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Aqua TROLL 400 Multiparameter Probe

Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Aqua TROLL 400 Multiparameter Probe
Ex Tax:0.00€
  • Model: Aqua TROLL 400 Multiparameter Probe
  • Weight: 694.00g
  • Dimensions: 26.90cm x4.70cm x4.70cm
  • MPN: AT400

The Aqua TROLL 400 is an all-in-one multiparameter process probe that measures 12 water parameters. The probe contains six water quality sensors housed in a sub-2 inch unit, measuring actual and specific conductivity, salinity, total dissolved solids, resistivity, density, dissolved oxygen, ORP, pH, temperature, water level and water pressure.

Use the Aqua TROLL 400 to monitor remediation programs, mine water, production water, coastal environments, stormwater systems, real-time and long-term monitoring, or other applications. Integrate with telemetry systems and HydroVu Data Services for real-time feedback on all of your water monitoring sites.


  • 12 parameters from six sensors
  • DO readings automatically compensate for salinity
  • Modbus/RS485 or SDI-12 protocols
  • Compact instrument
  • Durable materials
  • Versatile power options (no internal battery)
  • Real-time readings (data storage unavailable)


  • Ideal for long-term monitoring – Rugged probe can be deployed for months of unattended operation.
  • Control project costs – Durable networking probe withstands harsh field conditions.
  • Reliable data – Patented, EPA-approved optical RDO sensor, plus multiparameter sensors that prevent drift that comes with age.
  • Fits your deployment – Compact design for narrow deployment locations.
  • 24/7 data access – Open communication protocols easily integrate into your existing telemetry system and HydroVu Data Services.


  • Multiparameter probe
  • Replaceable combination pH/ORP sensor
  • RDO cap
  • Win-Situ Software
  • Manual
Cable Customizable, non-vented (absolute) RuggedCable® System is available in either Tefzel® or polyurethane.
Current Measurement current: 16 mA @ 24 VDC. Sleep current: 40 µA @ 24 VDC
Dimensions 4.7 cm (1.85 in.) OD x 26.9 cm (10.6 in.) with restrictor installed (does not include connector)
Interface In-Situ Con TROLL PRO System; In-Situ Tube and Cube Telemetry System; SCADA/PLC; HydroVu Data Services, and third-party data loggers, samplers, controllers, and telemetry systems.
Operating temperature -5 to 50° C (23 to 122° F)
Output options Modbus/RS485 and SDI-12
Power requirement 8-36 VDC (no internal battery)
AccuracyRangeResolutionSensor TypeResponse TimeUnits of MeasureMethodology
Level, Depth, PressureTypical ±0.1% FS @ 15° C;±0.3% FS max. from 0 to50° C
76 m (250 ft); absolute(non-vented)
±0.01% FS or better
Instantaneous inthermal equilibrium
Pressure: psi, kPa, bar, mbar, mmHg
Level: mm, cm, m, in., ft
ConductivityTypical ±0.5% + 1 µS/cm;±1% max.
5 to 100,000 µS/cm
0.1 µS/cm
Instantaneous inthermal equilibrium

Actual conductivity (µS/cm, mS/cm)
Specific conductivity (µS/cm, mS/cm)
Salinity (PSU)
Total dissolved solids (ppt, ppm)
Resistivity (Ohms-cm)
Density (g/cm3)

Std. Methods
EPA 120.1
Dissolved oxygen OpticalRDO® Classic Cap
±0.1 mg/L
±0.2 mg/L
±10% of reading
0 to 8 mg/L
8 to 20 mg/L
20 to 50 mg/L
Full operating range: 0 to50 mg/L
0.01 mg/L
Fixed withreplaceable RDOClassic Sensor Cap
T90: <45 sec.
T95: <60 sec.
mg/L, % saturation, ppm, ppO
EPA-approvedIn-Situ Methods
ORP±5.0 mV
±1400 mV
0.1 mV
Replaceable pH/ORP combo sensor
<15 sec.
Std. Methods
pH±0.1 pH unit
0 to 14 pH units
0.01 pH unit
Replaceable pH/ORP combo sensor
<15 sec., pH 7 to pH 4
pH units, mV
Std. Methods
4500-H+EPA 150.2
Temperature*±0.1° C
-5 to 50° C(23 to 122° F)
0.01° C or better
<30 sec
Celsius, Fahrenheit
EPA 170.1

*Temperature response only. System response time depends on site conditions.

Storage temperature -40 to 65° C (-40 to 140° F)
Wetted materials PVC, 316 stainless steel, titanium, Acetal, Viton®, PC/PMMA
Logging Rate 1 reading every 5 seconds (no internal logging)
Weight 694 g (1.53 lbs)
Environmental Rating IP68 with all sensors and cable attached. IP67 with sensors removed and cable detached.