GB/T 5170.2-1996 Basic parameter verification methods for environmental test equipment for electrical and electronic products Temperature test equipment
Some standard content:
ECS19.U80
National Standard of the People's Republic of China
GB/T 5170.21996
Environmental testing equipment for electric and electronic products
Basic parameters verification methods
Temperature testing equipment
Inspection mcthods for basic parametersnf environmcntal testing equipmentsfor electric and electronic productsTemperature testing equipments1996-06-17Published
1997-07-01Implementation
State Bureau of Technical Supervision
GB/TE179.2--1956
This standard is one of the series of standards for basic parameters determination methods of environmental testing equipment for electric and electronic products. This standard is composed of 5170.285 Basic verification method for product environmental test equipment of China Industrial City, G179.3--859 Electrical product environmental test equipment (170.485 Electronic product environmental test equipment basic verification method for equipment maintenance and maintenance of optical source test equipment), and is revised and completed. This standard is different from the standard issued in 1985, and the technical inspection personnel in this standard have changed. Applicable to the environmental test equipment during the whole use period of the same measurement and inspection, in order to distinguish the product of the disk test questions - the "standard chapter" was trained;
in the pull item, it fell into the "work level loss worker Xu room temperature learning \ printing \ worker your indoor villa vehicle time coefficient" two "items: - in the "calibration of the main instrument \ one to, the broadcast width of the receiver is given; one has added the "calibration conditions" rate;
about the loss training point list: no equipment working space cellar area to three m" The demarcation line is "collected as \ with it\ demarcation line, for "greater than 2r road modification", the measurement and wind ball passing or point mountain 21 points are reduced to 15 points: during the inspection test equipment, "the lake time of temperature deviation is shortened to UmiT: in the \ data processing course", the calculation formula of "bird bias" is given in the \ inspection situation set selection \, the calculation method of \ benefit field word integral value and equipment instrument miserable value is increased, and the necessary instructions for qualified (limited use) are given: || tt ||The appendix of the standard gives the stability method and calculation formula of the general dynamic and rotational speed! The test table of the ground is as follows:
B series standard 517G electrical T electrical 1 product environmental test equipment basic number to do according to the standard operation 3 series standard including the following parts: GB/T5170.1 electrical product environmental test equipment basic verification methods for most products; temperature test equipment!
Electrical product environmental test equipment basic parameters verification methods - GB/T 5:1. 2
Heart electrical product area general test equipment basic parameters verification methods GH/T 5I70.1
-GB/T173.3 Electrical and electronic products environmental test equipment basic parameters verification method must be unified thermal test equipment!
Salt test equipment:
B/T5175.9 Electrical and electronic products environmental certification equipment quantity verification method solar radiation test equipment;
High and low pressure test equipment;
-(H517U.[Electronic product pressure test equipment basic parameters determination method GB/517C, 11 Electrical and electronic products environmental test equipment station rate verification method two corrosion product test equipment
This is full from This standard is proposed by the Electronic Industry of the People's Republic of China. This standard is drafted by the Standardization Research Institute of the Ministry of Electronics Industry. The Ministry of Electronics Industry leads the five research institutes and six standard drafters: Fu Wenxiao, Xie Jianhua, Chen Xuejin, 1 Yan Jianghanghuo 1 Scope
National Standard of the People's Republic of China
Electrical and electronic products environmental test equipment
Basic parameters verification method
Temperature test equipment
[nspection 1.1，This standard covers the temperature (including temperature change), calibration items, calibration requirements, calibration parts, measurement points, calibration rules and calibration results of the test equipment during the periodic inspection. 1.2 This standard is applicable to G2423.1-89 Basic environmental test procedures for electrical products: Low temperature test method 3, GB423.2-894 Environmental test procedures for electrical products: High temperature test method 2 and B2423.22-876 Environmental test procedures for electronic products: Value change test 3 Periodic verification of equipment, this standard is applicable to the fixed period verification of Class X equipment. 2 References
