User Guide

• Stir the probe and tap it gently to the

bottom of the beaker to ensure that

any air bubbles trapped inside it.

For best results, do not put the probe

close to the walls of the beaker or lying

on the bottom.

• Wait for the reading to stabilize. Adjust

the SLOPE trimmer to display the same

value as the calibration solution

@25°C. For example, with HI 7039

buffer solution, adjust the trimmer to

display “5.00”.

Note: Once the controller has been calibrated by referring to the value

@25°C of the calibration solution, all the subsequent measure-

ments are temperature compensated to 25°C. Temperature com-

pensation to a different temperature reference point can be ob-

tained by calibrating the meter to that value. For example, the

conductivity value of HI 7031 @20°C is 1.28 mS/cm. By adjust-

ing the trimmer to display this values, all the subsequent mea-

surements will be compensated to a temperature of 20°C.

The conductivity calibration is now complete.