User Guide

• Adjust the OFFSET trimmer if the LCD does not show the zero

reading.

• Pour enough conductivity solution into a

beaker to achieve at least 8 cm (3¼") of

depth.

• Immerse the probe into the beaker with the

conductivity solution. The holes on the sleeve

must be completely submerged in the solution.

• Tap the probe repeatedly on the bottom of the beaker and stir it

to ensure that no air bubbles are trapped inside the sleeve.

• If the temperature of the probe is close to that of the solution the

display will stabilize quickly and provide you with a temperature

compensated conductivity measurement.

However, allow a few minutes if there is a temperature difference

of 5°C (9°F) or more for the ATC circuitry to compensate completely.

• When the reading stabilizes, turn the SLOPE trimmer on the front

of the HI943500 until the LCD reading is the same of the

calibration solution at 25°C (77°F), i.e.:

80.0 mS using HI7034 with HI943500A

12.88 mS using HI7030 with HI943500B

1413 µS using HI7031 with HI943500C

84.0 µS using HI7033 with HI943500D

8 cm

(3¼

HI 7030