Some standard content:
1cS25.060.20
Machinery Industry Standard of the People's Republic of China
JB/T10038-1999
Electronic Level Meter
Published on 1999-05-20
National Bureau of Machinery Industry
Implementation on 2000-01-01
JE/T10038—1999
This standard is revised on the basis of ZR42027—88 Electronic Level Meter. This standard is consistent with the technical proposal of ZBJ42027—88, and has only been re-edited according to relevant regulations. This standard replaces ZDJ42027—B from the date of implementation. Both appendices A and B of this standard are standard appendices. This standard is proposed and approved by the Technical Committee for Standardization of Electronic Level Meters. This standard is responsible for the unit: 1 Hai Level Factory, this standard was first issued in 198.
1 Scope
Chinese People's Machinery Industry Standard
Electronic Level
Electronlclevel meter
JB/T E0038-1999
This standard specifies the types, types and dimensions, basic parameters, technical requirements, inspection methods, marking and packaging of electronic levels. This standard is applicable to pointer-type electronic level meters and digital display electronic level meters (hereinafter referred to as special instruments) Reference Standards
The following standards and regulations are used together: The provisions of this standard are generally cited in this standard. When this standard is published, the versions shown are all valid. All versions are subject to revision. Customers using this standard should explore the possibility of using the latest versions of the following standards. GB/14879--1985
G/r 5045-1485bzxz.net
GB/T63881986
JE/T 9329--J999
3. Definitions
This standard group adopts the following definitions.
3.1 Test method for basic environmental conditions of instruments and meters for transport and storage, which has a self-supporting base, and uses a capacitance pendulum to measure the balance of the measured surface relative to the water surface at a small angle. Among them, the device with a pointer-type indication device is called a pointer-type electronic level, and the instrument with a digital limit indication device is called a digital display electronic level.
3.2 A device for adjusting the zero position of the instrument when it is at the limit position of the measurement, so as to make a different range measurement at this level.
3.3 A device for adjusting the instrument to the absolute zero position or relative zero position. 4 Product varieties, types, dimensions and basic teaching data 4.1 According to the indication form, it is divided into two categories: pointer-type electronic level and digital display electronic level. See Figure [. Approved by the State Administration of Machinery Industry on May 20, 1999, 2000-01-01 Implementation
Indicator type electric level
4.2 Graduation value shall comply with the following provisions:
JB/T10038—1999
Quantity extension switch
Source switch
Electric music indicating switch
Must be self-waterproof
Seven ohm zero installation
Figure 1:
Electric technical level
Digital display electric level
0.00lmm/m;0.0025mm/m;0.005mm/m;0.01mmm:0.02 mm/m:0.05mm/m4.3 The range of the measuring dial of the digital display instrument shall not be less than one-tenth of the maximum digital change of the instrument. 4.4 Structural type and size of the measuring instrument The measuring instrument consists of three parts: sensor, indicator (or display) and base [this part can be separate type, Figure 2; it can be integrated, as shown in Figure
The base is separated from the bottom of the workpiece. See Figure 3 and Table 1
Product indicator
Figure 2 separate type
5 Technical requirements
5.1 Instrument 1 Working conditions Parts
The effector is operated at 15-2sC.
5.2 Appearance
JB/T10038-1599
Figure 3 Bottom working surface size
V-shaped 1 mesh angle
120° or 150°
5.1.1 The working surface of the instrument shall not have sand holes, pores, cracks, bumps, scratches, roughness, rust and other defects caused by abnormal use; the non-working surface exposed to the operation shall not have air rise, sand, digital effects, rapid corrosion and other obvious defects. 5.2.2 The electrical layer of the instrument shall be uniform and smooth. Only the spraying of the instrument The instrument shall be smooth and free from defects such as detachment, spots, scratches and uneven color that affect the appearance quality.
