When a test point requires both flow velocity and direction, a conventional instrument that reports only one velocity value leaves part of the picture missing. A miniature five-hole probe anemometer combines a five-hole probe, pressure measurement, environmental sensing, and data processing in a portable unit. It can measure pressure, flow velocity, and flow direction at the same time.
The benefit is not simply that more sensors fit inside one enclosure. Acquisition and calculation are connected in a single workflow. Rather than recording each port pressure separately and then moving the data into another tool, engineers can measure, view, and analyze results in the same system, making field work easier to manage.
The benefit is not simply that more sensors fit inside one enclosure. Acquisition and calculation are connected in a single workflow. Rather than recording each port pressure separately and then moving the data into another tool, engineers can measure, view, and analyze results in the same system, making field work easier to manage.
How Five Pressure Ports Resolve the Incoming Flow
A five-hole probe typically has one center port and four surrounding pressure ports at the tip. When the probe faces the incoming flow, each port responds differently. The resulting pressure differences are used to determine flow velocity and direction.
Compared with an instrument that reports only a single velocity value, a five-hole probe provides a more useful picture of the flow field. Test personnel can see changes in velocity and identify the direction of flow deflection, making local flow behavior easier to interpret.
Compared with an instrument that reports only a single velocity value, a five-hole probe provides a more useful picture of the flow field. Test personnel can see changes in velocity and identify the direction of flow deflection, making local flow behavior easier to interpret.
A Single Chain for Acquisition, Calculation, and Display
WINDTUNER's third-generation miniature five-hole probe anemometer contains five pressure-sensor modules, one barometric-pressure module, and one ambient-temperature module. PT100 sensors and thermocouples can be connected externally. By acquiring pressure and temperature parameters together, the instrument provides the data needed to calculate flow velocity and direction.
The instrument also provides real-time visualization, control, and data analysis. Test personnel can view measurement status and results on site instead of repeatedly connecting devices, exporting files, and reconciling separate datasets. Its portable enclosure and mobile power supply are useful when measurement points change frequently or the instrument must move between test locations.
The instrument also provides real-time visualization, control, and data analysis. Test personnel can view measurement status and results on site instead of repeatedly connecting devices, exporting files, and reconciling separate datasets. Its portable enclosure and mobile power supply are useful when measurement points change frequently or the instrument must move between test locations.
Multi-Point Testing Takes More Than Additional Probes
When a project needs simultaneous measurements at several locations, adding probes is only part of the job. Measurements from those points may also need to be acquired and compared in a coordinated way. WINDTUNER's system supports distributed, multi-node testing, so users can expand the number of measurement points to match the test layout and compare local flow conditions more efficiently.
This approach can be used for a range of wind tunnel and field airflow tests, but the probe design, number of measurement points, and layout still need to reflect the flow-field size, directional variation, and available installation space. In areas with significant blockage, steep gradients, or complex changes in flow angle, suitable probe placement and calibration conditions remain essential to reliable results.
This approach can be used for a range of wind tunnel and field airflow tests, but the probe design, number of measurement points, and layout still need to reflect the flow-field size, directional variation, and available installation space. In areas with significant blockage, steep gradients, or complex changes in flow angle, suitable probe placement and calibration conditions remain essential to reliable results.
From Taking a Reading to Understanding the Flow
The practical value of a flow-measurement instrument comes down to how quickly test personnel can obtain results they understand. Combining five-hole pressure measurement, environmental data acquisition, real-time display, and analysis helps teams set up measurement points, collect data, and assess the flow field more efficiently. It also reduces the risk introduced by manual transcription and repeated data handling.
For users who need pressure, flow velocity, and direction together, the miniature five-hole probe anemometer provides a more complete measurement than an instrument limited to a single airspeed value. WINDTUNER also designs, manufactures, and calibrates pneumatic probes, allowing the probe and measurement setup to be configured around the actual flow field, installation space, and test procedure.
For users who need pressure, flow velocity, and direction together, the miniature five-hole probe anemometer provides a more complete measurement than an instrument limited to a single airspeed value. WINDTUNER also designs, manufactures, and calibrates pneumatic probes, allowing the probe and measurement setup to be configured around the actual flow field, installation space, and test procedure.
