Vaisala PTB200 - Manual (Page 27)

PTB 200 26 (28)
Digital Barometers
SSD/Operating Manual 24th February 1993 PTB200-O0284-1.1
5 TECHNICAL DATA
OPERATING RANGE
Pressure range 600 ... 1100 hPa
Operating temperature range -40
°
C ... +60
°
C
Storage temperature range -60
°
C ... +60
°
C
Humidity range non-condensing
Note: 1 hPa = 1 mbar (see note below).
ACCURACY PTB 200 A PTB 201 A
Linearity * ±0.05 hPa 1)
±0.10 hPa 2)
±0.15 hPa
Hysteresis * ±0.03 hPa ±0.03 hPa
Repeatability * ±0.03 hPa ±0.03 hPa
Calibration uncertainty ** ±0.10 hPa ±0.20 hPa
Accuracy at +20
°
C *** ±0.12 hPa 1)
±0.15 hPa 2)
±0.25 hPa
Temperature dependence ±0.1 hPa ±0.1 hPa
Total accuracy (RSS) ±0.20 hPa ±0.3 hPa
Long-term stability ±0.1 hPa / a +0.2 hPa / a
* 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 pri-
mary or working standard at 1000 hPa in comparison to interna-
tional standards (NIST).
*** Defined as the root sum of the squares (RSS) of end-point non-
linearity, hysteresis error, repeatability error and calibration uncer-
tainty at room temperature.
1) 800 to 1100 hPa
2) 600 to 1100 hPa
Note. The unit hectopascal (hPa) is recommended by WMO to be
used in meteorological barometric pressure measurement (see
WMO Guide to Meteorological Instruments and Methods of Ob-
servation, Fifth edition, 1983).
The official unit of pressure is pascal (Pa) and its multiples
according to the International System of Units (SI) and
according to ISO 1000.