1. Ifihan
This manual provides instructions for the proper setup, operation, and maintenance of the Apera Instruments MP511 Benchtop pH Meter. The MP511 is designed for accurate pH measurements with a range of -2.00 to 19.99 pH and an accuracy of ±0.01 pH. It features automatic temperature compensation (ATC), auto-calibration with buffer recognition, and advanced digital filtering technology for improved response time and accuracy. The meter also includes GLP standard data management, storage for 500 data sets, and RS232 data output.
2. Package Awọn akoonu
Rii daju pe gbogbo awọn paati wa lori ṣiṣi silẹ:
- MP511 Benchtop pH Meter Unit
- 3-in-1 Combination pH Electrode
- Flexible Electrode Holder
- RS232 Software (typically on a CD or available for download)
- Adapter agbara
- pH Buffer Solutions (e.g., pH 4.00, 7.00, 10.01)
- Ilana itọnisọna
3. Eto
- Assemble the Electrode Holder: Attach the flexible electrode holder to the meter base. Ensure it is securely fastened to provide stable support for the electrode.
- Connect the Electrode: Plug the BNC connector of the 3-in-1 combination pH electrode into the pH/mV input port on the back of the meter. If a separate temperature probe is used, connect it to the TEMP port.
- So agbara: Plug the DC 9V power adapter into the DC 9V port on the back of the meter and then into a standard electrical outlet.
- Ibi Ibẹrẹ: Place the electrode in its storage solution or a beaker of distilled water when not in use.

Nọmba 3.1: The Apera Instruments MP511 Benchtop pH Meter with its electrode immersed in a sample solution within a beaker, demonstrating a typical setup for pH measurement. The flexible electrode holder is visible, supporting the electrode.
4. Isẹ
- Titan/Apapa: Tẹ awọn TAN/PA bọtini lati tan tabi pa mita naa.
- Aṣayan Ipo: Tẹ awọn MODE button to cycle through different measurement modes (pH, mV, temperature).
- Aṣayan Ẹka: Tẹ awọn UNIT button to change temperature units between °C and °F.
- Data Storage/Recall: Lo awọn M+/RM button to store current readings or recall previously stored data.
- Confirm/Enter: Awọn WOLE button is used to confirm selections or enter calibration mode.

Nọmba 4.1: A alaye view of the MP511 meter's LCD display and control panel, showing the CAL, ON/OFF, M+/RM, MODE, ENTER, and UNIT buttons. The display shows pH and temperature readings.
5. Iṣatunṣe
Regular calibration is essential for accurate pH measurements. The MP511 features automatic calibration with buffer recognition.
- Prepare Buffers: Ensure you have fresh pH buffer solutions (e.g., pH 4.00, 7.00, 10.01) at room temperature.
- Fi omi ṣan elekitirodu: Rinse the electrode thoroughly with distilled water and gently blot dry with a lint-free tissue.
- Tẹ Ipo Iṣatunṣe: With the meter powered on and in pH mode, press the CAL button. The display will indicate calibration mode.
- First Buffer Calibration: Immerse the electrode into the first buffer solution (e.g., pH 7.00). The meter will automatically recognize the buffer and stabilize. Press WOLE lati jẹrisi.
- Subsequent Buffer Calibration: Rinse the electrode again. Immerse it into the next buffer solution (e.g., pH 4.00 or pH 10.01). The meter will recognize and stabilize. Press WOLE to confirm. Repeat for additional buffer points as needed.
- Exit Calibration: After completing all desired calibration points, the meter will automatically return to measurement mode or prompt to save calibration.
6. Awọn ọna wiwọn
The MP511 offers three distinct measurement modes:
- Stable Measurement Display Mode: Displays the pH reading once it has stabilized. This is the standard mode for most measurements.
- Timing Measuring Mode: Allows for measurements at set intervals, useful for monitoring changes over time.
- Ipo Idiwọn Tesiwaju: Provides real-time, continuous pH readings, suitable for dynamic processes.
Refer to the detailed instructions in the full manual for specific steps on how to select and configure each measurement mode.
7. Data Management
The MP511 incorporates GLP (Good Laboratory Practice) standard data management features:
- Ibi ipamọ data: The meter can store up to 500 sets of measurement data.
- Awọn ọna ipamọ: Data can be stored manually or automatically at user-defined timing intervals.
- Abajade data: An RS232 port is provided for connecting the meter to a computer to transfer stored data using the included software.

Nọmba 7.1: The rear panel of the MP511 meter, displaying the REF, pH/mV, TEMP, RS232, and DC 9V input ports. The RS232 port facilitates data transfer to a computer.
8. Itọju
Proper maintenance ensures the longevity and accuracy of your pH meter.
- Abojuto elekitirodu:
- Always keep the electrode bulb immersed in storage solution when not in use. Never store it dry.
- Rinse the electrode with distilled water before and after each measurement.
- Clean the electrode regularly according to the electrode's specific cleaning instructions, especially if readings become sluggish or inaccurate.
- Ìmọ́tótó Mita: The MP511 meter unit meets IP54 waterproof and dustproof standards. Clean the exterior with a damp asọ. Yago fun lilo awọn kẹmika lile tabi awọn ohun elo abrasive.
- Orisun Agbara: The meter is battery-powered (though also uses a DC 9V adapter). Ensure the power adapter is used correctly. If using internal batteries, replace them as needed.
9. Laasigbotitusita
| Isoro | Owun to le Fa | Ojutu |
|---|---|---|
| Awọn kika aiduro | Dirty electrode; air bubbles; insufficient sample volume; electromagnetic interference | Clean electrode; gently tap electrode to remove bubbles; ensure adequate sample; move meter away from interference sources |
| Aṣiṣe odiwọn | Expired or contaminated buffer solutions; dirty electrode; incorrect buffer sequence | Use fresh buffer solutions; clean electrode; ensure correct buffer order (e.g., 7.00 first) |
| No display/Power issue | Power adapter not connected; faulty power adapter; internal battery depletion | Check power connection; try a different outlet; replace internal batteries if applicable |
| O lọra esi akoko | Electrode dry or contaminated; old electrode | Rehydrate electrode in storage solution; clean electrode; consider electrode replacement |
10. Awọn pato
| Paramita | Iye |
|---|---|
| Nọmba awoṣe | AI511 (MP511) |
| pH Ibiti | -2.00 to 19.99 pH |
| pH Yiye | ± 0.01 pH |
| Biinu iwọn otutu | Automatic (ATC) |
| Isọdiwọn | Auto Calibration with buffer recognition |
| Ibi ipamọ data | 500 data sets (manual/auto timing storage) |
| Asopọmọra | RS232 |
| Ifihan Iru | LCD pẹlu bulu backlight |
| Ingress Idaabobo (IP) Rating | IP54 (Mabomire ati eruku) |
| Ọja Mefa | 19.05 x 16 x 7.11 cm |
| Iwọn Ọja | 878.84 g |
| Orisun agbara | Battery Powered (with DC 9V adapter) |
| Olupese | Shanghai Sanxin Instrumentation |
11. Atilẹyin ọja ati Support
For warranty information, technical support, or service inquiries, please contact Apera Instruments directly through their official webojula tabi onibara iṣẹ awọn ikanni. Tọju iwe-ẹri rira rẹ bi ẹri rira.





