Products and Services

Products: ASFM Advantage    Products: ASFM Monitor    Services

ASFM Advantage (brochure)

The ASFM Advantage provides the hydroelectric industry with a reliable, accurate and cost-effective method of measuring discharge, especially at low-head hydro plants with short or irregular intakes, where accurate discharge measurement has traditionally been difficult. If intake slots are available and the ASFM Advantage can be mounted on frames, overall measurement costs are significantly lower than with competitive technologies using dedicated (built-in) instruments. This is particularly significant at plants with multiple units (GMS study).

The ASFM Advantage is used for acceptance testing, field performance testing and determination of optimum settings for maximizing operational efficiency of turbines.

Features of ASFM Advantage

  • No intake/unit dewatering required if frame installed
  • Cost-effective support of unit, plant and system level optimization models.
  • Non-intrusive, no headloss and no vulnerability to debris impact.
  • No moving parts, no mechanical maintenance and no calibration.
  • Can be setup for single or multi-bay installation, with up to 30 paths distributed among the bays. The same equipment and frames can be used at all intakes at a multi-unit plant.
  • Can be adapted for fixed- or profiling frame operation.
  • Discharge results available immediately after completion of measurements.
  • Offers simple, user-friendly displays and outputs.
  • Can be operated remotely or locally.

The ASFM Advantage is backed up by a complete one-year warranty on parts and labor.

In addition to sales, AQFlow offers the ASFM Advantage on a lease / rental basis, again with a full range of support services, as per client's requirements.

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X-section of intake with ASFM frame

ASFM Advantage


screen capture of velocity profiles

Screen capture showing velocity profiles
(Click on image to enlarge)

ASFM Monitor (brochure)

Once it has been calibrated, the ASFM Monitor provides reliable, accurate and repeatable, long-term real-time monitoring of turbine discharge. It has been developed for use in low-head, short-intake plants, but can be used in higher head plants as well. It is installed on the walls of the intake, and thus can also be used for the detection of trashrack blockage and penstock rupture. If intake slots can be available long-term, frame-installed Monitors can be used for as long as needed, and then moved to another unit fully instrumented, thus reducing the monitoring costs significantly.

Features of the ASFM Monitor

  • Cost effective support of unit, plant and system-level optimization models.
  • Non-intrusive, no headloss and no vulnerability to debris impact.
  • No moving parts, no mechanical maintenance.
  • Can be set up for single- or multi-bay installation.
  • Real-time output of total discharge provided on site or to remote locations in simple, user friendly displays and outputs.
  • Detection of operational problems, such as deterioration of turbine performance due to aging or trash rack blockage.
  • Virtually maintenance free - attractive alternative to Winter- Kennedy taps.

ASL AQFlow offers a complete installation and commissioning service package, including installation of the underwater and surface components, and carrying out the Monitor calibration using the ASFM Advantage temporarily installed in the gate or stoplog slots. The ASFM Monitor is backed up by a complete one-year warranty on parts and labor.

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ASFM Monitor


ASFM products related services

Depending on the client's requirements, the ASFM is offered on a purchase or lease basis, with installation, commissioning, operation assistance, technical support and on-site training included as required.

Environment related services

Forebay circulation studies and fish survival and habitat studies are offered through ASL Environmental Sciences Inc. (brochure)


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