PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
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Section 8. Functional Description<br />
FIGURE 8-3. <strong>Sensor</strong> unit<br />
Filter<br />
Plano-convex lens<br />
Photodiode<br />
FIGURE 8-4. <strong>Sensor</strong> unit showing light path extents (not to scale)<br />
8.3 Additional <strong>Sensor</strong> Connections<br />
Although it is possible to use the <strong>PWS100</strong> as a stand alone present weather<br />
sensor, its ability to distinguish particle types is improved when certain other<br />
sensors are connected to the unit. In particular a temperature and RH probe<br />
provides the system with more discriminating parameters, ensuring that solid<br />
and liquid precipitation are more clearly identified. Though general statistics<br />
would be enough on most occasions to determine particle types over minute or<br />
hour long averaging periods, individual particle analysis will benefit from these<br />
extra temperature, humidity and corresponding wet bulb temperature<br />
parameters being incorporated into the classification algorithms. The CS215-<br />
PWS temperature and relative humidity probe is available as an accessory.<br />
The CS215-PWS’s cable is fitted with a LEMO connector that attaches to the<br />
<strong>PWS100</strong>.<br />
8-3