wtw inoLab 740, Operating Manual

Page: 73 / 274

pH
73
6.1.3 Measured value resolution of voltage display
Using the U-AutoRng function, you can select the resolution
of the voltage measurement:
l If U-AutoRng is not active, voltages in the range of -1999
to +1999 mV are measured with a resolution of 1 mV.
l If U-AutoRng is active, voltages in the range of
+999.9 mV to -999.9 mV are measured with a resolution
of 0.1 mV.
The rest of the measuring range remains unchanged.
Note
If you expect voltages outside the range +999.9 mV to -
999.9 mV and want to connect a recorder, deactivate U-
AutoRange. Otherwise, the recorder scaling at the range
limits will change.
Measured value
resolution,
U
1 Switch to the Menu mode.
2 Use
4 6
to select the main Meas menu.
3 Select the pH setup menu item with
82
.
4 Confirm the pH setup menu item with
g
.
5 Select the U-AutoRng menu item with
82
.
6 Confirm the U-AutoRng menu item with
g
.
The U-AutoRng function is active (
✔
).
Voltages in the range between -999.9 and +999.9 are
displayed with a resolution of 0.1 mV.
7 Terminate the Menu mode with
m
.