Vaisala BAROCAP® Digital Barometer PTB330 is a new generation barometer, designed for a wide range of high-end atmospheric pressure measurement.

• 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

Technical Characteristics:

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 ±0.1 hPa/year

* Defined as ±2 standard deviation limits of endpoint non-linearity, hysteresis or repeatability error.

** Defined as ±2 standard deviation limits of inaccuracy of the working standard including traceability to NIST.

*** Defined as the root sum of the squares (RSS) of endpoint non-linearity, hysteresis error, repeatability error and calibration uncertainty at room temperature.

**** Defined as ±2 standard deviation limits of temperature dependence over the operating temperature range.