CN108489576A - A kind of calibrating installation and calibration method of small volumetric(al) standards device - Google Patents

A kind of calibrating installation and calibration method of small volumetric(al) standards device Download PDF

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Publication number
CN108489576A
CN108489576A CN201810743427.9A CN201810743427A CN108489576A CN 108489576 A CN108489576 A CN 108489576A CN 201810743427 A CN201810743427 A CN 201810743427A CN 108489576 A CN108489576 A CN 108489576A
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CN
China
Prior art keywords
water valve
float
range finder
laser range
glass tube
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Withdrawn
Application number
CN201810743427.9A
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Chinese (zh)
Inventor
张�诚
孙斌
赵玉晓
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China Jiliang University
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China Jiliang University
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Priority to CN201810743427.9A priority Critical patent/CN108489576A/en
Publication of CN108489576A publication Critical patent/CN108489576A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/0084Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume for measuring volume

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

The invention discloses a kind of calibrating installations and calibration method of small volumetric(al) standards device, the relationship between the volume of liquid is discharged according to the liquid level of experimental calibration and small volumetric(al) standards device, go out the variation of liquid level when calibration by high-precision triangle reflection laser rangefinder and float measurement, program, which is write, in host computer realizes data processing, the volume for excluding liquid is obtained, to realize the calibration of small volumetric(al) standards device.

