Vaisala PTB330 - Manual (Page 17)

Chapter 2 __________________________________________________________ Product Overview
VAISALA _______________________________________________________________________ 15
Table 2 Quantities Measured by PTB330
Quantity Abbreviation
Pressure (measures average
pressure from P
1
, P
2
, and P
3
)
P
Pressure from barometer
module 1 or 2 or 3 P
1
, P
2
, and P
3
Temperature of barometer
module 1 or 2 or 3 T
P1
, T
P2
, and T
P3
Pressure trend (includes
pressure tendency on display) P
3h
Pressure difference (P
1
-P
2
) ΔP
12
Pressure difference (P
1
-P
3
) ΔP
13
Pressure difference (P
2
-P
3
) ΔP
23
(available on serial port
only)
QNH pressure QNH
QFE pressure QFE
Height Corrected Pressure HCP
Pressure tendency (available on
serial port only) A
3h
Outer Structure of the Barometer
Figure 1 Barometer Body
Numbers refer to Figure 1 above:
1 = Cable for signal/powering Ø 8 ... 11 mm
2 = Pressure port
3 = Cable for optional power supply/relay module Ø 8 ... 11 mm
4 = Cover LED
5 = Display with keypad (optional)
6 = Cover screw (4 pcs)