Water Level Temperature Meter

Model 201 Water Level Temperature Meter

solinst model 201 water level temperature meter


solinst pvdf laser marked flat tape for water level meters

LM2: Feet and tenths: with markings every 1/100 ft.
LM3: Meters and centimeters: with markings every mm


The Model 201 Water Level Temperature Meter (WLT) measures static water levels, as well as temperature; ideal for profiling temperature in wells, boreholes and open water.

Accurate temperature measurements are clearly displayed on an LCD readout on the faceplate. Temperature measurements are read from -20ºC to +125ºC with an accuracy of ±0.10ºC from -5ºC to +50ºC and ±0.50ºC outside of that range. No user calibration is required.

The LCD menu is easy to operate. When profiling temperature, the buzzer is simple to deactivate as the probe is lowered to depth.

Water level and probe depth measurements are read from the Solinst durable PVDF flat tape, which is accurately laser marked every 1/100 ft. or each millimeter. Tape lengths are available up to 2000 ft. (600 m).

Electronics are powered by a standard 9V battery, providing 90 hours of on-time. There is an auto-off after 8 minutes of inactivity.

Even small temperature fluctuations can have a great affect on the biological activity of aquatic organisms. Temperature also has immediate affects on the chemistry, and therefore the quality of water. As such, temperature 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 studies

Length Options:

Small Reel 100 ft. 30 m
  200 ft. 60 m
  300 ft. 100 m
Medium Reel 500 ft. 150 m
  750 ft. 250 m
  1000 ft. 300 m