Determining/Setting Up The Cell Constant [C]; Determining The Cell Constant; (Calibration In Control Standard) - wtw inoLab pH/Cond Level 1 Operating Manual

Why determine/set
up the cell con-
stant?
4.5

Determining/setting up the cell constant [C]

Due to ageing, the cell constant slightly changes. As a re-
sult, an inexact measured value is displayed. Calibration de-
termines the current value of the cell constant and stores
this value in the instrument.
Thus, you should calibrate at regular intervals (recommend-
ed interval: every 6 months).
You can determine the cell constant of the conductivity mea-
suring cell in the range 0.450 ... 0.500 cm
-1
cm by calibrating in the control standard or set it up manu-
ally in the range 0.250... 2.500 cm
select the fixed cell constants 0.100 cm

4.5.1 Determining the cell constant

(calibration in control standard)

Determine the cell constant as follows:
c
1 Press the
on the display.
g
2 Press the
-1
. Additionally, you can
key repeatedly until LF CELL appears
key.
Operation
-1
or 0.800 ... 1.200
-1 -1
or 0.010 cm .
105