6 Start-up
Mycom S CPM 153
30
Hauser
!
Note!
The two-circuit instrument offers you the possiblity of connecting two electrodes which
•
work completely independently of each other (
dual channel
) or
•
Redundancy
measurement is always advisable when it is necessary to detect elec-
trode wear at an early stage.
•
Look-ahead
: Particularly in critical pipe neutralisations (inline), it is advisable to use
a look-ahead pH/redox electrode connected to a flow meter. This gives the controller
the opportunity of reacting to flow and pH changes at an early stage in the inflow.
Fig. 15:
Scheme of an one-side batch process with a redundancy pH measurement
Fig. 16:
Scheme of an two-sided inline process with a look-ahead pH measurement
Mycom 153
One-side batch neutralisation with redundant pH measurement
pH electrode 2
pH electrode 1
Q
Q
Alcali or acid
C07-CPM153xx-16-06-00-en-010.EPS
LB
LS
LE
Mycom 153
Q
Flow
meter
F
pH elec-
trode 2
pH elec-
trode 1
Q
Alkali
Acid
C07-CPM153xx-16-06-00-en-009.EPS
Two-sided pipe flow neutralisation (inline)
with forward-locking pH measurement
