Operation
ProLab 2000
54
ba75577e03
11/2009
Note
You can terminate prematurely the manual
Stability control
function
with
<MENU/OK>
manually at any time. If the manual
Stability control
function is terminated prematurely, the current measurement data is
not downloaded to the interface.
Criteria
With identical measurement conditions, the following applies:
Temperature while
calibrating and
measuring
For precise ISE measurements the temperature difference between
measurement and calibration should not be greater that 2 K. Therefore,
adjust the temperature of the standard and measuring solutions
accordingly. If the temperature difference is greater the
[TempErr]
warning appears in the measured value display.
4.6.3
Settings for ISE measurements
Overview
The following settings are possible for ISE measurements:
z
Calibration record
(display)
Settings
The settings are made in the measuring menu of the ISE
measurement. To open it, activate the relevant measuring window in
the measured value display and press the
<MENU/OK>
key. After
completing the settings, switch to the measured value display with
<MODE>
.
2
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.
3
With
<MENU/OK>
activate the
Stability control
function.
[SC] flashes while the stability control is active.
As soon as a stable measured value is recognized, the current
measurement data is downloaded to the interface. The
measured values of all channels meeting the criterion for
stability control are marked by SC.
4
Using
<SC>
or
<MODE>
, release the frozen measured value.
The [SC] status display disappears. The display switches to the
previous indication.
Measuring signal
Reproducibility
Response time
Electrode
voltage
better than 0.1 mV
> 30 seconds