Comet U0110G, User Manual

Page: 54 / 73

54
IE-LGR-UxxxxM-23
U4440M, U4440G ________________________________
Measured values:
Internal temperature, relative humidity, barometric
pressure and the concentration of CO
2
in the air. Dew-
point temperature calculated from the internal
temperature and relative humidity.
Ranges:
Temperature: (-
20 to +60) °C
Relative humidity: (0 to 100) %RH without permanent
condensation
(*2)
.
Barometric pressure (absolute): 700 hPa to 1100 hPa
Concentration of CO
2
in the air: 0 to 5000 ppm
Dew-point temperature: -60
°C to +60 °C
Accuracy
(*1)
:
Temperature: ± 0.4 °C
Relative humidity:
-
sensor accuracy ±1.8 %RH
at 23
ºC in the range
of (0 to 90) %RH
-
hysteresis < ±1 %RH
- non-
linearity < ±1 %RH
- temperature error: see diagrams in Annex 8
Barometric pressure: ± 1.3 hPa at 23 °C
CO
2
concentration in the air:
50 + 0.03 × MV [ppm CO
2
at 23 °C and 1013 hPa]
Temperature dependency in range -
20...45 °C:
typ. ± (1 + MV / 1000) [ppm CO
2
/°C]
MV…measured value
Dew-
point temperature: ±1.5 °C at an ambient
temperature of T< 25
°C and RH >30 %.
For details see diagrams in Annex 3 .
Response time (air flow 1 m/s approx.)
(*2)
:
Temperature: t
63
< 2 min, t
90
< 8 min (temperature step
20 °C)
Relative humidity: t
63
< 45 s, t
90
< 4 min, t
99
<4 h.
(Measured at and constant temperature for
30% humidity step)
Barometric pressure: t
90
<44s
CO
2
concentration in the air: according to the set CO
2
Measuring interval (2 min / 10 min)
Display resolution:
Temperature incl. dew-
point temperature: 0.1 °C
Relative humidity: 0.1 %RH
Barometric pressure: 1 hPa
CO
2
concentration in air: 1 ppm
Recommended calibration interval:
1 year