1. はじめに
The AMTAST WA-60A Portable Water Activity Meter is designed for precise measurement of water activity (aw) in various substances, including food products like beef jerky, freeze-dried food, fruits, and vegetables. This device helps assess product preservation and stability by quantifying the free water content. Its portable design and integrated sensor make it a convenient tool for on-site analysis.
2.製品オーバーview
図2.1: The AMTAST WA-60A Water Activity Meter in use, displaying a water activity reading. This device measures free water activity to assess the preservation and stability of food, medicine, and other products.
図2.2: The AMTAST WA-60A Water Activity Meter with its sample plate. The kit typically includes the meter, sample plate, portable bag, and manual for accurate measurement of free water content.
主な特徴:
- ポータブルデザイン: Weighing approximately 100 grams, this meter is lightweight and suitable for on-the-go testing.
- 正確な測定: Offers a measurement range of 0-1.0aw with a resolution of ±0.01aw and an accuracy of 0.02aw.
- 統合センサー: Features a non-conductive humidity sensor and integrated readings in a single unit, simplifying water activity analysis.
- クイックテスト: Provides rapid results, typically completing measurements within 5 minutes.
- クリアなディスプレイ: Equipped with a 6-digit backlit LCD screen that simultaneously displays water activity (aw) and temperature.
- ユーザーフレンドリーな機能: Includes automatic and manual shut-off options, along with a low battery indicator.
図2.3: 詳細 view of the meter's backlit LCD screen, showing both the water activity (aw) and temperature values for clear readings.
図2.4: Image showing the battery compartment for 2x1.5V AAA batteries and the non-conductive humidity sensor. The device also features automatic shutdown, manual shutdown, and alarm indication.
3. 仕様
図3.1: The AMTAST WA-60A Water Activity Meter shown alongside its key specifications.
| パラメータ | 価値 |
|---|---|
| モデル番号 | WA-60A |
| 測定範囲 | 0.00 ~ 1.00 aw |
| 解決 | ±0.01aw |
| 正確さ | ±0.02aw |
| Temperature Operation Conditions | 0〜50℃ |
| Humidity Operation Conditions | 相対湿度95%未満 |
| アイテム重量 | 100グラム（3.53オンス） |
| 電源 | 2 x 1.5V AAA Size (UM-4) Battery (not included) |
| 材料 | アブソリュート |
| 寸法 | Approximately 13.5 cm (5.3 inches) height, 7 cm (2.8 inches) width |
4. セットアップ
Before first use, ensure the device is properly set up.
- バッテリーの取り付け: Open the battery compartment on the back of the meter. Insert two 1.5V AAA batteries, ensuring correct polarity. Close the compartment securely.
- Sampル・ホルダー: The meter comes with a sample holder featuring a strong magnetic connection. Ensure the sample holder is clean and dry before use.
- Calibration (Highly Recommended): For accurate and reliable results, especially for food safety applications, it is highly recommended to calibrate the meter using certified water activity standards. This should be done in the range relevant to your testing.
ビデオ4.1： This video demonstrates the setup and basic operation of the AMTAST WA-60A Water Activity Meter, including how to prepare samples for measurement.
5. 操作
Follow these steps for accurate water activity measurement:
- Sを準備するamp上： あなたのを配置しますample into a clean, dry sample cup. Ensure the sample fills the cup adequately without overflowing.
- 場所Samp上： を配置しますample cup onto the base of the meter. The magnetic sample holder will secure it in place.
- 平衡化: 重要なステップ: After placing the sample and closing the meter, allow sufficient time for the sample to equilibrate with the sensor. This process can take several hours, or even overnight, depending on the sample type and environmental conditions. Do not turn on the meter immediately.
- 電源オン: 一度ample has equilibrated, turn on the meter while it is still closed on the sampル。
- 測定値の読み取り: The LCD screen will display the water activity (aw) and temperature. Allow the reading to stabilize before recording the final value.
- 電源を切る： The device features automatic and manual shut-off options. To manually turn off, press and hold the power button.
ビデオ5.1： このビデオでは、view of the AMTAST Smart Water Activity Meter, demonstrating its use in a laboratory setting.
ビデオ5.2： This video demonstrates the process of using the Water Activity Meter for monitoring food water activity (AW).
図5.1: The meter is designed for quick and efficient testing, providing accurate readings for water activity measurements.
図5.2: The AMTAST WA-60A is widely used for testing water activity in various food products, including dried fruits, beef jerky, cookies, and sausages.
6. メンテナンス
- クリーニング： sを維持するample holder and sensor area clean and free from debris. Use a soft, dry cloth to wipe the device. Do not use abrasive cleaners or immerse the device in water.
- ストレージ： Store the meter in its protective case in a cool, dry place when not in use. Remove batteries if storing for extended periods to prevent leakage.
- 較正： Regular calibration with known standards is essential to maintain accuracy. Refer to Section 4 for calibration recommendations.
7。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| 不正確または不安定な測定値 | Insufficient equilibration time; lack of calibration; dirty sensor. | sを確認しますample equilibrates for several hours before measurement. Calibrate the device regularly with appropriate standards. Clean the sensor and sampルホルダー。 |
| デバイスの電源が入らない | 電池が切れているか、正しく取り付けられていない。 | Check battery polarity. Replace batteries with fresh 1.5V AAA batteries. |
| ディスプレイが暗い、または判読できない | 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。 |
8. 安全情報
- ご自身でデバイスの分解や修理を試みないでください。修理が必要な場合は、資格のある担当者にご連絡ください。
- デバイスは、極端な温度、湿度、直射日光を避けて保管してください。
- 物理的な損傷を避けるため、デバイスを慎重に取り扱ってください。
- 地域の規制に従ってバッテリーを廃棄してください。
9. 保証とサポート
For warranty information, technical support, or service inquiries, please contact AMTAST customer service. Refer to the product packaging or the official AMTAST web連絡先の詳細についてはサイト。
AMTAST Official Store: Visit the AMTAST Store on Amazon