Static pressure head – Vaisala PTB210 (serial) User Manual
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User's Guide ______________________________________________________________________
10 __________________________________________________________________ M210669EN-D
NOTE
Check that the cable is not taken upwards from the barometer. This is
to prevent water flowing along the cable, and gathering close to the
feed-through.
Figure 4
Recommended Cable Position
The IP65-classified housing enables the barometer to be mounted
outdoors without any additional protection. However, please take care
that rainwater cannot plug the open pressure fitting. In such
conditions, it is recommended to connect a piece of a tube with inner
diameter of 4 mm or more to the fitting. It is also possible to use a
static pressure head, SPH10/20, which protects the pressure channel
from rain, and minimizes the effect of wind.
Static Pressure Head
Please note that the pressure fitting supplied with the transmitter is not
a static pressure head, and that the transmitter cannot be used
successfully as such in turbulent or high-speed static wind conditions.
In demanding wind conditions, it is recommended to use Vaisala's
static pressure head, SPH10/20, to which the PTB210 digital
barometers can be directly integrated. This combination provides for
accurate measurement in all wind conditions.