CTD-Diver
The CTD-Diver is ideal for ground and surface water applications.
The CTD-Diver is ideal for ground and surface water applications.
Where there is a need to monitor groundwater levels and saltwater intrusion, injected wastewater, or contamination from chemical discharges and landfill sites, the CTD-Diver® with its 22 mm diameter rugged, corrosion-proof ceramic (zirconium-oxide) housing, is the instrument of choice. It autonomously measures conductivity, pressure, and temperature and records them in its internal memory. The CTD-Diver is ideal for ground and surface water level applications.
The CTD-Diver is a submersible datalogger for long-term uninterrupted, real-time water level monitoring using a pressure sensor when submerged at a fixed level under the water surface. The pressure sensor measures the equivalent hydrostatic pressure of the water above the sensor diaphragm to calculate the total water depth. The 4-electrode conductivity sensor measures the true or specific electrical conductivity of the water from 0 to 120 mS/cm.
The CTD-Diver can store a maximum of 144,000 measurements (date/time, pressure, temperature, and conductivity) in its working memory and 144,000 measurements in its backup memory.
The CTD-Diver has the following sample methods: fixed length intervals, event-dependent, averaging, and pumping tests. The measurements are stored in fixed length or continuous memory (fixed length only).
The CTD-Diver is available in the following pressure ranges 10 m, 50 m, 100 m, and 200 m.
Contact us for more information or to obtain a quote.
Length | 135 mm |
Diameter | 22 mm |
Memory | 144,000 measurements |
Housing | ceramic (ZrO2) |
Weight | 95 grams |
Battery life | 10 years (dependent on usage) |
Sample interval | 1 second to 99 hours |
Sample methods | fixed, event-dependent, averaging, and pumping test |
Pressure
Part No | DI281 | DI282 | DI283 | DI284 | Unit |
Range | 10 | 50 | 100 | 200 | meter |
Accuracy | ±0.5 | ±2.5 | ±5.0 | ±10.0 | cmH2O |
Resolution | 0.2 | 1.0 | 2.0 | 4.0 | cmH2O |
Value | Unit | |
Range | -20 .. +80 | °C |
Accuracy | ±0.1 | °C |
Resolution | 0.01 | °C |
Value | Unit | |
Range | 30 or 120 (user adjustable) | mS/cm |
Accuracy | ±1% of reading | mS/cm |
Resolution | 0.1% of reading | mS/cm |
* typical, see product manual for full technical specification
Part No | Range |
DI281 | 10 meter |
DI282 | 50 meter |
DI283 | 100 meter |
DI284 | 200 meter |