Campbell Scientific PWS100 PWS100 Present Weather Sensor - Page 89
Additional Sensor Connections
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Section 8. Functional Description FIGURE 8-3. Sensor unit Filter Plano-convex lens Photodiode FIGURE 8-4. Sensor unit showing light path extents (not to scale) 8.3 Additional Sensor Connections Although it is possible to use the PWS100 as a stand alone present weather sensor, its ability to distinguish particle types is improved when certain other sensors are connected to the unit. In particular a temperature and RH probe provides the system with more discriminating parameters, ensuring that solid and liquid precipitation are more clearly identified. Though general statistics would be enough on most occasions to determine particle types over minute or hour long averaging periods, individual particle analysis will benefit from these extra temperature, humidity and corresponding wet bulb temperature parameters being incorporated into the classification algorithms. The CS215PWS temperature and relative humidity probe is available as an accessory. The CS215-PWS's cable is fitted with a LEMO connector that attaches to the PWS100. 8-3