温度数据输入器 DST

压力深度倾斜式

Smallest compass archival tag on the market

This miniature compass archival tag measures and records earth’s magnetic field strength and tilt in three directions, giving the compass measurements. Additionally it measures depth (pressure) and temperature. The logger is only 46 mm in length and 15 mm in width.

Application

DST magnetic is designed as a fish archival tag for geolocation studies, longitude latitude estimates and migration route tracking of fish and marine animals. It enables scientists to gain valuable information on migration routes and behavioural patterns over a long period of time. The tag can be implanted or tagged externally. For using the logger on a mooring or subsea gear, click here.

Wide selection of depth ranges, from shallow to deep ocean

Customers choose between depth calibration up to: 50 m, 100 m, 270 m, 800 m, 1500 m or 3000 m. The shallower the range the better the resolution and accuracy.

Tag holder kit ensures easier and safer attachment

A tag holder kit is available for the tags, to make the tagging process easier. It also increases the safety for the fish. See more under the accessories tab.

User defined text on the housing

For tag and release of animals into the wild the tags can have a customized text on the housing, for recapture purposes. This is especially important when the tags are used on commercially fished species, so that fishermen can return a tag with valuable data to the scientist. Normally there is a reward for return.

• Smallest compass magnetic archival tag on the market
• Various depth sensors, from shallow to deep sea
• Tag holding kit for external fish tagging
• User defined text on the housing

Simple in Use, From Setup to Data Retrieval

The compass logger and the accompanying items are designed for ease of use throughout the research process, from setting up the logger, attaching it, to retrieving and analysing the data. The logger is supported by the SeaStar software and a Communication Box which have to be purchased with the first order.

Programming the Logger

To launch the logger for measuring it is placed into the Communication Box interface that connects with a USB cable to a PC computer. In the SeaStar software, the user sets the start time, start date and sampling interval before starting the logger in measurement mode. The logger synchronizes its internal clock with the date & time on the computer being used.

Primary and Secondary Sensors

With default programming the logger is measuring compass, tilt, depth and temperature simultaneously. Optionally Compass-Tilt and Temp-Depth can be uncoupled, set as primary and secondary parameter pairs with different sampling frequency. That way memory partitioning can be customized according to individual preferences.

Single or multiple intervals

There are two modes for sampling, either at a single interval throughout the period or multiple intervals. When choosing multiple interval programming it is possible to define up to seven different intervals and number of measurements for each interval. Shifting between wide and narrow intervals can help in extending the measuring period due to memory limitation and have more frequent measurements during certain time periods.

Memory and Battery Life Calculations

The software automatically calculates when memory fills up based on certain interval settings, making it easier for the user to decide how to program the logger. Estimation on battery consumption during that time period is also calculated.

Uploading the Data

After recovering the logger, it is inserted into the communication box and the recorded data is uploaded to the software. The results are displayed both in graphic and tabular form and the data can be exported to other programs. The time series data shows each measurement with its own time stamp.

Low energy consumption

After data retrieval the logger can be reused, as long as the batteries inside last. Battery life estimation is always reported upon connection with the logger. Due to the low energy consumption circuitry design the battery life is long, but actual lifetime depends on usage and sampling interval used.

Accessories

• Communication box: Serves as an interface between the DST and a PC computer. Used for connecting to the DST, starting the logger and retrieving data. Comes with a USB cable.
• SeaStar software: For Windows, needed to operate the DST. Data is displayed in a graph and table. Time series data file can be opened in other programs. Installation product key provided when ordering.
• Patternfinder analysis software: Graphic data analysis software for efficient data analysis, periodic statistic analysis, signal filtering, overlaying and analyzing multiple signals, event and pattern analysis. Data can be transferred from SeaStar to PatternFinder with one button click.
• Fish and Marine Animal Tag Holder Kits for External Tagging:
  • Plate holder kit: Consists of wire fasteners, a plastic plate for holding the tag, a plastic plate on the opposite side, and silicon pads for external attachment. Smooth edges, silicone pads for comfort. Available for centi and milli sized loggers. Instructions PDF.
  • Capsule holder kit: Plastic capsule with 2 mm holes on each end, ensuring water flow to the sensors. Comes with a wire harness, plastic plate and two silicone pads. Available for all logger sizes: centi, milli and micro.
• Floating Device for DST: For internal and external tagging of fish and marine animals. Can be coated with biocompatible material or painted for visibility.

Technical Specifications

• Sensors: Magnetic field strength (3D), tilt (3D), temperature, depth*
• Size (Diameter x Length): 15mm x 46mm
• Housing Material: Biocompatible alumina (Ceramic)
• Weight (in Air/in Water): 19g/12g
• Data Resolution: 12 bits for temp/depth, 14 bits for magnetic field strength (compass) and tilt
• Compass Resolution: 1°
• Compass Accuracy: +/-15° heading with tilt correction on compass, up to +/-45° from horizontal plane
• Magnetic Field Strength Range: 0 to 2 gauss
• Magnetic Field Strength Resolution: 100nT
• Magnetic Field Strength Accuracy: +/-300nT
• Tilt Range: +/-90° (180° span)
• Tilt Resolution: 0.05°
• Tilt Accuracy: +/-3°
• 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.
• Standard Depth Ranges: 50m, 100m, 270m, 800m, 1500m, 3000m
• Depth Resolution: 0.03% of selected range
• Depth Accuracy: +/-1% of selected range
• Depth Response Time: Immediate
• Memory Type: Non-volatile EEPROM
• Memory Capacity: 104,634 measurements**
• Memory Capacity Bytes: 392,379 bytes / temperature-pressure 3 bytes, compass (MFS)-tilt 12 bytes
• Measurement Interval: User specified in second(s), minute(s), or hour(s)
• Minimum Measurement Interval: 1 second
• Multiple Intervals Option: Up to 7 different intervals
• Measurement Options (Primary/Secondary): Temp/depth as primary, CompTilt as primary
• Data Retention: 25 years
• Clock: Real time clock. Accuracy +/-1 min/month.
• Communications: Communication Box, wireless transmission when DST sits in the box. Connection to PC: USB cable.
• Attachment Hole: 0.9 mm (diameter)
• Battery Life: 3 years***
• Replaceable Battery: No

*Pressure & temperature sensors optional.
**Divided between the number of sensors
*** For sampling interval of 10 minutes; MFS-tilt, and temp-pressure recorded simultaneously.
Warranty: 12 months.
Specifications may change without notice.