Description

A kind of calibrating installation and calibration method of small volumetric(al) standards device
Technical field
The present invention relates to small volumetric(al) standards device field more particularly to a kind of calibrating installations of small volumetric(al) standards device And calibration method, this method and device relate generally to the capacity relative error of small volumetric(al) standards device and capacity repeatability into Row calibration.
Background technology
The calibration of traditional small volumetric(al) standards device is all the measurement method that uses, that is, weighs and be detected in a certain scale of pipettor The quality for the pure water released, then thus and the density of water acquires the actual volume of tested pipettor, and with calibrating point capacity into Row compares.Due to needing detection 6 times according to each capacity calibrating point of national rule, an adjustable small volumetric(al) standards is detected 3 capability values of device need that liquid and drain take for 18 times to operate, and manually press pipettor difficulty or ease and ensure pressing every time Degree all meet measurement verification regulations.Therefore, this method operating procedure repeats, is complicated, and manual operation can bring one Fixed error, in the pipettor of calibration batch time, these defects become apparent.
Invention content
The purpose of the present invention is to provide a kind of calibrating installations and calibration method of small volumetric(al) standards device, solve background Defect existing for technology calibration method.
The purpose of the present invention is what is be achieved through the following technical solutions:A kind of calibrating installation of small volumetric(al) standards device, By being formed with lower component:Host computer, connection glass tube, laser range finder, float, preceding water valve and rear water valve.The laser ranging Instrument is connected with host computer.Small volumetric(al) standards device leakage fluid dram be connected to glass tube left side port center aligned in position, laser The laser probe of rangefinder be connected to port center aligned in position on the right of glass tube.Buoys float is in laser range finder corresponding ports Liquid level on.
Preceding water valve is sequentially arranged at rear water valve on the drainage channel for being connected to glass tube, and passes through experimental calibration water valve and water Glass tube capacity between valve.It is floating to ensure since the measurement range of high-precision triangle reflection laser rangefinder is extremely limited The position of son is present within the measurement range of laser range finder always, using front and back double water valve discharging modes:It is marked by testing Pipe capacity between fixed two water valves, water valve before when draining first opens, makes liquid flow at rear water valve, and float is made to return to laser In the measurement range of rangefinder, then preceding water valve closed, after rear water valve is opened, so that the liquid among two water valves is discharged, finally Water valve after closing, float is always all in the measurement range of laser range finder when achieving the purpose that measurement.
A kind of calibration method of the calibrating installation of small volumetric(al) standards device, includes the following steps;
(1)Testing liquid is injected in connection glass tube, float is put into connection glass tube right output port, float is made to enter Laser Measuring The measurement range of distance meter;
(2)The current liquid level of float is read by PC control laser range finder;
(3)The left port that small volumetric(al) standards device is aligned to connection glass tube carries out drain;
(4)The current liquid level of float is read by PC control laser range finder again;
(5)By host computer procedure, the liquid level difference before and after drain, then the liquid level by experimental calibration and small appearance are calculated The relationship between the volume of standard set-up discharge liquid is measured, obtains the volume of discharge liquid, to realize small volumetric(al) standards dress The calibration set;
(6)If the position of float has exceeded the measurement range of laser range finder, quantitative liquid can be arranged by preceding water valve, rear water valve Go out, and ensures float still in the measurement range of laser range finder;Pass through the pipe capacity between two water valve of experimental calibration, draining When preceding water valve is opened, so that liquid is flow at rear water valve, and float is made to return in the measurement range of laser range finder, then by preceding water Valve close, after rear water valve is opened, so that the liquid among two water valves be discharged, finally closing after water valve, float when reaching measurement Always the purpose all in the measurement range of laser range finder.
The beneficial effects of the present invention are:The present invention realizes the high-precision calibration for small volumetric(al) standards device, adopts With high-precision laser range finder, it can be achieved that more accurately being calibrated than conventional method.Double water valve discharging modes, it is ensured that float Always within the measurement range of laser range finder.
Description of the drawings
Fig. 1 is the structural schematic diagram of calibrating installation of the present invention.
In figure, it is calibrated small volumetric(al) standards device 1, connection glass tube 2, laser range finder 3, float 4, preceding water valve 5-1 With rear water valve 5-2.
Specific implementation mode
With regard to specific embodiment, the invention will be further described below, but the present invention is not restricted to these embodiments.
The present invention covers any replacement, modification, equivalent method and scheme made in the spirit and scope of the present invention.For So that the public is had thorough understanding to the present invention, is described in detail concrete details in following present invention preferred embodiment, and Description without these details can also understand the present invention completely for a person skilled in the art.In addition, the attached drawing of the present invention In be explained herein for the needs of signal not being drawn to scale accurately completely.
A kind of calibration method of small volumetric correction device of the present invention, includes the following steps:
(1)A certain amount of testing liquid is injected in connection glass tube 2, puts into float 4 to connection 2 right output port of glass tube, then Float 4 can be made to enter the measurement range of laser range finder 3 in such a way that water valve discharges water and injects liquid;
(2)The current liquid level of float 4 and record are read by PC control laser range finder 3;
(3)The left port that small volumetric(al) standards device 1 is aligned to connection glass tube 2 carries out drain, so that liquid is not touched pipe as possible Wall reduces error;
(4)Wait for that liquid level is totally stationary and then reads the current liquid level of float 4 by PC control laser range finder 3 And it records;
(5)By host computer procedure, calculate the liquid level difference before and after drain, then by the liquid level of prior experimental calibration with it is micro- The relationship between the volume of liquid is discharged in low capacity standard set-up, the volume of discharge liquid is obtained, to realize small capacity mark The calibration of standard apparatus;
(6)It will appear the case where position of float 4 has exceeded the measurement range of laser range finder 3 after repeatedly measuring, before can passing through Quantitative liquid is discharged by water valve 5-1, rear water valve 5-2, and ensures float 4 still in the measurement range of laser range finder 3;It is logical in advance Crossing the pipe capacity between two water valve of experimental calibration, when draining, first opens preceding water valve 5-1, and liquid is made to flow at rear water valve 5-2, And so that float is returned in the measurement range of laser range finder 3, then by preceding water valve 5-1 close, after by rear water valve 5-2 open, make two Liquid discharge among water valve, water valve 5-2 after finally closing.Above step can realize the liquid of discharging certain amount, and to survey Float 4 is always within measurement range when amount.
Only preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This Invention is not only limited to above example, and concrete structure is allowed to vary.In short, all guarantors in independent claims of the present invention Various change is within the scope of the invention made by shield range.

Claims (2)

