Water and Energy Flow

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Water and Energy Flow

Calibration of flow meters

If you are a measurement technician or process manager, you are aware that calibration of flow meters is important as it enables you to check your meters and optimize them. In this way, the uncertainty between the reading and the true measurement is minimized. At the same time, the basis for correct settlement of water and energy consumption is secured.

Five good reasons to collaborate with Danish Techonological Institute on calibration: 

1. Have your equipment tested and calibrated at an accredited laboratory
Our specialists help you with accredited calibration of your equipment, thus you are guaranteed the highest national level of precision on your equipment.

2. Get your low liquid flow-equipment calibrated and tested
We calibrate your equipment within very low flows, e.g., microflow meters, infusion pumps, insulin, and pain pumps. Furthermore, we provide advice on and test new products within micro flow measurement in our laboratory.

3. Get solutions adapted to your needs
With our high-tech flow test bench and extensive experience in the field, we help to prepare a unique and customer-tailored service that fits your needs exactly. This can only be done in close cooperation with you. Our flow test bench has a high degree of automation and is fully digitized, wich means that our measurements are very safe and consistent. At the flow test stand, we can help your company calibrate, test, and examine flow meters, valves, and other flow equipment for guaranteed traceability at the highest level. Watch the video below and learn more about our advanced flow test stand.

4. Get calibrated and tested equipment for climate adaptation
We also test solutions within climate adaptation. There is no standard in this area yet, which makes it challenging, and it will typically require a solution adapted to the task. Read more about the options in the case below.

5. Have valves tested
We help our customers measuring the valves and we perform pressure loss tests on the valves.

Calibration reduces the uncertainty:

Calibration of flow meters gives you knowledge of your measuring instruments' measuring capabilities and thereby enable reducing the uncertainty from your measurement data in your system. Regular calibration of your flow meter gives you knowledge of the flow meter's stability and shows whether the meter drifts over time.

Accurate measurement of water and energy flow in piping systems is important for billing purposes, in district heating supply systems and in many different industrial processes.

The Flow Laboratory at Danish Technological Institute offers testing and calibration of flow and energy meters as well as fluid related technical measurements for valves, regulators and pumps:

We are able to calibrate dimensions up to 400 mm with a flow capacity up to 1000 m3/h and at water temperatures ranging from 4 °C to 85 °C.

For many years we have offered consultancy services concerning correct flow and energy measurements to producers of measuring equipment, district heating plants and calibration laboratories.

The Flow Laboratory is appointed Danish Metrology Institute for Water Flow (volume, mass and energy flow). And as a national metrology laboratory we participate in intercomparison with other European NMI’s at the highest international level.

The laboratory is accredited by The Danish Accreditation Service (DANAK) – see www.DANAK.dk, Reg. 200 for detailed specifications of the calibration services and uncertainties.

We also do calibration and tests in the micro flow range and is accredited to 1 mL/h. You can read about the Microflow Laboratory  here

Mand der står ved flowprøvestandCase: Watts Water Technologies, inc. 

Product: Rainwater drainage for large roof areas

Solution: Improve design and secure data for input to standard within the field. The American company Watts Water Technologies, inc, which produces rainwater drains for large roof areas, usted the expertise of the DTI to gain important knowledge about their product's capabilities. Click here to read more


We offer calibration of instruments for water flow and energy flow

Water flow

  • Magnetic inductive meters
  • Vortex meters
  • Turbine meters
  • Impeller water meters
  • Voltmann meters
  • Displacement meters
  • Ultrasound meters
  • Mass flow meters
  • Venturi meters

Accredited calibration on-site of flow meters DN100 to DN1000 with Laser Doppler Velocimetry (LDV) in the range 0.25 - 17.000 m3/h with ±0.9 % uncertainty. 

Energy flow

  • Heat meters ranging up 500 m3/h at water temperatures ranging from 4 °C to 85 °C. Liquid baths for temperature difference.
  • Furthermore, we offer measurement of pressure loss and capacity of valves, water plugs and other equipment.


  • Pilot laboratory in large BCR intercomparison for water flow with participation of laboratories from 11 countries including PTB (De), NEL (UK) and SP (Se)
  • Coordinator for the Danish national flow intercomparison schemes
  • Participant in several international projects and intercomparisons i.e.:
    EUROMET 862: Intercomparison on water/heat meters at 50 °C for 50 mm pipe
    EUROMET 573: Intercomparison of small water flow facilities
    EUROMET.M.FF-K1: Intercomparison of water flow: 30 - 300 m3/h
  • Participant in national and international standardisation Groups.