Hanna-instruments HI 4521 Manual de usuario descargar pdf (Pagina 30)

Edit Sample ID

This option allows the user to edit the sample ID.

Note: If the ID Increment Mode is set to None, the sample ID can be set alphanumerically, otherwise it can be

set only numerically.

To edit the Sample ID:

• Use or to select the Sample ID option.

• Press and use or to highlight the

Edit Sample ID

option.

• Press to confirm your selection.

• If the selected increment mode is None, the Text Editor menu will be

displayed on the LCD, allowing you to enter the desired sample

number/name by accepting the highlighted character which is added

in the text bar, using . The and keys

help the user to select the desired character. It is also possible to

delete the last character by positioning the cursor on the Backspace

character and pressing .

• Press to return to Sample ID options. If the Saving

Confirmation is enabled, press to accept the modified

option, to escape without saving or to return

to the editing mode. Otherwise, the modified options are saved

automatically.

• If the selected increment mode is Automatic, the desired sample ID

value can be set using or .

• Press to save the current value or press

cancel operation.

Stability Criteria

This option allows the user to select the signal stability criterion for the measured parameter (pH, mV, ISE):

Fast – this criterion will give faster results with less accuracy.

Medium – this criterion will give medium speed results with medium accuracy.

Accurate – this criterion will give slower results with high accuracy.

Make sure the instrument has been calibrated before taking conductivity measurements.

DIRECT MEASUREMENT

To measure the conductivity of a sample using the Direct reading

mode:

• Press and then to select conductivity

measure mode.

• Select the

Direct

reading mode (see

Conductivity

Setup

• Submerge the conductivity probe and tap it repeatedly to

remove any air bubbles that may be trapped inside the sleeve.

Allow time for the reading to stabilize.

• The measured conductivity value will be displayed.

Note: If the reading is out of range, “-----” will be displayed.

DIRECT/AUTOHOLD MEASUREMENT

To measure conductivity of a sample using the Direct / AutoHold

reading mode:

• Select the Direct / AutoHold reading mode (see

Conductivity

Setup

• If pressing , the “AutoHold” indicator will start blink-

ing on the display until the stability criterion is reached. The

conductivity value will be frozen on the display, along with

“AutoHold” indicator.

• To return to normal measure mode press .

CONDUCTIVITY MEASUREMENTCONDUCTIVITY MEASUREMENT

CONDUCTIVITY MEASUREMENT

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