Characteristics and application of thermic anemometers
Characteristics and applications of thermal anemometer:
1. At the top of the measuring rod probe, there is a tiny wind speed sensor (glass ball) with a nickel chromium wire coil (heating coil) and thermocouple burned inside the ball.
2. The sensor is directly exposed to the airflow. When a certain amount of current passes through the heating coil, the glass ball is heated to a certain temperature, and a corresponding thermoelectric potential appears at both ends of the thermocouple.
3. When the thermal anemometer is in still air (with zero wind speed), the thermoelectric potential is a fixed value; When measuring wind speed, the airflow causes the working environment temperature of the thermocouple to decrease, and the thermoelectric potential at both ends of the thermocouple changes, which is a function of the wind speed. Therefore, the corresponding wind speed value can be calculated through the measurement of thermoelectric potential.
4. Thermal anemometer can be used for low airflow velocity testing.
5. Small probe, clever grille and diffuser.
6. The combination of hotline and standard electric heating regulator facilitates fast and accurate measurement.
7. Low value recording, repeated reading, and data retention function.
8. Ensure the reliability of microprocessor circuits for the use of special functional features.
9. Large backlit LCD display that can simultaneously read wind speed and temperature values.
10. The portable anemometer provides fast digital measurement values.
11. Thermistor sensor used for temperature measurement, with rapid response.
