HACH LANGE TitraLab KF1121, Основное руководство пользователя, Страница: 17 / 432

Get a sample measurement
Use this option to get sample measurements with one of the installed applications.
1. Make sure that the glass beaker, the sensor holder and all related parts are clean and dry. Put a
magnetic stir bar into the beaker.
2. Attach the beaker to the sensor holder. Make sure that the beaker fits tightly into the sensor
holder.
3. Read the related "Application Note" from the USB applications key for more instructions.
4. Fill the beaker with the applicable amount of solvent. Refer to Cell management on page 18.
Make sure that there is no liquid spill. Make sure that the initial level is enough so that the sensor
is correctly installed in the sample. Do not put too much solvent in the beaker.
5. From the main menu, select the measurement application, then push Start . Application
information shows on the display.
6. If necessary, select an icon for more information or to change some data.
7. Make sure that the icon at the bottom of the display is highlighted. Do the instructions that
show on the display adjacent to this icon. Make sure that the tubes and sensor are correctly
aligned.
8. Push Start to start the cell conditioning. Measurement data shows on the display.
9. If the default stirring speed needs to be adjusted, push the up and down arrow keys to increase or
decrease the speed.
Note: Changing the default stirring speed can effect the measurement result.
10. If the options are available during the measurement procedure, push Skip to ignore the current
step or push Stop to abort the measurement.
11. Weigh the sample in its container and write down the result.
12. When the cell conditioning is complete add the sample. Remove the sample stopper and put the
correct amount of sample into the beaker with an applicable utensil. Make sure that all of the
sample is put into the center of the beaker and that none of it spills onto the walls of the beaker.
13. Put the sample stopper back into the sensor holder. Make sure that the sample stopper fits tightly
into the sensor holder.
14. Weigh the empty sample container and subtract this value from the weight of the sample in its
container (refer to step
11 ). The result is the exact weight of the sample analyzed. Write down
this value.
15. Push Start to start the moisture content analysis. Measurement data shows on the display.
Note: The moisture content analysis will start automatically after the addition of sample if the Injection
Autodetect parameter is set to Yes.
16. If the default stirring speed needs to be adjusted, push the up and down arrow keys to increase or
decrease the speed.
Note: Changing the default stirring speed can effect the measurement result.
17. If the options are available during the measurement procedure, push Skip to ignore the current
step or push Stop to abort the measurement.
18. When the measurement is complete, enter the exact weight of the sample analyzed (refer to step
14 ). Push the arrow keys to see the different measurement views.
19. Push Next for the options that follow:
Option Description
Replicate sample Use this option to start the same titration on the same sample. This is used to study the
repeatability by successively analyzing several parts of the same sample. At the end of
each measurement, a window shows the average value, the standard deviation and the
relative standard deviation.
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