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.
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.
| 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 |
| 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 |
GDS has a variety of instruments for hire, these Instruments, Readouts and Dataloggers are available for product hire on a short-term (fortnightly) or long-term (monthly) basis including, but not limited to, the following:
