Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER - Manual (Page 95)

ProLab 4000 ORP voltage
95 ba75646e02 01/2010
Criteria With identical measurement conditions, the following applies:
1 In the measured value display, mark the channel of the ORP or
pH electrode.
2 If necessary, select the U or dU parameter with <MODE>.
3 Freeze the measured value with <SC>.
The display switches to the display of the selected channel as
necessary.
In the status line, [SC] is displayed.
4 With <OK> activate the Stability control function.
The background color is red as long as the measured value
does not meet the stability criterion.
As soon as the measured value is stable, the background color
is green. The current measurement data is downloaded to the
interface. The measured values of all channels meeting the cri-
terion for stability control are marked by SC.
Note
When you measure the electromotive force, please note that it may
take some time until the measured value is stable.
Note
You can terminate prematurely the Stability control function with
<OK> manually at any time. If the Stability control function is termi-
nated prematurely, the current measurement data is not downloaded
to the interface.
5 Using <SC> or <MODE>, release the frozen measured value.
The [SC] status display disappears.
Measured param-
eter Reproducibility Response time
ORP voltage better than 0.3 mV > 15 seconds