6 Using the product
37
- The display automatically switches to the measurement protocol
view.
The HVAC protocol contains multiple views, which can be changed
via[ ].
• Values Result: End result (mean value) and deviation of the
flow velocity and volumetric flow parameters.
• Graphic Result: Channel view with the results per measuring
point.
• HVAC program parameters: preset parameters for the
measurement (e.g. channel geometry).
• Density parameters: preset values for calculating the density
(temperature, humidity, absolute pressure).
6.6.5. Turbulence measurement
A connected turbulence probe 0628 0143 enables the turbulence to
be calculated for the flow value in accordance with DIN EN 13779.
The turbulence probe 0628 0143 has an internal absolute pressure
sensor used to carry out automatic compensation. There is no need
to enter an absolute pressure value here.
Preparing for measurement
✓ Turbulence probe 0628 0143 is connected.
From firmware 1.11 onwards, up to 3 turbulence probes can be
connected at the same time.
Carrying out a measurement
1. Press [ ].
- Explorer structure is displayed.
2. Select/create required measuring point.
The settings in the measuring point have no effects on the
measurement result.
3. [ ] → New turbulence measurement.
- Turbulence calculation window is opened.
4. Start measurement: [ ].
- Turbulence determination is started. It takes 180 sec., but can
also be ended early.
- When measurement is completed: turbulence is displayed in %,
calculated according the formula:
=
1
1
()
100
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