TESTO 330, Instruction Manual

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6 Using the product
58
Entering the heat carrier temperature:
>
Heat carrier → [Edit] → Enter value → [OK] .
Options:
> [Options] → Clipboard : Data are saved to the clipboard
> [Options] → Delete clipboard : Any data saved to the clipboard
is deleted.
> [Options] → Save : The readings are saved in a record.
> [Options] → Reset values : The entered values are deleted.
6.2.8. Differential pressure
WARNING
Dangerous mixture of gases
Danger of explosions.
> 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 readings are
outside the tolerance limits.
✓
The gas pressure set (0554 1203) must be connected.
Calling up the function:
> [ ] → Measurements → [OK] → Differential Pressure →
[OK] .
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.
1. Start measurement: [ ] .
- Pressure zeroing.
2. Connect a silicone hose to the testo 330-2 and the system to be
tested.
- The reading is displayed.
3. Quit measurement: [ ] .