ISCO LaserFlow Non-contact Velocity Sensor (MCERTS) with Signature

  • World's First Laser Flow Meter Single & Multi-Point Velocity Measurement
  • MCERTS Accredited Non-Contact Flow Meter
  • Quick & Easy Installation Can be installed from the surface.
  • Superior Accuracy and Reliability
  • Portable or Permanent Telemetry compatible
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LaserFlow Non-contact Velocity Sensor

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

The new ISCO LaserFlow Flowmeter is the first non contact open channel flow meter to use doppler velocity technology with integrated ultrasonic level sensor to measure flows in culverts, sewers and open channels. The LaserFlow uses a laser beam to measure velocities below the water surface at either single or multiple points. The LaserFlow can be utilised as a permanent flow meter when connected to the ISCO Signature flowmeter to provide permanent discharge compliance monitoring.

The flow meter continues to work even in submerged conditions by using the optional doppler ultrasonic area velocity flow sensor.

The ISCO LaserFlow is perfect for a wide range of wastewater flow applications. Installation is both quick and easy with the LaserFlow's specially designed mounting bracket, it is possible to install or remove the sensor from above ground, therefore eliminating the need to enter confined spaces. With external communications protocols it is easy to attach an external wireless telemetry system to retrieve data on a regular basis. As with other ISCO flow meters, it is also possible to retrieve diagnostic data to support the actual flow measurement data.

Single- or Multipoint Measurement

The LaserFlow sets itself apart from any other flow meter with its ability to take velocity measurements at either single or multiple points below the water's surface. Multi-point velocity measurement allows a profile to be deduced and hence provide a very accurate flow measurement calculation.

MCERTS Flow Meter

The ISCO Laserflow is MCERTS certified (Class 2) meeting the Environment Agency's performance requirements. Class 2 MCERTS makes this the most accurate Doppler (non contact or wetted) based flowmeter under the MCERTS scheme for the self monitoring of effluent flow. View downloads for certificate.

Standard Features

The ISCO LaserFlow has multiple features as standard:

  • Non-contact velocity and level measurement
  • Single or Multiple Point velocity measurement below the liquid surface
  • Robust, submersible enclosure fulfills IP68 environmental requirements.
  • No deadband for the measurement of level or velocity
  • No requirement for manual velocity profiling
  • Bidirectional velocity measurement

Flow Applications

Applications are numerous and cover nearly every
  • Permanent and portable flow measurement for CSO, sewer flow monitoring, compliance monitoring.
  • Shallow flow measurement in large and small pipes.
  • Wastewater treatment plant influent, process, and effluent flow measurement.
  • Industrial process and discharge flow measurement
  • Stormwater conveyance and outfall
  • Irrigation canals and channels

Options and Accessories

Options available for ISCO LaserFlow include:

  • TIENet™ 350 Area velocity flow sensor suitable for submerged flow or redundant in-stream measurement
  • Sensor mounting kits and street-level retrieval tools

Learn More

If you want to see how the LaserFlow can revolutionise your application, please contact us.

Signature Flow Meter

The new Isco Signature flow meter is designed for open channel flow monitoring applications. It supports flow measurement technologies including ultrasonic and bubbler. Flow can be calculated using standard open channel level-to-flow conversions, level to flow data points as well as user-defined equations, depending on the needs of the application. Unique features provided by the Signature flow meter help to verify data integrity. It logs key events such as power outages and changes in calibration to validate data accuracy. Stored data can be easily reviewed to detect any type of data alteration.

Manufactured by: Teledyne ISCO
Model: ISCO LaserFlow Non-contact Velocity Sensor (MCERTS) with Signature

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Discharge/Compliance Monitoring
Sewer Flow Monitoring
CSO Monitoring
Flow & Load Studies


Primary Measurement:a TIENet™ 360 LaserFlow™ Sensor
Size (HxWxD) 38.01 x 26.21 x 56.7 cm
(14.96 x 10.3 x 22.32 in)
Weight 8.7 kg (19.2 lbs)
Materials Conductive Carbon Filled ABS, SST,
Conductive Kynar®b,
Anodized Aluminum, UV-Rated PVC
Cable Lengths 10 or 23 m (32.8 or 75.5 ft)c
Enclosure IP68
Certifications CE EN61326; FDA CDRH
21CFR1040; IEC 60825-1
Laser Class Class 3R
Operating: -20 to 60 °C (-4 to 140 °F)
Storage: -40 to 60 °C (-40 to 140 °F)
Power Required Input voltage: 8 to 26 VDC
12VDC Nominal
Flow Accuracy ±4% of Readingd
Technology Non-Contact, Subsurface Laser Doppler Velocity (patented)
-4.6m/s to 4.6 m/s (-15 ft/s to 15 ft/s)
Maximum distance from liquid surface to bottom of sensor 3m (10 ft)
Minimum depth 0.01 m (0.5 in)
Direction Selectable Bidirectional Measuremente
Accuracy ±0.5% of reading ±0.03 m/s (0.1 ft/s)
Minimum Velocity 0.15 m/s (0.5 ft/s)
Technology Non-Contact Ultrasonic
0 to 3 m (0 to 10 ft)
from measurement point
@ 22 °C (72 °F)
±0.006 m (0.02 ft) at ≤1 ft level change ±0.012 m (0.04 ft) at > 1 ft level change
Coefficient within
± 0.0002 x D (m) per degree C ± 0.00011 x D (ft) per degree F (D = Distance from transducer to liquid surface)
Beam Angle 10° (5° from center line)
Ultrasonic Signal 50KHz
Deadband Zero deadband from bottom of LaserFlow sensorf

Optional Secondary Measurement:
TIENet™ 350 AV Sensor
Probe Size
19 x 33 x 152 mm
(0.75 x 1.3 x 6.0 in)
Materials Sensor: Epoxy, chlorinated CPVC, SST
Cable: UV-Rated PVC
Certifications CE EN61326
0 to 70 °C (32 to 158 °F)
Technology Submerged Continuous Wave Doppler
-1.5 to 6.1 m/s (-5 to 20 ft/s)
Accuracy ±0.03 m/s (±0.1 ft/s) from -5 to 5 ft/s
±2% of reading from 5 to 20 ft/s,
Uniform velocity profile
Minimum Depth 25 mm (0.08 ft)
Frequency 500 kHz
Technology Submerged Differential Linear Pressure
0.01 to 3.05 m (0.033 to 10 ft)
Accuracy ± 0.10% of full scale
10.5 m (34 ft)
Stability ±0.007 m/yr (±0.023 ft/yr)

a. All specifications are subject to change without notice.
b. Kynar® is a registered trademark of Arkema, Inc.
c. Custom cable lengths also available.
d. Under normal flow conditions.
e. Turbidity > 20 NTU. Distance < 48 inches.
f. Deadband for remote TIENet™ 310 ultrasonic level sensor varies, depending on the type of mounting hardware.