Hach TitraLab KF1000 Series, Руководство пользователя, Страница: 31 / 68

Section 7 Standard operations
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this
section of the document.
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the
personal protective equipment appropriate to the chemicals that are handled. Refer to the
current safety data sheets (MSDS/SDS) for safety protocols.
C A U T I O N
Personal injury hazard. Never use the instrument without the syringe protection cover in place.
C A U T I O N
Chemical exposure hazard. Never remove the stir bar from the beaker before the end of a titration.
7.1 Calibration
7.1.1 Calibrate the titrant
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 the application note
and
Cell management on page 37 to adapt the volume where applicable. 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 home screen, select Calibration .
6. If more than one application contains a titrant calibration method, push the up and
down arrow keys to highlight the application to use, then push
Select .
7. Calibration information shows on the display. If necessary, select an icon for more
information or to change some data.
Option Description
Information Shows more information about the calibration.
Operator Changes the operator ID. Select from a list of applicable operators.
8. 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.
9. Push Start to start the calibration. Calibration data shows on the display.
10. If the default stirring speed needs to be adjusted, push the up and down arrow keys
to increase or decrease the speed.
Note: This adjustment only applies to the current operation. The standard default stirring speed
for the application is not changed.
11. The cell drift threshold, stability bar, sample temperature and measurement duration
are shown at the bottom of the display. The stability bar shows the stability of the
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