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Innovative Solutions for Flow Measurements in Hydroelectric Plants


It is with considerable sadness that we announce the passing of Josef Lampa and his wife Ivana in an unfortunate car accident on August 4, 2021. Josef was a great colleague and an important contributor to our company.  He joined ASL AQFLOW over 20 years ago, in October 2000, after retiring from a long and distinguished career in the Hydro industry.  As a young man, he left his native Czech Republic due to the clampdown after Prague Spring uprising in 1968. With Ivana, they raised their family, first in Scotland and then emigrated to Canada, living in Montreal and Vancouver.

Over these past 20 years, Josef made key contributions to the technical and business development of the Acoustic Scintillation Flow Meter, and provided us with a critical core expertise in hydroelectric engineering.

He was a person of the highest integrity who was always positive and encouraging in all of his dealings with staff and clients.   He will be greatly missed.

Josef (left) and his wife Ivana (right) at ASL’s Christmas party 2017.

Who we are

ASL AQFlow Inc.’s Acoustic Scintillation Flow Meter (ASFM)  is globally recognized as a solution to the hydroelectric industry’s toughest turbine flow measurement challenge – accurate and repeatable measurements in intakes of low-head power plants with no penstocks. The features of the method that make it a cost-effective solution for low-head plants apply equally to many higher-head plants as well.
The ASFM is a real-time, non-intrusive instrument that excels at performing:

  • flow measurement for turbine efficiency optimization
  • flow measurement before and after rehabilitation and
  • continuous monitoring of flow conditions.

In order to meet our client's needs,  AQFlow has developed two variations of the instrument, both installed in the intakes:         

  • ASFM Advantage - a portable, frame-mounted instrument for short-term measurements without intake dewatering
  • ASFM Monitor - a permanently mounted instrument for reliable and repeatable long-term flow monitoring.
Acoustic Scintillation Flow Meter at work video (wmv)

X-section of intake with ASFM

Schematic of ASFM in action

ASL AQFlow Inc.,
#1-6703 Rajpur Place, Victoria BC,
Canada V8M 1Z5
Telephone # 1-250-656-0177
Call Toll Free (North America): 1-877-656-0177
email: aqflow@aqflow.com