1. හැඳින්වීම සහ නිෂ්පාදනය අවසන්view
The Apera Instruments EC820 Benchtop Conductivity Meter is a high-precision instrument designed for accurate measurement of Conductivity (EC), Total Dissolved Solids (TDS), Salinity, Resistivity, and temperature. This meter is equipped with advanced features for reliable and stable readings across a wide range of applications.
This manual provides detailed instructions for the proper setup, operation, maintenance, and troubleshooting of your EC820 meter to ensure optimal performance and longevity.
Figure 1: Apera Instruments EC820 Benchtop Conductivity Meter Kit. The image shows the main meter unit, a flexible electrode arm and holder, and the conductivity electrode submerged in a beaker of liquid.
2. ආරක්ෂිත පූර්වාරක්ෂාවන්
- Always handle the meter and electrodes with care to prevent damage.
- Do not immerse the main meter unit in water. The unit is IP54 water-resistant, but not submersible.
- සපයන ලද බල ඇඩැප්ටරය පමණක් භාවිතා කරන්න.
- Keep calibration solutions and samples away from children and pets. Follow safety data sheets (SDS) for handling specific chemicals.
- Ensure the meter is placed on a stable, level surface during operation.
- පිරිසිදු කිරීමට හෝ නඩත්තු කිරීමට පෙර විදුලිය විසන්ධි කරන්න.
3. පැකේජ අන්තර්ගතය
පහත ලැයිස්තුගත කර ඇති සියලුම අයිතම ඔබේ පැකේජයේ ඇති බව තහවුරු කරගන්න:
- EC820 නිරවද්ය බෙන්ච්ටොප් සන්නායකතා මීටරය
- 2401T-F Platinum Glass-body Conductivity Electrode
- Flexible Electrode Arm and Holder
- USB කේබලය
- PC-Link Software Flash Drive
- Power Adaptor (Input: 120V AC 60Hz; Output: 9V 300mA)
- Calibration Solutions:
- 84 µS/cm (1 vial)
- 1413 µS/cm (1 vial)
- 12.88 mS/cm (1 vial)
Figure 2: The 2401T-F Platinum Glass-body Conductivity Electrode, showing its connection cables.
4. පිහිටුවීම
- Unpack the Meter: ඇසුරුම්කරණයෙන් සියලුම සංරචක ප්රවේශමෙන් ඉවත් කරන්න.
- Assemble Electrode Arm: Attach the flexible electrode arm to the meter unit. Ensure it is securely fastened.
- Connect Electrode: Plug the 2401T-F Conductivity Electrode into the designated "COND" port on the back of the meter. Ensure the connection is firm.
Figure 3: Rear panel of the EC820 meter, highlighting the "COND" and "TEMP" ports, along with RS232 and DC 9V power input.
- සම්බන්ධක බලය: Plug the power adapter into the "DC 9V" port on the back of the meter, then connect it to a standard 120V AC 60Hz power outlet.
- මූලික බලය සක්රිය කිරීම: Press the power button to turn on the meter. The LCD display should illuminate.
5. මෙහෙයුම් උපදෙස්
5.1 ක්රමාංකනය
The EC820 meter features 1 to 4 points auto-calibration. Regular calibration ensures accurate measurements.
- Prepare Solutions: Use the provided 84 µS/cm, 1413 µS/cm, and 12.88 mS/cm calibration solutions. Ensure solutions are at room temperature.
- Rinse Electrode: Rinse the conductivity electrode thoroughly with distilled or deionized water before and after each measurement or calibration. Gently blot dry with a lint-free tissue.
- ක්රමාංකන මාදිලිය ඇතුළු කරන්න: මීටරය ක්රියාත්මක වන විට, ඔබන්න CAL button. The display will show "CAL" and prompt for the first calibration point.
- First Point Calibration: Immerse the electrode into the 1413 µS/cm standard solution. Wait for the reading to stabilize (indicated by a stable icon on the display). The meter will automatically recognize the solution. Press ඇතුල් කරන්න තහවුරු කිරීමට.
- Subsequent Points (Optional): For higher accuracy, proceed with 84 µS/cm and 12.88 mS/cm solutions following the same procedure. The meter will guide you through the process.
- Exit Calibration: After completing desired calibration points, press the MEAS button to return to measurement mode.
සටහන: The meter has a self-diagnosis function to help identify and fix common calibration problems. Refer to the on-screen prompts.
5.2. මැනීම
- Rinse Electrode: ආස්රැත ජලය සමග ඉලෙක්ට්රෝඩය සේදීම.
- Immerse Electrode: Immerse the electrode into the sample solution, ensuring the sensor is fully submerged.
