Environment
 
    Non-Contact Laser Velocity Sensor

Non-Contact Laser Velocity Sensor


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The Raphael Non-Contact Laser Velocity Sensor measures flow, typically in gravity-fed systems, for applications in wastewater and stormwater drainage as well as in agricultural supply water and run-off.

Raphael offers an accurate, cyber-secure, and streamlined solution using best-in-breed sensors that is effective both for freshwater and wastewater discharge monitoring applications.

Raphael's Non-Contact Laser Velocity Sensor measures velocity and liquid depth of influent and effluent in real-time using contactless radar and ultrasonic technology in pre-defined pipe sizes, which enables continuous operations and situational awareness. By contrast, substitute solutions in the market typically involve instrumentation relying on acoustics. Compact acoustic sensors are suitable inside the flow for freshwater, but are not a viable solution for wastewater applications.

Features

  • Use Real-Time Data to Control Sewer Flows
  • Non-Contact Discharge Monitoring
  • Robust IP 68 / NEMA 6P for Aggressive Environments

Applications

  • Sewer Monitoring & Control
  • Monitoring of Storm Discharge into the Natural Environment
  • Discharge Reuse Cost & Energy Savings
Velocity Measurement
MethodNon-Contact, Subsurface Laser Doppler Velocity
Range-4.6 m/s to 4.6 m/s (-15 ft/s to 15 ft/s)
Accuracy± 0.5% of reading ± 0.03 m/s (0.1 ft/s)
Min. Velocity0.15 m/s (0.5 ft/s)
Max. Distance3 m (10 ft) from liquid surface to bottom of sensor
DirectionSelectable Bidirectional flow measurement.
Requires turbidity > 20 NTU
Level Measurement
MethodUltrasonic
Range0 to 3 m (0 to 10 ft) from measurement point
Accuracy at 22°C (72°F)± 0.006 m (0.02 ft) ≤ 1-ft level change;
± 0.012 m (0.04 ft) ≥ 1-ft level change;
Temperature Coefficient± 0.0002 x D (m) per °C
± 0.00011 x D (ft) per °F
(D = Distance from transducer to liquid surface)
Beam Angle10° (5° from center line)
Ultrasonic Signal50 KHz
DeadbandZero deadband from bottom of sensor.
General
Size (H x W x D)38 cm x 26.2 cm x 56.7 cm (15 in. x 10.3 in. x 22.3 in.)
Weight8.7 kg (19.2 lbs)
Operating Temperature-20°C to 60°C (-4°F to 140°F)
Flow Accuracy± 4% of reading under normal conditions
Cable Length32.8 to 75.5-ft Cable
Custom cable lengths also available.