5.2.3 All scales, numbers and marks of the instrument shall be smooth, and the connection lines and connectors between the sensor and the indicator (or display) shall be intact and workable.
5.2.4 The color of the plastic shell and the surface of the instrument shall be uniform and smooth, and there shall be no defects such as air pools and cracks. 5.3 When the sensor group of the instrument is uniformly tilted, the indicator group (or display) shall be able to change smoothly and reliably. 5.3.1 The zero position device and the expansion and contraction device of the instrument shall be stable and workable. 5.4 Requirements for parts
5.4.1 The surface roughness R value of the grinding surface of the instrument shall not be greater than 0.4μm. 5.4.2 The working contact points of the scraping instrument shall not be less than 25 points within the range of 25mm×25mm. 5.5 The tolerances of the flatness of the working surface, the parallelism of the east T working surface and the V-shaped working surface, and the verticality of the bottom working surface and the side working surface are as shown in Table 2: 5.6
Test items
Parallelism of the bottom working surface and the V-shaped working surface
Planarity of the actual working surface and other working surfaces
A self-leveling device with side working surface is used for this inspection: JHT10038-1999
Pointer-type electronic water meter
Effective digital display electronic water meter
When the adjacent inclination of the instrument is less than 5°, when working on the same measuring surface, the indication error shall comply with the provisions of this standard. The technical basis of the equipment shall comply with the specifications of Table 3. Table 3
Indicator quality
World process desert
Sensitivity
Secret setting
Indicator tube variability
Consistency of each range level
Test number and tax setting time
Instrument name
Type of water device
Is it or is it an instrument
In the exhibition process device
Pointer type electric level
Political display type electric level
Pointer type hair level
Effective display type electric level
Indicator type electronic water meter
Digital display type water meter
Pointer type electronic water meter
Effective display type electric level
Pointer type electronic water meter
Effective display type electric level
Pointer type electronic Level
Digital display electronic level
1 division value
Full scale:4=|+measurement integral|×2%[number11
full scale x1%
1 division gain
one number
2 numbers
1:5 division gain
1 division loss value
4 effective/4h:1 number right
5 numbers 4h;
.3 numbers h.
1/5 division value
=1 number
172 division value
=1 effective
division value
day) Digital display electronic level does not include configuration errors. The maximum allowable error is 1 number. 2) The number refers to the small unit of measurement of the corresponding device. e.005
5. If the working depth is less than 180HB, JB/T1003B—1999
S.9 Only the device should be subjected to commercial temperature test, low temperature test and continuous impact test under transportation packaging conditions. 6 Marking, packaging, transportation and storage
6.1 The instrument should be marked with:
a) Manufacturer's name or registered trademark:
b) Instrument name and model:
Serial number of the instrument:
) Manufacturer of the instrument,
6.2 The sensor should be marked with:
a) Manufacturer's name or registered trademark:
b) Instrument name and model:
e) Serial number:
d) Year and month of manufacture.
6.3 The transportation and packaging of the instrument should comply with the requirements of GBT4879, GB/5048 and GB/16368. 6.4 The instrument shall be accompanied by a product certificate and original product instructions. The product certificate shall be marked with the standard number and product serial number of this standard. 6.5 The instrument shall be properly packaged and assembled in accordance with the requirements of [B9329]. 6. The color library of the instrument should be T-ye, the color and kymetre should be moderate, and it should be checked regularly. A1 Inspection test
JB10038-1999
Title A
[Appendix of the standard]
Verification method
Each instrument should be calibrated according to 5.2~5.7 of the technical requirements, and can leave the factory only after passing the test. A2 Type test
2. In addition to the inspection test of the enterprise department, the following tests should be carried out according to the provisions of 58 and 5.9: a) Instrument working hardness test: b) High temperature test +
c) Low humidity test: d) Continuous impact test.
