CN109269602A - The dedicated measuring device volumetric values calibration method of protective equipment production testing - Google Patents
The dedicated measuring device volumetric values calibration method of protective equipment production testing Download PDFInfo
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- CN109269602A CN109269602A CN201811241024.0A CN201811241024A CN109269602A CN 109269602 A CN109269602 A CN 109269602A CN 201811241024 A CN201811241024 A CN 201811241024A CN 109269602 A CN109269602 A CN 109269602A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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Abstract
The invention discloses a kind of dedicated measuring device volumetric values calibration methods of protective equipment production testing, using the indirect method of measurement, with dial bore gage at the bottom of dedicated measuring device, 1/2 height and upper limb position, measure 4 inner diameter values respectively by position of halving, the average value for calculating 12 inner diameter values is the inner diameter values of measuring device；With vernier depth gauge dedicated measuring device the bottom center of circle, measure 5 height values along the quartering position of measuring device inner wall circumference, calculate the height value that average height value is dedicated measuring device；The volumetric values of dedicated measuring device can be calculated according to dedicated formula.It in order to verify to geometric measurement method calibration result, selects that surface smoothness is preferable, the relatively regular iron cup of shape, carries out capacity comparison method and geometric measurement method calibrates comparative test.Geometric measurement method calibration result uncertainty is less than capacity comparison method calibration result uncertainty, i.e., with a high credibility using geometric measurement method calibration result.
Description
Technical field
The invention belongs to measuring device calibration method fields, specially a kind of protective equipment production testing dedicated measuring device volumetric values school
Quasi- method.
Background technique
Dedicated measuring device used in malicious material property detection is filtered in protective equipment production, volumetric values it is accurate whether it is direct
It influences the quality of Chemical Agent Resistant Material and filters the accurate of malicious material property testing result.For a long time, the volumetric values of dedicated measuring device are always
Calibration method that is ununified, standardizing, also without corresponding enterprise measurement standard.In recent years, applicant is referring to JJG196-2006
" common volumetric glass " (measure method, capacity comparison method) calibrates dedicated measuring device, and the method is there are following drawback, and the
One, since dedicated measuring device shape is different from common volumetric glass (no metering neck), keep calibration result inaccurate；The second, private volumn
Device is made of metal material, and contact water will cause measuring device corrosion, leakage, influence capability value, also influences the service life of measuring device.Cause
This carries out geometric measurement method to the dedicated measuring device volumetric values Research on Calibration Technology of protective equipment production testing, and the dedicated measuring device of specification holds
Product value calibration method, it is ensured that dedicated measuring device volumetric values calibration result is accurately unified.
For the unification for guaranteeing national magnitude, national measurement superintendent office provides according to China's " measurement Law " Article 10, establishes
It is a set of from mete-wand by measurement criteria, carry out the program of transmission of quantity value, to working measuring instrument to guarantee measurement instrument
Have its due accuracy and unified magnitude.The program of this transmission of quantity value is known as verification system table.Held according to country
Automatic check system in measurement table is measured, geometric measurement method also can be used in addition to measurement method, capacity comparison method can be used in dedicated measuring device,
I.e. by built mathematical model, certain feature geometries parameters of measuring device are measured using dimensional measurement means, are found out by calculating
Volumetric values.
Summary of the invention
It is an object of the present invention to provide a kind of dedicated measuring device volumetric values calibration methods applied to protective equipment production testing.
The present invention is achieved by the following technical scheme:
A kind of dedicated measuring device volumetric values calibration method of protective equipment production testing, using the indirect method of measurement (dimensional measurement
Method), with dial bore gage at the bottom of dedicated measuring device, 1/2 height and upper limb position, measured in 4 respectively by position of halving
Diameter value, the average value for calculating 12 inner diameter values is the inner diameter values of measuring device；With vernier depth gauge dedicated measuring device the bottom center of circle,
5 height values are measured along the quartering position of measuring device inner wall circumference, calculate the height value that average height value is dedicated measuring device；
The volumetric values of dedicated measuring device can be calculated according to the following formula:
In formula: V --- private volumn body product, mL；
D --- dedicated measuring device internal diameter, cm；
H --- dedicated measuring device height, cm.
In order to verify to geometric measurement method calibration result, select that surface smoothness is preferable, the relatively regular iron cup of shape,
It carries out capacity comparison method and geometric measurement method calibrates comparative test.Geometric measurement method (indirect method of measurement) calibration result uncertainty
It is less than capacity comparison method calibration result uncertainty, i.e., with a high credibility using geometric measurement method calibration result.
