Apera Instruments PH820 Benchtop pH Meter Kit

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The Apera Instruments PH820 Benchtop pH Meter Kit is designed for reliable and accurate pH measurements in laboratory settings. It features advanced functionalities including intelligent calibration, data management, and a durable, water-resistant structure. This manual provides detailed instructions for proper use and care of your PH820 meter.

Figure 1: Apera Instruments PH820 Benchtop pH Meter Kit, showing the main unit, electrode, temperature probe, and electrode arm.

Key features of the PH820 include:

• ความแม่นยำสูง: Achieves ±0.002 pH±1 digit precision.
• Premium Electrode: Equipped with the Swiss LabSen 211 Glass-body pH Electrode for stable and accurate measurements.
• Intelligent Calibration: Supports 1 to 5 points auto-calibration with calibration guide and reminder functions.
• การวินิจฉัยตนเอง: Assists in identifying and resolving common calibration issues and monitors electrode health.
• การจัดการข้อมูล: GLP-compliant data storage for up to 500 groups with USB data output and PC software support.
• การออกแบบที่ทนทาน: IP54 water-resistant construction.

การตั้งค่า

การแกะกล่องและการตรวจสอบส่วนประกอบ

Carefully unpack all components from the kit. Verify that the following items are present:

• PH820 pH Meter Unit
• หัววัดค่า pH LabSen 211
• หัววัดอุณหภูมิ
• Flexible Electrode Arm and Holder
• สาย USB
• PC-Link Software Flash Drive
• Power Adaptor (Input: 120V AC 60Hz; Output: 9V 300mA)
• Calibration Solutions (4.00 pH, 7.00 pH, 10.01 pH)

การเชื่อมต่อส่วนประกอบ

Connect the electrode, temperature probe, and power adapter to the corresponding ports on the back of the PH820 meter unit. Ensure all connections are secure.

รูปที่ 2: ด้านหลัง view of the PH820 meter, highlighting the REF, pH/mV, TEMP, RS232, and DC 9V input ports.

1. การเชื่อมต่ออิเล็กโทรด: Plug the LabSen 211 pH Electrode into the port labeled "pH/mV".
2. การเชื่อมต่อหัววัดอุณหภูมิ: Insert the temperature probe into the port labeled "TEMP".
3. การเชื่อมต่อไฟฟ้า: Connect the power adapter to the "DC 9V" port and then to a power outlet.
4. Electrode Arm Assembly: Attach the flexible electrode arm and holder to the side of the meter unit for convenient electrode placement during measurements.

คำแนะนำการใช้งาน

Basic pH Measurement

1. เปิดมิเตอร์โดยการกดปุ่มเปิด/ปิด
2. ล้างอิเล็กโทรดด้วยน้ำกลั่นแล้วซับให้แห้งเบาๆ
3. Immerse the electrode and temperature probe into the sample solution. Ensure the electrode tip is fully submerged.
4. Wait for the reading on the large LCD to stabilize. The meter displays pH and temperature simultaneously.
5. Record the stable reading.

การสอบเทียบ pH

The PH820 supports 1 to 5 points automatic calibration. Regular calibration ensures measurement accuracy.

1. Prepare the standard calibration solutions (4.00 pH, 7.00 pH, 10.01 pH are included).
2. กดปุ่ม แคล กดปุ่มเพื่อเข้าสู่โหมดการปรับเทียบ
3. Rinse the electrode and immerse it into the first calibration solution (e.g., 7.00 pH).
4. The meter will automatically recognize the solution and begin calibration. Wait for the stability icon to appear.
5. Once stable, the meter will prompt for the next calibration point. Repeat the rinsing and immersion process for subsequent solutions.
6. The self-diagnosis function will provide feedback on the calibration process and electrode condition, including slope data.
7. Exit calibration mode once all desired points are completed.

การจัดการข้อมูล

The PH820 allows for GLP data management, storing up to 500 groups of data. Data can be output via USB to a PC using the provided PC-Link software (Windows-based system only). Auto-timing data logging can also be configured.

ORP Measurement (Optional)

The PH820 can measure Oxidation-Reduction Potential (ORP) when an ORP electrode (e.g., 301Pt-C, sold separately) is connected to the pH/mV port. Refer to the ORP electrode's specific instructions for calibration and measurement procedures.

การซ่อมบำรุง

การดูแลอิเล็กโทรด

Proper care of the LabSen 211 pH Electrode is crucial for maintaining accuracy and extending its lifespan.

รูปที่ 3: ระยะใกล้ view of the LabSen 211 pH Electrode, showing its glass body and sensor tip.

• การล้าง: Always rinse the electrode with distilled or deionized water before and after each measurement.
• พื้นที่จัดเก็บ: Store the electrode in its protective cap filled with a suitable electrode storage solution (or 3M KCl solution). Never store the electrode dry or in distilled water.
• การทำความสะอาด: If the electrode becomes contaminated or readings are sluggish, clean it according to the electrode's specific cleaning instructions.
• Bubble-free Tip: The LabSen 211 features an impact-resistant and bubble-free sensor tip. Ensure no air bubbles are trapped around the sensor during measurement.

การดูแลมิเตอร์

The PH820 meter unit is IP54 water-resistant, meaning it is protected from dust and splashing water. However, it should not be submerged. Keep the meter clean and dry. Use a soft, damp cloth to wipe the surface. Avoid using abrasive cleaners or solvents.

การแก้ไขปัญหา

The PH820 features a self-diagnosis function that can assist in identifying and fixing common problems, particularly during calibration. Refer to the meter's display for diagnostic messages.

For persistent issues not resolved by the above, please contact Apera Instruments customer support.

ข้อมูลจำเพาะ

การรับประกันและการสนับสนุน

Apera Instruments products are manufactured under an ISO 9001:2015 certified quality system, ensuring high standards of production. For specific warranty information and technical support, please refer to the warranty card included with your product or visit the official Apera Instruments website. You may also contact their customer service directly for assistance with product operation, troubleshooting, or parts replacement.