Manual
CS100 Barometric Pressure Sensor 
Remember that for the sensor to detect the external ambient pressure, the 
enclosure must vent to the atmosphere (i.e., not be hermetically sealed).  
Enclosures purchased from Campbell Scientific properly vent to the 
atmosphere. 
For user-supplied enclosures, it may be necessary to make a vent 
hole on the outer wall. In this situation, do not make the hole on 
one of the vertical side walls, as wind blowing around it can 
cause transient changes in pressure. 
NOTE 
7.2  Wiring 
7.2.1  Datalogger Connection 
Before connecting the barometer to the datalogger, a yellow warning label 
must be removed from the pigtails (see FIGURE 7-2). The warning label 
reminds the user of the importance of properly connecting the barometer to the 
datalogger. Proper wiring is shown in TABLE 7-1. 
FIGURE 7-2. CS100 as removed from the box 
Yellow Warning Label 
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