AMTAST WA-60A Portable Water Activity Meter Instruction Manual

1. ບົດແນະນຳ

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. ຜະລິດຕະພັນເກີນview

ຮູບທີ 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.

ຮູບທີ 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.

ຄຸນ​ນະ​ສົມ​ບັດ​ທີ່​ສໍາ​ຄັນ​:

• ການອອກແບບແບບພົກພາ: Weighing approximately 100 grams, this meter is lightweight and suitable for on-the-go testing.
• ການວັດແທກທີ່ຖືກຕ້ອງ: Offers a measurement range of 0-1.0aw with a resolution of ±0.01aw and an accuracy of 0.02aw.
• ເຊັນເຊີປະສົມປະສານ: Features a non-conductive humidity sensor and integrated readings in a single unit, simplifying water activity analysis.
• ການທົດສອບດ່ວນ: Provides rapid results, typically completing measurements within 5 minutes.
• ຈໍສະແດງຜົນທີ່ຈະແຈ້ງ: Equipped with a 6-digit backlit LCD screen that simultaneously displays water activity (aw) and temperature.
• ຟັງຊັນທີ່ງ່າຍຕໍ່ການໃຊ້: Includes automatic and manual shut-off options, along with a low battery indicator.

ຮູບທີ 2.3: ລະອຽດ view of the meter's backlit LCD screen, showing both the water activity (aw) and temperature values for clear readings.

ຮູບທີ 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. ຂໍ້ມູນຈໍາເພາະ

ຮູບທີ 3.1: The AMTAST WA-60A Water Activity Meter shown alongside its key specifications.

ຂໍ້ມູນຈໍາເພາະ

ພາລາມິເຕີ	ມູນຄ່າ
ໝາຍເລກຕົວແບບ	WA-60A
ໄລຍະການວັດແທກ	0.00 ~ 1.00 aw
ຄວາມລະອຽດ	±0.01 aw
ຄວາມຖືກຕ້ອງ	±0.02 aw
Temperature Operation Conditions	0-50°C
Humidity Operation Conditions	<95% RH
ນ້ໍາຫນັກລາຍການ	100 ກຣາມ (3.53 ອອນສ໌)
ການສະຫນອງພະລັງງານ	2 x 1.5V AAA Size (UM-4) Battery (not included)
ວັດສະດຸ	ABS
ຂະໜາດ	Approximately 13.5 cm (5.3 inches) height, 7 cm (2.8 inches) width

4. ຕັ້ງຄ່າ

Before first use, ensure the device is properly set up.

1. ການ​ຕິດ​ຕັ້ງ​ຫມໍ້​ໄຟ​: Open the battery compartment on the back of the meter. Insert two 1.5V AAA batteries, ensuring correct polarity. Close the compartment securely.
2. Sample Holder: The meter comes with a sample holder featuring a strong magnetic connection. Ensure the sample holder is clean and dry before use.
3. 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.

5. ການດໍາເນີນງານ

Follow these steps for accurate water activity measurement:

1. ກະກຽມ Sample: ວາງ s ຂອງທ່ານample into a clean, dry sample cup. Ensure the sample fills the cup adequately without overflowing.
2. ສະຖານທີ່ Sample: ຕໍາ​ແຫນ່ງ sample cup onto the base of the meter. The magnetic sample holder will secure it in place.
3. ຄວາມສົມດຸນ: ຂັ້ນຕອນສຳຄັນ: 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.
4. ເປີດ: ເມື່ອ sample has equilibrated, turn on the meter while it is still closed on the sampເລ.
5. ອ່ານການວັດແທກ: The LCD screen will display the water activity (aw) and temperature. Allow the reading to stabilize before recording the final value.
6. ປິດພະລັງງານ: The device features automatic and manual shut-off options. To manually turn off, press and hold the power button.

ຮູບທີ 5.1: The meter is designed for quick and efficient testing, providing accurate readings for water activity measurements.

ຮູບທີ 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. ບໍາລຸງຮັກສາ

• ທໍາຄວາມສະອາດ: ຮັກສາ sample 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.
• ການເກັບຮັກສາ: 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.
• ການປັບທຽບ: Regular calibration with known standards is essential to maintain accuracy. Refer to Section 4 for calibration recommendations.

7. ການແກ້ໄຂບັນຫາ

8. ຂໍ້ມູນຄວາມປອດໄພ

• ຢ່າພະຍາຍາມຖອດປະກອບ ຫຼືສ້ອມແປງອຸປະກອນດ້ວຍຕົນເອງ. ຕິດຕໍ່ພະນັກງານທີ່ມີຄຸນວຸດທິສໍາລັບການບໍລິການ.
• ຮັກສາອຸປະກອນໃຫ້ຫ່າງຈາກອຸນຫະພູມ, ຄວາມຊຸ່ມຊື່ນ, ແລະແສງແດດໂດຍກົງ.
• ຈັດການອຸປະກອນດ້ວຍຄວາມລະມັດລະວັງເພື່ອຫຼີກເວັ້ນການເສຍຫາຍທາງດ້ານຮ່າງກາຍ.
• ຖິ້ມແບດເຕີລີ່ຕາມກົດລະບຽບທ້ອງຖິ່ນ.

9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

For warranty information, technical support, or service inquiries, please contact AMTAST customer service. Refer to the product packaging or the official AMTAST webເວັບໄຊທ for ສໍາລັບລາຍລະອຽດການຕິດຕໍ່.

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