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Capacity
Coastal
can accommodate all your needs for data storage. Data
storage requirements are a function of the parameters to be measured,
the sampling frequency, the stored resolution, and the instrument's
service interval.
At normal sampling rates, Coastal's instruments can be deployed
for months or up to year or longer. The
MacroSeries instruments are Coastal’s first to use compact flash
technology, enabling the user to choose a much wider range of data
capacity. Typically, the standard memory is .25
MB. Optional flash cards offered are:
10
MB
20 MB
30
MB
40
MB
48
MB
64
MB
If
you need a memory size that is not listed, please contact Coastal
Leasing and let us know what you are looking for. We are happy to
accommodate any reasonable request. Please note that changing the data
capacity of the instrument may cause a change in price.
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Communications
Coastal's
instruments communicate serially (RS-232).
The computer typically attaches by a short cable (less than 50
feet) to enable the user to control the instrument through Wizard
software. In the normal
bi-directional mode, the instrument listens for and responds to
commands. With
unidirectional communication, the instrument echoes status or data to
the user. Transmission options
replace or augment the serial cable link to extend the range and
circumstances for communications. Some alternatives include:
Acoustic
Subsea acoustic telemetry; possibly bidirectional.
RS-422 or RS-485
Serial cable with 1000 m range; fully bidirectional.
Modem
Conventional or cellular phone links; fully bidirectional.
Radio
UHF, VHF or 900 mHz radio or packet radio; possibly
bidirectional.
Argos Satellite
Very limited data transmission, optional instrument locating.
GOES Satellite
Limited data transmission with conditional alert messaging.
ORBCOMM Satellite
Universal coverage with limited data transmission.
New
communications technologies are being developed and are easily
integrated. In addition,
Coastal's auxiliary Wizard+ software and hardware allow real time voice
reporting, display, and alerting of sensed field measurements.
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Sampling
Hardware
and software considerations dictate the possible sampling schemes.
Frequency of sampling is fully programmable by the user.
Measurement, processing, and accuracy of stored results are
functions of instrument type. Coastal's
standard sampling schemes include:
Average
Stores
averaged or vector averaged processed results
Burst
Stores
sampled, individual sensor measurements
Monitor
Displays
present averaged or vector averaged results
The
average mode filters out short term variations, for example, eliminating
waves when measuring tides. The
burst mode captures short term variations.
This is useful for measuring waves, directional waves, or other
highly dynamic events. Not
all instruments include the bursting capability.
Monitor mode provides only real time output for testing and
normally does not need to be changed from the default values.
Conditional sampling and specialized processing are also
available.
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Power
Supply
Depending
upon how long you are deploying an instrument, the power source can
become an important concern. Coastal realizes this and offers a number
of power options to fit your deployment needs.
Standard
‘D’ Cell battery pack
Extended
‘D’ Cell battery pack
External
12 Volt DC Power
Solar
Panels
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Housing
Coastal's
instruments can be housed in a variety of ways, but are generally fully
self-contained and submersible. A
bulkhead communications and power connector located on the outside of
the housing eliminates the need to open the instrument for data
retrieval. In
determining the housing of the instrument, the size and number of
sensors, as well as power structure, must be taken into consideration. There are three main
components to an instrument’s housing: 1) Type of Material, 2) Size
and 3) Deployment Depth
Materials
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Size
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Deployment Depth
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Aluminum
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ExtraSmall,
10.625"
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Atmosphere
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Plastic
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Small,
12.5"
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Shallow
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Stainless
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Small/Medium,
19.8"
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Deep
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Titanium
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Medium,
21.8"
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Large,
29.125"
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Extra
Large, 38.5"
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