CN206146893U - Dead -stop titration appearance calibrating device - Google Patents

Dead -stop titration appearance calibrating device Download PDF

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Publication number
CN206146893U
CN206146893U CN201621170143.8U CN201621170143U CN206146893U CN 206146893 U CN206146893 U CN 206146893U CN 201621170143 U CN201621170143 U CN 201621170143U CN 206146893 U CN206146893 U CN 206146893U
Authority
CN
China
Prior art keywords
dead
converter
stop titration
stop
singlechip controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201621170143.8U
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Chinese (zh)
Inventor
贾男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Metrology Testing Institute
Original Assignee
Shenyang Metrology Testing Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang Metrology Testing Institute filed Critical Shenyang Metrology Testing Institute
Priority to CN201621170143.8U priority Critical patent/CN206146893U/en
Application granted granted Critical
Publication of CN206146893U publication Critical patent/CN206146893U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a dead -stop titration appearance calibrating device, includes singlechip controller and direct current millivoltmeter, singlechip controller is connected through DA converter and VI converter, and the VI converter is connected with the current input of dead -stop titration appearance on the one hand, and VI converter on the other hand enters into singlechip controller through sampling circuit, AD converter, the direct current millivoltmeter is connected with the voltage output end of dead -stop titration appearance. The utility model discloses an advantage: dead -stop titration appearance calibrating device accords with dead -stop titration appearance measurement calibration's requirement to the calibrating device calibration accuracy is high, and is reliable and stable, guarantees for medicine test provides important measurement.

Description

A kind of dead-stop titration instrument calibrating installation
Technical field
This utility model is related to chemometric techniques field, more particularly to a kind of dead-stop titration instrument calibrating installation.
Background technology
Dead-stop titration instrument is widely used in pharmaceutical producing enterprise and drug inspection field, and it is in volumetric analysiss to true Determine the instrument of titration end-point, the titration for being mainly used in drug inspection diazotising method is indicated eventually.Because dead-stop titration instrument is examined in medicine Use in a large number in testing, whether its value accurately directly affects the level of aromatic primary amine class drug detection quality.But, China is current Also ununified dead-stop titration instrument calibrating installation and national standard and industry standard, it is impossible to effectively calibrated.Therefore, have A kind of dead-stop titration instrument calibrating installation of necessity exploitation, to guarantee the accurate of the safe and effective and metering performance that dead-stop titration instrument is used It is reliable.
The content of the invention
The purpose of this utility model is special there is provided a kind of calibration of dead-stop titration instrument in order to solve above-mentioned practical problem Device.
This utility model provides a kind of dead-stop titration instrument calibrating installation, including singlechip controller 1 and direct current millivoltmeter 2, the Jing D/A converters 3 of the singlechip controller 1 are connected with V/I transducers 4, the one side of V/I transducers 4 and dead-stop titration instrument 5 Current input terminal connection, the another aspect of V/I transducers 4 enters into singlechip controller by sample circuit 6, A/D converter 7 1;The direct current millivoltmeter 2 is connected with the voltage output end of dead-stop titration instrument 5.
Further, also including sodium nitrite solution 8, hydrochloric acid solution 9 and potassium bromide solution 10, the sodium nitrite solution 8th, hydrochloric acid solution 9 and potassium bromide solution 10 are placed in beaker, and the electrode of dead-stop titration instrument 5 is placed in beaker and measures.
Further, the direct current millivoltmeter 2 is 0.5 grade of direct current millivoltmeter, and its measurement range is 0-75mV.
Further, the D/A converter 3 is the dual pathways of American TI Company, and the input numerical digit analogy of 16 Bits Serials is changed Device DAC8532, the D/A converter 3 is connected by SPI serial line interfaces with singlechip controller 1.
Further, the A/D converter 7 be 16 can continuous self-alignment serial a/d transducer ADS11101, it is described A/D converter 7 is connected by I2C buses with singlechip controller 1.
Advantage of the present utility model:Dead-stop titration instrument calibrating installation described in the utility model meets dead-stop titration instrument meter amount school Accurate requirement, and calibrating installation calibration accuracy is high, it is reliable and stable, provide important Measure Guarantee for drug inspection.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment is described in further detail to this utility model.
Fig. 1 is dead-stop titration instrument calibrating installation theory structure schematic diagram.
Specific embodiment
The calibration item of dead-stop titration instrument mainly has polarizing voltage, current of polarization, titration end-point control sensitivity.
A kind of dead-stop titration instrument calibrating installation, including singlechip controller 1, the Jing D/A converters of the singlechip controller 1 3 are connected with V/I transducers 4, and the one side of V/I transducers 4 is connected with the current input terminal of dead-stop titration instrument 5, and V/I transducers 4 are another On the one hand singlechip controller 1 is entered into by sample circuit 6, A/D converter 7, this system realizes current of polarization project Calibration, D/A converter 3 is the dual pathways of American TI Company, and 16 Bits Serials are input into numerical digit analogy converter DAC8532, the D/A Transducer 3 is connected by SPI serial line interfaces with singlechip controller 1.A/D converter 7 can continuously self-alignment serial for 16 A/D converter ADS11101, the A/D converter 7 is connected by I2C buses with singlechip controller 1.Improve calibration essence Degree.Connect the line by figure, it is 0 that output current is adjusted first, lentamente increases output current, makes the electricity of tested dead-stop titration instrument 5 Stream sequentially indicated in each digital reticule of band, and while record the standard current value of each measurement point device, then slowly Ground reduces electric current, until output current is 0, and while record the standard current value of each measurement point device, so as to calculate polarization Electric current.
Also include direct current millivoltmeter 2, the direct current millivoltmeter 2 is 0.5 grade of direct current millivolt of Shanghai Electric Meters Factory No.2's production Table, its measurement range is 0-75mV.The direct current millivoltmeter 2 is connected with the voltage output end of dead-stop titration instrument 5, compares millivoltmeter 2 with the magnitude of voltage of dead-stop titration instrument 5, so as to calculate polarizing voltage.
Also include sodium nitrite solution 8, hydrochloric acid solution 9 and potassium bromide solution 10, the sodium nitrite solution 8, hydrochloric acid is molten Liquid 9 and potassium bromide solution 10 are placed in beaker, and the electrode of dead-stop titration instrument 5 is placed in beaker and measures.Observation stops forever The instruction device of titrator 5, when it has response, the consumption for recording dead-stop titration instrument 5 is titration end-point control sensitivity.
It is understood that above with respect to specific descriptions of the present utility model, be merely to illustrate this utility model and not The technical scheme being limited to described by this utility model embodiment, it will be understood by those within the art that, still can be with This utility model is modified or equivalent, to reach identical technique effect;As long as satisfaction uses needs, all in this reality Within new protection domain.

