6.5.3 Input of concentration
values
In the concentration measuring mode, the
instrument can permanently store the
following data of 8 different substances:
• Conductivity range
MR 3: 0 ... 2000 µS / cm, or
MR 4: 0 ... 20.00 mS / cm, or
MR 6: 0 ... 200.0 mS / cm
• Table of concentration as a function of
conductivity
• Table of α value as function of temperature
• Independent setpoints and hysteresis
values for both limit contacts
• Alarm threshold
• Concentration values for lower and upper
output current limits
The concentration and α tables for
substances 1 to 4 are fixed.
They can neither be read nor written via the
operating matrix or the RS interface.
Note:
See pages 43 to 45 for a detailed
description of the individual
functions.
The concentration and α tables for
substances 5 and 6 are available only via the
RS interface.
The concentration and α tables for
substances 7 and 8 are available via the
operating matrix and the RS interface.
Matrix field V5 / H0 (substance number
selection) is used to set the substance
number to which matrix fields V5 / H1 to
V5 / H7 and V6 / H0 to V6 / H7 are referred.
When substance parameters are entered via
the RS interface, matrix field V5 / H0 must
always be written first to permit the
subsequent data to be assigned to the
correct substance.
Data entered via the RS interface will become
visible in the operating matrix only after a
successful consistency check.
Sequen. Function
Matrix
field
Note
1 Selection of substance
number to be programmed
V5 / H0 Selection ranges:
1 … 4: fixed substances
5 … 8: freely selectable substance
parameters
(5 and 6 via RS interface only)
2 Selection of conductivity
measuring range
V6 / H0 Selection ranges:
0 … 2000 µS / cm
0 … 20 mS / cm
0 … 200 mS / cm
3 Input of value pair number
(support values) for
concentration
V6 / H1 A minimum of 2 value pairs is required.
The maximum is 10 value pairs.
4 Selection of value pair
number (support value
number) and input of value
pair
concentration / conductivity
V6 / H2
V6 / H3
V6 / H4
% table: support value number
% table: conductivity
% table: concentration value
5 Input of corresponding
temperature coefficient α
V6 / H5
V6 / H6
V6 / H7
3 temperature / α value pairs must be
entered. For linear function the same
value pair must be entered three times.
α table: number of value pair
α table: temperature value
α table: temperature coeffiecient α
BE4LM151.CHP
mycom CLM 121/151 - CD/MM
6. Operation
35
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