Hanna Instruments ph 210 User Manual

TEMPERATURE CALIBRATION

pppppH 212 AND

H 212 AND

H 212 AND pppppH 213 ONLY

H 213 ONLY

(for technical personnel only)

0 °C

(32 °F)

°C

50 ºC

(122 ºF)

°C

0 °C

(32 °F)

°C

50 °C

(122 °F)

°C

All the meters are factory calibrated for temperature.
The temperature probes are interchangeable and no temperature
calibration is needed when they are replaced.
If, for any reason, the temperature measurements are inaccurate,
temperature recalibration may be carried out.
For an accurate recalibration, contact your dealer or the nearest
Hanna Customer Service Center.

• Prepare a vessel containing ice and water and another one

containing hot water (at a temperature of around 50 C). Place
insulation material around the vessels to minimize temperature
changes.

• Use a

ChecktempC or a calibrated ther-

mometer with a resolution of 0.1 C as a
reference thermometer.

• With the instrument off, press and hold CAL and then the ON

switch. The "CAL" indicator will come on and the secondary LCD
will show 0.0 C.

• Immerse the temperature probe in the vessel with

the ice and water as near to the

ChecktempC as

possible. Allow a couple of minutes for the probe to
stabilize.

• Use the "

C" or "

C" key to set the

reading on the secondary LCD to that of
ice and water, measured by checktempC
(for example, 0.1 ºC).

• Press CFM to confirm. The secondary LCD will show

50.0 C.

• Immerse the temperature probe in the second

vessel as near to the

ChecktempC as possible.

ELECTRODE CONDITIONING &

MAINTENANCE

PREPARATION

Remove the protective cap.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal
with electrodes and they will disappear when rinsed with water.
During transport tiny bubbles of air may form inside the glass bulb
affecting proper functioning of the electrode. These bubbles can be
removed by "shaking down" the electrode as you would do with a
glass thermometer.
If the bulb and/or junction is dry, soak the electrode in

HI 70300 or

HI 80300 Storage Solution for at least one hour.

Note: To prevent damage to the electrode, remove the pH electrode

from the solution before turning the meter off.
If the meter is OFF, detach the electrode from the meter before
immersing the electrode in the storage solution.