6 Using the product
63
6.2.7. Differential pressure
Dangerous mixture of gases
Danger of explosion.
> Make sure there are no leaks between the sampling point and
the measuring instrument.
> Do not smoke or use naked flames during measurement.
Do not measure for longer than 5 min, as the drift of the
pressure sensor could have the effect that the meas. views
are outside the tolerance limits.
✓ The gas pressure set (0554 1203) must be connected.
Calling up the function:
Performing the measurement:
✓ At the start of the measurement, the instrument's pressure
socket must be unpressurised (e.g. instrument must not be
connected to the system to be tested), as the pressure sensor
has to be zeroed first.
- Pressure zeroing.
2. Connect a silicone hose to the testo 330-2 and the system to be
tested.
- The meas. view is displayed.
Options:
> [Options] → Clipboard: Data are saved to the clipboard:
> [Options] → Delete clipboard: Any data saved to the clipboard
is deleted.
> [Options] → Save: The meas. views are saved in a protocol.
> [Options] → Show Graphic: The meas. views are displayed in
form of a line graph.
> [Options] → Readings Display: (This function is not available
during a measurement): The measurement view menu is
opened.
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