In-Situ Aqua Troll® 400 Multiparameter Instrument

Configuring your instrument can be time-consuming, frustrating, and expensive. The compact Aqua TROLL 400 Instrument simplifies decision making by offering a standard suite of six sensors. The durable probe continuously measures 12 parameters:

  • Actual and specific conductivity, salinity, total dissolved solids, resistivity, and density
  • Dissolved oxygen
  • ORP
  • pH
  • Temperature
  • Water level and water pressure (absolute)

Leveraging proven technologies, like the patented, EPA-approved optical RDO® Sensor, the instrument decreases setup, calibration, and maintenance time. Ideal for long-term groundwater and surface-water monitoring projects, you can deploy the probe for months of unattended operation. Partner with In-Situ to meet the challenges of reduced manpower and 24/7 demand.

Confidence in Your Data

  • Field-tested sensor technologies lower your total cost of ownership by providing stable, accurate results.
  • Sensors are factory-calibrated with NIST®-traceable standards (where applicable).
  • DO readings are automatically compensated for salinity. With the Con TROLL® PRO System, DO and level readings are automatically compensated for barometric pressure.

Greater Efficiency and Flexibility

  • Easy installation reduces errors and training time, while increasing productivity.
  • With open communication protocols, the instrument easily interfaces with your current system. Access data anytime with a radio, controller, data logger, sampler, telemetry system, or SCADA/PLC system.
  • Long-lasting calibrations reduce site visits.
  • The narrow-diameter instrument operates in fresh, marine, and process waters.

Outstanding Customer Service

  • Free application and deployment guidance
  • Free, 24/7 technical support

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  • Long-term ground- and source-water monitoring
  • Coastal deployments–estuaries and wetlands
  • Real-time water quality monitoring networks
  • Remediation and mining
  • Stormwater management