The following standards contain multiple texts, which are referred to in this standard as the text of this standard. When the standard is published, the latest version is valid. All standards will be screened and the latest versions of the listed standards will be used to verify the portability of the equipment. CB/T5:70.1—1995 General rules for basic test equipment for electric and electronic products (iH2423.1-89 Basic environmental test procedures for electric and electronic products Test A: Low temperature test method GB2121.2—89 Product environmental test procedures Test B: High temperature test method GH2423.22-B7 Electric 1 Information·Guangdong Basic Environmental Test Procedure Test N, Temperature Change Test Method 3 Verification Items
Standard specified items,
Temperature difference
Humidity average change speed ( Applicable to test equipment with temperature change requirements): speed: (applicable to high-pass test equipment): recovery time (applicable to rapid temperature change test equipment with specified conversion time). 4 Main instruments and requirements for verification 4.1 Wet and wet instruments Use platinum, thermoelectric or other similar temperature measuring elements and two fast instrument groups: The measuring system of the sensor is not approved by the State Technical Supervision Bureau in 1996-0E-1. 799(-07-07) is valid. GB/T 517G.21996
is greater than 21, the accuracy of the temperature excitation system is not more than 1 ± 1.2. 4.2 The salt hot salt only device
is used for various types of salt measurement, and the accuracy of the degree of measurement system is not more than 1%. 4. For the wind connection group to the instrument
, the induction effect is not required. 1.05m, 5 calibration parts
5.1 The equipment is in the reading period of the bag source conditions, the water conditions are rented by other related parts or G1T70-1-1 99 Article 4, 5.2 The external test conditions of the equipment should be good, including GB/T517C.1--1995 Article 4: E The number and location of the measuring points
E-1 Based on the size of the test equipment, the working space is divided into three layers: upper, middle and lower. A certain number of temperature and humidity and wind speed sensors are placed on the specified conditions. The sensors should avoid direct radiation from cold and heat sources. The temperature measurement points are represented by the letters O, AB, C, D, E, F, GI, and K ,,M,NU represent the relative design of the product as a whole. The number and position of the wind speed measuring point and the humidity measuring point can be completely consistent. The measuring point is located at the center of the working space of the equipment. The vertical distance of other measuring points and the whole equipment is 1/10 of the length of each side of the working room. When there is no air duct, it refers to the distance between the air supply outlet and the same air outlet. The maximum distance cannot be greater than mm. If the equipment is equipped with a sample rack or a sample cart, the effective point is at the center above the sample rack or the sample cart.||tt ||62 When the volume is less than or equal to m, the number of temperature measurement points is 1, the relative humidity measurement point is 1, and the effective position is shown in Figure 1. 1.r2
6.3 The volume of the equipment is
2m2, the number of temperature measurement points is 15, the relative humidity measurement point is 1, and the layout is shown in Figure 2. hs
6.4 When the test equipment volume is less than Cn or greater than 5m2, the number of temperature measurement points can be appropriately reduced or increased: 6.5 According to the needs of the test and verification, the number of measurement points can be set in each workshop. 6.6 For the following long-term test equipment, the number of measurement points can be reported or reported to the third party for confirmation. 7 Verification steps
7.1 Effective energy sensor
GB/T5170.21996
According to the city research program No. 6 city requirements to assess the teaching quantity of the total medicine transmission equipment city enterprise equipment working interval determination section science 1. Continuous layer order length 7.7 An condensation load
According to 5.1 first? Install the load as required by the regulations of this chapter, place the sensor source in the suburbs, and when the meter load cannot be installed, the meter should be charged with the normal load. However, it should be noted in the test report: 13. The test temperature standard is within the test range, and the test temperature is not required. GB2423.1 and GB2423.2 require a representative temperature rating. The test temperature can be selected from the following temperature ranges: low temperature - -40-25, 10℃, 5%, commercial temperature -30C, +40C. +55C. +C. +85C. +15C. 125C. +155C. +17FC12C, etc. According to the test and inspection requirements, other nominal values can also be selected. 7.4.1 Adjust the temperature of the test chamber to the required standard temperature. 7.4.2 Lower or raise the test equipment to the working space expansion point to achieve the so-called installation setting 2 (or to the test equipment's physical stability state).