A1.2 Type test shall be carried out in the following cases: a) New product finalization; b) When the design, structure, workmanship and materials used in the finalized product are not sufficient to cause performance changes, all or part of the items of type test shall be carried out; c) Product excellence, grade assessment, quality supervision and performance inspection. A2.3 Three specimens for type test shall be drawn from qualified products. If any item in the test does not meet the requirements of the standard, two specimens related to non-compliant products shall be drawn out from the qualified products for test and more relevant items shall be tested. a) If one item still does not meet the requirements of this standard after repeated tests, the type test fails. b) If the repeated tests are qualified, the original sample volume is supplemented and the remaining items are tested continuously. c) If any item still does not meet the requirements of the standard after continued tests, the type test fails. The continuous tests are qualified, and except for the samples that failed the first test, the rest can be tested. A3 Test conditions
The test conditions include:
a) The foundation of the device under test should be solid and should not be affected by vibrations. b) The indoor temperature of the test instrument is 20±2%. c) The device under test is kept at the same temperature in the room for no less than 2 hours. d. The relative noise level is not greater than 15%.
A4 Inspection items, inspection methods and inspection tools The inspection items, inspection methods and inspection tools are shown in Table A. 6
Upper work surface roughness
[. What is the surface fitting point
Flatness
Parallel connection of working surface
Bottom working surface State working surface
Verticality of surface
Display position difference
Use comparison method
JB/T[0038—1999
Use color trace method
Use inch larger than working surface The length of the working surface is 0, and the blade edge is at the zero position on the diagonal position and the center direction of the inspection plane respectively. Observe the light rate and size. When the light gap ratio does not exceed the standard light source, change the mandrel to the plane and then install the embedded inspection instrument on the mandrel 1. Use the sensitive position detector 1 to measure the value of the position (), and then separately indicate the position of the core on the mandrel (). The average of the two indications is the V-shaped flat value error:
The required value difference = [+u:2
Therefore, the zero value of the meter surface can be obtained by the effective method: the zero position maintenance difference and the quarter error of the standard surface are the measured value of its parallelism. The instrument is connected to a right-angle table with a stone method (see Figure AI:, the measuring surface and the given one are equal, this can be obtained from the vertical T single-sided probe. Turn the instrument 180° to the left and put it on the left side of the workbench. Similarly, the half mean of the algebraic sum of the two indications is the vertical counter of the instrument
precision rotation button
direct state construction
sensitive test data only
will be effectively maintained at 0.5m 1. Check the small angle of the instrument. 1. Install an optical meter or contact dryer on both sides of the dyeing machine, put a block 1m below the probe and gradually adjust it to zero: then adjust the lifting screw on the left side of the workbench, adjust the angle, or put a suitable pad under the probe on the left side, and measure the horizontal process at least once. First measure the right side, then measure the right side. The difference between the false and true values of the instrument is the larger one, which is the error of the instrument. See Table 2, where the error is indicated by the previous table. The energy drop value is read according to the above test. The test is simple and clear.
Chuang auxiliary was
U group flat plate
Jiangdan coating
2 replacement block
2 Qianping product
Grade flat plate
Axle "Length 200rm1||tt| |The accuracy is no more than 0.Mmm1
calibrator (its measurement is not
turn over the small dry position screen error
white negative grid gauge (horizontal T outside
surface two vertical!
in 200
(.o0lmg.)
