ProMinent DULCOMETER D1C A D Series, Operating Instructions Manual, Page: 9 / 24

9
Possible values
Initial value Increment Lower value Upper value Remarks
Buffer values Measured valve 1 mV -2000 mV +2000 mV
185–265 mV 220 mV
425–505 mV 465 mV
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.
Restricted Operating Menu / Description
Error message Condition Effect
Measured value high Measured value Return to permanent display:
40 mV > buffer Basic metering load
Measured value low Measured value "
40 mV < buffer
D1C2-011-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
D1C2-012-Redox-GB
= 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
Permanent display 1
BA_DM_183_10_10_EN.p65 28.10.2010, 11:44 Uhr 9