User Manual

Operation Multi 3500i

Calibration evaluation After the calibration, the measuring instrument automatically evaluates

the current status of the calibration. The evaluation appears on the dis-

play and in the calibration record.

Determining the

cell constant

For this calibration procedure, the Measuring cell setting must be set to

cal in the measuring menu. Proceed as follows to determine the cell

constant:

Display Calibration

record

Cell constant [cm

-1

]

+++ within the ranges

0.450 ... 0.500 cm

-1

0.800 ... 1.200 cm

-1

Error Error

outside the ranges

0.450 ... 0.500 cm

-1

0.800 ... 1.200 cm

-1

Perform error elimination ac-

cording to chapter 6 W

HAT TO

DO IF...

1 Connect a conductivity measuring cell to the measuring instru-

ment.

2 In the measured value display, select the conductivity measur-

ing window with <▲><▼> and <M>.

3 Start the calibration with <CAL>.

The calibration display appears.

4 Immerse the conductivity measuring cell in the control standard

solution, 0.01 mol/l KCI.

i Cell constant = 0.475 1/cm

i Immerse sensor in solution

Continue

<CAL>