Walfront HT-1202 Digital Water Quality Tester Instruction Manual

1. Úvod

The Walfront HT-1202 Digital Water Quality Tester is a versatile instrument designed for accurate measurement of pH and mV values, along with temperature, in various aqueous solutions. This device is suitable for a wide range of applications including environmental monitoring, wastewater treatment, chemical laboratories, pharmaceutical research, fermentation processes, chemical engineering, and water supply analysis. Its high measurement accuracy and user-friendly design make it an essential tool for professionals and enthusiasts alike.

Image 1.1: Walfront HT-1202 Digital Water Quality Tester

2. Vlastnosti produktu

• Široký rozsah měření: Measures pH from 0 to 14 with a 0.01 resolution and mV from -415mV to 415mV.
• Vysoká přesnost: Provides pH measurements with an accuracy of up to ±0.05pH and mV measurements with ±0.1% FS.
• Teplotní kompenzace: Features automatic temperature compensation for accurate readings across a range of 0℃ to 60℃.
• Velký LCD displej: Equipped with a large LCD that simultaneously displays pH or mV and temperature. The backlight activates automatically for clear viewza různých světelných podmínek.
• Automatické vypnutí: Includes an automatic power-off function after 4 minutes of inactivity to conserve battery life.
• Kontrola kalibrace: Incorporates a calibration check function to validate instrument performance and ensure reliability.

Image 2.1: Key components of the HT-1202 Digital Water Quality Tester

3. Obsah balení

Po otevření balení se prosím ujistěte, že obsahuje všechny následující položky:

• 1 x Walfront HT-1202 Digital Water Quality Tester
• 1 x Combined Electrode
• 1 x Package of Standard Buffer Reagents (for calibration)
• 1 x Electrode Soaking Liquid
• 1 x Návod k použití
• 1 x Black Carrying Case

Image 3.1: HT-1202 tester and its accessories

Image 3.2: HT-1202 kit in its protective carrying case

4. Nastavení

4.1 Instalace baterie

1. Vyhledejte kryt přihrádky na baterie na zadní straně zařízení.
2. Posuňte nebo odepněte kryt pro otevření přihrádky.
3. Insert the required batteries (typically AA, refer to the compartment label for exact type and polarity) ensuring correct orientation.
4. Bezpečně zavřete kryt bateriového prostoru.

Image 4.1: Battery compartment of the HT-1202

4.2 Připojení elektrody

1. Carefully remove the protective cap from the combined electrode.
2. Connect the electrode cable to the host interface port located at the top of the HT-1202 tester. Ensure a firm and secure connection.

4.3 Počáteční příprava

• Electrode Soaking: Before first use or after prolonged storage, soak the electrode in the provided electrode soaking liquid for at least 30 minutes to ensure optimal performance.
• Buffer Solution Preparation: When preparing buffer solutions for calibration using the provided reagents, use distilled water that has been boiled for 15-30 minutes and then cooled. This process removes dissolved carbon dioxide, which can affect pH accuracy. Avoid prolonged exposure to air during cooling to prevent re-absorption of carbon dioxide.

5. Návod k obsluze

5.1 Zapnutí/vypnutí

• Chcete-li zařízení zapnout, stiskněte Moc button. The LCD backlight will automatically activate.
• The device will automatically power off after 4 minutes of inactivity to save energy. To manually power off, press and hold the Moc tlačítko.

5.2 Kalibrace

Regular calibration is crucial for maintaining the accuracy of your HT-1202 tester. Use the provided standard buffer reagents to prepare calibration solutions (e.g., pH 4.00, pH 6.86, pH 9.18).

1. Zapněte měřidlo.
2. Rinse the electrode with distilled water and gently blot dry with a clean tissue.
3. Immerse the electrode into the first standard buffer solution (e.g., pH 6.86).
4. Stiskněte tlačítko Menu button to enter calibration mode. Follow the on-screen prompts to select the appropriate buffer value.
5. Stiskněte Vstupte to confirm. The meter will automatically recognize the buffer and calibrate. Wait for the reading to stabilize and for the calibration indicator to confirm completion.
6. Repeat the process for other buffer solutions (e.g., pH 4.00 and pH 9.18) as needed for multi-point calibration.
7. After calibration, rinse the electrode thoroughly with distilled water.

5.3 Měření

1. Ensure the meter is calibrated and the electrode is clean.
2. Ponořte elektrodu doample solution to be tested. Ensure the electrode tip is fully submerged.
3. Roztok jemně promíchejte, aby se zajistila homogenita a aby se naměřená hodnota stabilizovala.
4. Read the pH or mV value and temperature displayed on the LCD screen.
5. After measurement, rinse the electrode with distilled water and replace the protective cap.

Image 5.1: HT-1202 in operation

6. Údržba

6.1 Péče o elektrody

• Always keep the electrode tip moist. Store it in the provided electrode soaking liquid or a suitable storage solution when not in use. Never store the electrode dry.
• Rinse the electrode thoroughly with distilled water before and after each measurement to prevent cross-contamination and residue buildup.
• If the electrode becomes dirty or readings become sluggish, clean it according to the electrode manufacturer's instructions (typically involving a mild cleaning solution).

6.2 Výměna baterie

When the low power indicator appears on the screen, replace the batteries promptly to ensure continuous and accurate operation. Refer to Section 4.1 for battery installation instructions.

6.3 Skladování

Store the HT-1202 tester and its accessories in the provided black carrying case in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the electrode is properly stored with its protective cap and soaking solution.

7. Řešení problémů

• No Power / Display Off: Zkontrolujte instalaci baterií a ujistěte se, že nejsou vybité. V případě potřeby je vyměňte.
• Nepřesná čtení:
  • Recalibrate the meter using fresh standard buffer solutions.
  • Ensure the electrode is clean and properly soaked.
  • Verify that the temperature compensation is functioning correctly.
  • Check for any damage to the electrode.
• Pomalá doba odezvy: The electrode may be dry or dirty. Clean and re-soak the electrode.
• Indikátor nízké spotřeby: Ihned vyměňte baterie.

8. Specifikace

Image 8.1: HT-1202 product dimensions

9. Environmental Conditions for Use

To ensure optimal performance and longevity of the instrument, adhere to the following environmental conditions:

• Okolní teplota: 5℃ - 40℃
• Relativní vlhkost: ≤85% RH (nekondenzující)
• Vibrace: Operate in an environment free from vibrations that could affect performance.
• Korozivní plyny: Ensure the surrounding air is free from corrosive gases.
• Magnetické rušení: Avoid other magnetic field interference outside the Earth's magnetic field.

10. Záruka a podpora

For information regarding warranty coverage, technical support, or service inquiries for your Walfront HT-1202 Digital Water Quality Tester, please refer to the contact information provided with your purchase documentation or visit the official Walfront webUschovejte si účtenku jako doklad o koupi pro případné reklamace.