7.4.3 Measure the temperature at each point. According to the type of measuring instrument, the measurement can be continuous, intermittent, selective, or sequential. Record the temperature of each point every 2 mis. Measure 15 times in a total of 30 mins. 7.4.4 For equipment in normal use and under repair, the measurement time should be no less than 3). For equipment used after installation and during new installation, measure once every 32 m, then measure once every 3 m. Record the temperature at 24:1 according to Appendix A:
1 The average temperature change rate will be as follows:
7.5.1 Measure the new temperature indicating point specified as the source. 15.2 Adjust the temperature control data of the test equipment to the required standard temperature. 7.5.3 Cool down the test equipment. During the temperature rise and fall operation, measure the normal temperature value every 5 mm. 7.6 Verification operation
7.6.1 The measuring point is set as the index point of the equipment. 7.6.2 The rated nominal temperature is 35°C.
7.6.3 The test equipment is controlled by the GC. 7.6.4 The second working space indicator point is set to 35°C for 2h (or the specified state of the test equipment). 6.5 The measuring point is set to the index point of the equipment. The measurement is carried out in 2rtir. Operation times, a total of 3 measurements, 7.7 Verification steps
7.7.1 The measuring point is set as the index point of the equipment. 7. Set the humidity controllers of the high humidity and low temperature equipment to the required nominal temperature respectively. 7.7.3 The high-temperature equipment and new products that need to be upgraded and monitored shall be monitored and standardized and set at 2 or the test equipment's self-stable makeup intention shall be achieved) so that the new equipment can be tested and the new storage capacity can be measured and recorded: 7.7.4 The temperature sense value before and after the indication point shall be compared with that before the indication point. The load must be sufficient. 7.7-5 The high-temperature equipment shall be loaded according to the relevant standards and the corresponding transfer time shall be selected. After the load is transferred to the high-temperature equipment, the equipment shall be charged and recorded in the micro-guide. The temperature of the indicating point shall be recorded, and then the load shall be transferred from the high-temperature equipment to the high-temperature equipment in the same way. Temperature equipment conversion, pay attention to the total temperature,
7.75 minutes measurement with the change of the negative load I (low exposure equipment conversion to bias period: the temperature > equipment after the lake flow point into the station average state of the price standard add the capital of the share version of the time. The temperature recovery time under the calibration temperature is the equipment flow calibration temperature: 7.8 wind speed calibration step crack
Place the wind meter head at each measuring point, along the arbitrary direction of the speed. Take the maximum straight as the deceleration of the measuring point. B data processing and calibration results
8.1 data processing
8- 1.1 Data Correction
GD/T 5170.2-1996
For all recorded measurements, corrections should be made according to the correction of the measurement system. 8.1.2 Deviation Calculation Method
When the equipment is in a certain state, the difference between the measured high and low temperatures of the working space measuring point and the upper and lower temperature of the standard temperature is the temperature compensation difference of the equipment at the nominal temperature. The calculation formula is as follows: AT'n. =Thu-Th
AT=T-TA
Formula one deviation;
one temperature difference,;
1...-the maximum temperature value measured at the external point within 50 mil (or 24h), T%-the lowest temperature value of each measuring point within 3℃mia (or 34h), :. Standard temperature value.
