CN2179581Y - Titrator with digital indication - Google Patents
Titrator with digital indication Download PDFInfo
- Publication number
- CN2179581Y CN2179581Y CN 93235773 CN93235773U CN2179581Y CN 2179581 Y CN2179581 Y CN 2179581Y CN 93235773 CN93235773 CN 93235773 CN 93235773 U CN93235773 U CN 93235773U CN 2179581 Y CN2179581 Y CN 2179581Y
- Authority
- CN
- China
- Prior art keywords
- titration
- piston
- double
- titrator
- feeding tube
- 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
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to a digital display titrator used for digital display of the titration analysis and the quantitative division and extraction of the reference solution, providing a multifunctional digital display titrator which can conveniently and accurately do automatic titration, liquor diversion, quantitative liquor feeding, and ionic activity analysis. A market high-accuracy potentiometer is used in the utility model, a double-piston liquor feeding tube which is fixed in a container with reference solution is driven by a lifting frame, the pistons are hung on the lifting frame, and a container used for placing measured materials is arranged under the outlet port of the flow guiding tube of the double-piston liquor feeding tube. The utility model is suitable for the indicator titration, the electrictitration, the ion-selective electrode titration, quantitative division and extraction of the reference solution, and the titer value analysis.
Description
The utility model relates to numeral and shows titrimetry and quantitatively divide the numeral of getting standard solution to show titrator.
Each laboratory all will be done in components of coal ash, the coal analysis project of sulfur sesquioxide, nitrogen content of coal, rare element or harmful element in sulphur, the coal ash usually.These analysis projects all need with buret and transfer pipet.Present transfer pipet all adopts the rubber pipette bulb imbibition, needs artificial " zero " point of adjusting, and owing to the measurer specification is limited to milliliter (integer), often needs to divide to get several times to prepare a concentration point, thereby increases error.Get with common buret branch and to exist tube wall to be detained solution, the strict control numeration time, otherwise also increase error.Therefore when using glass drop fixed tube or transfer pipet to carry out volumetry, except operating performance numerous and diverse, labor capacity greatly outside, also exist the laboratory personnel who has defective vision to read shortcoming such as tens of branch difficulties of milliliter or cause personal error.
The purpose of this utility model is design a kind of digital display easily and accurately titration (comprising potentiometric titration), quantitatively divides and gets standard solution, and can be used for the numeral demonstration titrator of the one-machine-multi-function of ion-selective electrode analysis.
The purpose of this utility model can reach by following measure, with commercially available accurate shape potentiometer, drive the double-piston liquid-feeding tube by crane, this double-piston liquid-feeding tube is fixed in the bottle that standard solution is housed, piston is hung on the crane, mix up verticality, below double-piston liquid-feeding tube mozzle water delivering orifice, put a container that measured object is housed.Crane when action drive that piston sucks or vent pipe in liquid, the amount of discharged liquid is shown by the dividing potential drop with the potentiometer of crane synchronization action.Put a stirrer in the measured object container, by control system control, titration is carried out synchronously with stirring, makes vs and test solution in time mix.
The utility model becomes electric signal and the supporting composition of double-piston liquid-feeding tube owing to adopted accurate shape potentiometer with the milliliter number.The utilization electronic counter with the periodicity addition, and automatically shows the milliliter number, has avoided eye-observation to read the error of scale.Can pipette different solution by changing different liquid holding bottles, need not to wash liquid-transport pipe-line.Automatically move liquid, imbibition, titration automatically, stirring, zero milliliter location automatically.More accurate than glass drop fixed tube, a milliliter number can be read behind the radix point three.Need not computerized control, or compensation various factors error, one-machine-multi-function both had been applicable to indicator titration, potentiometric titration, ion-selective electrode titration, was applicable to that also quantitative branch gets standard solution, sets titer analysis etc.When moving liquid and liquid feeding, need not for improving chemico-analytic synthesis precision and accuracy, to improve the chemical analysis level, have very important meaning with eye-observation liquid level scale.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
As shown in the figure, the 1st, high precision potentiometer, the 2nd, digital voltmeter, the 3rd, crane, the 4th, double-piston liquid-feeding tube, the 5th, standard solution container, the 6th, determinand container, the 7th, stirrer.
