1. Introduction
The Mestek AM620 is a compact and intelligent digital anemometer designed for accurately measuring various environmental parameters. This device is equipped with high-sensitivity blades and sensors, ensuring fast response times and precise data collection. It is suitable for a wide range of applications including wind energy, meteorology, industrial use, navigation, environmental protection, and ventilation engineering.
2. Product Features
The Mestek AM620 offers a comprehensive set of features for environmental monitoring:
- Six measurement modes: Wind speed, Air volume, Wind power, Wind temperature, Dew point, Wet bulb temperature.
- Data locking (HOLD function).
- Minimum and Maximum values locking (MIN/MAX function).
- Eight-blade fan for high sensitivity and accurate data collection.
- Measurement of Ambient temperature and Ambient humidity.
- 180° rotating fan for flexible measurement in various scenarios.
- LCD with automatic backlight for visibility in dark environments.
- Low voltage prompt.
- Automatic shutdown feature to conserve battery life.
3. Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- 1 x Mestek AM620 Digital Anemometer
- 1 x Packaging box
- 1 x User Manual
- 1 x Screwdriver
4. Setup
4.1 Battery Installation
The Mestek AM620 requires 3 AAA batteries (not included) for operation. Follow these steps to install or replace the batteries:
- Locate the removable battery compartment cover on the back of the device.
- Use the provided screwdriver to open the battery compartment.
- Insert 3 AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover and secure it with the screw.
5. Operating Instructions
5.1 Power On/Off
Press the POWER button to turn the device on. The device will automatically shut down after approximately 15 minutes of inactivity to conserve battery life.
5.2 Switching Measurement Modes
Short press the UNIT button to cycle through different wind speed measurement modes (m/s, km/h, knots, ft/s, mile/h, ft/m).
5.3 Switching Temperature/DP/WB
Short press the SET button to switch between Ambient Temperature, Dew Point (DP), and Wet Bulb Temperature (WB) measurements.
5.4 Switching Temperature Units (°C/°F)
Long press the FUNC button to switch the temperature display between Celsius (°C) and Fahrenheit (°F). The default settings are restored after shutdown.
5.5 Data Hold (HOLD)
Press the HOLD button to freeze the current reading on the display. Press it again to release the hold function.
5.6 Minimum/Maximum Values (MIN/MAX)
Press the MIN/MAX button to view the minimum or maximum recorded values during a measurement session. Press repeatedly to cycle through MIN, MAX, and current readings.
6. Usage Scenarios
The Mestek AM620 is a versatile tool applicable in various fields:
- Wind Energy: Assessing wind conditions for turbine placement and performance.
- Meteorology: Local weather monitoring and data collection.
- Industry: HVAC system testing, airflow measurement in ducts.
- Navigation: Determining wind speed and direction for maritime activities.
- Environmental Protection: Monitoring air quality and dispersion of pollutants.
- Highways & Airports: Wind monitoring for safety and operational efficiency.
- Fan Manufacturing: Testing fan performance and airflow.
- Ventilation Engineering: Optimizing ventilation systems in buildings.
7. Maintenance
7.1 Cleaning
To ensure accurate readings and prolong the life of your anemometer, keep it clean. Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
7.2 Battery Replacement
When the low voltage prompt (battery symbol) appears on the LCD, replace the batteries as described in Section 4.1. Remove batteries if the device will not be used for an extended period.
8. Troubleshooting
- Device does not power on: Check battery installation and ensure batteries are not depleted.
- Inaccurate readings: Ensure the fan blades are free from obstructions and clean. Verify the device is held correctly in the airflow.
- Low battery indicator: If the battery symbol appears on the LCD, replace the AAA batteries.
- Automatic shutdown: This is a normal power-saving feature. The device will turn off after approximately 15 minutes of inactivity.
