Controller Parameters - ECOLAB MULTRONIC Bedienungsanleitung

If the temperature coefficient of the material under analyses is not known, the following
procedure can be employed:
Set Tkα to 0
-
Bring material under analysis up to a reference temperature of 25 °C
-
Record conductivity
-
Bring material under analysis up to operating temperature
-
Record conductivity
-
Calculate the temperature coefficient according to the following formula:
-
Fehler! Textmarke nicht definiert.Tkα
compensation factor in %/K
κT
= Conductivity value at operating temperature
κ25
= Conductivity value at 25 °C (Reference temperature)
T = Operating temperature
K = Thermodynamic temperature
Table showing approximated Coefficients of Temperature Tkα for 25° C for selected
solutions up to a maximum concentration of 5 %wt.:
Group
Salts
Alkalis
Acids
The module selection function can be used to return to the measurement parameter mod-
ule selection.
4.3

Controller parameters

The main menu for adjusting the Multronic can be accessed through operating the ↑-key
in the measuring mask.
Main menu
The controller parameters function can be selected through placing the cursor onto the se-
lected item and operating the ENTER key.
Controller parameter
module selection
(not available at
Multronic OC!)
The electrodeless C-measuring module that is to be parametered can now be selected.
To do so, move the cursor onto the corresponding selected item and operate the ENTER
key.
The adjustment of the electrodeless C controller parameters is carried out on two pages.
417101800_Anhang01_LF_induktiv.doc
Conductivity Measuring Module (electrodeless)
= Temperature
Solution
Tkα for 25° C [%/K]
NaCl
NaOH
HCl
HNO
3
H SO
2 4
- 44 -
κ
⎛
T
−
⎜
κ
⎝
25
α
=
Tk
− °
T 25
2.1
1.8
1.5
1.3
1.0
Rev. 06-07/10
⎞
⎟
1
⎠
[ ]
•
100 %
C