Autonomous Plankton Sampler - provides Marine Biologists with a fully automated tool to collect plankton in the oceans, enabling analysis of plankton species distribution and abundance

Autonomous Plankton Sampler - provides Marine Biologists with a fully automated tool to collect plankton in the oceans, enabling analysis of plankton species distribution and abundanceChelsea Technologies Group’s Autonomous Plankton Sampler provides Marine Biologists with a fully automated tool to collect plankton in the oceans, enabling analysis of plankton species distribution and abundance. Plankton sampling provides invaluable insights into numerous aspects of plankton dynamics and ecology including: climate change, biodiversity and biogeography, eutrophication, harmful algal blooms, fisheries investigations, plankton ecology, taxonomy, regime shifts and non-indigenous species. 

 

The Plankton Samplier is ideally suited for use in undulating bodies such as the NuShuttle, to enable discrimination of zooplankton variability with depth. It is designed to operate autonomously, collecting zooplankton samples within a user programmable index advanced filter mesh, for post mission laboratory analysis. It can also be fitted to onboard flow-through systems such as FerryBox type systems.

 

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Applications

  • Fisheries research
  • Plankton studies
  • Ship borne in-line systems
  • Fixed depth and undulating towed vehicles

Features

  • On-board batteries and microcontroller
  • Hydrodynamics closely matched to the Hardy Sampler
  • Integral flow meter
  • Variety of mesh sizes and materials available
  • Pre-programmed or commanded sampling
  • Automatic advance from onset of clogging

How does it work

CTG’s Autonomous Plankton Sampler is loaded with two rolls of gauze on two separate spools. When the mechanism is activated, both gauze lengths are advanced 70mm via an electric motor. The frequency of each advance is programmed by the user via PC on either a time or flow-rate basis. One of the gauze lengths rests against a 100mm x 50mm aperture open to the flow of water, and it is here where the plankton is collected. On advance, the sampled plankton is sandwiched by the other gauze, and both gauze lengths and the sample are collected in the preserving tank.

Configuration

CTG Autonomous Plankton Sampler is available either with internal battery or externally powered. Both silk and nylon gauzes are available. A suitable flow meter is available as well as a flow-through housing.

Specification

Size 140mm x 235mm x 291mm
Weight 12.75kg
Depth rating 200m
Voltage Input (externally powered version) 12 Vdc
Battery (battery powered version) 6 x 1.5V Compound primary cell
Internal memory 32 Kbyte NVRAM
Material Stainless steel
Time between gauze advances 15 seconds to 1 year
Switch on Internally programmable or external trigger
Preservation Formal in tank
Gauze size 80 to 400µm range
Filtration area 50 x 100mm
Inlet port 25 x 100mm
Maximum tow speed 25 knots

 

Flow Meter Option Specification

Flow speed range 14-140 LPM
Internal diameter 19mm
Size 33mm x 83mm x 96mm
Output Sine wave output proportional to flow rate. 30mV peak /peak at 10% flow range. 1000Hz at full flow. (Converted and recorded as pulses within Plankton Sampler logger)

 In view of our continual improvement, the designs and specifications of our products may vary from those described.