User's Guide ______________________________________________________________________
10 ___________________________________________________________________M210983EN-A
- Chapter 6, Serial Line Communication With PTB330 Barometer: 
This chapter contains instructions for serial line use of the PTB330 
barometer.
- Chapter 7, Technical Data: This chapter provides the technical data 
of the PTB330TS.
Version Information
Related Manuals
The manuals listed below contain additional information about the 
PTB330 barometer and the HMP155 humidity and temperature probe, 
including the calculation formulas used by the products. You can 
download the manuals from www.vaisala.com.
General Safety Considerations
Throughout the manual, important safety considerations are highlighted 
as follows:
Table 1 Manual Revisions
Manual Code Description
M210983EN-A March 2009 - First version
Table 2 Related Manuals
Manual Code Description
M210855EN PTB330 User’s Guide
M210912EN HMP155 User’s Guide
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.