Claims (5)

1. a kind of dead-stop titration instrument calibrating installation, including singlechip controller(1)And direct current millivoltmeter(2), it is characterised in that:Institute State singlechip controller(1)Jing D/A converters(3)With V/I transducers(4)Connection, V/I transducers(4)On the one hand with stop drop forever Determine instrument(5)Current input terminal connection, V/I transducers(4)On the other hand sample circuit is passed through(6), A/D converter(7)Into To singlechip controller(1);The direct current millivoltmeter(2)With dead-stop titration instrument(5)Voltage output end connection.
2. according to dead-stop titration instrument calibrating installation described in claim 1, it is characterised in that:Also include sodium nitrite solution(8), salt Acid solution(9)And potassium bromide solution(10), the sodium nitrite solution(8), hydrochloric acid solution(9)And potassium bromide solution(10)Place In beaker, dead-stop titration instrument(5)Electrode be placed in beaker and measure.
3. according to dead-stop titration instrument calibrating installation described in claim 1, it is characterised in that:The direct current millivoltmeter(2)For 0.5 grade Direct current millivoltmeter, its measurement range is 0-75mV.
4. according to dead-stop titration instrument calibrating installation described in claim 1, it is characterised in that:The D/A converter(3)For U.S. TI The dual pathways of company, 16 Bits Serials input numerical digit analogy converter DAC8532, the D/A converter(3)By SPI serial interfaces Mouth and singlechip controller(1)Connection.
5. according to dead-stop titration instrument calibrating installation described in claim 1, it is characterised in that:The A/D converter(7)Can for 16 Continuous self-alignment serial a/d transducer ADS11101, the A/D converter(7)By I2C buses and singlechip controller (1)Connection.
CN201621170143.8U 2016-10-26 2016-10-26 Dead -stop titration appearance calibrating device Expired - Fee Related CN206146893U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621170143.8U CN206146893U (en) 2016-10-26 2016-10-26 Dead -stop titration appearance calibrating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621170143.8U CN206146893U (en) 2016-10-26 2016-10-26 Dead -stop titration appearance calibrating device

Publications (1)

Publication Number Publication Date
CN206146893U true CN206146893U (en) 2017-05-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621170143.8U Expired - Fee Related CN206146893U (en) 2016-10-26 2016-10-26 Dead -stop titration appearance calibrating device

Country Status (1)

Country Link
CN (1) CN206146893U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108375620A (en) * 2018-02-11 2018-08-07 南通市产品质量监督检验所 A kind of method that automatic potentiometric titration measures 2,4,5- triamido -6- hydroxy pyrimidine sulphates contents
CN109831158A (en) * 2019-03-08 2019-05-31 信阳师范学院 Use for laboratory perovskite solar battery MPPT maximum power point tracking test macro

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108375620A (en) * 2018-02-11 2018-08-07 南通市产品质量监督检验所 A kind of method that automatic potentiometric titration measures 2,4,5- triamido -6- hydroxy pyrimidine sulphates contents
CN109831158A (en) * 2019-03-08 2019-05-31 信阳师范学院 Use for laboratory perovskite solar battery MPPT maximum power point tracking test macro
CN109831158B (en) * 2019-03-08 2020-03-31 信阳师范学院 Maximum power point tracking test system for perovskite solar cell for laboratory

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170503

Termination date: 20171026

CF01 Termination of patent right due to non-payment of annual fee