Weather station

OTLM weather station is used to accurately measure weather conditions along the overhead line (OHL). Meausrements from weather station and OTLM device are then used for Ampacity calculation.

Key features:

  • Automatic data collection
  • Configurable sample package interval (3-30 minutes)
  • Automatic data transfer using GPRS
  • Local data archiving during periods of communication failure
  • Remote reconfiguration, upgrade
  • Alarms 

Weather station technical specification:

Wind speed
Range: 0 – 60 m/s, Accuracy: ± 2% (@12 m/s), Resolution: 0.01 m/s

Wind direction
Range: 0 – 359 °, Accuracy: ± 3 ° (@12 m/s), Resolution: 1 °, Sensor type : Ultrasound, no moving parts

 

Air temperature
Range: -35 °C – 70 °C, Accuracy: ± 0.1 °C, Resolution: 0.1 °C

Relative Humudity
Range: 0% – 100 %, Accuracy: ± 0.8 % ( @ 23°C), Resolution: 0.1%

Barometric Pressure
Range: 600 – 1100 hPa, Accuracy: ± 0.5 hPa, Resolution: 0.1 hPa

Sun radiation – pyranometer (Mesa MS-020/VM)
Measurement range: 0 – 1400 W/m2, Sensitivity range: 300 – 1100 nm

Housing and mounting conditions:

  • Double wall container for thermal protection
  • Outer dimensions min. 420 x 560 x 210 mm
  • Container door sensor (alarming)
  • Total weight (sensors, solar panels, container with controllers and battery, mounting frame): up to 40 kg[/squeeze_box]

Power source:

  • Solar panels (ET M56620 20Wp, ET Solar, 3 panels)
  • Battery (Sonnenschein Gel 12V, 17Ah)
  • Regulator (Steca Solstum)
  • Autonomous operation (w/o solar panels): up to 25 days @5 °C+.
  • Monitoring batetery voltage level [/squeeze_box2]