11
3 Operation
3.1.2
Setting the zero point
Before the measurements are started, the instrument can be
adjusted to the ambient conditions by setting the zero point. At
that time, no tubes should be attached to the instrument. If the
zero point is incorrectly set, other values than zero are indicated
on the display after switching on the instrument.
Note:
The zero point must be set for every individual test
mode.
Perform the following steps to set the zero point of the instrument:
z
Press the or key for approx. two seconds.
z
Use the or keys to select the menu item.
z
Confirm the selection with the
key.
The instrument returns to the
Measuring mode
. The display
shows
zero
.
