Salinity, Temperature and Depth Data Loggers, Archival Tag, Fish Tags

DST Compass Logger
Small submersible compass logger with temperature and depth measurements

Overview:
Sensors: Compass, Temperature and Depth
Memory size: 128,000 measurements in total
Battery life: 3 years
Depth: Down to 3000m

Application examples:

For analysing fish movements/direction over longer periods.
Finding pattern in fish behavior, diurnal/seasonal, for improving knowledge on the ocean resources.
Analysing directions of fishing equipments and other underwater equipment

Features

Related Products:
Data Storage Tags,Fish Archival Tags:
-DST micro
-DST milli
-DST centi
-DST CTD
-DST GPS Fish Tag
-DST pitch and roll

Underwater Temperature Recorders:
-Starmon mini
-DST milli-T
-DST centi-T
-Starmon 3D sensor

The DST compass measures additionally to temperature and depth, relative compass heading of the DST, with reference to the magnetic north.
The measuring parameters are measuring the magnetic field in two directions in the horizontal plane to give the compass heading in degrees (°).
Compass resolution is 2°.
The compass measurements have +/-15° accuracy, and are shown in degrees or as 4, 8 or 16 point compass directions.
The performance of the DST compass is optimum when positioned in a horizontal plane (+/-15° accuracy).
Marks on housing indicate the horizontal plane.
The DST compass allows the scientist to take frequent sampling of the direction, and use different sampling intervals.

The picture below shows an eight point measuring range of the sensor relative to the DST housing. In this position, the heading (nose of housing) shows west (270°).

The sensor can be used for analysing movements of marine animals as well as various underwater gear. For analysing fish movements, it is advised to fasten the tag at both ends for avoiding / limiting movements of the tag. For this application, Star-Oddi offers specially designed fastener kit where the DST compass is fastened to a plastic plate. The performance of the DST compass is optimum when it is placed in the horizontal plane, the further the compass pitches and/or rolls from the horizontal plane the larger the error reading becomes.

Easy to use

DST series is supported by the SeaStar software for Windows, and a communication box which connects to a PC computer. All communications and data transfer is wireless via the communication box. DST is inserted into the box for establishing communication, using the SeaStar software. Before use of the DST, the user sets the sampling interval and start time of recordings. After recapture of DST, the data is retrieved to a PC computer, using the communication box and SeaStar software. The logger can be re-programmed and reused as long as battery lasts.

Read an article about the usage of DST compass on salmon migrating in sea.

How to Order

Star-Oddi sells its products on the global market and our customers come from more than forty countries world wide. We ship with express services such as FedEx, DHL, UPS and the postal service as preferred by the customer.

When you have found the product that you are interested in please Contact Us and ask for a quote, or send an inquiry about the product.

As a start kit, you need one or more DST loggers, one communication box and the supporting software SeaStar. We also offer protective housing for the loggers if the loggers are going to be used in fixed locations or in harsh environment. The communication box comes with a serial cable, but an optional USB converting plug is available.

Star-Oddi employs very competent employees with many years of experience in electronic engineering and sales of scientific equipment for various research applications. The more information you can give us we are more likely to help you find the right product.

Technical Specifications - DST compass

Sensors	Compass, temperature and depth (pressure)*
Size (diameter x length)	15 mm x 46 mm
Weight (in air/in water)	19g / 12g
Memory	3*43K
Memory capacity	129,000 measurements in total
Memory Management	-Custom programming -Primary and secondary parameter
Data resulution	12 bits
Memory type	Non-volatile EEPROM
Data retention	25 years
Resolution compass	2°
Accuracy compass	+/-15° accuracy when placed horizontally
Temperature range	-1°C to +40°C (30°F to 104°F)**
Resolution temperature	0.032°C (0.058°F)
Accuracy temperature	+/-0.1°C (0.18°F)
Standard depth ranges	30m, 50m, 100m, 300m, 800m, 2000m, 3000m
Resolution depth	0.03% of full scale (FS)
Accuracy depth	+/-0.4% of selected range
Response time temp.	Time constant (63%) reached in 20 sec.
Response time depth	Immediate response
Clock	Real time clock. Accuracy +/-1 min/month
Sampling interval	User defined, in sec./min./hour(s)
First recording	User defined start date and time
Computer interface	RS-232C 9 pin serial or USB
Battery life	3 years****
Attachment hole	0.9 mm (in diameter)

* Temperature and/or depth measurements can be skipped, increasing the memory size.
**Outside ranges available upon request.
***Customer specified.
**** For sampling interval of 15 minutes or greater.

Specifications may change without notice.