- Wait for Stability: Allow the reading to stabilize. The stable reading icon will appear on the LCD.
- වාර්තා කියවීම: Read the Conductivity (EC), TDS, Salinity, or Resistivity value displayed on the large LCD. Temperature will also be displayed simultaneously.
- ඒකක වෙනස් කරන්න: ඔබන්න ඒකකය button to cycle through different measurement units (e.g., µS/cm, mS/cm, ppm, ppt).
- දත්ත ගබඩාව: The meter supports GLP data management with 500 groups of data storage. Use the M+ / R-M buttons to store and recall data.
- දත්ත අපනයනය: Connect the meter to a PC via the USB cable and use the provided PC-Link software (Windows-based system only) to export data.
6. නඩත්තු කිරීම
- ඉලෙක්ට්රෝඩ පිරිසිදු කිරීම:
- Regularly rinse the electrode with distilled or deionized water.
- For stubborn deposits, refer to the electrode's specific cleaning instructions. Generally, a mild detergent solution or a specific electrode cleaning solution can be used, followed by thorough rinsing.
- Do not scratch or damage the platinum black sensor.
- ඉලෙක්ට්රෝඩ ආචයනය:
- Always store the conductivity electrode in its protective cap filled with a proper electrode storage solution (e.g., 3M KCl solution or Apera Instruments storage solution). Never store dry.
- Meter Cleaning: Wipe the main meter unit with a clean, damp රෙදි. උල්ෙල්ඛ පිරිසිදු කරන්නන් හෝ ද්රාවණ භාවිතා නොකරන්න.
- මෘදුකාංග යාවත්කාලීන: Check the Apera Instruments website periodically for any software updates for the PC-Link software.
රූපය 4: සමීප රූපය view of the platinum glass-body conductivity electrode tip, which requires careful handling and proper storage.
7. දෝශ නිරාකරණය
| ගැටලුව | විය හැකි හේතුව | විසඳුම |
|---|---|---|
| මීටරය ක්රියාත්මක නොවේ | බල සැපයුමක් නැත; දෝෂ සහිත ඇඩැප්ටරය; ලිහිල් සම්බන්ධතාවය. | Check power adapter connection and outlet. Ensure adapter is functional. |
| අස්ථායී කියවීම් | Dirty electrode; air bubbles on sensor; incorrect calibration; temperature fluctuations. | Clean electrode; gently tap electrode to remove bubbles; recalibrate meter; ensure sample temperature is stable. |
| ක්රමාංකන දෝෂය | Contaminated calibration solution; incorrect solution used; damaged electrode. | Use fresh calibration solutions; ensure correct solution for calibration point; inspect electrode for damage. |
| No data transfer to PC | Incorrect USB connection; software not installed or running; driver issues. | Verify USB cable connection; ensure PC-Link software is installed and open; check device manager for driver issues. |
8. පිරිවිතර
| පරාමිතිය | වටිනාකම |
|---|---|
| ආදර්ශ අංකය | AI532 |
| මිනුම් පරාමිතීන් | Conductivity (EC), TDS, Salinity, Resistivity, Temperature |
| සන්නායකතා පරාසය | 0 to 2,000 mS |
| නිරවද්යතාව | ±0.5% FS |
| ක්රමාංකන ලකුණු | 1 to 4 points auto-calibration (84µS/cm, 1413µS/cm, 12.88mS/cm, 111.8mS/cm) |
| උෂ්ණත්ව වන්දි | ස්වයංක්රීය උෂ්ණත්ව වන්දි (ATC) |
| දත්ත ගබඩා කිරීම | 500 groups (GLP compliant) |
| සම්බන්ධතාවය | USB for PC data export |
| සංදර්ශක වර්ගය | විශාල බැක්ලයිට් එල්සීඩී |
| බල සැපයුම | 9V DC, 300mA (120V AC 60Hz adapter included) |
| ඇතුල්වීමේ ආරක්ෂාව | IP54 ජල-ප්රතිරෝධී |
| සහතික | CE, RoHS, ISO 9001:2015 |
| පැකේජ මානයන් | අඟල් 10.63 x 9.88 x 6.61 |
| බර | පවුම් 6.5ක් |
9. වගකීම් සහ සහාය
Apera Instruments products are manufactured under an ISO 9001:2015 certified quality system, ensuring high standards of quality and reliability. For specific warranty information and technical support, please refer to the warranty card included with your product or visit the official Apera Instruments webඅඩවිය.
For assistance with troubleshooting, calibration, or general inquiries, please contact Apera Instruments customer service. Contact details can typically be found on their official webඅඩවියේ හෝ නිෂ්පාදන ඇසුරුම්වල.
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