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OTT HydroSystems

Stand-alone compact system for hydrological applications

OTT HydroSystems offer a decisive price advantage compared to individual configured systems. The IP-enabled and highly energy-efficient datalogger OTT netDL 500 is the core of the system. Several SDI-12 sensors may be connected to the rugged logger, as it has up to 40 channels. Optionally, the measured data may be remotely transferred via the built-in GSM/GPRS modem or via satellite. The required antennas are already included in the system.

  • Turn-key solutions for stand-alone measuring stations
  • Gauging station, Pole mount
  • Battery, Solar
  • Cellular, Satellite
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Compact, turn-key, and convenient:

  • All components are pre-installed, pre-wired, and pre-configured – minimum installation operations required.
  • Standardized configuration resulting in particularly attractive value for money.
  • Rugged lockable stainless steel system cabinet – particularly designed for field applications.
  • Cabinet enclosure fitted with breathing gland for sufficient ventilation and drainage.
  • Powerful IP datalogger providing efficient power management.
  • Convenient stainless steel mast mounting bracket – for easy installation to masts of 1"… 4" (accessory).
  • Alternatively stainless steel wall bracket for safe wall mounting, e.g. in gauge station (accessory).


Quick and easy installation of solar powered hydrological measuring stations:

  • Ideally suited for remote locations
  • Reliable and efficient water level measurement with OTT CBS, e.g. in streams, rivers, canals, lakes, or reservoirs
  • Measurement of water level, discharge, water quality or precipitation using any type of SDI-12 sensor
  • Remote data transfer via GSM/GPRS, Internet, and satellite





Dimensions (W x H x D) 380 mm x 500 mm x 210 mm (15 in x 20 in x 8 in)
Housing material Stainless steel
Protection IP65
Breathing gland
Max. dimension battery (W x H x D) 190 mm x 175 mm x 130 mm (7.5 in x 7 in x 5 in)
Power Supply
Solar controller OTT PR1205
Optional: Solar panel 12 V/30 W
Data logger
IP Datalogger OTT netDL 500
Sat transmitter option
Sensors incl.
GOES / Meteosat OTT HDR G3 / M3
Water level sensor OTT CBS - bubble sensor for indirect water level measurement
Temperature range
Cabine components included -25 °C ... +50 °C (-13°F to 122°F)
Standard overvoltage protection
EN 61000-3-2 -> EN 55022 Class B (30 ... 1000 MHz)
EN 61000-4-2 Level 3; 8 kV air, 6 kV contact (ESD protection)
EN 61000-4-3 Level 3; 10 V/m (protection from RF fields);Environment class 3
EN 61000-4-4 Level 4; 4 kV (EFT protection); Installation class 4
EN 61000-4-5 Level 4; 4 kV (voltage spike/lightning); Installation class 5
EN 61000-4-6 Level 3; 10 Veff (protection from conductive HF interference);Installation class 3
EN 61000-4-8 Level 4; 30 A/m; Environment class 4 Enhanced overvoltage protection (optional)
Blitzductor Solar Dehn DR M 2P 60
24 V sensors Dehn BlitzductorBXT ML2 BE S 24
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