Vaisala PTB330 Technical data
Vaisala Instruments Catalog 2009
Ref. B210768EN rev. A
P.O. Box 26, FI-00421 Helsinki, FINLAND
Email: industrialsales@vaisala.com
Fax: +358 9 8949 2485
www.vaisala.com/PTB330
PTB330 Digital Barometer for Professional
Meteorology, Aviation, and Industrial Users
Features/Benefits
•
Vaisala BAROCAP® sensor
•
Accurate measurement
•
Excellent long-term stability
•
Added reliability through
redundancy
•
Graphical trend display with
1-year history data
•
Height and altitude corrected
pressure (QFE, QNH)
•
For professional meteorology and
aviation, laboratories, demanding
industrial applications
Tel: +358 9 894 91
Vaisala BAROCAP® Digital Barometer PTB330 with a new trend display.
Vaisala BAROCAP® Digital Barometer
PTB330 is a new generation barometer,
designed for a wide range of high-end
atmospheric pressure measurement.
e pressure measurement of the
PTB330 is based on the Vaisala
in-house, silicon capacitive, absolute
pressure sensor - the Vaisala BAROCAP®
Sensor. It provides high measurement
accuracy and excellent long-term
stability.
High accuracy
e PTB330 series features extremely
high accuracy. Class A barometers for
the most demanding applications are
ne-adjusted and calibrated against
a High Precision Pressure Calibrator.
Class B barometers are adjusted and
calibrated using electronic working
standard. All the PTB330 barometers
come with a NIST traceable, factory
calibration certicate.
Reliability through
redundancy
According to customers’ choice, the
PTB330 can incorporate one, two or
three BAROCAP® sensors. When two or
three sensors are used, the barometer
continuously compares the readings
of the pressure sensors against one
another and provides information
on whether these are within the
set internal dierence criteria. is
unique feature provides redundancy in
pressure measurement.
us, users also get a stable and reliable
pressure reading at all times as well as
a pre-indication of when to service or
recalibrate the barometer.
In addition to instant pressure, the
PTB330 also provides the WMO
pressure trend and tendency code.
QNH and QFE
e PTB330 can be set to compensate
for QNH and QFE pressure used
especially in aviation. e QNH
represents the pressure reduced to
sea level, based on the altitude and
temperature of the observation site.
e QFE represents the height
corrected pressure of small dierences
in altitude, for example, the air pressure
at the aireld elevation.
Data transfer
e data can be transferred to a PC by
using MI70 Link Interface Software.
You can examine the recorded data
easily in a Microsoft® Windows
environment and transfer it further to a
spreadsheet program, such as Microsoft®
Excel, in numeric or graphical format.
Graphical display
e PTB330 features a multi-lingual,
graphical display allowing users to
monitor measurement trends. e
graph is updated automatically while
measuring and it provides a one-year
measurement history.
Applications
e PTB330 can be used successfully
for aviation, professional meteorology,
and for demanding industrial pressure
measurement applications such
as accurate laser interferometric
measurement and exhaust gas analysis
in engine test benches.
114
Vaisala Instruments Catalog 2009
Ref. B210768EN rev. A
PTB330
Technical Data
BAROMETRIC PRESSURE
Performance
Barometric pressure range 500 ... 1100 hPa
Class A Class B
Linearity* ±0.05 hPa ±0.10 hPa
Hysteresis* ±0.03 hPa ±0.03 hPa
Repeatability* ±0.03 hPa ±0.03 hPa
Calibration uncertainty** ±0.07 hPa ±0.15 hPa
Accuracy at +20 °C (+68 °F) *** ±0.10 hPa ±0.20 hPa
Barometric pressure range 50 ... 1100 hPa
Class B
Linearity* ±0.20 hPa
Hysteresis* ±0.08 hPa
Repeatability* ±0.08 hPa
Calibration uncertainty** ±0.15 hPa
Accuracy at +20 °C *** ±0.20 hPa
Temperature dependence****
500 ... 1100 hPa ±0.1 hPa
50 ... 1100 hPa ±0.3 hPa
Total accuracy -40 ... +60 °C (-40 ... +140 °F)
Class A Class B
500 ... 1100 hPa ±0.15 hPa ±0.25 hPa
50 ... 1100 hPa ±0.45 hPa
Long-term stability
500 ... 1100 hPa ±0.1 hPa/year
50 ... 1100 hPa ±0.2 hPa/year
* Dened as ±2 standard deviation limits of endpoint nonlinearity, hysteresis or repeatability error.
** Dened as ±2 standard deviation limits of inaccuracy of the
working standard including traceability to NIST.
*** Dened as the root sum of the squares (RSS) of endpoint
non-linearity, hysteresis error, repeatability error and calibration
uncertainty at room temperature.
**** Dened as ±2 standard deviation limits of temperature
dependence over the operating temperature range.
Operating environment
Pressure range 500 ... 1100 hPa, 50 ... 1100 hPa
Temperature range
operating -40 ... +60 °C (-40 ... +140 °F)
with local display 0 ... +60 °C (+32 ... +140 °F)
Pressure tting barbed tting for 1/8” I.D. tubing
Maximum pressure limit 5000 hPa abs.
Compliance EMC standard EN61326-1:1997+
or quick connector with shuto
valve for 1/8” hose
Am1:1998 + Am2:2001: Industrial
Environment
Mechanics
Housing material G AlSi10 Mg (DIN 1725)
Housing classication IP65
Weight 1 - 1.5 kg
Analog output (optional)
Current output 0 ... 20 mA, 4 ... 20 mA
Voltage output 0 ... 1 V, 0 ... 5 V, 0 ... 10 V
Accuracy at pressure
range
at +20 °C ±0.30 hPa ±0.40 hPa
at -40 ... +60 °C ±0.60 hPa ±0.75 hPa
500 ... 1100 hPa 50 ... 1100 hPa
Accessories
Serial interface cable 19446ZZ
USB-RJ45 serial connection cable 219685
Software interface kit 215005
Wall mounting kit 214829
Outdoor installation kit (weather
shield)
Installation kit for pole or pipeline 215108
Power supply module POWER-1
Temperature compensated analog
output module
Isolated RS-485 module RS485-1
215109
AOUT-1T
Dimensions
in mm (inches)
Inputs and outputs
Supply voltage 10 ... 35 VDC
Supply voltage sensitivity negligible
Typical power consumption at +20 °C
24 VDC, one pressure sensor)
(U
in
RS-232 25 mA
RS-485 40 mA
U
out
I
out
display and backlight +20 mA
Serial I/O RS232C, RS485/422
Pressure units hPa, mbar, kPa, Pa inHg,
Resolution 0.01 hPa 0.1 hPa
Settling time at power-up
(one sensor) 4 s 3 s
Response time (one sensor) 2 s 1 s
Acceleration sensitivity negligible
Pressure connector M5 (10-32) internal thread
0, mmHg, torr, psia
mmH
2
Class A Class B
25 mA
40 mA
BAROCAP® is a registered trademark of Vaisala.
Specications are subject to change without prior notice.
©Vaisala Oyj
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