Flow Monitoring

Flow Monitor


Calder Engineering Ltd. has the experience, staff, and resources to provide a wide range of flow monitoring services. The services offered are listed below. Collected data can be provided directly to the Client in a format consistent with the Client's request or reviewed, analyzed, and summarized.

Calder owns one of the largest private collections of flowmeters in Canada including velocity/area, pressure transducer, ultrasonic and radar based technology. In support of our flow monitoring work we have an extensive collection of related installation equipment including four wheel drive trucks outfitted with traffic control signage and lighting, all terrain vehicles, confined space entry equipment, and requisite mounting bands, weatherproof enclosures, and installation tools and equipment. Staff have certification in confined space entry, traffic control, first aid, and WHMIS.

In addition to the above, Calder Engineering Ltd. has developed proprietary designs for streamflow gauging stations, and provides design, fabrication, and installation services.

Calibration of flow meters has become standard practice in industry to comply with permit conditions, and regulations such as the Ontario MISA Clean Water Regulations and Metal Mining Liquid Effluent Regulations (MMER). Calder Engineering Ltd. has the expertise to review and assess flow monitoring installations, and calibrate all types of flow meters. Testing is undertaken in conformance with regulatory guidelines, and related ISO, CSA and ASTM specifications. Our calibration methods include dilution testing using either Rhodamine WT or Lithium Chloride, gravimetric testing, and laboratory scale model studies.

Services Offered:

  • Supply and Installation of Flow Meters
  • Supply and Installation of Streamflow Gauging Stations
  • Supply and Installation of Water Quality Sampling Equipment
  • Supply and Installation of Rainfall Monitoring Equipment
  • Supply and Installation of Weather Stations
  • Calibration of Flow Monitoring Installations
  • Data Retrieval and Maintenance of Flow Meters
  • Confined Space Entry


municipal engineering   flow calibration
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