1. Úvod

Thank you for choosing the QANYEGN ST8904 4-in-1 Gas Detector. This device is designed for accurate and reliable detection of four common gases: Hydrogen Sulfide (H2S), Oxygen (O2), Carbon Monoxide (CO), and Combustible Gas (LEL). It features a high-sensitivity sensor, multiple alarm modes, a clear backlit display, and a rechargeable battery, making it suitable for various industrial and professional applications.

This manual provides essential information for the safe and effective use of your gas detector. Please read it thoroughly before operation and retain it for future reference.

2. Bezpečnostní informace

VAROVÁNÍ: Nedodržení těchto bezpečnostních pokynů může vést k vážnému zranění nebo smrti.

• Always operate the device in accordance with this instruction manual.
• The gas detector is a safety device. Do not tamps jeho vnitřními součástmi.
• Ensure the device is regularly calibrated and maintained to guarantee accurate readings. Refer to the maintenance section for guidance.
• Nevystavujte zařízení extrémním teplotám, vlhkosti ani korozivnímu prostředí.
• Before use in hazardous environments, verify the device is fully charged and functioning correctly.
• This device is intended to assist in gas detection and should not replace proper safety protocols and personal protective equipment.
• If the device indicates a dangerous gas level, evacuate the area immediately and follow your organization's safety procedures.

3. Obsah balení

Po vybalení se prosím ujistěte, že jsou všechny níže uvedené položky přítomny a v dobrém stavu:

• 1 x QANYEGN ST8904 4-in-1 Gas Monitor
• 4 x Accessories (e.g., protective cover, calibration cap, etc.)
• 1 x USB nabíjecí kabel
• 1 x Uživatelská příručka (tento dokument)
• 1 x úložný sáček

Image 3.1: The QANYEGN ST8904 4-in-1 Gas Detector shown with its protective storage bag, USB charging cable, and other accessories.

4. Zařízení skončiloview

4.1 Součásti a ovládací prvky

Familiarize yourself with the various parts of your ST8904 Gas Detector:

Obrázek 4.1: Přední strana view of the ST8904 Gas Detector with key components labeled.

• Displej LCD: Shows gas concentrations, battery status, and other operational information.
• Světelný alarm: Visual indicator for gas alarms.
• Zvukový alarm: Sound emitter for gas alarms.
• Selection Keys (Up/Down): Používá se pro navigaci v menu a úpravu nastavení.
• Potvrdit klíč: Používá se k potvrzení výběru nebo vstupu do menu.
• Vypínač: Zapíná/vypíná zařízení.
• Nabíjecí rozhraní: USB port pro dobíjení interní baterie.
• Air Pump Connection Port: For connecting an external air pump (if applicable for specific models/accessories).
• Sensor Window: Area where gas sensors are located. Keep clear of obstructions.

4.2 Zobrazení informací

The backlit LCD provides real-time data:

Image 4.2: The ST8904's backlit display showing gas concentration readings for O2, H2S, LEL, and CO.

• O2 %VOL: Oxygen concentration in percentage by volume.
• H2S PPM: Hydrogen Sulfide concentration in parts per million.
• LEL %LEL: Combustible gas concentration as a percentage of the Lower Explosive Limit.
• CO PPM: Carbon Monoxide concentration in parts per million.
• Indikátor baterie: Zobrazuje aktuální úroveň nabití baterie.
• SKENOVAT: Indicates scanning mode.

5. Nastavení

5.1 Počáteční nabíjení

Before first use, fully charge the device. Connect the provided USB cable to the charging interface on the detector and plug the other end into a compatible USB power source (e.g., computer, power bank, USB wall adapter). The battery indicator on the display will show charging status.

5.2 Zapnutí/vypnutí

• Zapnutí: Stiskněte a podržte Tlačítko napájení for approximately 3 seconds until the display illuminates and the device performs a self-test.
• Vypnutí: Stiskněte a podržte Tlačítko napájení for approximately 3 seconds. The device will prompt for confirmation before shutting down.

6. Provoz

6.1 Detekce plynu

Once powered on, the ST8904 will automatically begin detecting gases. The real-time concentrations for H2S, O2, CO, and LEL will be displayed on the LCD screen. Ensure the sensor window is unobstructed for accurate readings.

Image 6.1: The ST8904 Gas Detector being used in an environment where gas monitoring is critical.

6.2 režimy alarmu

The device is equipped with three distinct alarm modes to alert users to dangerous gas levels:

Image 6.2: Visual representation of the triple alarm system: vibration, audible beep, and flashing light.

• Zvukový alarm: A loud beeping sound.
• Vizuální alarm: The light alarm will flash brightly.
• Vibrační alarm: Zařízení bude vibrovat.

These alarms activate simultaneously when detected gas concentrations exceed the preset high or low alarm thresholds. Users can typically adjust these thresholds through the device's menu settings using the Selection and Confirm keys. Refer to the on-screen menu for specific navigation.

6.3 Belt Clip Usage

The integrated belt clip allows for convenient and secure carrying of the device during use.

Image 6.3: The durable metal clip on the rear of the ST8904 for attaching to clothing or equipment.

7. Údržba

7.1 Čištění

Pravidelně čistěte vnější povrch zařízení měkkým, damp cloth. Do not use abrasive cleaners, solvents, or immerse the device in water. Ensure the sensor window remains clear of dust and debris.

7.2 Péče o baterii

• Zařízení nabijte, když indikátor baterie ukazuje nízký stav nabití.
• Abyste prodloužili životnost baterie, vyhněte se častému úplnému vybíjení.
• If storing the device for an extended period, charge it to approximately 50% and recharge every few months.

7.3 Kalibrace snímače

Gas detectors require periodic calibration to maintain accuracy. The frequency of calibration depends on usage, environmental conditions, and regulatory requirements. Consult with a qualified technician or refer to specific calibration instructions provided by QANYEGN for your model. Do not attempt to calibrate the sensors without proper equipment and training.

8. Řešení problémů

If you encounter issues with your ST8904 Gas Detector, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact QANYEGN customer support for further assistance.

9. Specifikace

The following are the technical specifications for the QANYEGN ST8904 4-in-1 Gas Detector:

Image 9.1: Detailed dimensions of the ST8904 Gas Detector.

10. Záruka a podpora

10.1 Informace o záruce

QANYEGN products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims. Specific warranty terms and duration may vary by region and retailer. For detailed warranty information, please refer to the documentation included with your purchase or contact QANYEGN customer support.

10.2 Zákaznická podpora

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact QANYEGN customer support. Contact details can typically be found on the product packaging, the official QANYEGN webna vašem webu nebo prostřednictvím vašeho prodejního místa.