UNI-T UT334-NH3 Portable Single Gas Detector User Manual

1. المقدمة

The UNI-T UT334 series portable single gas detector is designed for the detection of specific gases, utilizing a free diffusion method. This model, the UT334-NH3, is specifically calibrated for Ammonia (NH3) detection. It incorporates high-quality gas sensors to ensure excellent sensitivity and repeatability in measurements. The device is engineered for ease of use and maintenance, meeting the demands for reliable safety monitoring in industrial environments. Its robust casing, constructed from high-strength engineering plastic, provides durability, a comfortable grip, and features waterproof, dustproof, and explosion-proof capabilities. This detector is suitable for various industries, including petroleum, chemical, environmental protection, metallurgy, refining, gas transmission and distribution, biomedicine, and agriculture.

2. انتهى المنتجview

2.1 الميزات الرئيسية

• Equipped with high-quality and sensitive sensors for accurate detection.
• High-definition color screen display for clear readings.
• Multiple alarm methods: audible, visual (alarm light), and vibration.
• Ability to display measurement data as a curve graph over time.
• Certified explosion-proof design for safe operation in hazardous environments.

2.2 مكونات الجهاز

The UT334-NH3 detector features a clear display, intuitive control buttons, and a robust housing. Refer to the image below for a visual representation of the device's main components.

الشكل 1: أمام view of the UNI-T UT334-NH3 Portable Single Gas Detector. The display shows the model number, current date and time, battery status, and alarm indicators. The main reading area indicates "Ammonia" (氨气), a temperature of 31°C, a gas concentration of 0 PPM, and a "Normal" status. Below the screen are navigation buttons (left, MENU, right) and a power button.

• شاشة العرض: High-definition color screen showing gas concentration, temperature, time, battery status, and alarm indicators.
• أزرار التحكم: Includes navigation buttons (left/right arrows), a MENU button for accessing settings, and a power button.
• Sensor Inlet: Located at the bottom, protected by a grille, for gas sampلينغ.
• مؤشرات الإنذار: Visual (LEDs) and audible (speaker) alarm components.

3. الإعداد

3.1 تركيب البطارية وشحنها

1. Ensure the device is powered off before installing or replacing batteries.
2. حدد موقع غطاء حجرة البطارية، والذي يوجد عادةً في الجزء الخلفي أو الجانبي من الجهاز.
3. Open the cover and insert the specified rechargeable battery, observing correct polarity.
4. أغلق غطاء حجرة البطارية جيدًا.
5. For initial use or after prolonged storage, fully charge the device using the provided charger. Connect the charger to the device's charging port and a suitable power source. The charging indicator on the display will show charging status.

3.2 التشغيل الأولي

1. Press and hold the power button (usually marked with a power symbol) for a few seconds until the display illuminates.
2. The device will perform a self-test and warm-up sequence. During this time, do not expose the sensor to gas.
3. Once the self-test is complete, the device will enter normal measurement mode, displaying the current gas concentration, temperature, and other relevant information.

4. تعليمات التشغيل

4.1 تشغيل/إيقاف التشغيل

• تشغيل الطاقة: اضغط مع الاستمرار على زر الطاقة حتى يتم تشغيل الشاشة.
• إيقاف التشغيل: Press and hold the power button until a power-off prompt appears, then confirm the shutdown.

4.2 قراءة الشاشة

The high-definition color screen provides real-time information:

• تركيز الغاز: The large central number indicates the current gas concentration in Parts Per Million (PPM).
• نوع الغاز: The detected gas type (e.g., "Ammonia" for UT334-NH3) is displayed.
• درجة حرارة: Ambient temperature is shown in degrees Celsius (°C).
• التاريخ والوقت: Current date and time are displayed.
• حالة البطارية: An icon indicates the remaining battery life.
• مؤشرات الإنذار: Icons for sound, vibration, and visual alarms are present.
• رسالة الحالة: Messages like "Normal" indicate safe operating conditions.

4.3 تصفح القائمة

اضغط على قائمة طعام button to access the device's settings and functions. Use the left (◀) و صحيح (▶) arrow buttons to navigate through menu options. Press قائمة طعام again to select an option or confirm a setting. Common menu options may include:

• إعدادات التنبيه: Adjust alarm thresholds (low and high), enable/disable audible, visual, or vibration alarms.
• المعايرة الصفرية: Perform a zero calibration in fresh air to ensure accurate baseline readings.
• إعدادات الوحدة: Change temperature units or other display units if applicable.
• تسجيل البيانات: Access historical data or curve graphs.
• معلومات النظام: View device details, firmware version, etc.

4.4 وظيفة التنبيه

The detector is equipped with multiple alarm types to alert users to hazardous gas levels:

• إنذار مسموعة: A loud sound alerts users to a gas event.
• إنذار مرئي: Flashing LED lights provide a clear visual warning.
• إنذار الاهتزاز: The device vibrates, useful in noisy environments or when worn on the body.

Alarms are triggered when the detected gas concentration exceeds the preset low or high alarm thresholds. Refer to the menu settings to adjust these thresholds according to safety regulations and specific application requirements.

5. الصيانة

5.1 التنظيف

• امسح الجزء الخارجي من الجهاز بانتظام بقطعة قماش ناعمة.amp قطعة قماش.
• Do not use abrasive cleaners, solvents, or corrosive chemicals, as these can damage the casing or sensor.
• Ensure the sensor inlet is free from dust and debris. Use a soft brush if necessary.

5.2 معايرة جهاز الاستشعار

To maintain accuracy, periodic calibration of the gas sensor is essential. This typically involves:

• المعايرة الصفرية: Performed in a clean, fresh air environment free of the target gas. This sets the baseline for zero concentration.
• معايرة النطاق: Performed using a certified calibration gas of known concentration. This adjusts the sensor's response to the target gas.

Refer to the device's menu for calibration options. It is recommended to follow a regular calibration schedule as per industry standards or manufacturer guidelines, typically every 6 to 12 months, or if readings appear inaccurate.

5.3 العناية بالبطارية

• اشحن البطارية بالكامل قبل الاستخدام الأول وكلما ظهر مؤشر انخفاض مستوى البطارية.
• تجنب استنزاف البطارية بالكامل بشكل متكرر، لأن ذلك قد يقلل من عمرها الافتراضي.
• If storing the device for an extended period, charge the battery to approximately 50% and store in a cool, dry place.

6. استكشاف الأخطاء وإصلاحها

If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact UNI-T customer support for further assistance.

7. المواصفات

8. الضمان والدعم

UNI-T products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty. For specific warranty terms, duration, and conditions, please refer to the warranty card included with your product or visit the official UNI-T website. For technical support, service, or inquiries regarding your UT334-NH3 detector, please contact UNI-T customer service through their official channels. Keep your purchase receipt as proof of purchase for warranty claims.

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