Traffic weather station

Traffic signs with the integrated weather station TWS-B give warning about weather conditions in advance, locally and globally and send data to the cloud database. TWS-B informs about relative humidity. dew/frost point, air pressure, temperature and about presence and type of precipitation. Sensors are housed in solar radiation shields, protected from condensation, freezing and external effects (dust deposit and contamination).

Precipitation sensors

TWS-PRS precipitation sensor is used for fast and easy detection of presence and type of precipitation. Heating element protects the surface from fog and condensed moisture, melting snow on snow detection and dries surface for detecting precipitation off condition.
Maintenance free.
Sensing area: 9cm²
Minimum wet area: 0.05 cm²
Precipitation off time: < 5 min

Air pressure sensors

TWS-PS pressure sensor

Measurement operational range: 20-110kPa

Pressure reading noise: 1.5Pa RMS

Pressure absolute accuracy: ±0.4kPa (50 to 110kPa, 0°C to 50°C)

Pressure relative accuracy: ±0.05kPa (50 to 110kPa, -10°C to 70°C)

Temperature sensors

TWS-TS temperature sensor

Temperature accuracy: ±0.20°C from -10°C to +85°C

±0.25°C from -20°C to +105°C to 3.3V

Temperature range: -40°C to +150°C

Relative humidity sensors

TWS-HS humidity and temperature sensor.

Individually calibrated, tested and temperature compensated.

Resolution: 14 bit (0.01%RH)

Accuracy: ±2.0%RH (20~80%RH)

Response time: 7 sec

Temp coefficient: Max 0.13%RH/°C (at 10~60°C, 10~90%RH)

Operating range: 0~100%RH (non~condensing)