GlowTracka Bioluminescence Sensor: measures bioluminescence for toxic blooms & biomass studies

GlowTracka Bioluminescence Sensor: measures bioluminescence for toxic blooms & biomass studies GlowTracka, originally developed by Plymouth Marine Laboratory, UK, is a robust, sensitive detector primarily used for the assessment of bioluminescent algae within the marine environment.  It is ideally suited to biomass studies and toxic algae bloom detection.

 

GlowTracka’s precision flow meter stimulates bioluminescent organisms – principally dinoflagellates. The instrument then measures the light flashes as the organisms pass the detector. The complete range of flashes that can occur – from single events to mesoscale – is measured.  GlowTracka is designed to be moored, profiled (with pumped systems) or deployed in towed vehicles.

 

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Applications

  • Biomass studies in the marine environment
  • Bioluminescence species abundance assessments
  • Toxic algae bloom detection
  • Autonomous & towed vehicle deployments
  • Flow-through systems available

Features

  • Small and rugged sensor
  • Low power consumption
  • High sensitivity
  • Interface for flow sensor

Hows does it work?

GlowTracka’s precision flow meter stimulates bioluminescent organisms – principally dinoflagellates. The instrument then measures the light flashes as the organisms pass the detector. The complete range of flashes that can occur – from single events to mesoscale – is measured.

 

The measurements indicate changes in primary productivity in an area, giving the instrument a useful role in pollution monitoring and biomass studies. Since the abundance of individual bioluminescent species can be studied, it is often an indication of toxic algal blooms.

Configurations

GlowTracka is designed to be moored, profiled (with pumped systems) or deployed in autonomous towed vehicles. The GlowTracka includes a marinised turbine flowmeter which is primarily used to stimulate the bioluminescent matter, but can also be used to monitor flow to obtain abundance data.

Specification

Type Flow-through (28mm internal pipe diameter)
Optical viewing Transerve to flow 
Detector  Photodiode (100 sq mm) 
Irradiance detectivity 10 picowatt at 60mm over z.f. - 50Hz (-3db)
Relative responsivity
 400nm 600nm 700nm 
 x 0.4 x 1.1  x1.3(nom)
Power requirement

External supply version:
6.0V to 25V (40mA at 12V nominal); fully insulated from all outputs via DC-DC converter

Grounding  All circuitry DC isolated from chassis
Signal outputs  All 1 volt full-scale, 0.5 ohm source resistance, > 10 kilohm load, (z.f. -50Hz) 
Flowmeter input 

Zero-crossing required, from+/-5mV to+/-100V;500Hz full-scale, other scalings as factory option

Depth capacity 1000 meters standard
Weights (approx) 2.4kg in air
Connector Impulse LPMIL - 4FS

Flowmeter
Flow speed range 68 to 680 LPM
Internal diameter 38 mm 
Size 60 x 12 x 120mm 
Output Sine wave output proportional to flow rate. 30mV peak/peak at 10% flow range.1000Hz at fall flow

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