1. Introduction
The Smart Sensor ST8816 is a digital anemometer designed for accurate measurement of wind speed, air volume, and wind power rating. Featuring an impeller+bearing sensor for sensitive response and strong data collection, an LED night vision backlight display, and a robust double-injection, non-slip body, this instrument is suitable for a wide range of applications.
It supports multiple wind speed units and includes functions for data retention, maximum/minimum/average readings, and automatic shutdown to conserve battery life. The ST8816 is a reliable tool for professionals and enthusiasts in fields such as electric power, steel, petrochemical, energy-saving, boat competitions, rowing, and field shooting.
2. Package Contents
Upon opening the package, please verify that all items listed below are present and in good condition:
- Smart Sensor ST8816 Digital Anemometer
- Protective Carrying Case
- User Manual
- 3 x 1.5V AAA Batteries
- Calibration Certificate
3. Device Layout and Controls
Key components and controls:
- Fan Probe: Rotational sensor for wind speed and air volume measurement.
- Display Screen: LED screen for displaying measurements, units, and settings.
- H (Hold) Button: Activates data retention.
- SET Button: Used for setting parameters, such as air duct area for volume measurement.
- FUNC Button: Selects measurement functions (e.g., wind speed, air volume, wind power rating).
- UNIT Button: Changes wind speed units (m/s, Km/h, ft/s, ft/m, knots, mile/h).
- REC Button: Records data or accesses Max/Min/Average readings.
- Power Switch: Turns the device on or off.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open the compartment.
- Insert three (3) 1.5V AAA batteries, ensuring correct polarity (+/-).
- Replace the battery compartment cover securely.
4.2 Initial Power On
Press the red Power Switch button to turn on the device. The LED display will illuminate, and the device will perform a self-test before entering measurement mode.
5. Operating Instructions
5.1 Power On/Off
- To Power On: Press the red Power Switch button.
- To Power Off: Press the red Power Switch button again. The device also features an auto-shutdown function after 10 minutes of inactivity.
5.2 Wind Speed Measurement
- Ensure the device is powered on.
- Point the fan probe directly into the airflow you wish to measure.
- The wind speed will be displayed on the screen.
- Press the UNIT button to cycle through available wind speed units: m/s, Km/h, ft/s, ft/m, knots, mile/h.
5.3 Air Volume Measurement (CFM/CMM/CMS)
Before measuring air volume, you need to enter the air duct area using the SET button.
- Press the FUNC button until the display shows the air volume measurement mode (CFM, CMM, or CMS).
- Press the SET button to enter the air duct area. Follow the on-screen prompts to input the dimensions.
- Once the area is set, place the fan probe in the airflow. The air volume will be calculated and displayed.
5.4 Wind Power Rating Measurement
- Press the FUNC button until the display shows the wind power rating mode (SCALE).
- The device will display the wind power level on a scale of 0-12.
5.5 Data Retention (HOLD)
During any measurement, press the H button to freeze the current reading on the display. Press H again to release and resume live measurement.
5.6 Max/Min/Average Readings
Press the REC button to access recorded data, including maximum, minimum, and average values of measurements taken. Refer to the on-screen indicators for navigation.
5.7 LED Backlight
The device features an LED night vision backlight for clear readings in low-light conditions. This function is typically automatic or can be toggled via a dedicated button (if available, otherwise it's automatic).
6. Maintenance
6.1 Cleaning
- Wipe the device exterior with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Ensure the fan probe is free from dust and debris for accurate readings. Use a soft brush or compressed air if necessary, being careful not to damage the impeller.
6.2 Battery Replacement
When the low battery indicator appears on the display, replace all three AAA batteries promptly to ensure continued accurate operation. Follow the battery installation steps in Section 4.1.
6.3 Storage
Store the anemometer in its protective carrying case when not in use. Keep it in a dry environment with temperatures between -10°C and 50°C and relative humidity less than 80%. Remove batteries if storing for extended periods to prevent leakage.
7. Troubleshooting
- No Display/Device Not Turning On: Check if batteries are correctly installed and have sufficient charge. Replace batteries if necessary.
- Inaccurate Readings: Ensure the fan probe is clean and unobstructed. Verify that the correct measurement unit is selected. Avoid strong electromagnetic interference.
- Low Battery Indicator: Replace the AAA batteries as soon as possible.
- Display Freezes: Check if the Data Retention (HOLD) function is active. Press the 'H' button to deactivate it.
8. Specifications
| Parameter | Value |
|---|---|
| Display Screen | LED |
| Wind Speed Measurement Range | 0.40 ~ 30.00 m/s |
| Wind Speed Accuracy | ±5% |
| Sampling Time | 0.5s/times |
| Sensor Type | Impeller + Bearing |
| Wind Rating Scale | 0-12 |
| Max/Min/Average Function | Yes |
| Data Retention | Yes |
| Wind Speed Units | m/s, ft/min, knots, km/hr, mph, mile/h |
| Wind Power Units | CFM, CMM, CMS |
| Operating Environment | 0 ~ 50 °C, <80% RH, Altitude < 2000m |
| Storage Environment | -10 ~ 50 °C, <80% RH |
| Auto Shutdown Function | Yes (after 10 minutes of no operation) |
| Power Supply | 3 x 1.5V AAA Battery |
| Dimensions (Approx.) | 195mm (Height) x 70mm (Width) |
| Weight (Approx.) | 1.0 kg (packaged) |
| Certification | CE |
9. User Tips
- For the most accurate wind speed readings, ensure the anemometer's fan probe is held perpendicular to the direction of the airflow.
- When measuring air volume in ducts, ensure the duct area is accurately entered into the device for precise calculations.
- Avoid exposing the device to extreme temperatures or high humidity outside its specified operating and storage environments.
- Regularly check the battery level, especially before critical measurements, to prevent unexpected power loss.
- Keep the impeller clean and free from obstructions to maintain measurement accuracy and prolong the life of the sensor.
10. Warranty and Support
This Smart Sensor ST8816 Digital Anemometer comes with a 30-day warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer's customer service department. Contact information can typically be found on the product packaging or the retailer's website.
