Airflow measurement

HVAC Airflow & Performance Verification

Quantitative measurement of air velocity, volume flow and differential pressure — the numbers commissioning, balancing and cleanroom qualification are judged against. The measurement route follows the geometry: capture hood at a terminal, traverse in a duct, or a differential-pressure reading across a barrier.

Kanomax TABmaster airflow capture hood with detachable micromanometer, used for direct volume-flow measurement at a supply diffuser
Direct volume-flow measurement at the terminal — one of several routes, chosen by the geometry
Measurement scope

Measure the quantities that demonstrate airflow performance

Primionics supplies the measurement technology used during commissioning, testing and balancing, and during cleanroom qualification. Commissioning itself is a process owned by the commissioning authority and the contractor — the instrumentation supports it rather than constituting it.

Quantitative

Velocity, volume flow, pressure and leakage

Instrumented measurement of velocity, volume flow, differential pressure and leakage, producing numbers that are compared against a design figure or an acceptance criterion.

Qualitative

Airflow direction and interaction

Fog-based observation of flow direction, unidirectional behaviour, turbulence and dead zones. It produces no numbers and does not replace quantitative measurement.

Airflow Visualisation →

Governing references

Acceptance criteria are project-specific Velocity, volume flow, differential pressure and leakage rate are evaluated against the design basis, project specification, cleanroom requirement or applicable regional commissioning practice.

Measurement quantity

Airflow Measurement Parameters

  • Air velocityAt a filter face, in a duct traverse or at a grille — the base measurement most others derive from.
  • Volume flowDirectly with a capture hood at a terminal, or computed from a velocity traverse and the duct area.
  • Differential pressureRoom-to-room and room-to-corridor pressure difference, cascade direction and stability.
  • Duct and grille measurementTraverse measurement inside ductwork and at supply and return terminals.
  • Duct leakageLeakage rate of a ductwork section against the specified class.
  • Temperature where applicableMeasured alongside velocity where the instrument supports it and the specification calls for it.
  • Balancing supportMultipoint and multi-channel measurement to compare terminals across a system in one session.
Model-Specific Measurement Capability

No single instrument measures every quantity above. Velocity, temperature, humidity and pressure capability varies by model and by which probe is fitted — the product page carries the parameters that model actually measures.

Instrument selection

Select the instrument by quantity and measurement location

Requirement-to-route mapping. The linked product page carries the complete specification.
Measurement requirementTechnology route
Volume flow at a terminalKanomax TABmaster capture hoods 6710 / 6720
Handheld velocity measurementKanomax Anemomaster 6036 · Anemomaster LITE 6006
High-accuracy multi-parameter probe workKanomax Climomaster 6501 Series — eight interchangeable smart probes
Multipoint / simultaneous measurementKanomax Multi-Channel Anemometer PRO 1590 — expandable to large channel counts
High-temperature airflowKanomax high-temperature Anemomaster PRO 1595 / 1596
Pressure and pitot measurementKanomax Micromanometer 6720-DP
Duct leakageKanomax Duct Air Leakage Tester 6905
Fixed airflow transmissionKanomax Airflow Transducer 6333

Scroll the table horizontally →

Cleanroom context

Airflow Measurement in Cleanroom Qualification

Several cleanroom qualification activities are airflow measurements in substance: supplied air volume, terminal filter face velocity, airflow uniformity and room pressure difference. The selected instruments must match the required range, location, traverse method and uncertainty.

That makes this route genuinely shared between building services and cleanroom work — but the acceptance criteria come from the cleanroom specification, not from a general ventilation standard.

Cleanroom & Controlled Environment Solutions →
Kanomax Multi-Channel Anemometer PRO Model 1590 for simultaneous multipoint airflow measurement across a system
Multipoint measurement — comparing terminals across a system in a single session.

Configure an airflow measurement set

Share the quantities to be measured, the velocity and temperature ranges, the terminal or duct geometry, the number of measurement points and the reporting the project requires.