User Guide

CALIBRATION PROCEDURE OF

HI8931 & HI8936 WITH HI7638

Material needed

• HI7638 conductivity probe

• HI 8931 conductivity controller

• HI8936 conductivity transmitter

• An ammeter (for transmitters without LCD)

• Calibration solutions, according to the different models:

HI7034 80 mS/cm @25°C

for HI8931A, HI8936A & AL

HI7030 12.88 mS/cm @25°C

for HI8931B, HI8936B & BL

HI7031 1413 µS/cm @25°C

for HI8931C, HI8936C & CL

HI7033 84 µS/cm @25°C

for HI8931D, HI8936D & DL

PROCEDURE

• Connect the HI 7638 to the HI8936 transmitter (see page 23).

• Connect the HI8936 transmitter to the HI8931 controller (see

page 24).

• Connect the HI8931 controller to the mains (see page 24).

Before proceeding with the calibration,

make sure that the meter is in measure-

ment mode (MEASURE LED will be lit)

and not in set mode.

• Connect the ammeter to the HI8936 transmitter to monitor the

signal current (see the following picture).

MEA

SURE