Measure the Whole Range!

Aqua TROLL® 500 MP


Whether you’re spot checking a tank or conducting long-term monitoring at remote sites, the Aqua TROLL 500 has you covered. This cost-effective multiprobe enables wireless data collection when used as a handheld, plus easy integration with control systems and telemetry for long-term installation. With interchangeable sensors, the Aqua TROLL 500 replaces multiple instruments and saves time in the field to reduce overall monitoring costs. Highly stable sensors need minimal maintenance and calibration, giving you confidence in your data. Just plug the sonde into a Wireless TROLL Com, datalogger, control system or telemetry and you’re ready to go!
The Aqua TROLL 500 fits a wide variety of applications, including:

•    Surface water spot sampling and profiling
•    Remote monitoring via telemetry VuLink
•    Long-term drinking water, wastewater or stormwater monitoring
•    Aquaculture
•    Low-flow groundwater sampling and remediation


  • Base sensor configuration includes EPA-approved optical RDO, pH/ORP, turbidity, conductivity, temperature, and pressure, Salinity, resistivity, Total Dissolved Solids (TDS) and Density
  • Long-term pH stability: the Aqua TROLL 500 pH change is 0.0008 pH/day, or a change of 0.1 pH in 125 days
  • Ammonium, Chloride and Nitrate Ion-Selective Electrode (ISE) available
  • Rhodamine WT, Chlorophyll a, and Blue Green Algae – Phycocyanin (BGA-PC) and Phycoerythrin (BGA-PE) – sensors available
  • Interchangeable sensors, wet-mateable
  • Sub 2” antifouling wiper cleans all sensors for higher quality data in long-term deployments
  • Wireless Mobile Bluetooth® connection for Android (VuSitu app) and Win-Situ 5 for PC laptop
  • Site tagging and GPS coordinates functions available via mobile app
  • LCD display gives a snapshot of instruments health and wireless connectivity
  • Wide sensor range for performance in a variety of applications
  • Automatic environmental compensation eliminates data post-processing
  • Easy integration with PLC/SCADA control systems, data loggers, and telemetry—no adapters or confusing proprietary communication protocols
  • Redesigned pH and ISE reference for 3X sensor stability
  • Corrosion-resistant housing and abrasion-resistant RDO sensor
  • Compatible with Low-Flow system (sold separately)



  • Compact, lightweight and cost-effective as it requires no internal battery or internal datalogger
  • Minimal maintenance and calibration


Technical Specifications

Operating temperature:-5 to 50 °C (23 to 122 °F)
Dimensions:Ø 4.7 cm  / Length 46 cm (includes connector)
Weight:0.98 kg (includes all sensors)
Wetted materials:PC, PC alloy, Delrin™, Santoprene™, Inconel™, Viton™, Titanium, Platinum, Ceramic, Nylon
Cable options: Vented or non-vented polyurethane or vented Tefzel®
Output options:RS-485/MODBUS, SDI-12, Bluetooth®
External power supply:

8-36 VDC  

Sleep: 0.10 mA typical               

Measurement: 15 mA typical, 45mA Max



Ordering Details:

Order No. Device 
5050205 -  5050216Aqua TROLL® 500 MPventilated / non-ventilated
Pressure range: 9 m, 30 m, 76 m, 200 m
5050238Wirless Troll Comreadout device with Bluetooth and USB (incl. baro and temperature sensor, battery supply)
5050152VuLink  Telemetry Device
5050225Automatic wiperfor active antifouling
5050264Flow cellsmallest flow cell on the market, step-by-step sampling with Vu-Situ app
5050149App /Win-Situ Softwareall-in-one software package for automatic configuration, simplified calibration, targeted data analysis and automatic reporting (free)
5050075Rugged Android tabletfor field use
on requestAdditional accessoriesWell caps and inserts, cable options/wire suspension



Principal Office Müncheberg

Umwelt-Geräte-Technik GmbH
Eberswalder Str. 58
15374 Müncheberg
Tel.: +49 (0) 33432 7559-0

Branch South

Umwelt-Geräte-Technik GmbH
Munich Airport Business Park
Lindberghstr. 7a
85399 Hallbergmoos
Tel.: +49 (0) 811 124478-0