small angle inspection instrument
optical training or technical interference reception
3 etc. The overall solution
no forced error
with zero error
indication value change or
buy sensitive
4h shift element
various process recording...effective
inducing micro-number I set time
18/T10038—1999
table (complete)
check light. square| |tt|| Adjust the micrometer to the middle position of the scale line. 4 is the edge probe pad with 2, 4, 6, 8, 10, [2.14.16mm block Xie raised the right side of the sound detection instrument workbench, so that the exchanger receives the indication as: After the heat is heated, adjust the left side of the probe and the block to the corresponding height, so that the collinear alignment, at this time the controlled instrument indicator (or such as the indicator; above: the position of the indication, the error is not in the error. Then distinguish the technical error of the instrument, and finally attack its maximum value as the indication error of the instrument: see Table A3 positive example and this type of algebraic difference of the indication error type, its absolute value is the maximum difference between the error type and the indication error of the instrument, see Table 2 line sugar grid numerical calculation value. The light capital method is the same as the micrometer indication error. The instrument is placed on the workbench and adjusted to zero, and then the same angle is used to check the measurement reading seven times, the indication is as expected! Or the minimum value on the display device), the minimum value has the greatest difference. On the above-mentioned workbench, when the working surface angle of the device is changed by 15%, the minimum value of the device has a corresponding change ratio. When the working angle of the instrument changes less than 2 degrees (2 effective degrees), the display value of the recorder should change to 1-2 effective degrees. Turn on the power of the instrument and adjust the instrument to zero. Make a record each time. Observe the changes in the high and low values. The maximum value shall not exceed the value specified in this standard. First, turn the instrument to the first position, start, open it to another gear with a small amount of
, and observe the changes in the display value of the receiver. The receiver is installed on the monthly level flat plate. If there is an abnormal increase in the recording value, open it to a small range gear, adjust the judgment belt to make the whole row - lower the agreement, let the indicator fall to the full maximum value of 12, until the needle (or number) is stable at zero degrees! Or number below zero), Xie Shan its string fixed time antelope Jun equipment
small angle classic control variable collection
optical meter or fusion type lower involved only learning
2 equal display block
same serial number 6
level lower plate
interval serial number 6
heart level flat plate
small angle sex detector display value
small bone degree detector benefit display value
the left side of the tender|| tt||Positive stroke
Reverse stroke
Year side reading
JDT10038-1979
Indicates constant change
Left side error
Positive stroke
Area product
Left side error
Side reading
Stop stroke
Min stroke
Right side reading
15 856
Side error
Forward stroke
Reverse stroke
Right side error
JET10038—999
Appendix B
(Appendix of the standard)
Type test method
Type test includes inspection test, hardness test, humidity test, low temperature test and continuous impact test (for inspection test force method, see Appendix B1 Test conditions
! Hardness test at room temperature
1.1 After the instrument is packaged, carry out temperature test, low temperature test and continuous impact test. The relative humidity during the test is not more than 90%. B1.3 The high temperature test temperature is 40°C, the filter opening speed is not more than 1/min, and the temperature is kept constant. 1.4 The low filter test temperature is -25°C, the cooling speed is not more than 1/min, and the temperature is kept constant. B1.5 Continuous impact test:
Acceleration 10g+1g:
Pulse duration 11m2m5:
Pulse frequency 6~100 times/mim
Continuous impact change number 1000 times±10 change:
Pulse waveform: Approximately half sine.
B, when there is no condition to carry out continuous impact test, it can be replaced by automobile transportation test. H2
Replacement test method and test tool or ring block image test method and test: 1 Its or environmental conditions are shown in Table B1. Table B1
Hard spot test
Commercial resistance test
Low retreat test
Continuous impact test
Northern military test
Wave pressure method
Belt method The packaged parts are tested, after which the humidity of the packaged parts drops to the value below the resistance value, and under normal working conditions, the performance still meets the requirements of this international standard
Safety test The packaged parts are tested. Try to take out the packaged parts as high as possible, and stop working under the effect of Figure 24". The policy still meets the basic requirements of this standard. Test according to the test system. The instrument performance still meets the requirements of this standard. The packaged parts are placed in the car box J.7, and the car is driven at 30-4km/h. The environment conditions are as follows: Heart hardness tester or other environments such as peach and refrigerator or other environments such as continuous impact platform. Tread: Intermediate road surface of grade 3 public tread, gravel tread. The road to the top is: Model: Jiefang 4 Automobile Loading quantity: Full quantity 91/3
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