Measuring technology for flow rate, mass flow rate and flow velocity

High pressure volume flow calibration facility - pressures up to 10 bar, 1 MPa, nominal values up to DN200

Atmospheric volume flow rate test bench - 5 ... 11,000 m³/h

Wind tunnel with laser-Doppler anemometer reference 0.1 ... 70 m/s

High temperature flow rate test bench 0.5 ... 70 m/s, 20 ... 400 °C

High temperature flow rate test bench 0.5 ... 70 m/s, 20 ... 400 °C

Water calibration facility - 0.5 ... 100 m³/h, nominal values up to DN150

Accredited as per
DIN EN ISO/IEC 17025 by

Member of German
Calibration Service (DKD) 

Certified as per
DIN EN ISO 9001 by

The Höntzsch Calibration Laboratory - DAkkS accredited and Member of DKD (German Calibration Service)

(DAkkS is the national accreditation body for the Federal Republic of Germany)

To satisfy the ever-increasing demands on the accuracy and application range of our flow sensors, it is necessary to subject our calibration technology to the same degree of continuous enhancement as our other products. In our laboratory we calibrate flow sensors on numerous test stands fitted with state-of-the-art equipment. Our testing facilities are ranked among the most accurate references in measuring and control technology worldwide. The DAkkS accreditation of our calibration laboratory for flow velocity, flow rate, volume flow rate as well as mass flow of gases according to DIN EN ISO/IEC 17025 rounds off our range of calibration services. 

Range of DAkkS calibration services:

Measured variable Calibration medium Range Measurement uncertainty
Flow velocity air 0.1 to 70 m/s 0.5 % but not
less than 0.01 m/s
Flow rate air
under atmospheric
conditions
22 to < 400 l/h
≥ 0.4 to 57.9 m³/h
5 to < 400 m³/h
≥ 400 to 5,500 m³/h
0.39 %
0.36 %
0.30 %
0.25 %
Mass flow rate air
under atmospheric
conditions
26 to < 480 g/h
≥ 0.48 bis 69.5 kg/h
6.0 bis < 500 kg/h
≥ 500 bis 6,600 kg/h
0.39 %
0.36 %
0.30 %
0.25 %

Our range of services for ISO calibrations / factory calibrations:

Measured variable Calibration medium Range Measurement uncertainty
Flow velocity air 0.1 to 70 m/s 0.5 % but not
less than 0.01 m/s
Flow rate air
under atmospheric
conditions
22 to < 400 l/h
≥ 0.4 to 61 m³/h
1.5 to < 400 m³/h
≥ 400 to 11,000 m³/h
0.39 %
0.36 %
0.30 %
0.25 %
Flow rate up to 10 bar absolute
pressure for air and
other inert gases
0.2 to 4,000 m³/h up to 1.0 %
Flow rate various gases:
argon, propane,
hydrogen, natural gas,
landfill gas, helium, air,
butane, oxygen, inert
gases, non-aggressive
gases
0.06 to 100 m³/h 0.8 %
Flow velocity water 0.02 to 3.5 m/s
(in DN100 pipe)
0.7 % + 0.002 m/s
Flow rate water 0.5 to 100 m³/h 0.7 % + 0.057 m³/h
Volume flow numerous liquids 0.02 to 9 l/min 1.0 %
Temperature water 20 to 100 °C 0.1 K

We can calibrate your instruments on the following test stands:

  • DAkkS accredited open jet Göttinger-type wind tunnel in the range 0.1 to 70 m/s with best measurement capability 0.5 % but not less than 0.01 m/s
  • DAkkS accredited atmospheric volume flow rate test facility with a calibration range from 5 to 11,000 m³/h and best measurement capability of 0.25 %. Mass flow rate of 6.0 to 6,600 kg/h can also be measured here.
  • DAkkS accredited Nozzle flow rate test bench with a calibration range from 0.0022 m³/h to 57.9 m³/h (22 l/h to 57,900 l/h or 0.367 l/min to 965 l/min) and best measurement capability of 0.36 %. Mass flow rate of 0.026 kg/h to 69.5 kg/h can also be measured here.
  • High pressure volume flow test bench as a closed construction with a calibration range between 0.20 to
    4000 m³/h. Thanks to the design, pressure from 1,000 to 10,000 hPa as well as temperature, via a heat exchanger, in the range from 20 to 45 °C can be varied. The calibration medium is air, although other inert gases can be used. Best measurement capability is up to 0.5 %
  • Real gas test stand with a calibration range of 0.06 to 100 m³/h and best measurement capability of 0.8 %. Besides air, we can calibrate in many other gases or gas mixtures such as argon, propane, hydrogen, natural gas, landfill gas, helium, butane, oxygen, all noble gases and non-aggressive gases 
  • Volume flow of liquids with a calibration range between 0.02 to 9 l/min (0.0012 to 0.5 m³/h) and best measurement capability of 1 %
  • Volume flow of water with a calibration range between 0.5 to 100 m³/h (flow velocity for water 0.02 to
    3.5 m/s) and best measurement capability of 0.7 %
  • High temperature flow rate test bench up to 400 °C for velocities of 0.5 to 70 m/s with best measurement capability of 2-3 %
  • Further test facilities for flow and temperature

We also extend our accredited and certified calibration services to flow measuring equipment from other manufacturers. We can also adjust non-Höntzsch instruments.

