Meteorological Sensors Field Station Sensors 1 Wind Speed

Meteorological Sensors

Field Station Sensors 1. Wind Speed and Wind Direction 2. Ambient Air Temperature and Relative Humidity 3. Runway / Ground Temperature 4. Precipitation 5. Barometric Pressure 6. Data Logger 7. Backup Wind Sensors 8. Transmissometer Sensor 9. Ceilometer Sensor 10. FS 11 P

Meteorological Sensors 1. Wind Speed and Direction 2. Air Temperature and Relative Humidity 3. Barometer Pressure 4. Surface Temperature 5. Rain Gauge

Automatic Weather Station : MAWS 301 330

Air Temperature and Relative Humidity Air temperature ����� platinum type (PT 100) sensor. - ����� (+/- 0. 283 °C at +40 °C) - Relative humidity ����� thin film type sensor. - ����� 0. … 100%. - ����� (+/-) 1 %below 90 %RH ��� (+/-) 1. 7 %������� 90… 100 RH. ���� : ���������� 1. 80 m. Sending Mode

Runway / Ground Temperature Sensor ������������������� platinum resistance (Pt-100) - ����� -80 C…+80 C. - ������� 0. 385 Ohm/C. Sending Mode ���������� (Autosend mode)

Wind speed and Direction

Data Logger MAWS 301 Field Stations (QML 201) ��������� Touchdown (TDZ) zones ��������������� wind, pressure Temperature/humidity ��� precipitation sensors ������ CDU ���������������� sensors ��������� Sending Mode

Backup Wind Sensor

Transmissometer Sensor : LT 31

������ RVR Visibility Sensor Background luminance Sensor Runway Light Setting Interface วดคา วดปรมาณแสง ตงไวท ทศนวสย RVR algorithm 100 % RVR Value

PWD Forward Scatter Sensor : PWD 22 คาทศนวสย (Visibility) สามารถวดหาคาไดจากการวดของ PWD Forward Scatter Sensor แลวนำคาทวดไดนไปคำนวณหาคา RVR • PWD 22 measures light scattered at an angle of 45°. This angle • produces a stable response in various types of natural fog. • Precipitation droplets scatter light in a different manner as fog • • and their contribution to visibility must be analyzed separately. PWD 22 can detect and measure precipitation droplets from the optical signal and use this information in processing the scatter measurement results. PWD 22 has a small sample volume of about 0. 1 liters (see Figure 3 above). This allows for independent particles to be measured even at relatively heavy precipitation intensities. The signal levels from even the smallest precipitation droplets can also be detected.

������� 1. Transmitter Unit (LTT 211) 2. Receiver Unit (LTR 211) 3. Background Luminance Sensor (LM 21) 4. PWD Forward scatter Sensor

PWD 22 Present Weather Detector

Ceilometer CL 31

Components of CL 31

CL 31 Measuments

Coffee Break

LLWAS

VHF 163 MHz - Backup Wind 170 MHz - Ceilometer CL 31

UHF 460 MHz - MAWS 301 - LLWAS

Base Radio

Radio modem SATELLINE-3 AS Interfaces RS-232, RS-422 or RS-485