Level TROLL 500

Level TROLL 500

Availability: In stock

Code: RB_LT500
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The Level TROLL 500 is In-Situ’s most popular water level data logger. A cost-effective option suited to a wide variety of projects, the Level TROLL 500 logs continuous measurements of water level, water pressure, and temperature. Titanium construction offers durability and long-lasting performance in fresh or saline groundwater environments. Available in vented (gauged) pressure ranges up to 1153 ft (351 m). Integrate with telemetry systems and HydroVu Data Services for real-time feedback on all of your water monitoring sites.


  • Sub-1 inch diameter
  • Vented (gauged) pressure measurement for automatic atmospheric compensation
  • Fully sealed, all titanium construction and sensors
  • NIST calibration report
  • Flexible native communication protocols (4-20 mA, SDI-12, RS-485)
  • Customizable Rugged Twist-lock Kevlar woven cable (sold separately) suitable for use in high solvents


  • Use data immediately – Vented configuration doesn’t require corrections for barometric pressure changes.
  • Protect your data and your equipment – Solid titanium construction outlasts specially coated data loggers, even in harsh environments.
  • Simplify project setup and control – Open communications protocols easily integrate with existing telemetry systems and HydroVu Data Services, plus get 24/7 data and automatic event alerts.
  • Streamline data collection and analysis – User-friendly software minimizes setup time, with special logging modes for groundwater applications and automated graphing, reports and data export.
  • Reduce field time – Low-power loggers last 10+ years.
  • Quick and easy data-sharing – View and share data on the spot using your mobile device. Intuitive VuSitu Mobile App is an all-in-one software package that provides auto-configuration, simplified calibration, directed data analysis, and automated report creation.

Temperature rangesOperational: -20 to 80℃ (-4 to176℉ ) Storage:  -40 to 80 ℃ (-40 to 176 ℉ ) Calibrated:   -5 50℃ (23 to122℉)

Diameter | 1.83 cm (0.72 in.)

Length | 21.6cm(8.5in.)

Weight | 197g

Materials | Titanium body; Delrin ®nose cone

Battery type | 3.6v Lithium; 10 years or 2M readings

Memory | 2.0MB | Data records | 120,000 | Data logs | 50

Fastest logging rate | 2 per second

Log types | Linear, Fast Linear, and Event

Burst pressure | max. 2x range; burst > 3x range

Accuracy - Full Scale | ±0.05%

Resolution | ±0.005% FS or better

Units of measure | Pressure: psi, kPa, bar, mbar, mmHg, inHg, cmH20, inH20 Level: in., ft, mm, cm, m

Temperature Sensor

Accuracy | ±0.01℃

Resolution | 0.01℃ or better

Units of measure | Celsius or Fahrenheit

Level TROLL 500 spec sheet


  1. Selected instrument
  2. Cable (length varies based on chosen configuration) - Every cable includes patented twist-lock connectors and Kellems grip.
  3. Small desiccant
  4. Your selection of device communication option(s).