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Huazheng HZ1200 Volumetric Karl Fischer Titration Apparatus
I. Features of Volumetric Karl Fischer Titration Apparatus
l With new microprocessor technology, the meter can show relevant measuring methods and measuring results. It has friendly operating interface for convenience.
l The meter has several titrate modes including Pre-titrate, Auto titrate, Manual titrate, Constant titrate and KF titer measurement, etc. The instrument has filling and cleaning function.
l For KF reagent, the instrument has feeding, drainage, KF reagent mixing function, prevent users from direct contact with KF reagent, simplify the user operation.
l The instrument supports automatic anti-overflow protection function for solution in titration cup.
l The instrument supports failure detection and prompt functions for KF reagent .
l The transmission system has been improved to reduce the size and noise of the meter during operation. The stirring system adopts PWM technology to adjust the speed of stirring system.
l The meter has USB interface which can be connected to the computer. It is controlled by the professional software.
l It supports GLP norm and can save 200 sets of titration data. Users can view and printout.
l It supports firmware upgrade, allows function extension.
II.Main Specifications and Performance
1. Measuring range: 0.1mg~250 mg;
2. Resolution: 0.1mg;
3. Accuracy of polarization current: 1µA ±0.2µA; 50µA ±10µA;
4. Repeatability of titration analysis: 0.5％;
5. Normal working conditions:
Environments temperature:(5.0~35.0)℃; Relative humidity: ≤80%;
Power supply: (220±22)V，Frequency(50±1)Hz;
There should be no disturbance of electromagnetic field.
6. Dimension(mm)：340×400×400 (length×width×height).
7. Weight(kg)：about 10.
III.Function introduction
l The meter has several titrate modes including Pre-titrate, Auto titrate, Manual titrate, Constant titrate and KF titer measurement, etc.
l The instrument supports multiple burette types, and supports recalibration of burette factor.
l The instrument has filling and cleaning function.
l The meter has several titrate modes including Pre-titrate, Auto titrate, Manual titrate, Constant titrate and KF titer measurement, etc. After titration, the meter can generate special titrate modes directly.
l The instrument supports automatic anti-overflow protection function for solution in titration cup.
l The instrument supports failure detection and prompt functions for KF reagent .
l It supports GLP norm and can save 200 sets of titration data; data also supports store, delete, view and printout.
l The meter has USB interface which can be connected to the computer. It is controlled by the professional software.
l The instrument supports RS232 printer to print the titration results.
IV.Titrate mode introduction
n Pre-titrate Mode
To ensure the accuracy of measurement, usually before the formal analysis of samples, the original water inside the titration cup must be exhausted. Keeping the titration cup in a nonaqueous environment, and then start sample measurement, so pre-titrate mode is actually a pretreatment. Usually pre-titrate is performed before each measurement, especially for long time no use or the replacement of KF reagent A, in a word, pre-titrate must be performed if water exists in titration cup.
n Auto Titrate Mode
Select auto titrate mode if the endpoint value of the sample is already known. After users set corresponding control parameters, the instrument will automatically start the titration.
n Manual Titrate Mode
During titration, users need to add solution, determine the potential stability after adding and the next added volume by themselves. This titrate mode will help users find titration endpoint, which is convenient for users to titrate this kind of samples with auto titrate next time.
n Constant Titrate Mode
The titrate mode is suitable for certain special situation, such as continuous titration required anhydrous state all the time.
n KF Titer Measure Mode
Generally, we use KF reagent with known titer to measure water content; in turn, this mode is to determine actual KF reagent titer by adding standard samples..
Note:
After the replacement of KF reagent B (titrant), since the titer of KF reagent varies a lot with actual nominal KF titer, users must measure KF titer again, otherwise will directly affect the measurement result.
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