggs (kg)
) Main outer packaging box shall be marked with "Be careful", "Ask", "Precision Instrument", "Rainproof", "Anti-traceability" and other words or pattern signs. 7.2 Packaging
For the packaging of F, see EI/T1055.
Provide the following documents:) 1 copy of product inspection certificate;
Product instruction manual;
c) 1 copy of packing slip;
7.3 Under the condition that the packaging is intact, it can be transported by car, train, airplane, wheel, etc. The straight-line periodometer should be stored in a dry and well-ventilated room free from strong heat, vibration, shock, electromagnetic field, corrosive gas, etc.
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