Vaisala PTB220 - Manual (Page 77)

C HAPTER 9____________________________________________________ TECHNICAL SPECIFICATIONS
V AISALA _________________________________________________________________________ 71
CHAPTER 9
TECHNICAL
SPECIFICATIONS
Barometric pressure
Operating range
Pressure range s 50...1100 hPa, 500...1100 hPa
Temperature range
operating -40 ... +60 ºC
with local display 0 ... +60 ºC
storage -60 ... +60 ºC
with local display -20 ... +60 °C
Humidity range non-condensing
Accuracy
0.1 % R
1
class A class B
Linearity *
± 0.05 hPa ± 0.05 hPa ± 0.10 hPa
Hysteresis *
± 0.02 hPa ± 0.03 hPa ± 0.03 hPa
Repeatability *
± 0.02 hPa ± 0.03 hPa ± 0.03 hPa
Calibration uncertainty **
± 70 ppm ± 0.07 hPa ± 0.15 hPa
Accuracy at +20 *C ** * ±100 ppm ± 0.10 hPa ± 0.20 hPa
Temperature dependence ****
± 0.1 hPa ± 0.1 hPa
Total accuracy ± 0.15 hPa ± 0.25 hPa
Long-term stability ± 0.1 hPa / year
1 Accuracy specifications of Class A barometer in the measuring area
limited to 800 ... 1100 hPa pressure range and temperature of +20 ºC.
* Defined as the ±2 standard deviation limits of end-point non-
linearity, hysteresis error or repeatability error.
** Defined as ±2 standard deviation limits of inaccuracy of the
working standard including traceability to NIST.
± 0.20 hPa
± 0. 08 hPa
± 0. 08 hPa
± 0.20 hPa
± 0.3 0 hPa
± 0. 30 hPa
± 0. 45 hPa
0.20 hPa/year
Pressure range: 500...1100 hPa 50...1100 hPa