1. はじめにview
The BTMETER BT-866A Pro is a versatile handheld digital anemometer designed for precise measurement of various environmental parameters. This 5-in-1 device accurately measures wind speed, wind temperature, wind flow (CFM), relative humidity (%RH), and dew point. It is an essential tool for HVAC system balancing, environmental monitoring, outdoor activities, and industrial applications. The device features a large backlit display, data hold function, Max/Min measurement, and USB connectivity for PC data logging and analysis.
2. パッケージ内容
開梱したら、以下にリストされているすべてのアイテムが揃っていて良好な状態であることを確認してください。
- 1 x BTMETER BT-866A Pro Digital Anemometer
- 2V AAA電池1.5本
- USBケーブル1本
- 1 x PC Software CD
- ハンドストラップ x 1
- 1×保護ポーチ
- ユーザーマニュアル x 1
Figure 2.1: Contents included in the BTMETER BT-866A Pro Anemometer package.
3. 製品の特徴と構成
The BT-866A Pro Anemometer integrates multiple measurement capabilities and user-friendly features:
- 5 in 1測定: Wind Speed, Wind Temperature, Wind Flow (CFM), Relative Humidity, and Dew Point.
- 高精度: Measures wind speed from 0.3 to 40 m/s with an accuracy of +/- 2.0% + 50.
- Sensitive Vanes: Equipped with 8 sensitive vanes for accurate low wind speed detection.
- Dual Wind Chill Sensor: For precise temperature readings.
- 大型バックライト付きLCD: 1.5-inch display for clear readings in various lighting conditions.
- データ保持： ディスプレイ上の現在の読み取り値を固定します。
- Max/Min Measurement: 測定セッション中の最大値と最小値を記録します。
- 複数のユニット: Supports various units for wind speed (m/s, km/h, ft/min, knots, mph, fpm), temperature (°C, °F), and airflow (CFM, CMM).
- USB接続: Allows connection to a PC for data logging, analysis, and monitoring.
- 自動電源オフ： 10 分間操作がないと自動的にシャットダウンし、バッテリー寿命を節約します。
- 低バッテリーインジケーター: バッテリー交換が必要な場合に警告します。
- 三脚マウント： Features a metal screw hole at the bottom for tripod attachment (tripod not included) for hands-free operation.
図3.1：以上view of the BTMETER BT-866A Pro Anemometer and its primary functions.
Figure 3.2: Key buttons and their functions on the BT-866A Pro Anemometer.
4. セットアップ
4.1 バッテリーの取り付け
- デバイスの背面にある電池ボックスのカバーを見つけます。
- カバーをスライドさせるか、ねじを外して開きます。
- 極性 (+/-) が正しいことを確認して、1.5V AAA 電池 2 本を挿入します。
- 電池収納部のカバーをしっかりと取り付けてください。
4.2 電源のオン/オフ
を押し続けます オン/オフ button (usually the central red button) for approximately 3 seconds to turn the device on or off.
4.3 Initial Unit Selection
After powering on, you may select your preferred units for measurement. Refer to Section 5.2 for detailed instructions on unit selection.
4.4 三脚取り付け（オプション）
For stable, hands-free measurements, the BT-866A Pro can be mounted on a standard tripod. Locate the metal screw hole at the bottom of the device and attach it to a compatible tripod. Ensure the device is securely fastened before use.
Figure 4.1: The BT-866A Pro Anemometer with optional tripod mounting.
5. 操作手順
5.1 基本測定
Once powered on, the device will display real-time readings. Position the anemometer so that the wind flows directly through the 8-leaf wind wheel for accurate measurements. The display will show wind speed, temperature, and other selected parameters.
5.2ユニットの選択
を押す ユニット button to cycle through available units for wind speed (m/s, km/h, ft/min, knots, mph, fpm) and temperature (°C, °F). For airflow (CFM), the unit is typically displayed directly.
5.3データ保持機能
を押す ホールド/モード button briefly to freeze the current reading on the display. Press it again to release the hold and resume real-time measurements.
5.4 最大/最小測定
を押す 最大/最小 ボタンを押す view the maximum or minimum recorded values during the current measurement session. Press repeatedly to cycle between MAX, MIN, and current readings.
5.5 Humidity Mode (Dew Point & Wet Bulb)
長押し ホールド/モード button to switch to Humidity Mode, which displays Dew Point and Wet Bulb temperatures. Long press again to exit this mode.
5.6 FUNCボタン
長押し FUNC button for 3 seconds to enable or disable the "Auto Power Off" feature. A short press of the FUNC button allows you to switch between different measurement modes (Wind Speed, Wind Flow, and input dimensions for CFM calculation).
