The standard operation of a digital anemometer for wind speed is as follows:
1、 Preparation before use
Check the integrity of the equipment
Confirm that the appearance of the instrument is undamaged and the battery is fully charged (it is recommended to use alkaline batteries or specialized rechargeable batteries).
Check whether the sensor probe is clean, free of dirt or wear, and ensure that the probe is well sealed (if a sealing cap is required).
Familiar with instrument components: anemometer body, sensors, data cables, chargers, function buttons (such as power, unit switching, data retention, backlight, etc.).
Confirmation of environmental conditions
The measurement area should be open, ventilated, and away from obstacles such as buildings and trees to avoid turbulence interference.
Avoid environments with high temperature, humidity, corrosive gases, or strong electromagnetic fields to prevent instrument damage or measurement errors.
Preheating and calibration (if necessary)
Some models require preheating (such as the QDF-6 model showing a 5-second countdown after startup), and the display should be 0.00m/s after preheating is complete.
If the instrument supports calibration function, zero calibration or full calibration can be performed according to the instructions (such as adjusting the meter pointer through the "calibration switch").
2、 Operation steps
Startup and Unit Settings
Press the power switch, and the instrument will display the wind speed value after starting.
Select the wind speed unit (such as m/s, km/h, ft/min, etc.) through the "UNIT" button and adjust it according to your needs.
Measurement mode selection
Real time wind speed measurement: directly read the dynamic wind speed value on the display screen.
Maximum/Minimum/Average Measurement: Switch modes using the "MODE" or "MAX/MIN" keys to record extreme or average values.
Data retention function: After stable measurement, press the "HOLD" key to lock the reading for easy recording.
Sensor placement and measurement
Handheld measurement: Hold the anemometer and align the sensor probe (such as the fan plane or hot ball element) vertically with the wind direction to maintain stability.
Fixed measurement: Fix the anemometer on the tripod or measurement position, ensuring that the angle between the sensor and the wind direction is ≤ 20 °, to avoid errors caused by tilting.
Multi point measurement:
For large areas such as smoke exhaust vents, measuring points are divided according to the vent area (for example, 5 measuring points are taken for small section vents, and measuring points are distributed in a rectangular or bar shape for large section vents).
Keep the probe perpendicular to the air outlet at each measuring point, record the wind speed value, and calculate the average value.
Data recording and preservation
Manual recording: directly read display screen data and record measurement time, location, and other information.
Automatic storage: Some models support data storage function (such as saving 100 sets of data), press the "REC" button to store, and read historical data through the "READ" button.
3、 Post use maintenance
Shutdown and storage
After the measurement is completed, turn off the instrument by pressing the power switch and remove the battery (if not used for a long time).
Clean the sensor probe to avoid dust or dirt accumulation, and cover it with a sealing cap (if necessary).
Organize instruments, sensors, data cables, etc. and store them in a dry, ventilated, and dark place.
Regular inspection and calibration
Regularly inspect the appearance of the instrument, battery level, and sensor status to ensure no damage or aging.
Regularly calibrate according to the instructions (such as once a year), or send it to the metrology department for calibration to ensure measurement accuracy.
4、 Precautions
Avoiding operational errors
Do not touch the sensor probe with your hands to prevent contamination or damage to sensitive components (such as the hot bulb of a hot bulb anemometer).
When measuring, avoid the angle between the probe and the wind source being too large (recommended ≤ 20 °), otherwise the reading needs to be corrected.
Do not use in rain or humid environments to prevent electric shock or short circuit.
Safety Reminder
Operators should wear protective equipment (such as gloves and masks) to avoid direct operation in harsh environments.
If the instrument displays abnormalities (such as no readings, frequent power outages), immediately stop using and check the battery or contact a professional for repair.