Vaisala PTB210 SERIES Guide de l'utilisateur télécharger pdf (Page 12)

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.

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Vaisala PTB210 SERIES Guide de l'utilisateur Page 12