WATER MONITORING SYSTEMS
CTD-Diver
NEW
The new CTD-Diver comes with an upgraded memory size of 144,000 records, backup memory and is also available in a 200-meter pressure range.
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.
The CTD-Diver 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.
Specifications
In addition, to a pressure sensor the CTD-Diver is also equipped with a 4-electrode conductivity sensor for measuring the true or specific electrical conductivity of the water from 0 to 120 mS/cm.
The CTD-Diver can store 144,000 measurements with backup (date/time, pressure, temperature and conductivity).
The CTD-Diver has the following sample methods: fixed length intervals, event dependent, averaging and pumping test.
The CTD-Diver is available in the following pressure ranges: 10 m, 50 m, 100 m and 200 m.
Key Specifications
General
| Length
Diameter Memory Housing Weight Battery life Sample interval Sample methods |
135 mm
22 mm 144,000 measurements ceramic (ZrO2) 95 grams 10 years (dependent on usage) 1 second to 99 hours 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 |
Temperature
|
Value |
Unit |
|
| Range |
-20 .. +80 |
°C |
| Accuracy |
±0.1 |
°C |
| Resolution |
0.01 |
°C |
Conductivity
|
Value |
Unit |
|
| Range |
30 or 120 (user adjustable) |
mS/cm |
| Accuracy |
±1% of reading |
mS/cm |
| Resolution |
0.1% of reading |
mS/cm |