1. Introduction
The TASI TA641B is a high-precision handheld anemometer designed for measuring wind speed, air temperature, and ambient humidity. It features an LCD display with backlight, data hold function, and automatic power-off for energy saving. This manual provides detailed instructions for the safe and effective use of your TA641B anemometer.
2. Safety Information
Please read and understand all safety warnings and operating instructions before using this instrument. Failure to do so may result in injury or damage to the device.
2.1 General Safety
- Do not operate the device in explosive atmospheres or in the presence of flammable gases or fumes.
- Keep the device away from water and moisture to prevent electric shock or damage.
- Do not attempt to disassemble or modify the instrument. Repairs should only be performed by qualified personnel.
- Avoid dropping the device or subjecting it to strong impacts.
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
2.2 Battery Safety
- The device requires 3x 1.5V AAA (R03/LR03) batteries. Ensure correct polarity when installing.
- Do not mix old and new batteries, or different types of batteries.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
- Dispose of used batteries according to local regulations.
3. Product Overview
The TASI TA641B anemometer is equipped with an 8-fan blade design for low friction and high precision, ensuring a sensitive response to wind. The high-definition LCD screen provides clear readings.
3.1 Components and Controls
Key components and controls include:
- Fan Blade: Measures air velocity.
- LCD Screen: Displays measurements and status indicators.
- Power Button: Turns the device on/off. Long press for backlight.
- HOLD/UNIT Button: Toggles data hold and switches measurement units.
- MAX/MIN Button: Displays maximum, minimum, and average values.
- Hi/Low Buttons: Used for setting upper and lower limits (specific functionality may vary by model/firmware).
- Battery Compartment: Located on the rear, for AAA batteries.
3.2 LCD Display Indicators
The LCD screen shows various indicators:
- APO: Auto Power Off indicator.
- Battery Level: Shows remaining battery power.
- Hi/Low: Upper/Lower limit alarm indicators.
- AUTO/HOLD/MAX/AVG/MIN: Measurement mode indicators.
- Air Velocity: Main reading for wind speed.
- Bft: Beaufort scale indicator.
- Humidity: Ambient humidity reading (for TA641B).
- Temperature: Air temperature reading.
- Units: m/s, ft/m, km/h, mile/h, knots for air velocity; °C, °F for temperature; %RH for humidity.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the anemometer.
- Slide or unclip the cover to open it.
- Insert 3x 1.5V AAA (R03/LR03) batteries, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover securely.
5. Operating Instructions
5.1 Power On/Off and Backlight
- To turn on the device, press the Power Button.
- To turn off the device, press and hold the Power Button until the display turns off.
- The device features an automatic power-off function after 10 minutes of inactivity to save battery. This can typically be canceled manually by pressing a button before it shuts off, or by a specific setting (refer to advanced settings if available).
- To activate the backlight, long press the Power Button for more than 2 seconds while the device is on.
5.2 Taking Measurements
Hold the anemometer so that the fan blade faces the direction of the wind or airflow you wish to measure. Ensure no obstructions block the fan.
5.3 Unit Switching
- Press the HOLD/UNIT Button briefly to cycle through different air velocity units (m/s, ft/m, km/h, mile/h, knots).
- Use the °F/°C Buttons to switch between Fahrenheit and Celsius for temperature readings.
5.4 Data Hold Function
- During measurement, press the HOLD/UNIT Button to freeze the current reading on the display. The "HOLD" indicator will appear.
- Press the HOLD/UNIT Button again to release the hold and resume real-time measurement.
5.5 MAX/MIN/AVG Measurement
- Press the MAX/MIN Button to cycle through maximum (MAX), minimum (MIN), and average (AVG) readings recorded since the device was powered on or the function was reset.
- To reset the MAX/MIN/AVG values, typically you would power off and on the device, or consult the full manual for a specific reset procedure if available.
6. Specifications
The following table outlines the technical parameters for the TASI TA641B anemometer:
| Parameter | TA641B Specification |
|---|---|
| Model | TA641B |
| Air Velocity Range | 0.06 ~ 30.0 m/s |
| Air Velocity Resolution | 0.01/0.1 |
| Air Velocity Accuracy | ±0.2+(±2% reading) |
| Ambient Temperature Range | 0 ~ 45 °C (32 ~ 113 °F) |
| Ambient Temperature Resolution | 0.1 °C/°F |
| Ambient Temperature Accuracy | ±2 °C |
| Ambient Humidity Range | 0 ~ 99% RH |
| Ambient Humidity Accuracy | ±8% RH |
| Display | 4 digits, max 9999 |
| Sensor | Infrared laser tube cutting method |
| Sampling Rate | 2 times/s |
| Auto Power Off | 10 minutes (can be canceled manually) |
| Working Environment | -10 ~ 50 °C, Max 80% RH, indoor altitude < 2000m |
| Storage Environment | -10 ~ 50 °C, Max 70% RH (battery removed) |
| Product Size | 152 x 55 x 33 mm |
| Screen Size | 37 x 41 mm / 1.4 x 1.6 in |
| Weight | Approx. 135g (battery not included) |
| Power | 3x 1.5V AAA (R03/LR03) |
7. Maintenance
7.1 Cleaning
- Wipe the device casing with a soft, damp cloth. Do not use abrasive materials or chemical solvents.
- Ensure the fan blades are free from dust and debris for accurate readings. Use a soft brush or compressed air if necessary, being careful not to damage the blades.
7.2 Storage
- When not in use for extended periods, remove the batteries to prevent leakage and damage to the device.
- Store the anemometer in a cool, dry place, away from direct sunlight and extreme temperatures. The recommended storage environment is -10 ~ 50 °C with Max 70% RH.
- Utilize the provided protective cover and cloth bag for storage to prevent scratches and impacts.
8. Troubleshooting
If you encounter issues with your TASI TA641B anemometer, please refer to the following common problems and solutions:
- Device does not power on:
- Check if the batteries are installed correctly with the right polarity.
- Replace old or depleted batteries with new ones.
- Inaccurate readings:
- Ensure the fan blades are clean and unobstructed.
- Verify that the device is held correctly in the airflow.
- Check for stable environmental conditions during measurement.
- Display is dim or blank:
- Check battery level and replace if low.
- Ensure the backlight is activated if operating in low light conditions.
- Auto power-off too soon:
- The device has a 10-minute auto power-off feature. If you need continuous measurement, ensure you interact with the device periodically or check if there's an option to disable APO (refer to the full manual if available).
For persistent issues, please contact customer support.
9. User Tips
- For the most accurate wind speed readings, hold the anemometer at arm's length, ensuring your body does not create a wind shadow or turbulence around the sensor.
- When measuring in fluctuating wind conditions, utilize the MAX/MIN/AVG functions to get a better understanding of the wind profile over a period.
- Always keep the protective cover on the fan when not in use to prevent damage to the delicate blades.
- Remember to remove batteries for long-term storage to prevent corrosion.
10. Warranty and Support
TASI products are manufactured to high-quality standards. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or contact the seller/manufacturer directly. Keep your purchase receipt as proof of purchase.