Mycom S CPM 153
6 Start-up
Hauser
39
6.5.6
Set up 1 – Temperature
The pH value requires temperature compensation for two reasons:
1.
Temperature effect of the electrode:
The electrode slope is dependent on the temperature. Therefore this effect must be
compensated for temperature changes
(temperature compensation, see below).
2.
Temperature effect of the medium:
The medium pH value is also temperature dependent. For high-accuracy
measurements, the pH value related to temperature can be entered in table form
(medium temperature compensation, see below).
F2
NC contact
NO contact
Selection acc. to NAMUR:
(only, if NAMUR is activated)
Assignment of NAMUR contacts as NC contact (= nor-
mally closed contact, opens when relay active) or NO
contact (= normally open contact, closes when relay
active).
If the NAMUR function is enabled, the Alarm, Relay 1
and Relay 2 contacts are given the following functions:
• "Failure" = Fault signalling contact (Terminals 41/42):
Failure alarms are active if the measuring system is not
working correctly or if process parameters have
reached a critical value.
• "Maintenance required " = Relay 1 (Terminals 47/48):
Warning messages become active when the measur-
ing system is working correctly but requires mainte-
nance or a process parameter has reached a value
which requires intervention.
• "Function check" = Relay 2 (Terminals 57/58): This
contact is active during calibration, maintenance, con-
figuration and during the automatic cleaning/calibra-
tion cycle.
F3
NC contact
NO contact
Selection of controller contacts as NC contact or NO
contact
(only, if controller is selected)
F4
NC contact
NO contact
Selection of limit values as NC contact or NO contact
(only, if limit values are selected)
F5
Active on
Active pulse
Contact type: Fault signalling contact
(only, when NAMUR function = off)
Active on
= active for as long as an error is present.
Active pulse
= active for 1 second when an alarm
signal occurs
F6
CHEMOCLEAN
®
is
always an NO contact.
Note in display
(only, when the full ChemoClean function is selected
in field F1, which means CCC and CCW)
With the ChemoClean function, the valves of injector CYR
10 are effected with a NO contact.
CODE
SELECTION
(default = bold)
INFO
