Products

DST comp-tilt

Data Storage Tag compass-tilt

Overview

Dimensions (diameter x length): 15mm x 46mm
Sensors: Compass (2-D), tilt (3-D), temperature, pressure (depth)
Standard temperature range: -1°C to +40°C
Temperature accuracy: +/-0.1°C
Depth ranges: 30m, 50m, 100m, 270m, 800m, 1500m, 2000m or 3000m
Depth accuracy: +/-0.4% of selected range
Compass resolution: 1°
Compass accuracy: +/-15°
Tilt resolution:0.2°
Tilt accuracy: +/-3°
Memory size:  80,000 measurements
Battery life: 2 years
Housing material: Alumina (implantable, biocompatible ceramic material)

Description

The DST comp-tilt is a small data logger that measures and records temperature, depth, tilt in three directions and magnetic field strength in two directions. From the magnetic field strength a relative compass heading with reference to the magnetic north is calculated in the supporting SeaStar software. Data for compass heading and tilt are shown in degrees (°). Compass readings are tilt compensated, but only in a limited way as the third magnetic vector needed for the correction is estimated. Measurements are stored in the logger‘s internal memory with a real time reference for each measurement.

DST comp-tilt can be used in animals either implanted or attached externally. For external tagging Star-Oddi can provide a specially designed DST fastener kit. For use on various gear the Adjustable Housing can be purchased. The recorder is fixed inside the housing, which protects the recorder and gives more flexible mounting options.

The DST comp-tilt 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 depth, temperature, relative compass heading and tilt are recorded at the same time. Optionally, temperature-depth and compass-tilt can be set as primary and secondary parameter pairs with different sampling frequency. That way memory partitioning can be customized according to individual preferences.

When the DST is recovered, 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.
For more information about accessories please click here.

Features on Request

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 comp-tilt can be used for analyzing movements and behavior of marine animals as well as for studying various underwater gears. 

The DST comp-tilt is suitable for studies in e.g. :

• Fish and marine animal tagging (internally and externally)
• Navigation and orientation studies of underwater equipment

You can read more about studies using DSTs and other applications of the DSTs here.