of Freshwater Fish
PIT tags as small as 12mm x 2.2mm, we can provide complete solutions
enabling the passage of individually identified fish to be logged
along with time/date information. The movements of fish ranging
in size from minnows to adult salmon can be monitored automatically
24 hours a day. Equipment is available for fish-passes, streams
and fluvaria enabling detailed studies of fish behaviour to be carried
out to assist in fisheries management and conservation of species.
The insert above shows one of ten swim-through antennae at a site
to study the efficiency of a fish pass.
button operation allows a PIT tag to be read and displayed on a
high contrast LCD display. Powered by a PP3 battery this reader
has an optional waterproof cover and is ideal for verifying PIT
tag operation post application and for general use.
software applications are developed in industry standard Microsoft
Visual Basic ensuring compatibility with all current Microsoft Windows
based PC operating systems. The example shown, displays (and logs
to file) time and date stamped PIT tag events collected from up
to 30 PIT readers connected via RS422 serial bus. The status of
the individual readers is also shown. Data can be automatically
e-mailed to users on a daily basis. Simpler utilities are available
for communicating with individual readers
choice of single-channel, 8-channel or 16-channel readers enable
single or multiplexed antenna configurations to suit application
requirements. Readers have RS232/RS422 interface and allow multi-drop
communications. (16-channel multiplexed reader shown)
x 2.2mm PIT tags can be supplied loose or in pre-sterilised needle,
whilst 34mm x 4mm tags are only supplied loose. Individually bagged
tags with self adhesive barcode label (human readable) can be supplied
as an option. Read range can be up to 25cm for 12mm tag and 60cm
for 34mm tag although this is very dependent on reader/antenna combination.
Antennae fall into general categories of panel,
loop or tube and are individually customised to suit an application.
Antennae can be designed to IP68 specification.