Operating Manual
Smart Weather Sensor
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
45
13.1 Measuring Range / Accuracy
13.1.1 Air temperature
Measurement process:
NTC
Measuring range:
-50°C ... +60°C
Resolution:
0.1°C (-20°C...+50°C), otherwise 0.2°C
Sensor accuracy:
+/- 0.2°C (-20°C ... +50°C), oth/-0.5°C (>-30°C)
Sampling rate:
1 minute
Units:
°C; °F
13.1.2 Humidity
Measurement process:
Capacitive
Measuring range:
0 ... 100% RH
Resolution:
0.1% RH
Accuracy:
+/- 2% RH
Sampling rate:
1 minute
Units:
% RH; g/m³; g/kg
13.1.3 Dewpoint Temperature
Measurement process:
Passive, calculated from temperature and humidity
Measuring range:
-50°C ... +60°C
Resolution:
0.1°C
Accuracy:
Co/- 0.7°C
Units:
°C; °F
13.1.4 Air Pressure
Measurement process:
MEMS sensor - capacitive
Measuring range:
300 ... 1200hPa
Resolution:
0.1hPa
Accuracy:
+/- 0.5hPa
(0 … +40°C)
Sampling rate:
1 minute
Unit:
hPa
13.1.5 Wind Speed
Measurement process:
Ultrasonic
Measuring range:
0
… 75m/s (WS601-UMB: 0 … 30m/s)
Resolution:
0.1m/s
Accuracy:
±0.3 m/s or ±3% (0...35 m/s)
±5% (>35m/s) RMS
Response threshold:
0.3 m/s
Internal sampling frequency:
15Hz
Instantaneous value:
1 sec / 10sec
Output rate for average and
peak gust values:
1min
– 10min (peak calculated from 1sec values)
Units:
m/s; km/h; mph; kts
13.1.6 Wind Direction
Measurement process:
Ultrasonic
Measuring range:
0
– 359.9°
Resolution:
0.1°
Accuracy:
< 3° (> 1m/s) RMSE
Response threshold:
0.3 m/s
Internal sampling frequency:
15Hz
Instantaneous value:
1 sec / 10sec
Output rate for average and
peak gust values:
1min
– 10min (peak calculated from 1sec values)