Hanna Instruments pH 210 User Manual

Page 7

• When the reading is stable and close to the selected buffer,

“READY” tag will appear and “CFM” tag will blink.

• Press CFM to confirm calibration.
• The calibrated value is then displayed on the

primary LCD and the secondary LCD will display
the second expected buffer value.

Note: The instruments will automatically skip the buffer used for the

first point. It also skips 6.86 if 7.01 buffer was used and

viceversa. Likewise, it will skip 9.18 if 10.01 buffer was used and

viceversa.

• After the first calibration point is confirmed,

immerse the pH electrode and the temperature

probe approximately 4 cm (1½”) into the

second buffer solution and stir gently. The

temperature probe should be close to the pH

electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable, “READY” tag will appear and “CFM”

tag will blink.

• Press CFM to confirm calibration. The instrument

will return to measurement mode.

Notes: • If the value measured by the meter is not close to the

selected buffer, “WRONG ” and “WRONG ” tags will
blink alternately. In this case check if the correct buffer
has been used, or regenerate the electrode by following
the cleaning procedure (see page 22). If necessary,
change the buffer or the electrode.

• The “WRONG” tag and temperature value are displayed

blinking if the temperature reading is out of the defined
temperature range of the buffer. Calibration cannot be
confirmed in this situation.

• Press RANGE to display the tem-

perature reading on the LCD during
calibration (pH 211, pH 212, pH
213 only).

ONE-POINT CALIBRATION

ONE-POINT CALIBRATION
• Proceed as described in “Two-point calibration” section.
• Press CAL after the first calibration point

was confirmed.

The instrument will return to measurement mode
and will memorize the one-point calibration data.
Note: Press and hold down CFM and then press CAL. The instrument

sets default calibration parameters, displays “CLR” message for a
few seconds and then returns to normal measurement mode.

CFM

CAL

BUF

BUFFER pH

This manual is related to the following products:

pH 211 pH 212 pH 213