LaserFlow Non-Contact Open Channel Flow Sensors

SKU: Laserflow

Advanced laser Doppler technology for non-contacting area velocity flow measurement

The LaserFlow® velocity sensor remotely measures flow in open channels with non-contact Laser Doppler Velocity technology and non-contact Ultrasonic Level technology. The sensor uses advanced technology to measure velocity with a laser beam at single or multiple points below the surface of the wastewater stream.

The sensor uses an ultrasonic level sensor to measure the level and determines a sub-surface point to measure velocity. The sensor then focuses its laser beam at this point and measures the frequency shift of the returned light.

The LaserFlow is ideal for a broad range of wastewater monitoring applications. It is compatible with both the Teledyne ISCO Signature Flowmeter, DuraTracker Flowmeter, and the Teledyne ISCO 2160 LaserFlow Module, depending on the type of installation.

During submerged conditions, flow measurement continues without interruption with optional continuous wave Doppler Ultrasonic Area Velocity technology.

With its specially designed mounting bracket in place, the LaserFlow can be deployed and removed from street level. This avoids the risk and expense of confined space entry. A variety of communication options enable programming and data retrieval from a remote location. Information about data quality can be recorded and transmitted with the flow data.

Additionally, built-in diagnostic tools simplify installation, maintenance, and advanced communication options reduce site visits.

For applications within the United Kingdom requiring certification by The Environment Agency, LaserFlow is designated MCERTS Class 2.


  • Brand


Isco Flowmeters


  • Non-contact velocity and level measurement

  • Single or Multiple Point measurement below the liquid surface

  • Rugged, submersible enclosure with IP68 ingress protection

  • Zero deadband from measurement point in non-contact level and velocity measurements

  • Quality readings without manual profiling

  • Bidirectional velocity measurement

  • MCERTS Class 2


  • Permanent and portable flow measurement for CSO, SSO, I&I, SSEs, CMOM, and other sewer monitoring programs

  • Shallow flow measurement in varying pipe sizes

  • Wastewater treatment plant influent, process, and effluent flow measurement

  • Industrial process and discharge flow measurement

  • Stormwater conveyance and outfall

  • Irrigation canals and channels


​LaserFlow® Non-contact Velocity Sensor

​Dimensions (HxWxD): ​14.96 x 10.3 x 22.32 in (38.01 x 26.21 x 56.7 cm)
​Laser Class: ​Class 3R
​Temperature Range: ​Operating: -20 to 60° C (-4 to 140° F)
Storage: -40 to 60° C (-40 to 140° F)
​Flow Accuracy: Accuracy @ 22° C
±0.006m (0.02 ft) at < 1 ft level change
​± 0.012m (0.04 ft) at > 1 ft level change
​Power Required: ​Input voltage: 8 to 26V DC
12V DC Nominal

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