Hot ball anemometer QDF-6 thermoelectric anemometer

Hot ball anemometer QDF-6 thermoelectric anemometer Technical Specifications

1Measurement range:0.05～30m/s

2Measurement accuracy:≤3%(Full scale)

3Response time:≤3s

4Display: Four digit display

5Resolution:0.01m/s

6Power supply:4 section5 Alkaline battery

7Working environment: Temperature -10～40℃ humidity≤85％RHatmospheric pressure970～1040hPa

8External dimensions:190*90*40（㎜）

9Weight:380g

Hot ball anemometer QDF-6 thermoelectric anemometer QDF-6Thermal sensitive probe of digital anemometer:

The working principle of the thermal sensitive probe of the anemometer is based on the cold shock airflow taking away the heat from the heating element, and maintaining a constant temperature with the help of an adjustment switch,The current and flow rate are proportional to each other. When using a thermal sensitive probe in turbulence, airflow from all directions simultaneously impacts the thermal element, resulting inAffects the accuracy of measurement results. When measuring in turbulence, the reading of the thermal anemometer flow sensor is often higher than that of the rotary probe. The above phenomenonIt can be observed during the pipeline measurement process. According to different designs for managing turbulent flow in pipelines, it may even occur at low speeds. Therefore, the anemometer has measuredCheng should be carried out in the straight section of the pipeline. The starting point of the straight section should be at least at the measurement point10×D（D=Pipeline diameter, unit:CM）External; destinationAt least after the measurement point4×DHere. The fluid cross-section must not have any obstruction.

The QDF-6 hot ball anemometer is manufactured based on the working principle of a thermal sensitive probe, which is based on the cold shock airflow carrying away the heat from the heating element. It has the advantages of accurate measurement and stable indication. It is a wind speed instrument used for measuring pipeline environment, heating, air conditioning and cooling, environmental protection, energy conservation monitoring, meteorology, agriculture, refrigeration, drying, labor hygiene investigation, clean workshop, and chemical fiber textile measurement.