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Lumex Instruments (0890278 B.C. Ltd.) Unit 207, 31510 Gill Ave., Mission, B.C., V4S0A1, Canada 31510 (0890278 B.C. Ltd.) Unit 207, 31510 Gill Ave., Mission, B.C., V4S0A1, Canada
+1 866-233-6057, +1 604 820-4486, sales@lumexinstruments.com

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Analysis of recombinant protein purity and heterogeneity by capillary electrophoresis
CRAB - OPTICAL SENSOR OF THE WATER SURFACE OIL SLICKS

CRAB - OPTICAL SENSOR OF THE WATER SURFACE OIL SLICKS

Optical sensing of water surface with IR radiation
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CRAB is an easy-to-operate, active optical sensor of the water surface oil slicks. The instrument detects the presence of oil using laser sensing with a vertical spot light beam and measuring the differences in the reflection properties of water and oil products.

The optimized optical scheme, signal processing routine, and modulation of the light beam intensity provide a drastic decrease of the influence of the wind waves and background illumination on the measurement results.

features and benefits
  • Non-contact active optical sensor, no sampling
  • High sensitivity: detection of oil slicks > 0.5 micron
  • Low interference from scattered radiation due to the laser emitter power
  • Enhanced detection under different surface conditions: possible waviness of the wave surface up to 20o
  • Conveniently mounted above the water on the customized height (up to 20m)
  • The dust and waterproof housing: CRAB can be installed on a bridge, buoy, platform, etc.
APPLICATIONS
  • Ecological monitoring of water surfaces
  • Monitoring of industrial waste water
PRINCIPLE OF OPERATION

CRAB consists of an emitter based on semiconductor laser diode and single-channel optoelectronic receiving system. The measurement data is processed by a built-in microcontroller (ATMEGA16).
After the preset time (from 30 to 60 seconds), the normalized signal is received on the analog output (current loop 4-20 mA) and the digital output (RS-485 interface) of the instrument. When the oil products appear, the signal exceeds the threshold level. At the same time, the internal relay transmitter is activated.

equipment and options
  • CRAB optical sensor
  • Power module
warranty

CRAB optical sensors are covered by a 18-month warranty.

services

Our service engineers install CRAB optical sensors at the height specified by a customer. Consultations and initial training specific to the customer needs complete the installation.

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Sensitivity (minimal detectable oil slick thickness) 0.5 μm
Water surface agitation degree Up to 20 °
Distance to the water surface Up to 20 m
Distance to the receiving system Up to 1000 m
Communication ports RS485, current loop 4–20 mA
Power supply 12-15V, 0.2A
Power consumption Up to 3W
Ambient conditions Temperature: -10 ºC to +50 ºC
Humidity: up to 100% (rain)
Dimensions1 160x160x110 mm
300х300х200mm
Weight Up to 2 kg (55 lbs)


1 - At а distance up to 5m the dimensions are 160х160х90mm. If the distance is from 5m to 20m, the dimensions are up to 300х300х200mm.