Solinst Model 201 Water Level & Temperature Meter Series (100 to 1000 feet)

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Solinst Model 201 Water Level & Temperature Meter Series (100 to 1000 feet)

Availability: In stock

The 201 Water Level Temperature (WLT) Meter provides accurate temperature and level measurements in a wide range of applications. It is available in tape lengths up to 600 m (2000 ft). The WLT Meter is an excellent tool for geothermal drillers, hydrogeologists, hydrologists, aquatic biologists, ecologists and chemists, and environmental scientists.

Water level measurements can be easily read off the Solinst PVDF flat tape whilst temperature is clearly displayed on the LCD readout. The temperature sensor is suitable for use between -20°C and 125°C. Accurate temperature measurements are clearly displayed on an LCD readout on the faceplate

100, 200, and 300ft lengths always in stock, same day shipping.

Longer lengths would be special order.

If you have any questions feel free to contact our team at 1(800)201-8150 or


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The Solinst 201 Water Level Temperature (WLT) Meter with a water level temperature meter Probe features an extremely durable laser marked PVDF flat tape.  This meter is ideal for measuring static water level, as well as profiling temperature in wells, boreholes, tanks and open water.

Water Level Temperature Meter Features

  • Accurately measure temperature from -20ºC to +125ºC
  • Tape lengths to 2000 ft (600 m)
  • Corrosion and chemical-resistant PVDF flat tape
  • Standard 9V alkaline battery gives 90 hours of use
  • Automatic shut-off after 8 minutes
  • Sturdy, standalone reel with ergonomic handle and brake
  • No user calibration is required

Water Level & Temperature Applications

Water temperature has a direct effect on the biological activity of aquatic plants and animals, as well as many aspects of water quality and chemistry; therefore, it is an important parameter to monitor.

The Model 201 Water Level Temperature Meter is ideal for:

  • Profiling temperature in wells and open water
  • Detecting runoff, points of inflow, or other sources of thermal pollution
  • Early warning of changes in water quality, including dissolved oxygen levels and conductivity
  • Monitoring and predicting changes in aquatic environments
  • Geothermal drilling and studies