Embodiment 1, indicator titration:
The standard solution of demarcating concentration is poured in the special-purpose bottle 5, and the piston of this bottle is hung over lifting add on the frame 3.Switch imbibition \ titration switch to the imbibition shelves, " zero " milliliter that the automatic imbibition of instrument at this moment shows to digital voltmeter.With the dress sample solution beaker 6 be placed on double-piston pipe draft tube outlets below, put into a stirrer 7, mix up and stir speed.Switch imbibition \ titration switch to the titration shelves, this moment, instrument began titration.Still switch should be dialled and get back to the imbibition shelves to terminal point in the end if drip off 5 milliliters of ranges, repeat above imbibition-titration process, when second time imbibition, 5.000 of titration milliliters of numbers are accumulated to automatically and are shown mouth.Titration proceeds to when closing on terminal point, with \ switch switches to shelves at a slow speed at a slow speed, and this moment, instrument suspended titration, used the endpoint titration key instead, dropwise dripped to terminal point fast.At this moment the demonstration mouth of going up of digital voltmeter 2 shows that a number adds mouthful demonstration number of demonstration up and down, is exactly the milliliter number of this used standard solution of titration.
Embodiment 2, potentiometric titration:
Indicator electrode is connected with the current potential lead-in clamp with contrast electrode, and indicator electrode connects "-" utmost point, and contrast electrode meets "+", and milliliter \ millivolt switch is switched to the millivolt shelves, and other titration step is identical with indicator method.But the analyst will make a millivolt titration curve in advance, according to the millivolt value of the selected control of millivolt situation of change titration end-point.
Embodiment 3, quantitatively divide and get standard solution
The concentration of standard solution of cadmium is 10ug/ml, if join the 15ug/100 colorimetric solution, then should get 1.500 milliliters of standard cadmium solutions and prepare, and divide access method as follows: the piston that will have cadmium standard solution bottle 5 hangs on the crane 3, mixes up verticality.Adopt location imbibition earlier, back titration branch is followed the example of preparation.Allow earlier about instrument imbibition to 3.4 milliliter, use the endpoint titration key control again, drip to 3.500 milliliters, then 100 milliliters of volumetric flasks 6 are placed on below the mozzle water delivering orifice, make instrument drip to 5.00 milliliters.The standard solution that flow into volumetric flask this moment is exactly 1.500 milliliters.Can divide with this method and to get various standard solution, divide and get a concentration point and only need 15 seconds, if do not require that deciding the volume branch gets, each only needs 5 seconds.
Claims (1)
1, a kind of numeral shows titrator, comprise commercially available accurate shape potentiometer [1], double-piston liquid-feeding tube [4] is characterized in that accurate shape potentiometer [1], by crane [3], drive double-piston liquid-feeding tube [4], this double-piston liquid-feeding tube is fixed on container [5] lining that standard solution is housed, and this piston is hung on the crane, mixes up verticality, below double-piston liquid-feeding tube mozzle water delivering orifice, put a container [6] that measured object is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93235773 CN2179581Y (en) | 1993-12-28 | 1993-12-28 | Titrator with digital indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93235773 CN2179581Y (en) | 1993-12-28 | 1993-12-28 | Titrator with digital indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2179581Y true CN2179581Y (en) | 1994-10-12 |
Family
ID=33811123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93235773 Expired - Fee Related CN2179581Y (en) | 1993-12-28 | 1993-12-28 | Titrator with digital indication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2179581Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375017A (en) * | 2010-08-05 | 2012-03-14 | 东北电力大学 | Photoelectric counting alkalinity automatic measuring apparatus |
| CN104807951A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | Potentiometric titrator device |
-
1993
- 1993-12-28 CN CN 93235773 patent/CN2179581Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375017A (en) * | 2010-08-05 | 2012-03-14 | 东北电力大学 | Photoelectric counting alkalinity automatic measuring apparatus |
| CN104807951A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | Potentiometric titrator device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |