1. المقدمة
The UNI-T UT334F is a portable, voice-enabled 4-in-1 gas detector designed for continuous monitoring of gas concentrations. This safety device utilizes advanced integrated circuit technology, embedded microcomputer control, and high-quality imported gas sensors to provide excellent sensitivity and repeatability. It features a 2.4-inch color LCD display with support for English and Chinese interfaces and voice prompts, ensuring ease of use and maintenance. The robust shell is constructed from high-strength engineering plastic, offering good vibration resistance, high strength, dust protection, waterproofing, and explosion-proof capabilities.
This manual provides essential information for the safe and effective operation, setup, and maintenance of your UT334F gas detector.
2. معلومات السلامة
WARNING: Read all safety instructions before operating this device. Failure to follow these instructions may result in injury, damage to the device, or inaccurate readings.
- Always operate the device in well-ventilated areas unless specifically testing for gas leaks in confined spaces.
- Do not attempt to open or modify the device. Servicing should only be performed by qualified personnel.
- Ensure the device is properly calibrated according to manufacturer guidelines to maintain accuracy.
- احمِ الجهاز من درجات الحرارة القصوى والرطوبة وأشعة الشمس المباشرة.
- Avoid exposing the sensors to corrosive substances or high concentrations of gas that may damage them.
- حافظ على نظافة الجهاز وخاليًا من الغبار والحطام.
- The device is explosion-proof; however, always follow local safety regulations when operating in potentially explosive atmospheres.
3. انتهى المنتجview
3.1 الميزات الرئيسية
- الكشف عن الغازات المتعددة: Simultaneously detects EX (combustible gas), H2S (Hydrogen Sulfide), CO (Carbon Monoxide), and O2 (Oxygen).
- Quadruple Alarm System: Features sound, light, vibration, and screen flashing alarms for comprehensive alert notification.
- واجهة سهلة الاستخدام: Supports both English and Chinese display interfaces with corresponding voice prompts.
- بطارية ذات سعة عالية: Equipped with a 2500mAh built-in high-capacity lithium battery for extended operation.
- تخزين البيانات: Automatically stores detection records, which can be viewed and deleted directly on the device.
- عرض واضح: 2.4-inch color LCD display provides clear visualization of gas detection indicators and data.
- بناء متين: Made from high-strength engineering plastic, offering anti-compression, anti-drop, and explosion-proof properties.
- أجهزة استشعار عالية الدقة: Utilizes imported sensors for sensitive induction, short response time, and accurate detection.
- Curve Drawing Function: Supports graphical representation of gas concentration over time, aiding in observing periodic states.
- Configurable Alarms: Allows users to set high and low alarm values.
- المعالجة المتقدمة: Incorporates a high-precision ADC acquisition chip and a 32-bit nano-level microprocessor for higher resolution and faster response.
3.2 مكونات الجهاز
The UNI-T UT334F features a compact design with an intuitive layout for easy operation.

- Gas Sensor Inlet: Located at the top of the device, where gas samples are drawn for analysis.
- شاشة LCD ملونة مقاس 2.4 بوصة: Front-facing screen showing real-time gas concentrations, alarm status, battery level, and other operational information.
- أزرار التحكم: Typically include Power/OK, Navigation (Up/Down/Left/Right) buttons for menu interaction and settings adjustment.
- مؤشرات الإنذار: Integrated LED lights for visual alarms, internal buzzer for audible alarms, and a vibration motor for tactile alerts.
- منفذ شحن MicroUSB: Located on the side or bottom for battery charging.

4. الإعداد
4.1 الشحن الأولي
The UT334F is equipped with a built-in 2500mAh lithium battery. Before first use, or if the battery is low, charge the device using the provided MicroUSB cable and a compatible power adapter (not always included, typically a standard 5V USB charger).
- Connect the MicroUSB cable to the charging port on the device.
- قم بتوصيل الطرف الآخر من الكبل بمصدر طاقة USB.
- The display will show a charging indicator. Allow the device to charge fully.

4.2 تشغيل/إيقاف التشغيل
- لتشغيل: Press and hold the Power/OK button for a few seconds until the display illuminates and the device starts up.
- لإيقاف التشغيل: Press and hold the Power/OK button. A prompt may appear asking for confirmation to shut down. Select "Yes" or press the Power/OK button again to confirm.
4.3 اختيار اللغة
The device supports both English and Chinese interfaces. Refer to the device's menu settings to switch between languages. Typically, this can be found under "System Settings" or "Language".
5. تعليمات التشغيل
5.1 Real-time Gas Detection
Once powered on, the UT334F will automatically begin detecting gas concentrations in its environment. The 2.4-inch color LCD display will show real-time readings for EX, H2S, CO, and O2.
- السابق: Combustible gas concentration, typically displayed in %LEL (Lower Explosive Limit).
- H2S: Hydrogen Sulfide concentration, typically displayed in PPM (Parts Per Million).
- CO: Carbon Monoxide concentration, typically displayed in PPM.
- O2: Oxygen concentration, typically displayed in %VOL (Percentage by Volume).
نظام إنذار 5.2
The device is equipped with a quadruple alarm system to alert users to dangerous gas levels. Alarms are triggered when gas concentrations exceed pre-set low or high alarm points.

- إنذار مسموعة: A loud buzzer sound.
- إنذار مرئي: LED lights will flicker, and the screen background may change (e.g., to red).
- إنذار الاهتزاز: سيهتز الجهاز.
- وميض الشاشة: The display itself will flash to draw attention.
To acknowledge or silence an alarm, refer to the device's on-screen prompts or press the OK button.
5.3 Data Logging and Curve Drawing
The UT334F automatically stores detection data. Users can access historical data and view gas concentration trends through the curve drawing function.
- Navigate to the "Data Log" or "History" menu option using the navigation buttons.
- Select specific records to view معلومات مفصلة.
- Choose the "Curve Drawing" option to visualize gas concentration changes over time. This feature is useful for identifying patterns or intermittent gas releases.

5.4 Setting Alarm Thresholds
The device allows for customization of low and high alarm points for each gas. This feature enables users to tailor the detector's response to specific safety requirements.
- Access the "Alarm Settings" or "Thresholds" menu.
- Select the gas (EX, H2S, CO, O2) for which you want to adjust the alarm points.
- Use the navigation buttons to increase or decrease the low and high alarm values.
- Confirm your settings to save the changes.
6. الصيانة
6.1 التنظيف
يساعد التنظيف المنتظم في الحفاظ على أداء الجهاز وإطالة عمره.
- امسح الجزء الخارجي من الجهاز بقطعة قماش ناعمة، دamp قطعة قماش.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the casing أو العرض.
- Ensure the sensor inlet is free from dust and obstructions. Use a soft brush if necessary, but avoid inserting objects into the sensor opening.
6.2 العناية بالبطارية
To maximize battery life and ensure reliable operation:
- Charge the device fully before long periods of storage.
- تجنب تفريغ البطارية بالكامل بشكل متكرر.
- في حالة التخزين لفترة طويلة، اشحن البطارية إلى حوالي 50% كل بضعة أشهر.
6.3 المعايرة
Gas detectors require periodic calibration to ensure accuracy. While the device uses high-quality sensors, environmental factors and sensor aging can affect readings over time.
- Refer to the manufacturer's specific calibration schedule and procedures.
- Calibration typically involves exposing the sensors to known concentrations of gases and adjusting the device to match these values.
- It is recommended to have calibration performed by certified technicians or use approved calibration kits.
6.4 التخزين
When not in use, store the device in a cool, dry place, away from direct sunlight, extreme temperatures, and corrosive environments. Use the original packaging or a protective case if available.
7. استكشاف الأخطاء وإصلاحها
| مشكلة | السبب المحتمل | حل |
|---|---|---|
| الجهاز لا يعمل. | نفدت طاقة البطارية. | Charge the device fully using the MicroUSB cable. |
| قراءات غاز غير دقيقة. | Sensor contamination or aging; device requires calibration. | Clean the sensor inlet. Perform or arrange for professional calibration. |
| Alarm triggers frequently without apparent gas presence. | High sensitivity settings; environmental interference; sensor issue. | Check and adjust alarm thresholds. Ensure no sources of interference. If problem persists, seek technical support. |
| العرض فارغ أو متجمد. | Software error; low battery. | Attempt a hard reset (if available, consult manufacturer). Charge the device. |
| Voice prompts are not in the desired language. | إعدادات اللغة غير صحيحة. | Navigate to "System Settings" or "Language" menu to select the preferred language. |
8. المواصفات
The following table outlines the technical specifications for the UNI-T UT334F gas detector.

