Small temperature depth archival tag

DST nano-TD world's smallest archival tag

Small temperature depth archival tag

Overview

Key features

• Suitable for tagging smolts and very small fish
• Size only 17.5 mm x 6 mm
• Weighs only 1.3 g (0.8 g in water)
• Low energy consumption in a tiny logger

Description

DST nano-TD is the world's smallest temperature and depth archival tag.  Recorded data is stored in the logger‘s internal memory with a real time clock reference for each measurement.

The DST nano-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 the software, 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 periods.

After recovering the DST, recorded data is uploaded in the supporting software 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.

Examples of Application

DST nano-TD was designed  to be used as an implantable fish archival tag for collecting temperature and depth measurements. DST nano-TD is made of biocompatible materials (alumina) and its size and shape is ideal for implantation in small fish, for example salmon smolts, mackerel, herring and capelin for documenting their lyfecycle for at least a year. When tagging salmon smolts in rivers it is common to remove the adipose fin of the tagged fish for external identification. Fishermen are notified about the tagging program to increase the recapture rate. When school of fish is caught in nets at sea, the battery inside can be used as a metal detector to help find the tags. The ultra small data logger can also be fitted in tight spaces or in situation where size and weight of logger is critical. With its waterproof housing and carefully chosen materials the DST nano-TD can be used for collecting temperature and pressure data in underwater environments or in other liquids (tolerates chemicals well).

The DST nano-TD temperature depth archival tag is suitable for:

• Tagging of smolts and small fish that little behavioral information exist on
• Implantation or external tagging of fish and marine animals
• Temperature and pressure monitoring in samples or for quality control
• Any use where ultra small and lightweight temperature and depth recorder is required

Read about a DST nano tagging project in our Feb. 2011 newsletter.