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The Aqua TROLL 200 is the first in the new range of water quality monitoring instruments from In-Situ Inc. The Aqua TROLL 200 measures conductivity, level/pressure and temperature in the harshest conditions.
The Aqua TROLL 200 is designed to combat fouling and conserve power and is built to extend deployment. Can be powered externally with 8-36 VDC or by internal batteries which are guaranteed to last for 5 years when reading every 15 minutes. The TROLL has a titanium construction, is ultra-rugged, corrossion resistant and 0.72"(18.3mm) diameter make the Aqua TROLL 200 the ideal instrument for demanding marine, surface and groundwater applications.
Building on the sucessful Level TROLL platform, the Aqua TROLL 200 is SCADA and telemetry ready. Standard outputs include Modbus/RS485, SDI-12 and 4-20 mA.
With a high accuracy pressure sensor, the Aqua TROLL 200 also allows superior water level accuracyin estuary and coastal environments where salinity values vary due to mixing, rainfall or tides by dynamically compensating level readings for changes in water density due to changes in salinity.
Choice of either gauged or absolute models with ranges up to 500psi. All models feature a 4MB memory which can store up to 380,000 data points. Standard logging modes include linear, linear average and event testing with logging rates as fast as 1/sec. Easy to install using an In-Situ Rugged cable. Data aquisition is made easy using Win-Situ software. Rugged Reader is also available for quick instrument set-up and downloading in the field.
Applications
The Aqua TROLL 200 applications include:
- Wetlands Applications
- Tide Gauge Monitoring
- Pumping tests
- Saltwater Intrusion Projects
- Ground Water Monitoring
- Discharge Monitoring
- Surface Water Monitoring
- Research, studies
- Aquifer Storage and Recovery
- Landslide Prediction
Specifications
| Power |
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| Internal Battery |
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| External Power |
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| Typical Battery Life |
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| Logging |
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| Memory |
4MB, 380,000 data points** |
| Log Types |
Linear, Linear Average*** and Event*** |
| Fastest Reading*Rate |
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| Linear |
1 per minute |
| Linear Average*** |
1 per second |
| Event*** |
1 per second |
| Fastest Logging Rate |
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| Linear |
1 per minute |
| Linear Average*** |
1 per minute |
| Event*** |
1 per second |
| Maximum Number of Logs |
50 |
| *1 reading = time and date plus all available parameters polled or logged from device. |
| **1 data point - time and date plus one parameter logged. |
| ***External power supply or battery pack required when using event testing, recommended when using linear average testing. |
| Temperature |
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| Material |
Titanium |
| Range |
-20ºC to 65ºC(-0ºF to 149ºF) |
| Unit of measure |
Celcius or Fahrenheit |
| Accuracy |
+/-0.1ºC |
| Resolution |
0.01ºC |
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| Conductivity |
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| Sensor Type |
Balanced 4-electrode cell |
| Sensor Material |
PVC, Titanium |
| Range |
5µS/cm-100,000µS/cm |
| Accuracy |
+/-0.5% of reading plus 1µS/cm from 5µS/cm to 80,000µS/cm |
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+/-1.0% of reading from 80,000 µS/cm to 100,000µS/cm |
| Resolution |
0.1µS/cm |
| Parameters Supported * |
Units |
Range |
| Actual Conductvity |
µS, mS |
5µS/cm - 100,000µS/cm |
| Specific Conductivity** |
µS, mS |
5µS/cm - 100,000µS/cm |
| Salinity*** |
PSU |
0-42 PSU |
| TDS |
ppm,ppt |
0-82ppt |
| Resistivity |
Ohms-cm |
10 Ohms-cm - 200,000 Ohms-cm |
| Density(Water) |
gm/cm³ |
0.98-1.14 gm/cm ³ |
| *Parameters derived at 25 ºC and Actual Conductivity range of 5µS/cm - 100,000 µS/cm with a +/-0.05% plus 1µS/cm accuracy; |
| **Dervived from Standard methods 2510B |
| ***Defined by the Practical Salinity Scale 1978 Standard Methods 2520B. |
| ****Real time Level compensation for Density of water. |
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| Pressure/Level* |
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| Sensor Type |
Silicon Strain Gauge |
| Material |
Titanium |
| Range, Non Vented |
30,100,300,500 psia |
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35.8, 197.3, 658.7, 658.7, 1120 ft |
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10.9, 60.1, 200.7, 341.3m |
| Range, Vented |
5, 15, 30, 100, 300, 500 psig |
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11.5, 35, 69, 231, 692, 1153 ft |
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33.5, 11, 21, 70, 210, 351m |
| Unit of Measure |
PSI, KPa, mm, cm, m, in, ft, Bar, mBar, mmHg |
| Accuracy** |
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| @15ºC |
+/-0.05% Full Scale (FS) |
| 0ºC to 50ºC |
+/-0.1% |
| -20ºC to -1ºC and 51ºC to 80ºC |
+/-0.25% FS |
| Resolution |
+/-0.005% FS or better |
| Max. Pressure |
2X Range |
| Burst Pressure |
3X Range |
| * Real time Level compensation for density |
| **Accuracy with 4-20 mA output option: +/- 0.25% FS |
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