5.7 CFM Measurement
The anemometer displays CFM values directly. For accurate CFM readings, ensure the device is positioned correctly within the airflow. If manual input for duct dimensions is required, use the FUNC button to access dimension settings.
Figure 5.1: CFM measurement display and measurement ranges.
6. Data Logging (USB PC Sync)
The BT-866A Pro supports data logging to a PC for detailed analysis and monitoring. This feature is particularly useful for long-term observation or when detailed reports are required.
- Install the provided PC software from the included CD onto your computer.
- Connect the anemometer to your PC using the supplied USB cable.
- Launch the PC software. The software will allow you to monitor and record wind speed, wind flow, CFM, humidity, and temperature data in real-time.
- The software can generate graphs and reports for comprehensive data analysis.
Figure 6.1: USB connection to PC for data logging and analysis.
7. Measurement Tips for Temperature and Relative Humidity
For accurate temperature and relative humidity (%RH) readings, consider the following:
- The temperature sensors are located within the left and right holes of the device.
- To ensure accurate readings, especially for temperature, shade the sensors from direct sunlight.
- Ensure there is adequate airflow across the sensors. Without sufficient airflow, temperature and %RH readings may change slowly or inaccurately reflect the ambient conditions. Allow time for the sensors to stabilize in the measurement environment.
8. 仕様
| パラメータ | 価値 |
|---|---|
| モデル番号 | BT-866A |
| 風速範囲 | 0.3〜40 m / s |
| 風速精度 | +/- 2.0% + 50 |
| 風速単位 | m/s, km/h, ft/min, knots, mph, fpm |
| 温度範囲 | -22°C〜140°C（-30°F〜60°F） |
| 温度単位 | °C、°F |
| Air Flow (CFM) Range | 0 ~ 999900 ft³/min |
| 相対湿度範囲 | 相対湿度0%～100% |
| 露点測定 | はい |
| 画面 | 1.5インチバックライト付きLCD |
| 電源 | 2V AAA電池1.5本 |
| 自動電源オフ | After 10 minutes of inactivity (configurable) |
| 接続性 | USB for PC data logging |
| 材料 | アクリロニトリルブタジエンスチレン（ABS） |
| 寸法（長さ×幅×高さ） | 8.64 x 3.81 x 16.51 cm（3.4 x 1.5 x 6.5インチ） |
| 重さ | 200グラム |
9. メンテナンス
Proper maintenance ensures the longevity and accuracy of your BTMETER BT-866A Pro Anemometer.
- クリーニング： Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents. Keep the wind wheel and sensor areas free from dust and debris.
- ストレージ： 長期間使用しない場合は、液漏れを防ぐため電池を取り外してください。デバイスは保護ポーチに入れて、直射日光や極端な温度を避け、涼しく乾燥した場所に保管してください。
- バッテリー交換: Replace batteries promptly when the low battery indicator appears to ensure continuous accurate operation.
- センサーのケア: Avoid touching the wind wheel vanes or internal sensors directly. Handle the device with care to prevent damage to the sensitive components.
10。 トラブルシューティング
If you encounter issues with your BT-866A Pro Anemometer, refer to the following common problems and solutions:
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| デバイスの電源が入らない | 電池残量が少ない、または電池が切れている、または電池が正しく取り付けられていない。 | 正しい極性を確認して、新しい電池と交換してください。 |
| 不正確な風速の計測 | Obstruction of wind wheel; incorrect positioning; damaged vanes. | Ensure wind wheel is clear and rotates freely. Position the device directly into the airflow. Check for physical damage. |
| 温度/湿度の測定値が不正確 | Sensors exposed to direct sunlight; insufficient airflow over sensors; sensors obstructed. | Shade the device from direct sunlight. Ensure adequate airflow around the sensor holes. Clear any obstructions. Allow time for readings to stabilize. |
| PC software not detecting device | USB cable not connected properly; software not installed correctly; driver issues. | Ensure USB cable is securely connected to both device and PC. Reinstall PC software and drivers if necessary. Try a different USB port. |
| ディスプレイが暗くなったりちらついたりしている | バッテリー残量が少なくなりました。 | 電池を交換してください。 |
11. 保証とサポート
BTMETER products are manufactured to high-quality standards. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty details, please refer to the warranty card included with your product or contact BTMETER customer support.
If you require technical assistance, have questions about product operation, or need to report a defect, please contact BTMETER customer support through the official website or the contact information provided in your product packaging. Please have your model number (BT-866A Pro) and purchase details ready when contacting support.