Endress+Hauser Mycom CLM 152 Operating Instructions Manual page 39

Mycom CLM 152
Automatic internal measuring range switch-over
(only with conductivity mode/single-circuit operation mode)
Here the Mycom switches automatically to the
suitable measuring range. This requires the
FCYK expansion module (electrical
connection see chapter 4.4.1).
The current measuring range is signalled via
contacts 3 and 4 to the downstream
evaluation unit.
Example of automatic internal measuring
range switch-over with four measuring ranges:
CD
(mS/cm)
MR 4
20000
18000
MR 3
2000
1800
MB 2
100
80
MRB 1
Contact state
Contact 3
Contact 4
Settings for example above:
Trigger thresh. 1

LOW value
100 µS/cm
HIGH value
Endress+Hauser
Then you can define the switch-over points in
the Instrument data/Internal MRS menu and
their individual switching hystereses
(LOW and HIGH values).
20
off
on
See also page 39
Trigger thresh. 2
80 µS/cm
2000 µS/cm
Instrument configuration
Note:
The function is activated
automatically when contacts 3 and 4
are programmed as the »MR
switch-over« (see Chapter 7.1.2).
Trigger thresh. 3 Trigger thresh. 4
1800 µS/cm
18 mS/cm
20 µS/cm
lm152e07.chp
T
Example of internal
measuring range
beispiel.cdr Fig. 7.1 switch-over

37