: In a given process and time, if the dynamic torsion and risk of the inspection group are guaranteed, the value determination method is used for transmission. 3.1.3 Temperature averaging rate calculation method
The temperature change rate calculation formula is as follows, V, = 1AT|/5
Wherein, V, temperature change rate, /ut: temperature change compensation in 5min,
8.1.4 Calculation method of relative humidity value
Calculate the arithmetic average of three measurements as the relative humidity of the equipment at 39 o'clock. 8.1.5 Velocity measurement method
The calculation formula of wind speed theory is as follows,
Wherein: --- The relative humidity method of the equipment is used in the design, /5u,
Wind speed at each measuring point/%
Number of measuring points.
White. 1. 6 Data processing results
The data processing results must meet the requirements of B2423.1, GB2122.2 and G2423.22 or relevant standards for temperature difference, average change rate, relative humidity, network speed and temperature information time. 8.2 Handling during the calibration process
8.2.1 Adjustment of the humidity monitoring field of the test equipment
8.2.1.1 During the calibration process, if it is found that the temperature of the equipment working space exceeds the allowable deviation, it is necessary to check whether the temperature field is far from the nominal value. If it is far from the nominal value, the equipment temperature field should be adjusted. 82.1.2 The calculation formula for adjusting the humidity field is as follows: T, =T, -TN
T..-(T...+Tw.?/2
Ratio, <2—temperature adjustment value, ℃.
—mud density field median, C
-—nominal return value, ℃
GB/T5370.2—1995
T—the highest actual temperature value within 3\ of each measuring point, center Tmia—the lowest actual temperature value of the product within 30rrin of each measuring point, center, 8.2.1.3 The temperature field adjustment value should generally not exceed the temperature tolerance allowable 8.2.2 Correction of test instruments 8.2-2.1 During the test, if it is found that there is a fixed difference between the indication of the equipment and the set base temperature indicating instrument, and this difference is greater than the set allowable deviation, the instrument shall be corrected appropriately. 8.2.2-2 Peak correction calculation formula is as follows:
In the formula: - set short-term correction, center T. Effective monitoring field, center ||t t||T: The equipment temperature indication meter is within aCumin and is not too average, C (check once every 2min). 2.2.3 The correction value of the equipment temperature indication meter should not exceed the temperature programming allowable value, and it can be noted in the case. 8.3 Verification results
831 The equipment that has been inspected should be issued a verification certificate and a certificate of conformity. 8.32 Equipment that has failed the inspection should be issued a "Verification Result Notice" and posted with a "certificate of use". 8.3.3 When the individual measurement points and individual temperature points of the inspected equipment are If the verification results cannot meet the key points of technical indicators, the working space of each device shall be appropriately reduced. In the working space and corresponding temperature range after input, all technical indicators shall be met. The verification results shall be limited to the specified range when the specified range is specified. Equipment model: Equipment model: Factory number: Production environment: Institute of Technology, according to the professional discipline, the construction cost, network quality points, industry quality assurance, C0/517C.2-1996
Appendix A
(Prompt recording)
Gold record expression display
Temperature measurement record form
Setting:
Appendix B
"Prompt recording
Temperature fluctuation, temperature uniformity verification method Wu Le
Standard value,
System number:
Connection route
Service table stop position:bzxz.net
Specification first period:
Safety inspector,
The limit effective point is the equipment indication point, the temperature comparison measurement quantity and position and the product thickness error machine: 12 steps
Thank you for the temperature breaking and temperature uniformity The correct determination is out of the temperature deviation problem. The number of increase needs and the meter
will be adjusted when the meter is broken, and the meter temperature fluctuation and comfort. 3: Temperature fluctuation meter formula:
= t (h T,2
temperature shop fluctuation, T:
T-the equipment indicating point in the black test stock service value... The receiver indicating point in the wm measured minimum temperature value. .2 Temperature comfort meter formula:
one product makeup, heart
Cu/T 5170.21995
Tm-the measured high temperature value of each test point in the first! Yin Xun, T-the measured minimum retreat or value in the first state measurement,
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.