Uživatelská příručka k elektronickému pH metru Lutron PH-222

1. Úvod

This manual provides comprehensive instructions for the proper setup, operation, calibration, and maintenance of the Lutron PH-222 Electronic Pen pH Meter. The PH-222 is a portable, high-precision instrument designed for accurate pH measurements in various applications, including water quality testing, laboratory analysis, and industrial processes. Adherence to these instructions will ensure optimal performance and longevity of the device.

2. Bezpečnostní informace

Please read and understand all safety instructions before operating the Lutron PH-222 pH Meter. Failure to follow these guidelines may result in injury or damage to the instrument.

• Always handle the pH electrode with care. The glass bulb is fragile.
• Do not ingest pH buffer solutions. In case of accidental ingestion, seek medical attention immediately.
• Chraňte zařízení před extrémními teplotami, přímým slunečním zářením a vysokou vlhkostí.
• Ensure the battery compartment is properly sealed to maintain the IP-67 waterproof rating.
• Použité baterie zlikvidujte v souladu s místními předpisy.
• Do not attempt to disassemble or modify the meter, as this will void the warranty and may cause damage.

3. Obsah balení

Po vybalení zkontrolujte, zda jsou všechny níže uvedené položky přítomny a nepoškozené:

• Lutron PH-222 Electronic Pen pH Meter
• Návod k obsluze
• Kalibrační certifikát
• pH 4.00 Buffer Solution (small bottle)
• pH 7.00 Buffer Solution (small bottle)

Obrázek 3.1: Contents of the Lutron PH-222 package. This image displays the PH-222 pen pH meter, its operation manual, a calibration certificate, and two small bottles of pH buffer solutions (pH 4.00 and pH 7.00).

4. Vlastnosti produktu

The Lutron PH-222 pH Meter incorporates several features designed for user convenience and accurate measurement:

• Easy to Change the pH Electrode: Facilitates quick replacement of the sensing electrode.
• High Input Impedance: Ensures minimal current draw from the pH electrode, leading to stable and accurate readings.
• Data Hold Function: Allows freezing of the displayed value for convenient recording.
• Auto Power Off: Conserves battery life by automatically shutting down after a period of inactivity.
• 100 Point Data Logger with Recall: Stores up to 100 measurement points for later review.
• IP-67 Waterproof Rating: Provides protection against dust and immersion in water up to 1 meter for 30 minutes.

Obrázek 4.1: Přední view of the Lutron PH-222 Electronic Pen pH Meter, showing the display and control buttons (POWER, HOLD, REC).

5. Nastavení

5.1 Instalace baterie

The Lutron PH-222 requires batteries for operation (not included in the package). To install or replace batteries:

1. Twist the top cap of the meter counter-clockwise to open the battery compartment.
2. Vložte dvě 1.5V baterie typu AAA a dodržujte správnou polaritu (+/-) vyznačenou uvnitř přihrádky.
3. Securely close the battery compartment by twisting the cap clockwise until it is tight to maintain the waterproof seal.

5.2 Electrode Preparation

1. Carefully remove the protective cap from the bottom of the pH electrode. The cap typically contains a small amount of storage solution to keep the electrode moist.
2. Rinse the electrode tip with distilled or deionized water to remove any residual storage solution. Gently blot dry with a lint-free tissue. Do not rub the glass bulb.

6. Provoz

6.1 Zapnutí/vypnutí

Stiskněte tlačítko MOC button to turn the meter on or off.

6.2 Provedení měření

1. Ensure the meter is calibrated (refer to Section 7).
2. Immerse the pH electrode tip into the sample solution, ensuring the glass bulb is fully submerged.
3. Gently stir the solution to ensure homogeneity and allow the reading to stabilize. The display will show the pH value.
4. Record the stable pH reading.
5. After measurement, rinse the electrode with distilled water and replace the protective cap.

6.3 Funkce Data Hold

Chcete-li zmrazit aktuální hodnotu na displeji, stiskněte tlačítko DRŽET button. Press it again to release the hold and return to live measurement.

6.4 Data Logging and Recall

The PH-222 can store up to 100 measurement points. Refer to the detailed operation manual included in the package for specific instructions on how to use the REC button for data logging and recall functions.

7. Kalibrace

Regular calibration is essential for accurate pH measurements. The Lutron PH-222 supports multi-point calibration using standard buffer solutions. It is recommended to calibrate the meter before each use or if readings appear inaccurate.

7.1 Calibration Procedure (Two-Point)

The PH-222 typically uses a two-point calibration with pH 7.00 and pH 4.00 (or pH 10.00) buffer solutions.

1. Prepare fresh pH 7.00 and pH 4.00 buffer solutions. Ensure they are at the same temperature as your samples.
2. Turn on the meter and rinse the electrode with distilled water.
3. Ponořte elektrodu do pufrovacího roztoku o pH 7.00.
4. Stiskněte a podržte CAL button (often integrated with the REC button, refer to the device's specific button functions) until the calibration mode is activated. The display will typically show 'CAL' or a flashing pH value.
5. Wait for the reading to stabilize. The meter will automatically recognize the buffer and complete the calibration for pH 7.00.
6. Opláchněte elektrodu destilovanou vodou.
7. Ponořte elektrodu do pufrovacího roztoku o pH 4.00.
8. Repeat the calibration process. The meter will automatically recognize the buffer and complete the calibration for pH 4.00.
9. Once calibration is complete, the meter will return to measurement mode.

Obrázek 7.1: Standard pH 4.00 and pH 7.00 buffer solutions used for calibrating the pH meter.

8. Údržba

8.1 Electrode Care and Storage

• Always keep the electrode tip moist. Never allow the electrode to dry out. Store it in its protective cap containing a small amount of storage solution (or 3M KCl solution).
• Rinse the electrode with distilled water after each use to prevent contamination.
• If the electrode becomes dirty or fouled, clean it gently according to the instructions in the full operation manual.
• Replace the electrode when it no longer calibrates correctly or provides stable readings.

8.2 Obecné čištění

Otřete tělo měřiče reklamouamp tkanina. Nepoužívejte abrazivní čisticí prostředky nebo rozpouštědla.

8.3 Výměna baterie

Replace batteries when the low battery indicator appears on the display or if the meter fails to power on. Refer to Section 5.1 for battery installation instructions.

9. Řešení problémů

10. Specifikace

11. Záruka a podpora

For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact your authorized Lutron dealer or the manufacturer directly. Ensure you have your product model number (PH-222) and purchase details available when seeking support.