Temperature calibration – Hanna Instruments HI 2210 User Manual

Page 7

TEMPERATURE CALIBRATION

(((((for technical personnel only

for technical personnel only

for technical personnel only)))))

CAL

All the instruments are factory calibrated for temperature.
Hanna’s temperature probes are interchangeable and no tempera-
ture calibration is needed when they are replaced.
If the temperature measurements are inaccurate, temperature
recalibration should be performed.
For an accurate recalibration, contact your dealer or the nearest
Hanna Customer Service Center, or follow the instructions bellow.

• Prepare a vessel containing ice and water and another one

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

• Use a calibrated thermometer with a resolution of 0.1 ºC as a

reference thermometer.

• With the instrument off, press and hold down the CAL & MEM

keys, then power on the instrument. The “CAL” message will
appear and the secondary LCD will show 0.0 ºC.

• Immerse the temperature probe in the vessel with ice and water

as near as possible to the reference thermometer. Allow a few
seconds for the probe to stabilize.

• Use the ARROW keys to set the reading on the secondary LCD to

that of ice and water, measured by the reference thermometer.

• When the reading is stable and close to the selected calibration

point, “READY” message will appear and “CFM” message will blink.

• To confirm press CFM. The secondary LCD will show 50.0

• Press RANGE to display the tem-

perature reading on the LCD during
calibration (HI 2211 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

This manual is related to the following products:

HI 2211