Hot bulb anemometer QDF-2B

Hot bulb anemometer QDF-2BIt is a portable basic instrument for measuring low wind speeds. Widely used in various fields such as heating, ventilation, air conditioning, meteorology, agriculture, refrigeration, drying, labor hygiene investigation, etc. It can be used to measure the airflow velocity both indoors and outdoors or in models. The measurement range is 0.05-5m/s, and it adopts pointer display, which is intuitive and concise.

Hot bulb anemometer QDF-2BApplication fields:

An anemometer is a series of instruments that combine the basic function of measuring wind speed with multiple functions such as calculating air volume, calculating air pressure, measuring temperature, and relative humidity. This is a portable, intelligent, and multifunctional basic instrument for low wind speed measurement, which has a wide range of applications in heating, ventilation, air conditioning, environmental protection, energy monitoring, meteorology, agriculture, refrigeration, drying, labor hygiene investigation, and other fields.

Technical Specifications

Basic range: 0.05-30 meters per second; 0.05-10 meters per second; 0.05 to 5 meters per second

Basic error: ± [(U × 3%)+0.05] meters/second; Among them, U is the measured wind speed value (the same below).

Additional error: When the deviation of the measuring head direction is within ± 15 °, the additional error of the displayed wind speed value shall not exceed ± 5% U.

The response time of the probe shall not exceed 3 seconds.

There are two measurement modes available for users to choose from: instant measurement and display, and timed measurement with average value;

After selecting the air volume function and entering the cross-sectional area of the tested air duct (in meters 2), the air volume value (in meters 3/second) can be calculated; (J-type does not have this function)

Can automatically memorize measurement data; (J-type does not have this function)

Can connect to a printer to print out measurement time and data;

The power supply of this anemometer can be used for both AC and DC;

Automatic compensation function for zero point; (Can be blocked according to the needs of special users)

Ultimate resolution: 0.01 meters per second;

Usage environment: This instrument is suitable for clean air with an ambient temperature of 0-40 ℃ and a relative humidity of no more than 90% RH;

matters needing attention.

In wind speed measurement, the thermistor on the probe must be aligned with the incoming wind direction.

When the prompt LOW appears on the right side of the monitor, it indicates that the internal battery voltage is insufficient and the battery should be replaced in a timely manner; Or use an external power source for operation.

If the instrument does not work properly due to manufacturing defects within one year from the date of leaving the factory, the manufacturer is responsible for free replacement or repair of damaged parts (except for sensitive components).

To ensure the accuracy of instrument measurement, users should calibrate on approved equipment every year.