CN206146893U - Dead -stop titration appearance calibrating device - Google Patents
Dead -stop titration appearance calibrating device Download PDFInfo
- 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
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
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
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.
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
ID=58622809
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)
| 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 |
-
2016
- 2016-10-26 CN CN201621170143.8U patent/CN206146893U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI585428B (en) | On-line battery internal resistance measuring device and measuring method thereof | |
| CN202928716U (en) | High precision intelligent temperature measurement circuit | |
| CN206146893U (en) | Dead -stop titration appearance calibrating device | |
| CN105116214A (en) | Power detection device | |
| TW200739091A (en) | System, circuit and method for measuring resistance of wheatstone bridge, and computer program | |
| CN203224283U (en) | Liquid flow field calibration device | |
| CN102866180B (en) | High-precision intelligent acidity meter and measuring method thereof | |
| CN204154886U (en) | Based on voltage, the electric current precision metering device of satellite navigation system | |
| CN100520384C (en) | Four-electrode original position soil salt content measuring method | |
| CN100514049C (en) | Original position soil salt content sensing transducer | |
| CN202693510U (en) | Universal biochemical index measuring system | |
| CN201562008U (en) | Milliampere meter | |
| CN203964961U (en) | A kind of portable flow metering device | |
| CN104964729A (en) | Calibrating device for fluid metering instrument | |
| CN201562045U (en) | Weak magnetic field detecting equipment | |
| CN105675414B (en) | Stress-electric coupling surveys crack growth rate detection method | |
| CN204228286U (en) | A kind of Moisture Meter temperature collection circuit | |
| CN210005590U (en) | forward and reverse microwave power measuring circuits | |
| CN105203189A (en) | Self-calibration method of fluid flowmeter online detection device | |
| CN204461518U (en) | A kind of heating type turbine integral type flowmeter | |
| CN104316890B (en) | Voltage, electric current precision metering device and delicate metering method based on satellite navigation system | |
| CN202486035U (en) | Device for measuring macro current corrosion rate of steel bar in concrete | |
| CN105716652B (en) | A kind of detector circuit | |
| CN207300201U (en) | A kind of dual-purpose coating thickness detector | |
| Nan et al. | Development on intelligent small-flow target flow meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |