This standard specifies the verification items, verification instruments, number and placement of measuring points, verification steps and data processing involved in the periodic verification of corrosion gas test equipment. This standard is applicable to the periodic verification of test equipment used in GB/T 2423.19 "Basic Environmental Test Procedures for Electric and Electronic Products Test Kc: Sulfur Dioxide Test Method for Contact Points and Connectors" and GB/T 2423.20 "Basic Environmental Test Procedures for Electric and Electronic Products Test Kd: Hydrogen Sulfide Test Method for Contact Points and Connectors". This standard is also applicable to the periodic verification of similar test equipment. GB/T 5170.11-1996 Basic Parameter Verification Methods for Environmental Test Equipment for Electric and Electronic Products Corrosion Gas Test Equipment GB/T5170.11-1996 Standard Download Decompression Password: www.bzxz.net

1Cs19.040
National Standard of the People's Republic of China
GB/T 5170.11-1996
Environmental testing equipment for electric and electronic products
Basic parameters verification methods
Corrosive gas testing equipment
Inspection nethods for hasic parametersof environmental testing eyuipmentsfor electric and electronic products-Corrosive gas testing equipments1996-12-13 Issued
National Technical Supervision
1997-11-01 Implementation
CB/T5170.11—1996
This standard is one of the basic verification methods for environmental testing equipment for electric and electronic products. This standard is revised by combining GB3170.:1—85 and GB17C-2:-8=. Compared with the 1985 standard, the following changes have been made in the technical content: 1. It is not clear that the standard is used for the same pressure test during the use period. 2. The accuracy index of the sealing system is recommended; 3. The number of measurement points and the normal position of the large-scale test equipment are recommended to be measured with the instrument: 4. The test is carried out under the conditions of average load, etc. If there is space or you want to indicate: 5. The relative limit of the error can be taken before the test equipment is stable, 6. The total time for the error and relative high error verification is 24h, 1h, and the measurement time is 24h. The temperature, concentration of the cabinet and the corrosion gas concentration point error are included, and the calculation method is increased. This standard replaces B>170.11-65.5170,1235 from the date of implementation. The Ministry of Industry and Information Technology proposed this standard. This standard was drafted by the National Technical Standards Committee of Electrical and Electronic Products, and the Ministry of Industry and Information Technology of ... eyuipnienisGB/T5170.11—1955
Generation (RSL7E.12-8
(:K517.1)—83
This standard specifies the calibration items involved in the periodic calibration of two-gas test equipment, such as daily and monthly identification of quantity points and release positions, calibration steps and data processing, etc. This standard is applicable to GB/2423.19 Basic environmental test specifications for electric and electronic products Kc: Test method for contact points and connectors GB/T2433.2 Individual environmental test procedures for electric and electronic products Kd: Test for diffusion defects and connection stops The test method for fluidized hydrogen is used to test the equipment for various periodic control. This standard is also applicable to the test equipment of the same type. 2 Referenced standards
The following referenced standards contain the following referenced texts. The referenced texts shall be valid when the technical standards are published. All standards may be revised. The parties using this standard shall discuss the possibility of using the latest technical standards. GB/T5170.1=395 General rules for environmental testing and verification of various performance of electrical and electronic products B/T2423.1 Basic test procedures for electrical and electronic products Test Ke: Contact point random connection replacement parts test method CB/T 2423.20 Basic environmental general test procedures for electrical and electronic products Test Kx: Change of contact point and connection damage test method B7T2424-1
GR/T 2424. 12
Basic environmental inspection procedures for electronic products, guidelines for oxidation test of separation points and connecting parts, and guidelines for oxidation test of separation points and connecting parts. G&-Liu Jin's calculation tables
3 Verification items
The verification items include:
Temperature quality error
Relative sensitivity deviation:
Gas level fluctuation difference:
Gas level relative filtration degree
Matching,
Single Hao Technical Supervision Bureau, 1996-12-13, 1997-11-01
4 Main instruments and requirements
4.1 Temperature measuring instrument
GA/T 517011 :1996
Ping use the known electric service. Thermoelectric or other temperature sensor can measure the instrument scheme, the system with a certain value of ±3.2, the aldehyde sensor, the constant is not more than 21s,
4.2 Relatively short measurement of this instrument
using the creation of electric drop, the effective value or its zero-value sensor needs to be composed of a dry ball cabinet for humidity instruments. The accuracy of the wet bulb leakage meter is 4 1.
