13
Checking the Redox Probe
During calibration, the D1C sets the command outputs to “0”. Exception: if a basic load or a manual control
variable was set, these are maintained during calibration. The standard signal outputs mA (measuring value
or correction value) are frozen. The measured value or the standard buffer value 220 mV or 465 mV is
proposed as the buffer value; this value is adjustable (arrow keys). After everything has been checked, all
error tests which refer to the measured value are restarted.
Possible values
Initial value
Increment
Lower value
Upper value
Identification code expression
Buffer values
Measured value
1 mV
-2000 mV
+2000 mV
if measured variables 2 and 5
185–265 mV
220 mV
are connected
425–505 mV
465 mV
–
+1000 mV
if measured variable 1 is connected
Complete Operating Menu / Description
D1C2-018-Redox-GB
Permanent display 1
Permanent display 2
only with control
(w = setpoint)
mea. val.
fd. fwd.:
reg. val.:
750 mV
w:
750 mV
70 %
59 %
Positive values of setting variable:
Negative values of setting variable:
Oxidant agent
Reducing agent
mV
750
= automatic timing
check probe
ORP
check probe
ORP
probe in buffer
460 mV
check probe
measurement act.
please wait !
460 mV
check probe
ORP
value:
buffer:
460 mV
465 mV
D1C2-019-Redox-GB
Permanent display 1
Error message
Condition
Effect
Measured value high
Measured value
Return to permanent display:
40 mV > buffer
Basic metering load
Measured value low
Measured value
Return to permanent display:
40 mV < buffer
Basic metering load
BA_DM_183_10_10_EN.p65
28.10.2010, 11:44 Uhr
13