Eureka Trimeter Water Probe
Affordable Solution for Quality Data with Fewer Sensors
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported


Reliable data is Eureka’s top priority. The new Trimeter incorporates the feld-proven electronics of Eureka’s Manta Multiprobe and its user interface, with a smaller, lighter instrument body. Select temperature, and/or depth (vented, non-vented), along with any one of Eureka’s sensors (excluding ISE’s). For instance, choose Chlorophyll plus Temperature and Depth, or just Chlorophyll. The Trimeter gives you maximum field performance at minimal cost.



The Trimeter is suited for a wide variety of applications and environments, including the following:

  • Site-to-site profiling
  • Process monitoring
  • Unattended logging
  • Ground water
  • Telemetered deployments
  • Buoy deployments


Available sensors

  • Temperature
  • Depth
  • Conductivity/Salinity/TDS
  • pH/ORP
  • Dissolved Oxygen
  • Turbidity
  • Chlorophyll a
  • Blue Green Algae
  • Rhodamine
  • Crude Oil
  • Refined Oil
  • TDG
  • and more!



The Trimeter is compatible with all Eureka's display options, including the Ambhibian2, the ultimate compact rugged handheld for water monitoring.


Click here to learn more about the Amphibian2 handheld.

Benefits and Features

  • Choose any Eureka sensor and add Depth and/or Temperature
  • Use as a spot checker/profiler, self-powered logger, or with telemetry
  • LED indicators for sonde status (power, logging, communication)
  • Uses of the shelf “D” replaceable batteries
  • Works with all Eureka’s display options, such as the Amphibian2 (Windows Mobile), PC/Laptop (Windows), or Leapfrog Bluetooth (Android, BT Enabled Windows device)




  • Length: 12” (without battery pack) or 22” (with battery pack)
  • OD: 1.85”
  • Weight: 0.8lb, 1.8 lb with internal battery pack.
  • Durable Delrin® housing

Connectivity Options

  • Underwater cable via marine connector
  • Bluetooth connectivity via Leapfrog Bluetooth Battery


  • Holds three 1.5 VDC“D” size replaceable alkaline batteries
  • Logging time dependent on sensors, logging interval and temperature

Data Memory

  • 4 Mbytes for logged data, > 1,000,000 readings


  • Underwater cables 3 – 200 meters
  • Battery pack for self-powered logging
  • Leapfrog Bluetooth
  • Carry Case
  • Flow Cell
  • Anti-fouling Sensor Guard


  • 3 year limited warranty on sonde (covers all components, including sensors)


Related Documents