TESTO 350 - Page 44

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Creating a new measurement site:
A measurement site is always created in a folder.
1. Select the folder in which the measurement site is to be
created.
2. [Options] → New measurement site→ [OK].
3. Enter values or make settings.
The following inputs/settings are possible:
Parameter Description
Measurement
site
Enter name
Application
Select application
Fuel
Select fuel
Profile
Enter diameter, length, width, height and area.
For correct measurement of the volume flow you
must set the profile and area. A volumetric flow
rate is calculated from the geometries entered
here together with the measured velocity.
Pitot Tube
Factor
The parameter "Pitot tube factor" influences the
measurement of flow speed, volume flow rate
and mass flow. The Pitot factor depends on the
type of Pitot tube used:
Straight Pitot tubes: Factor = 0.67
Prandt’l Pitot tubes (bent): Factor = 1
Humidity The parameter "Humidity" (combustion air
humidity) influences the calculation of qA (flue
gas loss) and flue gas dew point. The factory
setting is 80.0% humidity. To achieve a higher
accuracy, the values can be adjusted to the
actual ambient conditions.
Pressure
absolute
The absolute pressure influences the calculation
of flow speed, volume flow, mass flow and flue
gas dew point. The factory setting is 980mbar
(14.2 psi). To achieve a higher accuracy, the
values can be adjusted to the actual ambient
conditions.
If a CO
2
-(IR) module is installed, the
absolute pressure value measured there
will automatically be used.
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