Smart CTA – Model 7250

Professional and compact hot-wire anemometer for turbulence measurements and frequency analyses

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The Smart CTA is a professional but easy-to-use hot-wire anemometer. In a compact design, two CTA units are integrated which enable not only a one-dimensional probe, but also a two-dimensional probe, to use with just one main unit. The Smart CTA offers the frequency response up to 20 kHz, so for most applications it can be employed.

A hot-wire anemometer (HWA) is an instrument that measures turbulence intensity of airflow and for its frequency analyses. A HWA detects velocities from analog electrical signals continuously outputted from the CTA feedback circuit. The hot-wire sensors are very tiny, a diameter of about a few microns, and therefore bring high thermal responsiveness. Those small sensors enable to capture information of the microstructure of the flow. By traversing the probe, velocity distribution can be also measured.

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Navigate the tab section below to see this product’s Features & Benefits, Specifications, Resources, and more.

  • 2 channels of CTA integrated in one unit, extended up to 16 channels
  • Frequency response up to 20 kHz
  • Compact and easy to use
  • Exclusive software support from probe calibration to measurement
  • Investigation on air flow turbulence of rotating parts like fans, turbines, unmanned aircraft blades, etc.
  • Measurement of air flow turbulence of buildings or nearby overhead electric wire
  • Measurement of air flow fluctuation and frequency analysis of turbulence
  • Measurement of pulsating flow
  • Investigation on noise generated by air flow
  • Airflow investigations in wind tunnels

Main Unit Specifications
MethodConstant Temperature Anemometry (CTA)
Number of Channels2
Bridge Ratio12:1
Set Resistance (for probe)4.5 to 45 Ω
Current Supply to Probe< 350 mA
Feedback Circuit
Output Voltage Range0 to 10 V DC
Frequency Response< 20 kHz
Operating Environment
Temperature5 to 35 °C
Humidity20 to 90% RH
Power Supply
VoltageAC100V / 120V / 220V / 240 V (set prior to delivery)
Frequency50 Hz / 60 Hz
Dimensions320 mm x 88 mm x 280 mm
Weightapprox. 3.8 kg
FunctionProbe Calibration, Measurement, Graph Indication, Realtime Monitoring
Created FilesProbe Calibration File
Measurement File
Statistical Calculation Result File (csv)
Analysis Data
(Statistical Calculation Result File)
Average velocity value, Standard deviation,
Min. velocity value, Max. velocity value,
Turbulent intensity
Supported Operating SystemWindows 10 (64bit)

Data Sheet


Application Examples 1


Application Examples 2


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