TESTO 557s - Page 23

8 Using the product
23
The testo 550s or testo 557s manifold is used to carry out the
measurement.

The instrument is switched on and the measurement menu is
displayed.

Hoses are connected.
1
Press [Menu/Enter].
2
Press [▲] / [▼] to select Measuring
Mode and press [Menu/Enter] to
confirm.
-
The
Measuring Mode
menu is
displayed.
3
Press [▲] / [▼] to select Pressure
Leak Test and press [Menu/Enter]
to confirm.