User Guide

• All subsequent measurements will be compensated to 25°C (77°F).

If you prefer to standardize the temperature compensation to

20°C (68°F) rather than 25°C (77°F), leave the °C knob at 18°C

(if the temperature of your solution is 18°C), adjust the trimmer

to read "11.67 mS" (see the conductivity vs. temperature chart at

page 18). All subsequent measurements will be compensated to

20°C.

• The calibration is now complete and the instrument is ready for

use.

The instrument should be re-calibrated at least once a month, or

when the probe or battery is changed.

Note: For more accurate results, it is advisable to use a calibration

solution close to the range to be measured. See the accessories

section on page 23 for a wide selection of conductivity solu-

tions.

PROCEDURE FOR HI 8633

• Pour sufficient quantity of a conductivity

calibration solution (e.g. HI 7030/

HI 8030) into a beaker to cover the holes

on the probe. If possible, use plastic bea-

kers to minimize any EMC interference.

• Immerse the conductivity probe, making

sure that holes are completely submerged,

and the ChecktempC in the solution.

• Wait for a couple of minutes for thermal

equilibrium to be reached.

• Tap the probe on the bottom, then shake it while rotating to make

sure no air bubbles remain trapped in the sleeve.

• Record the temperature of the HI 7030/HI 8030 buffer solution

from the ChecktempC (e.g. 18°C).

• Switch the instrument on by pressing ON/OFF.

• Press COND/TEMP to display the temperature.

• Adjust the TEMPERATURE knob to display 18°C.

HI 7030

OFF

COND.

TEMP.

TEMPERATURE