USER'S GUIDE____________________________________________________________________  
4 ___________________________________________________________________ M210843EN-C 
 
General Safety Considerations 
Throughout the manual, important safety considerations are 
highlighted as follows: 
WARNING 
Warning alerts you to a serious hazard. If you do not read and follow 
instructions very carefully at this point, there is a risk of injury or 
even death. 
 
CAUTION 
Caution warns you of a potential hazard. If you do not read and 
follow instructions carefully at this point, the product could be 
damaged or important data could be lost. 
 
NOTE 
Note highlights important information on using the product. 
 
Feedback 
Vaisala Customer Documentation Team welcomes your comments 
and suggestions on the quality and usefulness of this publication. If 
you find errors or have other suggestions for improvement, please 
indicate the chapter, section, and page number. You can send 
comments to us by e-mail: manuals@vaisala.com 
Product Related Safety Precautions 
The CG31 delivered to you has been tested for safety and approved as 
shipped from the factory. Note the following precautions: 
CAUTION 
Do not modify the unit. Improper modification can damage the 
product or lead to malfunction.