Hanna Instruments HI 4521 User Manual

Page 27

To edit the Custom Buffers:

• Use

to select the

Calibration option.

• Press

and use

to highlight the

Edit Custom Buffers option.

• For a previous set value, press

to set the custom buffer value

to “----” if desired and confirm the setting by pressing

otherwise press

to edit the selected custom buffer.

• While in edit custom buffer menu press

to set the

custom buffer value to 7.000 pH and then use

to set the desired custom buffer value.

• Press

to exit custom buffer edit menu. If the Saving Confirmation is enabled, press

accept the modified option,

to escape without saving or

to return to the editing mode.

Otherwise, the modified option is saved automatically.

• Use

key to select the next custom buffer to be set or press

to return to Calibration options.

Edit Buffer Group
Accessing this option the user can edit the desired group of five pH buffers for automatic buffer recognition
(Automatic Buffer Entry Type). If the Buffer Group already contains five pH buffers, at least one pH buffer has to
be removed in order to add another buffer.
To set the Buffer Group:

• Use

to select the

Calibration option.

• Press

and use

to highlight the

Edit Buffer Group option.

• Press

and use

and

to choose the

pH buffer to be included in the buffer group.

• Press

to add / remove the selected pH

buffer to / from the buffer group.

• Press

to return to Calibration options and to save the changes.

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

DIRECT MEASUREMENT

To measure the resistivity of a sample using the

Direct reading

mode:

• Press

and then

to select resistivity mea-

sure mode.

• Select the

Direct reading mode (see Resistivity Setup section).

• Proceed as for the conductivity measurement (see

Conductivity

Measurement section).

DIRECT/AUTOHOLD MEASUREMENT

To measure resistivity of a sample using the

Direct / AutoHold reading

mode:
• Select the

Direct / AutoHold reading mode (see Resistivity Setup

section).

• Proceed as for the conductivity measurement. (see

Conductivity

Measurement section)

R E S I S T I V I T Y M E A S U R E

R E S I S T I V I T Y M E A S U R E MENT

M E N T

This manual is related to the following products:

HI 4522