Chapter 2 __________________________________________________________ Product Overview  
VAISALA_______________________________________________________________________ 13 
CHAPTER 2 
PRODUCT OVERVIEW 
This chapter introduces the features, advantages, and the product 
nomenclature of PTB330. 
Introduction to PTB330 
Vaisala BAROCAP
®
 Digital Barometer PTB330 provides reliable 
pressure measurement in a wide range of applications. Digital outputs 
RS-232 (standard) or RS-422/485 (optional) can be selected. 
Alternatively, analog outputs can be chosen between current and 
optional voltage signals. A local graphical display is available as well. 
The quantities measured and calculated by PTB330 are presented in 
Table 2 on page 15. 
The PTB330 barometer is available with one, two, or three barometer 
modules. The barometer can be used successfully both in accurate 
pressure measurement applications at room temperature and in 
demanding automatic weather station applications.