TD-Diver Water Level Data Logger

The TD-Diver is a submersible datalogger for long-term uninterrupted, real-time water level monitoring using a pressure sensor when submerged at a fixed level under the water surface. The pressure sensor measures the equivalent hydrostatic pressure of the water above the sensor diaphragm to calculate the total water depth. The Diver autonomously measures pressure and temperature and records them in its internal memory. The Diver is ideal for ground and surface water level applications.


  • Compact size: Ø 22 mm – length 110 mm
  • Memory: 72,000 records of time stamp, pressure and temperature with backup
  • Continuous and fixed length memory


  • Easy installation in almost every well
  • Cost effective frequent, long-term measuring
  • Reliable and accurate data
  • Low maintenance, no user calibration


Length 110mm
Diameter 22mm
Memory 72,000 measurements with backup
Housing Stainless steel 316L
Weight 104g
Battery Life up to 10 years (dependent on usage)
Sample Interval 0.5 second to 99 hours
Sample Methods Fixed interval



Part No DI801 DI802 DI805 DI810 Unit
Range 10 20 50 100 m
Accuracy ±0.5 ±1.0 ±2.5 ±5.0 cmH2O
Resolution 0.2 0.4 1.0 2.0 cmH2O



  Value Unit
Range -20 .. +80 °C
Accuracy ±0.1 °C
Resolution 0.01 °C