Hach TitraLab pH & acid analyzer Manual Básico Del Usuario página 83

Operation
Switch on the instrument
Become familiar with the instrument functions before operation. Learn
how to navigate through the menu and perform the relevant functions.
1. Connect the input connector of the power supply to the POWER IN
port on the back of the TitraLab.
2. Connect the power supply to a power socket.
3. Press ON/OFF below the display to switch on the instrument.
4. The instrument performs a self-test upon each activation.
Note: Wait approximately 20 seconds before switching on again so as
not to damage the electronics and mechanics of the instrument
Startup
Language and data output setting
The titrator software supports multiple languages. The first time the
instrument is switched on, a language selection list is displayed
automatically upon completion of the self-test.
1. Select the required language.
2. Press OK to confirm the selection.
3. Select the type of data output (deactivated, printer, computer) and
confirm with OK.
Change the language setting
The instrument functions in the selected language until the option is
changed.
1. Turn the instrument on.
2. Select SYSTEM > LANGUAGE.
3. Select the required language.
4. Press OK to confirm the selection.
pH and acid content
1. Place a magnetic stirring bar in a titration cell and dispense the
sample as follows:
• Add 10 mL of the sample (either milk, brine or degassed wine
depending on the area of application)
• Tomato sauces: Add 1 g of the sample dissolved in approxi-
mately 10 mL of distilled water
2. Attach the titration cell to the magnetic stirrer.
3. Lower the electrode into the titration cell.
Note: Make sure that the electrode cannot be damaged by the
stirring bar or come into contact with the bottom of the titration cell.
Make sure the combined pH Electrode, including the reference
element porous pin is covered by sample.
4. Select ANALYZE PH + ACIDITY. "INSERT SAMPLE: 1" is shown
on the display.
5. Select START ANALYSIS.
The following steps are carried out automatically by TitraLab:
• Measurement of pH
• Subsequent commencement of titration
6. The result is shown on the display and, depending on the setting,
sent to a printer or computer.
7. Press OK to confirm the result.
8. To begin another analysis, select OK. "NEXT SAMPLE" is shown
on the display.
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