 

Höntzsch guarantee promise. A service you can rely on!

A complete and comprehensive calibration service with "as found" inspection, maintenance and adjustment, including DAkkS calibration, can be carried out in our laboratory in just one go, reducing costly downtime to a minimum!

Each calibration comprises:

  • checking mechanical parameters
  • electrical safety testing to VDE 0702 
  • safety-related assessment of relevant ATEX/CSA properties
  • checking relevant electronic parameters to ensure error-free operation
  • necessary adjustments for achieving the smallest possible measurement uncertainty
  • minor repairs / maintenance
  • software updates free of charge
  • administration of records 

and includes a free performance guarantee for the next 12 months, regardless of the age of the sensor.
If a sensor fails, we carry out the necessary repairs without charge, except for parts subject to wear such as vane wheels or components, not included in the specifications. 

Please click here - Document U325, Document U183, Info - or call us for more detailed information about our calibration laboratory and services.
 

DAkkS Calibration

In character with our standards of high quality, our calibration laboratory is DAkkS accredited in accordance with DIN EN ISO/IEC 17025. A complete calibration service consisting of an "as found" inspection, maintenance and adjustment with DAkkS calibration, previously known as DKD, can be carried out in our laboratory in one transaction. DAkkS accredited calibration does not only apply to all Höntzsch anemometers, but also to those of other manufacturers like Sensyflow Thermal mass flowmeters as well as nozzles, orifice plates and V-Cone flow meters in accordance with the various parts of ISO 5167 (Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full).

Höntzsch sets standards in measurement uncertainties!
The volume flow rate of gases in the measuring range between 0.0022 m³/h to 5,500 m³/h can be DAkkS calibrated with a flow-dependent smallest measurable measurement uncertainty of up to 0.25 %. We calibrate your nozzles (Venturi nozzles), orifices and cone flow meters (V-cone) on our volume flow test bench to maximum accuracy in accordance with the various parts of DIN EN ISO 5167.

We calibrate the flow velocity of gases in the range from 0.1 m/s to 70 m/s, with a smallest measurable measurement uncertainty of up to 0.5 % (see list). Thanks to our high-precision differential pressure measurement system, measurement uncertainties of less than 1 % can be realized for the calibration of Pitot tubes in our wind tunnel. With this high-precision calibration equipment we run one of the most precise laboratories worldwide!

Additional DAkkS calibrations with the measured variables gas flow rate and mass flow rate as well as the volume of flowing gases and the mass of flowing gases are also possible. The measuring ranges can be found in the list. 

What does DAkkS accreditation mean?
This accreditation of our calibration laboratory to DIN EN ISO/IEC 17025 is confirmation by the German Accreditation Body, that our calibrations are traceable to PTB (Federal Institute of Technical Physics) national standards and norms and ensures precision of the applied references. We guarantee that all our measuring instruments not within the scope of this accreditation are calibrated under the auspices of a certified quality assurance system in accordance with DIN EN ISO 9001 using references which can be traced to national standards and norms.
 

DKD Calibration

DKD is a body of accredited calibration laboratories under the auspices of the Federal Institute of Technical Physics (PTB). Höntzsch is a full member of the German Calibration Service (DKD), Technical Committee 11. Flow Measured Variables. The principal objective of the DKD is the advancement of the calibration service in terms of dissemination of the unit, especially in regard to promotion of information exchange between members and creating calibration guidelines which represent the best available technology.

In order to secure worldwide uniformity of the calibration practice for our international customers, Höntzsch works closely with other national and international metrological institutions. The objective will be achieved through intensive exchange of research findings and comprehensive, international comparative measurements. In close cooperation with national and international accredited calibration laboratories, we are working consistently towards further development of calibration techniques and the reduction of measurement uncertainties.

Höntzsch also extends its accredited and certified calibration services to flow measuring equipment from other manufacturers.

Click here U325 , U183 , Info for further documents and information about our calibration centre and services, or just give us a call!
 

Contact


Downloads

Document U183 Info Document U325