Hanna Instruments hi 7034 Manuel D’Utilisation

8

INITIAL  PREPARATION

If you are measuring in the mS ranges, calibrate the meter using
HI7030 (or HI8030) conductivity solution (12.88 mS @ 25°C) or
HI7034 (or HI8034) conductivity solution (80 mS @ 25°C). Choose
a solution with a conductivity value close to the solution to be
measured. For the µS ranges, use HI7031 (or HI8031) conductivity
solution (1413 µS @25°C) when calibrating in the range from 0 to
1999 µS or HI7033 (or HI8033) conductivity solution (84 µS @
25°C) when calibrating  in the range from 0 to 199.9 µS.
Rinse the probe thoroughly in distilled water. This is to minimize
contamination of the calibration solution and secure higher accuracy.
When possible, use plastic beakers to minimize any EMC interfer-
ences.

PROCEDURE  FOR  HI8819:

• Pour a small quantity of the conductivity so-

lution into a plastic beaker e.g. HI7030 or
HI8030 (12.88 mS/cm @ 25°C).

• Immerse the conductivity probe in the solu-

tion submerging the holes of the sleeve (0.5cm
below). Make sure that no air bubbles are
trapped inside the glass sleeve. Wait for 2 or
3 minutes for the thermal equilibrium.

• Use a CHECKTEMP or a glass thermometer

with resolution  of  1° for  measuring the
temperature of the solution (e.g. 18°C).

• Switch the instrument on by pressing the ON/

OFF key.

• Press COND/TEMP key to display temperature

settings.

• Adjust the TEMPERATURE knob to display

"25°C" if you are using 25°C (77°F) as refer-
ence temperature.

HI 7030

°C

TEMPERATURE