MSB780(X) - User’s Guide
Table 21 – continued from previous page
Acronym Meaning Available units
DP12
pressure difference between transducer 1 and 2
hPa, inHg, psi, torr, bar,
mbar, mmHg, kPa, Pa,
mmH2O, inH2O
DP13
pressure difference between transducer 1 and 2
hPa, inHg, psi, torr, bar,
mbar, mmHg, kPa, Pa,
mmH2O, inH2O
DP23
pressure difference between transducer 1 and 2
hPa, inHg, psi, torr, bar,
mbar, mmHg, kPa, Pa,
mmH2O, inH2O
T
temperature from external probe C, F, K
RH
relative humidity from external probe %
Tw
wet bulb temperature from external probe C, F, K
w
water ratio from external probe g/kg
Td
dew point from external probe C, F, K
bs1T
temperature of transducer 1 C, F, K
bs2T
temperature of transducer 2 C, F, K
bs3T
temperature of transducer 3 C, F, K
iRH
humidity of measured air %
iT
temperature of measured air and internal tem-
perature in barometer
C, F, K
iDP
dew point of measured air C, F, K
10.2 Performance
Barometric pressure range 500 hPa to 1100 hPa (or as specified)
Linearity < 0.02 hPa
Hystersis < 0.02 hPa
Accuracy (at 23
◦
C) 0.10 hPa
Total accuracy 0.15 hPa (−50
◦
C to +80
◦
C)
Typical long-term stability better than ± 0.05 hPa/year
Calibration Traceability National standard
Warm-up time after power-up less than 7 seconds
83
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