Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 31)

Section 6. Installation
6.3.5 Desiccant
The desiccant bags should be removed from the plastic bags in which they are
shipped before placing them inside the enclosure. Two 100 g bags of desiccant
are supplied with the PWS100. Desiccant use depends on your application (see
below). The desiccant should be firmly strapped to the DSP cover inside the
PWS electronics enclosure using the strap provided and as shown in Figure
6-6.
FIGURE 6-6. Mounting the desiccant pack on the DSP cover
The second bag of desiccant should be re-sealed in the plastic shipping bag as a
replacement for the initial bag
6.3.6 Communication Options
The communications options are RS-232, RS-422 and RS-485. Baud rate is
selectable between 300 bps and 115.2 kbps. The communications are set on a
series of dip switches on the DSP board itself. The get to the board the DSP
cover must be removed as shown in Figure 6-7. Unscrew the four retaining
screws and carefully lift off to expose the board as shown in Figure 6-8.
6-9