Underwater data logger with a temperature sensor & depth sensor

DST centi - TD

Data Storage Tag centi - Temperature and Depth

Overview

Dimensions (diameter x length): 15mm x 46mm
Sensors: Temperature and pressure (depth)
Standard temperature range: -2°C to +40°C
Temperature accuracy: +/-0.1°C
Depth ranges: 0.1m to 30m, 0.1m to 50m, 0.1m to 100m, 1m to 270m, 5m to 800m, 5m to 1500m, 10m to 2000m, 10m to 3000m
Depth accuracy: +/- 0.4% of selected range for 30m to 270m range, +/- 0.6% of selected range for 800m to 3000m range
Memory size: 174,000 measurements in total (option for extension to 524,000 measurements)
Battery life: 7 years
Housing material: Alumina (implantable, biocompatible ceramic material)

Description

The DST centi-TD is a miniature underwater data logger with temperature and pressure (depth) sensors.  Recorded data is stored in the logger‘s internal memory with a real-time clock reference for each measurement.

The DST centi-TD is supported by the SeaStar software and the Communication Box which serves as an interface between the logger and a PC. Communication between the logger and the Communication Box is wireless.

In SeaStar the user sets the start time, start date and sampling interval before starting the recorder. Up to seven different intervals can be set for the same measurement sequence. This is especially useful when more frequent measurements are needed at a certain time period.
With default programming temperature and depth are recorded as pairs. Optionally, the two parameters can be set separately as primary and secondary parameters with different sampling frequency. That way memory partitioning can be customized according to individual preferences.
After recovering the DST recorded data is uploaded to SeaStar where results are displayed both in graphic and tabular form. After retrieving the data, the DST can be re-programmed and reused as long as the battery lasts.
A set of Communication Box and SeaStar software needs to be purchased with the first order.

Star-Oddi also offers protective logger housings for the DSTs that give more flexible mounting options and protect the logger. The housing is ideal for use at fixed locations, underwater gear or in harsh environments.

For more information about accessories please click here.

Features on Request

Extended memory
DST centi-TD and DST centi-T can be delivered with an extended memory capacity of 523,800 measurements in total (DST centi-ex).
Logic feature
The Logic feature allows users to choose a depth limit where the logger starts and stops recording. The logger is in sleep mode while above the predetermined depth, saving memory and battery life. If the Logic feature is used in a logger all parameter measurements are taken at the same time – primary and secondary parameter settings are not possible. The logic feature can be applied on DST centi with extended memory (DST centi-ex), DST CTD and DST pitch & roll.

Temperature calibration outside standard range
Temperature calibration outside standard ranges or for smaller ranges is available for all products on request.

Examples of Application

DST centi-TD can be used as a stand-alone logger for recording depth and temperature in ocean and freshwater environments.   The DST can be fastened to fishing gear, deployment lines, cables, moorings or other underwater equipment, collecting valuable data. The DST-TD is ideal for tagging fish and marine animals, externally or internally with implantation providing information on fish behavior and migration.

Examples of studies suitable for DST centi-TD:

• Marine animal tagging
• Fisheries research
• Oceanography
• Marine biology
• Ichthyology
• Hydrology
• Ecosystems research