Specific embodiment
Specific embodiments of the present invention are described in detail below.
1, the selection of standard used is calibrated
Because dedicated measuring device volume is cylinder using part, the calibration of volumetric values can be calculated by measurement internal diameter, height
It obtains.It is investigated, measures measuring device optional inside micrometer, the dial bore gage of cylinder inner diameter at 3；Measure cylinder height
Optional vernier depth gauge.
(1), 3 inside dial indicators
3 inside micrometers are mainly used for the measurement of precision machinery workpiece internal diameter, when measurement 3 points it is necessary at tested position
Uniform stressed can accurately measure workpiece diameter.Since dedicated measuring device inner wall smoothness requirements are not high, it cannot be guaranteed that 3 points uniform
Stress, so cannot achieve the accurate measurement to its internal diameter with 3 inside micrometers.
Dial bore gage
It is not high to measured piece inner wall smoothness requirements when measurement, it can measure internal diameter and error at cylinder different depth, and
Dial bore gage can measure the diameter of multiple basic sizes after once adjusting and midway does not need to adjust, to dedicated measuring device difference portion
Position internal diameter repeatedly measures easily.
(2), vernier depth gauge
The height of cylinder different parts can accurately be measured.
(3), outside micrometer
Dial bore gage side area of bed can be accurately measured, provides foundation for dial bore gage measurement result.
2, the setting of measuring device technical parameter
The volumetric values of dedicated measuring device according to needed for different model product and volumetric values allowable error (being shown in Table 1) select internal diameter
The technical parameter (being shown in Table 2) of dial gauge, vernier depth gauge and outside micrometer
The dedicated measuring device technical indicator of table 1
2 measuring device technical parameter of table
3, the foundation of dedicated measuring device volumetric values calibration result mathematical model
Because the shape of dedicated measuring device is cylinder, the mathematical model that volumetric values calculate are as follows:
In formula: V --- private volumn body product, mL；
D --- dedicated measuring device internal diameter, cm；
H --- dedicated measuring device height, cm.
4, the research of geometric measurement method calibration parameter and method
According to geometric measurement method volumetric values calibration result mathematical model, as long as accurately measuring the internal diameter of dedicated measuring device, height
Volumetric values can be calculated in value.
Because of the limitation of the circularity of dedicated measuring device, even thickness degree and bottom smooth degree, internal diameter, height measurement point are selected
When, sufficient representativeness should be made it have, economy can operate again.Just in measuring device, selection surface smoothness is preferable, outside
The relatively regular carry out pilot study of shape, to determine measurement method.
4.1, the selection of internal diameter measurement point
4.1.1, method one: select the bottom of dedicated measuring device, at a quarter height, at half height, four/
At three height and upper limb position, is measured 8 inner diameter values respectively by position of halving, calculates the average value (being shown in Table 3) of 40 inner diameter values；
3 inner diameter measurement method one of table
4.1.2, method two: select the bottom of dedicated measuring device, at a quarter height, at half height, four/
At three height and upper limb position, is measured 4 inner diameter values respectively by position of halving, calculates the average value (being shown in Table 4) of 20 inner diameter values；
4 inner diameter measurement method two of table
4.1.3, method three: the bottom of dedicated measuring device is selected, at half height and upper limb position, by position of halving point
8 inner diameter values are not measured, calculate the average value (being shown in Table 5) of 24 inner diameter values.
5 inner diameter measurement method three of table
4.1.4, mode four: the bottom of dedicated measuring device is selected, at half height and upper limb position, by position of halving point
4 inner diameter values are not measured, calculate the average value (being shown in Table 6) of 12 inner diameter values；
6 inner diameter measurement method four of table
4.1.5, distinct methods measurement result summarizes and (is shown in Table 7)
7 distinct methods measurement result of table summarizes
| Measurement method | It is interior through measurement result (mm) |
| Method one | 80.65 |
| Method two | 80.63 |
| Method three | 80.65 |
| Method four | 80.66 |
According to experimental result as can be seen that with above-mentioned four kinds of method choice measurement points, the very poor Δ of inner diameter values resultmaxFor
0.03mm, by mathematical model It can be seen that measurement method is to volumetric values
It influences to be much smaller than allowable error ± 2, therefore inner diameter measurement method selection method four.