4.3 The gas concentration measurement base receiver
If the accuracy is less than 55, the gas concentration measurement can only be carried out by chemical analysis: 4.4 The network speed measurement Yue road
is not greater than: the wind bay measurement receiver. 4.5 The measurement and the night data
are not lower than the accuracy of the illumination measurement type. 5. Inspection cases
The equipment should meet the requirements of the climate system, power supply conditions, water supply conditions and other system components during the inspection. 1/>170.1 The first inspection should meet the requirements of the other related components. 8. 6. Number and location of measuring points
6.1 The equipment under inspection should be located in the upper, middle and lower floors. The upper, middle and lower floors should be designated as the upper, middle and lower floors. The humidity sensors and air outlets of the equipment should be located in the specified positions. The temperature measuring points are shown in U, AB, C, D, K, JMV. The measurement points for humidity measurement are DL, D, and 6.2. The equipment area is small or the average temperature is 2m. The temperature measurement point is 9. The corresponding points must be 3. The layout is as follows: 5.3 According to the design and test requirements, the measurement base of the whole working space can be increased to 7.2 GB/T 5170.11--1996
6.4 When the average relative strength of the test points and the placement of the test points are moved, the test frame shall be set at any point within the range of the inner and outer double-sided test points. When the mixing test is stopped, the measurement points shall be measured and the temperature difference shall be clearly stated. 6.5 According to the number of measurement points and the placement of the measurement points, the maximum and minimum points of the strength in the upper working space shall be used as the measurement points. 7 Verification steps
7. 1. The test point shall be in accordance with the provisions of Section 6 of this standard. 2. The test load shall be placed under the load. If the sensor is placed or the sample is collected, it is not possible to insert the test load. If the test is allowed to be carried out in the air, it must be noted in the report. 7.3. Temperature deviation, sample to sample difference. Nominal temperature value: Tx-25C. Difference value: 2C. Nominal humidity value, H, = 75%, The correct difference is ± %. When the indication point shortness and relative humidity all reach the nominal value, the correct value is ± 0.01, and the humidity chart can be measured once every 2 minutes at the specified point, for a total of 15 measurements. The double recorder: According to the good quality of the cold investment, the specified blade can be lifted, and the 7.4 evaporation gas concentration is tested and the nominal concentration of the waste gas is determined by the relative humidity ratio of the carbon dioxide to the nominal concentration of the waste gas. The correct difference is ± 0.01 (volume). The standard record of the dilute oxygen is 2.5 × 1C- ( The difference is: name × 1 (volume ratio). After the temperature and relative thickness of the test equipment have reached the nominal value, the gas (tri-sulfur or hydrogen sulfide) is passed and the nominal value is reached. Then the gas concentration value is measured at the specified point every 1 m for a total of times. And record it. 7.5 Gas level calibration
7.5.1 When moving the sample, one of the two methods can be selected for measurement: one is to use the test equipment as a reference point.The test sample rack is used to determine the appropriate distance and sequence time for the reference point. The relative speed within a movement cycle is measured. 75.2 When the test method is used, the wind speed at each point along the random direction is measured, and the measured value is used as the wind speed of the system. 7.6 According to the change, the working limit value and the minimum value are measured. Data processing and verification results are obtained. According to GB696, the relevant temperature value is found. 2. The temperature difference is calculated according to the following formula,
A. - T-T.
formula. Hu delivers the difference,
under.... temperature deviation.
is the actual high temperature value of each measuring point within 30min, CTn is the actual low temperature value of each measuring point within 30aial, T is the nominal temperature value, C.
8.3 Relative temperature error is calculated according to the formula:
CB/T 5170.11-1996
Hu - H..
Afr...aH...-H.www.bzxz.net
--relative upper limit difference, approximately
AHmn--relative humidity change lowering value, %;
H.--the highest and relative filterability values ​​measured at each measuring point within 30min, and finally Hmr..--the relative humidity value achieved at the measuring point within 30min, %H--nominal relative humidity value.%.
8. The temperature difference between gas and liquid is calculated according to the following formula: C
Gmu Ch
aC = CG
wherein, the upper deviation value of the corrosive gas, ×\\ (volume ratio): ACre
the lower deviation value of the corrosive gas concentration, ×: 5-(parts volume ratio)! ..-the effective high corrosive gas concentration value within 1 hour at the measuring point, ×1G-(car plate ratio) ri-the lowest actual corrosive gas concentration value at each measuring point in 1 hour, ×1c-(volume ratio) nominal rate value, ×10" (elevation ratio). 8.5 The average relative velocity of the airflow is calculated by the following formula:
the average sweep speed of a product, m/
the distance determined by a point moving in one cycle, :
the time required for a point to move in one cycle,. t3)
-（4)
8.6 The test results shall comply with the requirements of GB/T2121.19, GB/T2423.20, GB/T2-34.11 and GB/2424.12 for temperature, relative humidity, corrosion gas distribution, gas washing level and relative humidity, and illumination.
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