| المعلمة | قيمة |
|---|---|
| Gas Detection Parameters (UT334F) | |
| كشف الغاز | EX, H2S, CO, O2 |
| EX Range | (0~100)% الحد الأدنى المسموح به |
| EX Low Alarm Point | 20.0% الحد الأدنى للانبعاثات |
| EX High Alarm Point | 50.0% الحد الأدنى للانبعاثات |
| EX Resolution | 0.1% الحد الأدنى للانبعاثات |
| نطاق H2S | (0 ~ 100) جزء في المليون |
| H2S Low Alarm Point | 10.0 جزء في المليون |
| H2S High Alarm Point | 35.0 جزء في المليون |
| H2S Resolution | 0.1 جزء في المليون |
| نطاق ثاني أكسيد الكربون | (0 ~ 1000) جزء في المليون |
| CO Low Alarm Point | 50.0 جزء في المليون |
| CO High Alarm Point | 150.0 جزء في المليون |
| قرار ثاني أكسيد الكربون | 0.1 جزء في المليون |
| نطاق O2 | (0 ~ 30)٪ حجم |
| O2 Low Alarm Point | 19.5%حجم |
| O2 High Alarm Point | 23.5%حجم |
| O2 Resolution | 0.1%حجم |
| وقت الاستجابة | ≤30 ثواني |
| خطأ العرض | ≤±5%معدل الحفظ |
| فئة الحماية | IP65 |
| تعليمات | Color LCD display real-time data and system status, light, vibration, screen flashing quadruple Alarm and real voice (support Chinese and English switching) prompt |
| قوة العمل | 2500mAh rechargeable polymer battery |
| درجة حرارة التشغيل | -20 درجة مئوية ~ 50 درجة مئوية |
| رطوبة العمل | ≤95%RH without condensation |
| ضغط العمل | -30kPa ~ 200kPa |
| البعد المادي | 145 مم × 71 مم × 36 مم |
| وزن | 234 جرام |
| طريقة الكشف | انتشار |
| المواصفات العامة | |
| الشركة المصنعة | يوني تريند |
| رقم القطعة | HY-UT334F |
| أبعاد المنتج | 16.5 × 11 × 12 سم |
| رقم موديل العنصر | HY-UT334F |
| لون | متعدد الألوان |
| مادة | أكريلونيتريل بوتادين ستايرين |
| مصدر الطاقة | تعمل بالبطارية |
| واتtage | 5 واط |
| دقة القياس | ±0.1% |
| شهادة | CE, ISO 9001, RoHS, UKCA |
| المكونات المضمنة | UT334F (main unit) |
| نوع خلية البطارية | الليثيوم |
| وزن المنتج (مع التغليف) | 600 جرام |
| بلد المنشأ | الصين |
9. الضمان والدعم
For warranty information, technical support, or service inquiries, please contact your point of purchase or the official UNI-T customer service. Keep your purchase receipt as proof of purchase for warranty claims.
UNI-T official webموقع: www.uni-trend.com