4.2, the selection of height measurement point
4.2.1, method one: selecting the bottom center of circle of dedicated measuring device, the eight equal parts position of half radius circumference, along amount
17 height values are measured in the eight equal parts position of device inner wall circumference, calculate average height value (being shown in Table 8)；
8 height measurement method one of table
4.2.2, method two: the bottom center of circle of dedicated measuring device, the quartering position of 1/2 radius circumference are selected, along measuring device
9 height values are measured in the quartering position of wall circumference, calculate average height value (being shown in Table 9)；
9 height measurement method two of table
4.2.3, method three: select the bottom center of circle of dedicated measuring device, measure 5 along the quartering position of measuring device inner wall circumference
Height value calculates average height value (being shown in Table 10)；
10 height measurement method three of table
4.2.4, different measurement method results compare and the determination of measurement method (being shown in Table 11)
The different measurement method results of table 11 summarize
| Measurement method | Measurement result (mm) |
| Method one | 60.47 |
| Method two | 60.47 |
| Method three | 60.37 |
According to experimental result as can be seen that with above-mentioned three kinds of method choice measurement points, the very poor Δ of height measurement resultsmaxFor
0.10mm, according to mathematical model It can be seen that measurement method is to volumetric values
It influences to be much smaller than allowable error, therefore optional selection method three is height measurement method.
5, capacity comparison method and geometric measurement method comparative test
In order to verify to geometric measurement method calibration result, select that surface smoothness is preferable, the relatively regular iron cup of shape,
It carries out capacity comparison method and geometric measurement method calibrates comparative test
5.1, capacity comparison method calibration is tested
5.1.1, calibration standard device
1. secondary standard volumetric glass
2. A grades of droppers
5.1.2, calibration method
Volumetric glass vertification regulation is often used referring to JJG196-2006, selects secondary standard volumetric glass, the A of respective volume
Grade buret is calibration medium with water, and by two calibrators, everyone is done six times, is dedicated with the average value of two people, ten second fruiting
The volumetric values of measuring device.
5.1.3, test result (being shown in Table 12)
12 capacity comparison method calibration result of table
5.2, geometric measurement method calibration test
5.2.1, calibration standard device (being shown in Table 13)
13 standard list of table
5.2.2, calibration method
Using the indirect method of measurement, with dial bore gage at the bottom of dedicated measuring device, 1/2 height and upper limb position, by etc.
Quartile is set measures 4 inner diameter values respectively, and the average value for calculating 12 inner diameter values is the inner diameter values of measuring device；Existed with vernier depth gauge
5 height values are measured in the bottom center of circle of dedicated measuring device along the quartering position of measuring device inner wall circumference, and it is special for calculating average height value
With the height value of measuring device.
The volumetric values of dedicated measuring device can be calculated according to the following formula:
In formula: V --- private volumn body product, mL；
D --- dedicated measuring device internal diameter, cm；
H --- dedicated measuring device height, cm.
5.2.3, test result (being shown in Table 14)
14 geometric measurement method calibration result of table
6, the uncertainty evaluation of geometric measurement method calibration result
6.1, uncertainty source analysis
6.1.1, the uncertainty u that dial bore gage measurement internal diameter introducesd1
6.1.2, the uncertainty u that vernier depth gauge measurement height introducesh1
6.1.3, the uncertainty u of the representative bad introducing of internal diameter measurement position selectionA
6.1.4, personnel read the uncertainty u that dial bore gage introducesd2
6.1.5, personnel read the uncertainty u that vernier depth gauge introducesh2
6.1.6, the uncertainty u of the representative bad introducing of elevation carrection position selectionhA
6.2, partial uncertainty is analyzed
6.2.1, the uncertainty u that dial bore gage measurement internal diameter introducesd1
By dial bore gage calibration certificate it is found that the dial bore gage error of indication is 25 μm, takes and be uniformly distributed, then do not know
Degree are as follows:
6.2.2, the uncertainty u that vernier depth gauge measurement height introducesh1
By vernier depth gauge calibration certificate it is found that the vernier depth gauge limits of error are 0.03mm, takes and uniformly divide
Cloth, then uncertainty be
6.2.3, the uncertainty u of the representative bad introducing of internal diameter measurement position selectionA
