Marine Instrumentation:
We offer
standard and custom made Hydrophones, Array
Hydrophones, Autonomus Hydrophone data recording
systems, Projectors, many other accessories and
instruments for Ocean research and Marine
industry.
Hydrophones are two types. Analog and
Digital. Basically it is a transducer that
outputs electrical energy from the sound energy.
Now the Digital Hydrophones extends the analog
hydrophones by connecting to a pre-amplifier,
filter, A/D converter and to a Data storage for
processing using Personal computers. These offer
selectable bandwidths from 10 Hz to 1600 Hz .
Low frequency cut off is available for deep
water applications.
The very low noise Hydrophones are used for
earthquake and tsunami monitoring, landslides and
sub sea volcano detection, vessel monitoring as
well. We can propose autonomous hydrophones
UAR
which
can be deployed upto 2000 meters in
the ocean.
These hydrophones are ably supported by
efficient software to view the data in frequency
and time domains and listen through the PC
speakers. Some of the accessories available
include Float Collars, Ethernet extenders and
Hydrophone Hubs.
Autonomous or Smart Hydrophones now provide
continuous recording of the data for several
days the on the solid state disks and connected
to Personal computer for processing. It includes
a processor and memory to the digital
hydrophones enabling the data to be processed,
interpreted and transmitted or recorded in the
instrument. Triggers can be setup to detect
acoustic events and selectively record data,
test messages and time stamps. They also perform
own calibration so that the data is accurately
determined. Suitable cables and batteries are
available for 30 and 90 days recordings.
Nano
Remote Underwater Digital Acoustic Recorder is a
hand-held, ultra compact, short-term, autonomous
underwater recording device that is designed for
a wide range of applications. Uses vary from
manual underwater recording while diving to
autonomously recording wild cetacean
vocalizations during the night. It includes an
external record start/stop switch that allows
the user to record only when desired. This makes
it an excellent tool for recoding high
resolution audio for underwater video
production.
It uses the same hydrophone element and
preamplifier with a 24-bit, 96kHz digital
recorder.
The standard version of this user-friendly
recording system can be deployed to depths of up
to 100m and will provide nearly 4 hours of
continuous 24-bit, 96kHz sample-rate recording,
and up to 10 hours at 16-bit/44kHz sample-rate.
The long-life version will acquire 24-bit, 96kHz
sample-rate data for more than 15 hours, and
16-bit/44kHz sample-rate data for nearly 26
hours. See the other photos in this series
to see
just how small and portable these powerful
autonomous underwater recording devices are!
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