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Performance – Vaisala PTB330TS User Manual

Page 83

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Chapter 7 ____________________________________________________________ Technical Data

VAISALA_______________________________________________________________________ 81

Performance

Barometric Pressure (PTB330)

Measurement range

500 ... 1100 hPa

Linearity*

± 0.05 hPa

Hysteresis*

± 0.03 hPa

Repeatability*

± 0.03 hPa

Calibration uncertainty**

± 0.07 hPa

Accuracy at +20 °C (+68 °F)**

± 0.10 hPa

Temperature dependence****

± 0.1 hPa

Total accuracy at -10 ... +40 °C
(+14 ... +104 °F)

± 0.15 hPa

Long term stability

± 0.10 hPa/year

Settling time at power-up (one sensor)

4 s

Response time (one sensor)

2 s

Acceleration sensitivity

negligible

* 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.