Digital Barometer


Vaisala, PTB3302S Digital Barometer for Professional Meteorology

Description

PTB330 Series Digital Barometer for Professional Meteorology, Aviation, and Industrial Users
Vaisala BAROCAP® Digital Barometer PTB330 Series is a new generation barometer, designed for a wide range of high-end atmospheric pressure measurement. The pressure measurement of the PTB330 Series 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.
  • Vaisala BAROCAP® sensor
  • Accurate measurement
  • Excellent long-term stability
  • Added reliability through redundancy
  • Graphical trend display with 1-year history data
  • Altitude corrected pressure (QFE, QNH)
  • For professional use in meteorology, aviation, laboratories, and demanding industrial applications
Highly Accurate
The PTB330 Series series is highly accurate. The Class A barometers for the most demanding applications are fine-tuned and calibrated against a high-precision pressure calibrator. Class B barometers are adjusted and calibrated using electronic working standard. All the PTB330 Series barometers come with a NIST traceable, factory calibration certificate
Reliability through Redundancy
According to customers' choice, the PTB330 Series 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 difference criteria. This unique feature provides redundancy in pressure measurement. Thus, 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.
QNH and QFE
The PTB330 Series can be set to compensate for QNH and QFE pressure used especially in aviation. The QNH represents the pressure reduced to sea level, based on the altitude and temperature of the observation site. The QFE represents the height corrected pressure of small differences in altitude, for example, the air pressure at the airfield elevation.

Specification

Technical Specifications for PTB330 Series
Barometric pressure measurement
Measurement range500 ... 1100 hPa or 50 ... 1100 hPa
Accuracy at +20 °C (serial output)
500 ... 1100 hPaClass A: ±0.10 hPa; 
Class B: ±0.20 hPa
50 ... 1100 hPa±0.30 hPa
Total accuracy at -40 ... +60 °C (serial output)
500 ... 1100 hPaClass A: ±0.15 hPa;
Class B: ±0.25 hPa
50 ... 1100 hPa±0.45 hPa
Accuracy for 500 ... 1100 hPa (analog output)
at +20 °C±0.30 hPa
at -40 ... +60 °C±0.60 hPa
Accuracy for 50 ... 1100 hPa (analog output)
at +20 °C±0.40 hPa
at -40 ... +60 °C±0.75 hPa
Temperature dependence
500 ... 1100 hPa±0.1 hPa
50 ... 1100 hPa±0.3 hPa
Long-term stability
500 ... 1100 hPa±0.1 hPa/year
50 ... 1100 hPa±0.2 hPa/year
SensorVaisala BAROCAP®
Operating environment
Temperature
operating-40 ... +60 °C (-40 ... +140 °F)
with local display0 ... +60 °C (+32 ... +140 °F)
Inputs and outputs
Supply voltage10 ... 35 VDC
Typical power consumption at +20 °C (Uin 24 VDC, one pressure sensor)
RS-23225 mA
RS-48540 mA
Uout25 mA
Iout40 mA
display and backlight+20 mA
Serial outputsRS-232C, RS-485 (optional)
Analog outputs (optional)0 ... 20 mA, 4 ... 20 mA, 0 ... 1 V, 0 ... 5 V, 0 ... 10 V
Menu languagesEnglish, finnish, French, German, Japanese, Russian, Spanish, Swedish
Calculated quantities
Pressure parameters
QNH Pressure
QFE Pressure
Height corrected pressure HCP
WMO Pressure tendency code

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