9. Specifications
| Parameter | Value |
|---|---|
| Operation Altitude | Maximum 2000m |
| Operation Mode | Wind speed frequency conversion |
| Display | LCD |
| Maximum Display | 9999 |
| Sampling Rate | About 0.4 seconds |
| Automatic Shutdown | About 15 minutes |
| Battery Undervoltage Indication | LCD displays battery symbol |
| Operation Current | About 40mA |
| Power Supply | 1.5V x 3 AAA batteries |
| Resolution Ratio | 0.01m/s, 0.1°C, 1%RH |
| Ambient Temperature Range | -20°C ~ 60°C / -4°F ~ 140°F |
| Ambient Temperature Accuracy | ±1.0°C / ±2.0°F |
| Dew-point Temperature Range | -50°C ~ 60°C / -58°F ~ 140°F |
| Wet-bulb Temperature Range | -20°C ~ 60°C / -4°F ~ 140°F |
| Humidity Range | 0 ~ 99% RH (no condensation) |
| Humidity Accuracy | ±5% RH |
| Size | 252mm x 84mm x 33mm |
| Weight | About 210g (batteries excluded) |
| Certification | CE, FCC, RoHS |
Note: The above data is for reference only; specific data shall be subject to actual measurement.
9.1 Wind Speed Measurement Indicators
| Wind Speed Unit | Measure Range | Resolution Ratio | Accuracy |
|---|---|---|---|
| m/s | 0.80 ~ 30.00 m/s | 0.01 m/s | ±(2.0% reading + 50 digits) |
| km/h | 2.88 ~ 108.00 km/h | 0.01 km/h | ±(2.0% reading + 50 digits) |
| km/h | 108.0 ~ 144.0 km/h | 0.1 km/h | ±(2.0% reading + 50 digits) |
| ft/s | 2.62 ~ 131.2 ft/s | 0.01 ft/s | ±(2.0% reading + 50 digits) |
| knots | 1.6 ~ 77.70 knots | 0.01 knots | ±(2.0% reading + 50 digits) |
| mile/h | 1.8 ~ 90.00 mile/h | 0.01 mile/h | ±(2.0% reading + 5 digits) |
| ft/m | 157.5 ~ 7874 ft/m | 1 ft/m | ±(2.0% reading + 5 digits) |
10. Wind Rating Reference
The following table provides a reference for wind scales and their corresponding characteristics:
| Wind Scale | Name | Wind Speed (m/s) | Wind Speed (km/h) | Terrestrial Phenomenon |
|---|---|---|---|---|
| 0 | no wind | 0.0-0.2 | <1 | Quiet, smoke straight up |
| 1 | light air | 0.3-1.5 | 1-5 | Smoke shows wind direction |
| 2 | light wind | 1.6-3.3 | 6-11 | feel windy |
| 3 | breeze | 3.4-5.4 | 12-19 | Victory flag unfolded |
| 4 | zephyr | 5.5-7.9 | 20-28 | blow up dust |
| 5 | breeze | 8.0-10.7 | 29-38 | small tree swing |
| 6 | Gale | 10.8-13.8 | 39-49 | wire with sound |
| 7 | strong wind | 13.9-17.1 | 50-61 | Difficulty walking |
| 8 | windy | 17.2-20.7 | 62-74 | broken branches |
| 9 | Gale | 20.8-24.4 | 75-88 | small damage house |
| 10 | strong wind | 24.5-28.4 | 89-102 | uproot trees |
| 11 | storm | 28.5-32.6 | 103-117 | Major damage |
| 12 | Typhoon(hurricane) | >32.7 | >117 | destroy great |
11. User Tips
- For the most accurate wind speed readings, ensure the anemometer's fan is directly facing the airflow.
- When measuring in confined spaces like air conditioning outlets, position the device carefully to capture the full flow.
- Utilize the 180° rotating fan feature to easily adjust the measurement angle without repositioning your hand or body.
- Remember to check the battery indicator regularly to avoid interruptions during critical measurements.
12. Warranty and Support
MESTEK provides a standard warranty for its products. For specific warranty terms, technical support, or service inquiries, please refer to the official MESTEK website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.
