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CRAB

CRAB

CRAB

Product catalog summary
Method
Remote optical sensing of water surfaces using a vertical laser beam.
Principle of Operation
The device operates based on the difference in light reflection between water and oil film surfaces.
Applications
  • Monitoring of water surfaces such as seas, harbors, lakes, and rivers.
  • Detection of oil leakages.
  • Monitoring of process and waste waters.
  • Both stationary monitoring and mobile surveys.
Features and Benefits
  • Continuous remote optical sensing without the need for sampling.
  • High sensitivity, capable of detecting oil slicks with a thickness as low as 0.5 microns.
  • No interference from scattered radiation and low interference from ripples and waves (beam/surface angle up to ±20°).
  • Built-in data acquisition and processing.
  • Waterproof housing suitable for outdoor installation.
  • Explosion-proof option available.
  • Can be mounted at stationary points, buoys, or motor boats.
  • Long-term operation without maintenance.
Specifications
  • Detecting Object: Oil slick on water surface.
  • Minimum Detectable Oil Film Thickness: 0.5 μm.
  • Mode of Measurement: Continuous.
  • Minimum Response Time: 0.1 seconds.
  • Signal Status Outputs: "No", "Yes" ("Alarm").
  • Communication Ports: RS-485, Current loop 4–20 mA, Relay, Twisted pair length up to 1500 m.
  • Power Supply: 12–15 V, 0.1 A.
  • Power Consumption: Up to 3 W.
  • Ambient Conditions: Temperature -10 to +50 ºC, Humidity up to 100% (rain).
  • Distance to Water Surface: 0.5–10 m or 5–20 m.
  • Dimensions: 160 × 160 × 90 mm or 300 × 300 × 200 mm.
  • Weight: 1 kg or 2 kg.
Equipment and Options
  • CRAB optical detector.
  • Optional power supply unit for AC 110–240 V power mains.
Warranty
CRAB optical detectors come with a 12-month warranty.
Service
Engineers provide installation design, consultations, and training upon customer request.
Contact Information
See more

Catalog excerpts

CRAB-1

Oil slicks optical detector Remote optical sensing of water surface with vertical laser beam MM Continuous remote optical sensing, no sampling Principle of operation Is based on the difference in light reflection from water and oil film surface Applications MM Monitoring of water surfaces (sea, harbors, lakes, rivers) MM Oil leakage detection MM Monitoring of process and waste waters MM High sensitivity: detection of oil slicks with thickness down to 0.5 micron MM No interference from scattered radiation MM Low interference from ripples and waves (beam/surface angle up to ±20°) MM Built-in data acquisition and processing MM Waterproof housing for outdoor installation MM Ex-proof option is available MM Mounting at stationary points, buoys, motor boats MM Long-term operation without maintenance MM Stationary monitoring and mobile surveys

 Open the catalog to page 1
CRAB-2

Specifications Detecting object Oil slick on water surface Min detectable oil film thickness Signal status outputs Communication ports Current loop 4–20 mA Relay Twisted pair length Power supply Power consumption Ambient conditions Distance to the water surface MM CRAB optical detector MM Power supply unit for AC 110–240 V power mains (optional) Warranty CRAB optical detectors are covered by a 12-month warranty. Service Our engineers develop a scheme and design for the detectors installation upon customer's request and provide consultations and training. LUMEX INSTRUMENTS CANADA LUMEX ANALYTICS...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.