FNIRSI GD-02 Portable Combustible Gas Detector is a professional-grade color screen gas monitoring device designed for accurate detection of methane, propane, and isobutane in residential, industrial, and commercial environments. This advanced gas detector features a 2.0-inch full-color TFT display, real-time concentration monitoring, temperature and humidity display, and high-speed curve analysis for visual tracking of gas changes.

With a wide methane detection range of 0–50000ppm and 1ppm / 1% LEL resolution, the GD-02 ensures precise and reliable leak detection. The 36cm flexible probe allows safe inspection in narrow, deep, or hard-to-reach areas such as pipelines, cabinets, valves, and enclosed spaces. Built with a fast-response sensor, triple alarm system, data hold, alarm recording, and USB Type-C firmware upgrade support, this portable gas detector delivers stable performance for over 3 years. Its rugged design, electromagnetic interference resistance, and wide operating temperature range make it ideal for gas inspection, safety maintenance, HVAC work, kitchens, factories, workshops, and emergency response applications in Bangladesh.

Features:

• 2.0-inch full-color TFT display showing real-time gas concentration, temperature, and humidity

• Adjustable screen brightness with day and night UI modes

• Curve analysis with 0.5 second refresh rate for real-time trend visualization

• Multi-gas detection for methane, propane, and isobutane

• Wide methane detection range from 0 to 50000 ppm

• High resolution 1 ppm / 1% LEL for precise leak identification

• 36 cm flexible probe for detecting gas in narrow, deep, or inaccessible areas

• Triple alarm system including buzzer, vibration, and visual indicator

• Alarm record storage supporting up to 30 historical alarm logs

• Fast response time under 5 seconds (T90) for quick hazard detection

• Fast recovery time under 10 seconds (T10)

• Long-life gas sensor with more than 3 years of stable operation

• Resistant to electromagnetic interference for reliable industrial use

• Operates in a wide temperature range from -10℃ to 55℃

• Built-in flashlight for inspection in dark or emergency environments

• Lightweight portable body weighing approximately 296g

• Data hold function for recording and reviewing measurements

• USB Type-C firmware upgrade support for performance optimization

• Quick startup, fast zeroing, and stable long-term accuracy

• Designed for safety inspections, gas leakage detection, maintenance, and monitoring

How to Use

• Power on the device and allow warm-up for approximately 15–16 seconds

• Ensure the probe is clean and free from moisture or contaminants

• Select the detection area and insert the flexible probe near suspected gas sources

• Observe real-time gas concentration, temperature, and humidity on the screen

• Use curve mode to monitor gas concentration trends over time

• Set alarm thresholds and monitor buzzer, vibration, and indicator alerts

• Use data hold to freeze readings for recording or inspection

• Review saved alarm records when needed

• Use the built-in flashlight in low-light environments

• Recharge the device using the Type-C charging cable

• Update firmware via USB Type-C when new performance updates are available

• Store the device in the provided case after use

Applications

• Methane gas leak detection

• Propane and isobutane safety monitoring

• Home kitchen and LPG safety checks

• Gas pipeline inspection

• HVAC system maintenance

• Industrial and factory safety inspections

• Workshop and laboratory gas monitoring

• Utility maintenance and service checks

• Emergency response and safety audits

• Confined space and hard-to-reach area inspection

Specifications:

• Model: GD-02

• Screen: 2.0-inch full-color TFT display

• Detectable gases: Methane, Propane, Isobutane

• Measurement range (methane): 0–50000 ppm

• Measurement range (%LEL): 0–100

• Resolution: 1 ppm / 1% LEL

• Sampling time: approximately 0.5 seconds

• Warm-up time: approximately 15–16 seconds

• Response time (T90): less than 5 seconds

• Recovery time (T10): less than 10 seconds

• Operating temperature: -10℃ to 55℃

• Sensor service life: more than 3 years

• Size: approximately 63 × 28 × 139 (+360) mm

• Weight: approximately 296 g

• Languages supported: English, Simplified Chinese

• Firmware upgrade: USB Type-C supported

Package Content

• GD-02 Gas Detector Host × 1

• Type-C Charging Cable × 1

• Storage Case × 1

• User Manual × 1

• Packaging Box × 1

Safety Precautions and Usage Warnings

• Avoid exposure to volatile silicon compounds such as adhesives, silicone, or hairspray

• Do not expose the sensor to corrosive gases like H2S, SOx, Cl2, or HCl

• Avoid contact with alkalis, alkali metal salts, or halogen substances

• Do not allow liquid or moisture to enter the sensor

• Prevent ice formation on the sensor surface

• Do not apply voltage beyond specified limits

• Avoid long-term exposure to very high gas concentrations

• Do not spray lighter gas or chemicals directly onto the sensor

• Avoid extreme humidity, pollution, or temperature for prolonged periods

• Prevent excessive vibration or strong impact

• Do not disassemble or modify the sensor or internal components

• Keep ventilation openings clean and unobstructed

• Recovery time increases after prolonged overrange exposure

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