Hanghua Hot Wire Anemometry Model CAT04
Hanghua Hot Wire Anemometry Model CAT04

Hanghua Hot Wire Anemometry Model CAT04

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Hanghua CTA-04 is a research-purpose anemometer with high precision and low temperature drift.

It measures wind speed variations using a small tungsten wire probe placed in a Wheatstone bridge.

The system is stable, offers good temporal resolution, and is highly efficient.

The instrument can be used with tungsten wire probes ranging from 1 to 25 microns in diameter to measure wind speed variations, or with hot-film probes to measure water flow speed.

Based on frequency response performance, the Hanghua CTA-04 is divided into two major categories: the Pro series for scientific research and the Edu series for educational purposes.

Features:

The Hanghua CTA-04 has achieved performance levels comparable to other research-grade hot-wire anemometers.

Its key features include:

  • Pro series with a response frequency exceeding 50kHz*, with a maximum response frequency above 200kHz.
  • Built-in square wave testing function (500Hz).
  • Seamless expansion through RS485 network communication.
  • A built-in low-pass filter with a cutoff frequency adjustable between 1-10kHz (which can be turned off); users can adjust the filter cutoff frequency based on their needs.
  • Equipped with a platinum resistance temperature sensor (temperature measurement accuracy of 0.1°C), enabling automatic correction based on temperature changes.
  • An optional calibrator for automatic calibration.
  • Automatic system balancing and automatic probe fault alarms.
  • Internal signal processing with adjustable amplification (multiplication factor 1 to 16) and offset circuits (offset voltage 0-5V), with output signals within ±5V.

Applications:

The Hanghua CTA-04 hot-wire anemometer can precisely measure velocity fluctuations caused by millimeter-scale micro-vortices and can be applied in the following fields:

  • Fundamental research on turbulence
  • Aerospace: airflow measurement, engine development, and performance monitoring
  • HVAC (Heating, Ventilation, and Air Conditioning): indoor airflow measurement
  • Wind engineering: measurement of wind fields and flow around buildings
  • Atmospheric turbulence studies