ISCO MCERTS LaserFlow Non Contact Flowmeter

ISCO LaserFlow Flow Meter (MCERTS)

  • 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
Product Options


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 obvious advantages of this new technology are set to completely revolutionise the world of flow measurement in wastewater and open channel flow applications.

The ISCO LaserFlow is perfect for a wide range of wastewater flow applications. The LaserFlow can be utilised either as a permanent or portable flow meter. The flow meter can be connected to the permanent ISCO Signature flowmeter to provide permanent discharge compliance monitoring or to the portable ISCO 2160 LaserFlow module for flow surveys and permanent installations. The flow meter continues to work even in submerged conditions by using the optional doppler ultrasonic area velocity flow sensor.

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

Optionas 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.

Manufactured by: Teledyne ISCO
Model: ISCO LaserFlow Flow Meter (MCERTS)

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.




Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
No, all of our flowmeters are competitively priced and rental is an ideal option for cutting costs to a fraction of a full priced new flowmeter.
No problem. The quick start guide is designed to make installing the flow meters a simple task. Everything you require for set up will be found in the peli-box supplied with the flowmeter.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
The flow meters typically provide an accuracy of ±1 to 2% of rate, so if you are measuring 100l/sec then the accuracy is between 98-102l/sec.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
First, contact us for a quote. If you are happy with the quote then send us a purchase order. Or alternatively call us with credit card details and fill out and send us a rental agreement form.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
The minimum hire period for flow meters is one week.
Once you have the meter you can rent it for as long as you need it. However, it would help if you can let us know that you wish to extend the rental period. Upon return the meter is off-hired and once checked and tested, an invoice will be issued to you. Also, if you extend your rental past a 4, 8 or 12 week rental threshold, then you are entitled to a discount.
You are only charged for the period of time for which you have the flowmeter. So, if a flowmeter is returned 3 days late you are only charged for 3 extra days, and each of these days is charged at one fifth of the weeks hire cost.
Normally, you will use your own courier but if you have any problems let us know and we can arrange a pick up the day after you notify us, but you will be charged for the carriage and this cost will be added to the invoice.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
All of our standard transducers will do -40degC to +150degC, but this will depend on your application.
  • Liquid: below 50mm CFLP transducers are required, 50-1000mm CRS-402 transducers and 150-8000mm CRS-401 transducers. All the bits you need can be supplied, and delivered with the meter.
  • Gas: below 80mm CRS-402 is required, for 80-300mm the CRS-401/CRV-310 and for above 300mm the CRW-312 transducers are required.
  • High temperatures: For liquid we can measure +450degC for liquid and for gas/steam +250degC. But please consult RS Hydro.
Of course, we make a small surcharge for each set of transducers. Most applications only require one set, but on occasion some people may require two, for more diverse pipe sizes and applications.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.
After the equipment has been shipped, it is the responsibility of the hirer. However, in our experience it is rare that any of our flow meters are damaged. Our flow meters are tough, as well as accurate, and reliable.
We have hired more ultrasonic clamp on flow meters than any other company in Europe. We are now one of the world's largest distributors of GE Panametrics flow meters. We always review your application before hire so no unwanted surprises are encountered. Every effort has been made to make your flow meter hire and enjoyable experience: quick start guides to help you set up with ease, online videos for further help, rugged packaging for extra durability anywhere, and real flow engineers available for online/telephone support.