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.
