User Manual

• Press CAL key on the pH range or on the EC range. The calibration

screen is displayed. Press Temp function key to enter the temperature

calibration mode. The temperature calibration is performed for the

current channel only. The calibration routine is the same for both

channels, so Ch1 calibration is presented next.

• Prepare a vessel containing ice and water and another one containing

hot water (at approximately

50 ºC or 122 ºF). 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. Connect the temperature probe or the EC

probe to the appropriate socket.

• Immerse the temperature probe or the EC probe including temperature

sensor into the vessel with ice and water as close as possible to the

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

• Use the ARROW keys to set the calibration point value to that of ice

and water mixture, measured by the reference thermometer. When

the reading is stable and close to the selected calibration point, the

Confirm function key is displayed.

• Press Confirm to confirm.

• The second expected calibrated point is displayed.

• Immerse the temperature probe into the second vessel as close as

possible to the reference thermometer. Allow a few seconds for the

probe to stabilize.

TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION

TEMPERATURE CALIBRATION

(for technical personnel only)