Campbell Scientific CSAT3 CSAT3 3-D Sonic Anemometer - Page 46

CSAT3 Three Dimensional Sonic Anemometer CAUTION 11.1 Wicks Lightly dab the face of the transducers to remove water droplets. Applying excessive force on the face of the transducer may separate the matching layer from the brass housing. There are no user serviceable components on the CSAT3. The only time the electronics box must be opened is to change the SDM address. CSAT3 embedded code version 4 and the wicks work together to improve the performance of the CSAT3 in rainy conditions. It is up to the station operator to decide whether the wicks are necessary or not. If they are not, gently remove the wicks from the transducers, taking care not to damage or peal the matching layer (rubber tips) from the brass housing of the transducers. Remove the wicks during the winter. The wicks will accumulate snow or freezing rain to the point where the transducer face will be obscured. The CSAT3 Sonic Wick Spares Kit (p/n 28902) consists of three top wicks, three bottom wicks, adhesive, and an installation tool (see FIGURE 11-2). The installation tool is used by placing a wick over the angled end of the tool, placing the straight end of the tool gently against the transducer face, and sliding the wick down the tool onto the transducer. When installing the wicks, ensure that the wicks are located in the proper position. The top wick must be flush with the transducer face, with the wick tail located at the lowest point of the transducer (FIGURE 11-1 left). The end of the bottom transducer wick must extend above the transducer face by between one half and one mesh lines (FIGURE 11-1 right). Secure the wicks to the transducer with a drop of adhesive which is provided in the CSAT3 Sonic Wick Spares Kit (p/n 28902). Take care that the adhesive is not deposited on the transducer face. FIGURE 11-1. Proper location of the top (p/n 17388) and bottom (p/n 17389) wicks 38