The internal diameter measurement result (table 7) for selecting 4.1 4 kinds of measurement methods is evaluated with A class method:
6.2.4, personnel read the uncertainty u that dial bore gage introducesd2
Due to personnel's collimation error, the error of dial bore gage is read are as follows: 0.05mm takes and is uniformly distributed, then
6.2.5, personnel read the uncertainty u that vernier depth gauge introducesh2
Reason is same as above, and personnel read the error of vernier depth gauge are as follows: 0.01mm takes and is uniformly distributed, then
6.2.6, the uncertainty u of the representative bad introducing of elevation carrection position selectionhA
The height measurement results (table 11) for selecting 4.2 3 kinds of measurement methods are evaluated with A class method:
6.3, combined standard uncertainty
According to mathematical model, corresponding sensitivity coefficient are as follows:
| Number | cd | ch |
| 15# | 86.93cm2 | 43.46cm2 |
| 26# | 131.51cm2 | 83.57cm2 |
Uncertainty budgetary estimate (is shown in Table 15):
15 geometric measurement method calibration result partial uncertainty summary sheet of table
Combined standard uncertainty
| Number | 15# | 26# |
| uc | 0.36mL | 0.54mL |
6.4, expanded uncertainty
K=2 is taken, then U=2uc=0.72mL
| Number | 15# | 26# |
| U (k=2) | 0.72mL | 1.1mL |
7, the uncertainty evaluation of capacity comparison method calibration result
7.1, uncertainty source analysis；
7.1.1, the uncertainty u that secondary standard volumetric glass, A grades of burets introduceb；
7.1.2, the uncertainty u that measurement reproducibility introducesA；
7.1.3, personnel read the uncertainty u that standard (secondary standard volumetric glass, A grade buret) introducesr；
7.2, partial uncertainty analysis (for calibrating the dedicated measuring device of 300mL)；
7.2.1, the uncertainty u that secondary standard volumetric glass, A grades of burets introduceb(being shown in Table 16)；
With A grades of 100mL, 200mL, 500mL secondary standard volumetric glass, 50mL burets, limits of error difference
It for 0.3mL, 0.6mL, 1..0mL, 0.05mL, takes and is uniformly distributed, then
The uncertainty that 16 standard of table introduces
7.2.2, the uncertainty u that measurement reproducibility introducesA(being shown in Table 17)
The uncertainty that 17 measurement reproducibility of table introduces
7.2.3, personnel read the uncertainty u that standard (secondary standard volumetric glass, A grade buret) introducesr
Personnel read the uncertainty u that standard (secondary standard volumetric glass, A grade buret) introducesrVery little can be ignored
Disregard.
7.3, combined standard uncertainty
| Number | 15# | 26# |
| uc | 1.74mL | 1.91mL |
7.4, expanded uncertainty
K=2 is taken, then U=2uc
| Number | 15# | 26# |
| U (k=2) | 3.5mL | 3.8mL |
8, conclusion
Two kinds of different calibration method calibration results (being shown in Table 18)
18 geometric measurement method of table and capacity comparison method calibration result
As can be seen that geometric measurement method calibration result uncertainty is less than capacity comparison method calibration result uncertainty, i.e.,
It is with a high credibility using geometric measurement method calibration result.
It should be pointed out that for the those skilled in the art of the art, without departing from the principle of the present invention,
Several improvement and application can also be made, these are improved and application is also considered as protection scope of the present invention.
Claims (1)
1. a kind of dedicated measuring device volumetric values calibration method of protective equipment production testing, it is characterised in that: the indirect method of measurement is used,
With dial bore gage at the bottom of dedicated measuring device, 1/2 height and upper limb position, 4 inner diameter values are measured respectively by position of halving,
The average value for calculating 12 inner diameter values is the inner diameter values of measuring device；With vernier depth gauge in the bottom center of circle of dedicated measuring device, along amount
5 height values are measured in the quartering position of device inner wall circumference, calculate the height value that average height value is dedicated measuring device；
The volumetric values of dedicated measuring device can be calculated according to the following formula:
In formula:V--- private volumn body product, mL；
d--- dedicated measuring device internal diameter, cm；
h--- dedicated measuring device height, cm.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373349A (en) * | 2002-04-02 | 2002-10-09 | 上海交通大学 | Oil tank volume measuring system and calibrating method |
| CN206959957U (en) * | 2017-07-19 | 2018-02-02 | 山东科技大学 | A kind of rectifier that can correct cylinder scale |
-
2018
- 2018-10-24 CN CN201811241024.0A patent/CN109269602A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373349A (en) * | 2002-04-02 | 2002-10-09 | 上海交通大学 | Oil tank volume measuring system and calibrating method |
| CN206959957U (en) * | 2017-07-19 | 2018-02-02 | 山东科技大学 | A kind of rectifier that can correct cylinder scale |
Non-Patent Citations (1)
| Title |
|---|
| 孙彦楷 等: "尺寸测量法与静态容积法检定钟罩装置分析", 《电子质量》 * |
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