Conductivity, Salinity and Temperature Data Logger
The standalone conductivity data logger DST CT measures and records conductivity and temperature. Upon data conversion the software calculates and displays the salinity values and velocity with a time stamp. Size is only 46 mm length and 15 mm diameter.
For use on subsea moorings, underwater equipment and water quality monitoring. Adding Star-Oddi’s protective housing offers flexible mounting of the conductivity meter.
Key features
Smallest conductivity logger on the market
Flexible mounting with protective housing
Different ranges, high or low conductivity
High pressure tolerance
On/off saltwater switch for saving memory
Flexible mounting with protective housing
A plastic protective housing is available, recommended when fastening the data logger to subsea gear and moorings.
Application
The DST CT self contained conductivity measuring device is used for a variety of studies including:
Oceanography and hydrography for long term stationary monitoring in coastal waters
Water quality monitoring with the low conductivity meter
High pressure tolerence
The conductivity recorder can be used in underwater environments from shallow water to deep sea.
Specifications
| Sensors | Conductivity (salinity) and temperature |
| Size (Diameter x Length) | 15mm x 50mm |
| Housing Material | Alumina (Ceramic) |
| Weight (in Air/in Water) | 21g/13g |
| Data Resolution | 12 bits |
| Conductivity Ranges | Choose between: 13-63 mS/cm, 13-50 mS/cm, 3-37 mS/cm or 0.3 to 5 mS/cm |
| Conductivity Resolution | Range 13-63 mS/cm: 0.02 mS/cm, Range 13-50 mS/cm: 0.01 mS/cm, Range 3-37 mS/cm: 0.01 mS/cm, Range 0.3-5 mS/cm: 0.002 mS/cm |
| Conductivity Accuracy | Range 13-63 mS/cm: +/-2 mS/cm, Range 13-50 mS/cm: +/-1.5 mS/cm, Range 3-37 mS/cm: +/-1.5 mS/cm, Range 0.3-5 mS/cm: +/-0.3 mS/cm |
| Salinity Range | Depends on conductivity and temp. range (consult with Star-Oddi) |
| Salinity Resolution | *Range 13-63 mS/cm: 0.01 PSU, Range 13-50 mS/cm: 0.01 PSU, Range 3-37 mS/cm: 0.01 PSU, Range 0.3-5 mS/cm: 0.0005 PSU |
| Salinity Accuracy | *Range 13-63 mS/cm: +/-1.5 PSU, Range 13-50 mS/cm: +/-1 PSU, Range 3-37 mS/cm: +/-1 PSU, Range 0.3-5 mS/cm: +/-0.1 PSU |
| Temperature Range | -1°C to +40°C (30°F to 104°F) |
| Temperature Resolution | 0.032°C (0.058°F) |
| Temperature Accuracy | +/-0.1°C (0.18°F) |
| Temperature Response Time | Time constant (63%) reached in 20 sec. |
| Pressure Tolerance | 2500m (please provide the depth you are going to use the logger at so the applicable membrane is applied) |
| Memory Type | Non-volatile EEPROM |
| Memory Capacity | 130,826 measurements per sensor |
| Memory Mangement | Custom programming |
| Sampling Interval | User specified in second(s) minute(s), or hour(s) |
| Minimum Measuring Interval | 1 second |
| Multiple Intervals Option | Up to 7 different intervals |
| Data Retention | 25 years |
| Clock | Real time clock. Accuracy +/-1 min/month. |
| Communications | Communication Box, wirelss transmission when DST sits in the box. Connection to PC: USB cable. |
| Attachment Hole | 0.9 mm (diameter) |
| Battery Life | 4 years** |
| Replaceable Battery | No |
* Based on conductivity full scale accuracy at 24°C.
** For sampling interval of 10 minutes.
Warranty: 12 months.
Specifications may change without notice.