1. a kind of calibrating installation of small volumetric(al) standards device, by being formed with lower component:Host computer, connection glass tube(2), laser Rangefinder(3), float(4), preceding water valve(5-1), rear water valve(5-2);The laser range finder(3)It is connected with host computer;
Small volumetric(al) standards device(1)Leakage fluid dram be connected to glass tube(2)Left side port center aligned in position, laser range finder (3)Laser probe be connected to glass tube(2)The right port center aligned in position;Float(4)Swim in laser range finder(3)It is right It answers on the liquid level of port;Preceding water valve(5-1)With rear water valve(5-2)It is sequentially arranged at connection glass tube(2)Drainage channel on, and Pass through water valve before experimental calibration(5-1)With rear water valve(5-2)Between glass tube capacity.
2. a kind of calibration method of the calibrating installation of small volumetric(al) standards device, which is characterized in that this approach includes the following steps:
1)Testing liquid is injected into connection glass tube(2)In, to connection glass tube(2)Right output port puts into float(4), make float (4)Into laser range finder(3)Measurement range;
2)Pass through PC control laser range finder(3)Read float(4)Current liquid level;
3)By small volumetric(al) standards device(1)Alignment connection glass tube(2)Left port carry out drain;
4)Pass through PC control laser range finder again(3)Read float(4)Current liquid level;
5)By host computer procedure, the liquid level difference before and after drain, then the liquid level by experimental calibration and small appearance are calculated The relationship between the volume of standard set-up discharge liquid is measured, obtains the volume of discharge liquid, to realize small volumetric(al) standards dress The calibration set;
6)If float(4)Position have exceeded laser range finder(3)Measurement range, preceding water valve can be passed through(5-1), rear water valve (5-2)Quantitative liquid is discharged, and ensures float(4)Still in laser range finder(3)Measurement range in;Pass through experimental calibration two Pipe capacity between water valve, by preceding water valve when draining(5-1)It opens, liquid is made to flow to rear water valve(5-2)Place, and float is made to return To laser range finder(3)Measurement range in, then by preceding water valve(5-1)Close, after by rear water valve(5-2)It opens, makes two water valves Intermediate liquid discharge, water valve after finally closing(5-2), float when reaching measurement(4)Always all in laser range finder(3)'s Purpose in measurement range.
CN201810743427.9A 2018-07-09 2018-07-09 A kind of calibrating installation and calibration method of small volumetric(al) standards device Withdrawn CN108489576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810743427.9A CN108489576A (en) 2018-07-09 2018-07-09 A kind of calibrating installation and calibration method of small volumetric(al) standards device

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Application Number Priority Date Filing Date Title
CN201810743427.9A CN108489576A (en) 2018-07-09 2018-07-09 A kind of calibrating installation and calibration method of small volumetric(al) standards device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112154959A (en) * 2020-10-20 2021-01-01 中国海洋大学 Device and method for fish proliferation and releasing outdoor temporary culture and fry quantity counting
CN112393783A (en) * 2020-11-11 2021-02-23 华润三九(枣庄)药业有限公司 Traditional Chinese medicine alcohol precipitation solid-liquid interface detection device and detection method thereof
CN115727929A (en) * 2023-01-10 2023-03-03 新创碳谷集团有限公司 Magnetostrictive sensor calibration method and device

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Publication number Priority date Publication date Assignee Title
CN1948930A (en) * 2006-11-21 2007-04-18 北京航天计量测试技术研究所 Correcting apparatus enhancing volume measuring accuracy of small size bell jar and correcting method thereof
CN101074889A (en) * 2007-06-14 2007-11-21 南京航空航天大学 Float laser liquid-level measuring device
CN201852613U (en) * 2010-11-04 2011-06-01 曲阜师范大学 Novel liquid level detector
CN205015063U (en) * 2015-07-29 2016-02-03 中国神华能源股份有限公司 Liquid level calibrating device and liquid level measurement system
CN106799266A (en) * 2016-11-23 2017-06-06 中国计量大学 A kind of hand-held capacity calibration device of pipettor and calibration method
CN107115905A (en) * 2017-05-08 2017-09-01 中国计量大学 The batch calibrating installation and calibration method of a kind of hand-held pipettor capacity
CN107917747A (en) * 2017-11-15 2018-04-17 中国计量大学 A kind of hand-held capacity calibration device of pipettor and its calibration method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1948930A (en) * 2006-11-21 2007-04-18 北京航天计量测试技术研究所 Correcting apparatus enhancing volume measuring accuracy of small size bell jar and correcting method thereof
CN101074889A (en) * 2007-06-14 2007-11-21 南京航空航天大学 Float laser liquid-level measuring device
CN201852613U (en) * 2010-11-04 2011-06-01 曲阜师范大学 Novel liquid level detector
CN205015063U (en) * 2015-07-29 2016-02-03 中国神华能源股份有限公司 Liquid level calibrating device and liquid level measurement system
CN106799266A (en) * 2016-11-23 2017-06-06 中国计量大学 A kind of hand-held capacity calibration device of pipettor and calibration method
CN107115905A (en) * 2017-05-08 2017-09-01 中国计量大学 The batch calibrating installation and calibration method of a kind of hand-held pipettor capacity
CN107917747A (en) * 2017-11-15 2018-04-17 中国计量大学 A kind of hand-held capacity calibration device of pipettor and its calibration method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112154959A (en) * 2020-10-20 2021-01-01 中国海洋大学 Device and method for fish proliferation and releasing outdoor temporary culture and fry quantity counting
CN112393783A (en) * 2020-11-11 2021-02-23 华润三九(枣庄)药业有限公司 Traditional Chinese medicine alcohol precipitation solid-liquid interface detection device and detection method thereof
CN115727929A (en) * 2023-01-10 2023-03-03 新创碳谷集团有限公司 Magnetostrictive sensor calibration method and device

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