Vaisala PTB220 Manual de usuario descargar pdf (Pagina 43)

CHAPTER 5_______________________________________________________________INSTALLATION

VAISALA _________________________________________________________________________ 37

CHAPTER 5 INSTALLATION

Mounting

In automatic weather station applications and in other harsh operating

environments, the PTB220 series digital barometers have to be

installed inside a weather resistant or otherwise protective enclosure.

The pressure fitting must also be protected from rain as water may get

into the pressure connector and cause errors in the pressure

measurement. Please take into a consideration that the pressure fitting

supplied with the barometer is not a static pressure head and that the

barometer cannot be used successfully as such in turbulent or high

speed static wind conditions.

NOTE

The barometric pressure measurement accuracy quoted for the

PTB220 barometers does not include any wind or air conditioning

system measurement errors.

In benign room conditions, for example in laboratory measurements

no further environmental protection is required. In all cases, attention

must be paid to proper grounding of the barometer (see page 40).

The main dimensions (in mm) and recommended mounting positions

of the PTB220 barometers are shown in FIGURE 5-1.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 112 113

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Vaisala PTB220 Manual de usuario Pagina 43