Endress+Hauser mycom CLM 121 - Page 35

6.5.2 Temperature compensation
at concentration
measurement
For concentration measurement the ATC
values for the chemical substances NaOH,
HNO
3
, H
2
SO
4
and H
3
PO
4
have been preset in
the instrument.
The following table shows up to which
measuring limits the different substances can
be measured depending on the medium
temperature.
The individual assignment of concentration
values to conductivity values also requires the
temperature coefficient to be entered or
determined as described in chapter 6.5.1.
Note:
The reference temperature at
concentration measurement is
always 25 °C.
Fig. 6.6: Limit curves for
concentation measurement
within working temperature
range
Weight %
Temperature°C
14
16
12
10
8
6
4
2
0
0 20 406080100
HNO
3
H
2
SO
4
NaOH
H
3
PO
4
TK-KURVE.GEM
10 30 50 70 90
6. Operation
mycom CLM 121/151 - CD/MM
34