Introduction to the Handheld Laser Methane Detector:
The handheld laser methane detector is a novel gas detection instrument developed based on the principle of Tunable Diode Laser Absorption Spectroscopy (TDLAS). Methane gas absorbs light at specific wavelengths. According to Beer-Lambert's law, the absorption intensity is directly proportional to the methane gas concentration. By measuring the absorption intensity, the device calculates methane concentration. The laser principle remains unaffected by external temperature, humidity, or pressure, is immune to interference from other gases, and exhibits no drift over extended use.
Features of the Handheld Laser Methane Detector:
Waterproof, dustproof, explosion-proof, and shockproof. Intrinsically safe circuit design with anti-static and anti-electromagnetic interference capabilities.
Certified by national standards testing and CMC metrological instrument production license
IP66 protection rating, resistant to rain and water splashes. Built-in moisture and dust filters prevent sensor/instrument damage from humidity and particulates, suitable for high-humidity/high-dust environments
Built-in pump-assisted measurement with rapid response, sampling distance exceeding 10 meters. Specialized gas path design enables direct detection of
gas at negative or positive pressures (-0.5 to 2 kg) without affecting measurement results
2.5-inch high-definition color screen displays real-time concentration, alarms, time, temperature, humidity, storage, communication, printing,
battery level, charging status, etc. Menu interface uses high-definition simulated icons to display each menu's function name
Large-capacity data storage supports 100,000 entries, with customizable higher capacities. Supports real-time storage, scheduled storage, or storage of alarm concentration data and timestamps only. Data can be viewed locally or uploaded to a computer via USB or RS232 interface for analysis, storage, and printing using host software.
Infrared communication interface (optional), USB port, RS232 port. Optional external miniature wireless infrared printer available.
Prints: Company name, gas name, date/time, ambient temperature/humidity, concentration data, test result (pass/fail).
USB charging port compatible with computers or power banks, also compatible with mobile phone chargers. Features overcharge, over-discharge, overvoltage, short-circuit, and overheat protection. 5-level
Precision battery level display, supports USB hot-swapping, detector operates normally during charging
Features a 5500mAh high-capacity rechargeable polymer battery for extended continuous operation
Audible/visual alarms, vibration alerts, low-voltage warnings, fault notifications; multi-directional 3D alarm status display during alerts
Configurable alarm thresholds with selectable modes: low alarm, high alarm, range alarm, weighted average alarm
High-precision temperature/humidity measurement (optional), with sensor temperature compensation. Operating range: -40°C to 70°C.
Detects gases up to 800°C. Higher-temperature detection available via customization (optional high-temperature sampling cooling filter handle or high-temperature/humidity pre-treatment system)
Free unit switching. No molecular weight input required for common gases; automatically calculates and switches for special gases requiring molecular weight input.
Selectable units: PPM, mg/m³, Vol%, LEL%, PPHM, ppb, mg/L
Three display modes: Simultaneous display of five gas concentrations, large-font cyclic display of single-channel gas concentration, real-time curve. Automatic or manual cycling between channels.
Configurable display of maximum/minimum values, gas names, and historical curve charts.
Selectable Chinese/English interface (default Chinese). Clear operation prompts in simplified Chinese or English for user-friendly operation across all age groups.
Data recovery function allows selective or full restoration, eliminating concerns over accidental operation errors.
Automatic zero tracking ensures long-term stability unaffected by zero drift.
Multi-level target point calibration guarantees linearity and accuracy of measurements, simultaneously meeting national standards and local metrology bureau requirements.
Automatic detection and prevention of calibration errors, mitigating human-induced inaccuracies.
Supports real-time or scheduled monitoring (for low gas concentrations). Pump can be deactivated during non-monitoring periods to extend operational lifespan.
Records calibration logs, maintenance history, and troubleshooting solutions. Includes sensor lifespan alerts and next calibration schedule reminders.
Handheld Laser Methane Detector Technical Specifications:
Detected Gas: Methane (CH ), Optional: Temperature and Humidity Measurement
Detection Range: 0–1000 ppm, 5000 ppm, 10000 ppm, 50000 ppm, 100% LEL, 100% Vol (selectable); other ranges available upon request
Resolution: 0.01 ppm or 0.001 ppm (0–10 ppm); 0.01 ppm (0–100 ppm), 0.1 ppm (0–1000 ppm),
1ppm (0–1000 ppm and above), 0.1%LEL (0–100%LEL), 0.01%Vol or 0.001%Vol (0–99.999%Vol)
Detection Principle: Tunable Diode Laser Absorption Spectroscopy (TDLAS)
Sensor Lifespan: 5–10 years
Detection Method: Built-in pump suction, flow rate 500 mL/min
Display: 2.5-inch 320x240 high-definition color screen, 8-key operation
Detection Accuracy: ≤±2% (F.S)
Linearity: ≤±2%
Repeatability: ≤±2%
Alarm Modes: Audible/visual alarm, vibration alarm, visual alarm, audible+visual+vibration alarm, shutdown alarm
Response Time: T90 ≤ 20 seconds
Recovery Time: ≤30 seconds
Power Supply: DC 3.6V
Operating Environment: Temperature -40°C to +70°C; Relative Humidity ≤0-99%RH (Built-in filter enables operation in high humidity or high dust environments)
Sample Gas Temperature: -40°C to +70°C. Optional high-temperature sampling cooling filter handle or high-temperature/high-humidity pre-treatment system enables detection of flue gas concentrations up to 800°C
Temperature Measurement: -40°C to +120°C (optional) Accuracy: 0.5°C
Humidity Measurement: 0-100%RH (optional) Accuracy: 3%RH
Battery Capacity: 3.6VDC, 5000mAh high-capacity rechargeable polymer battery with overcharge, over-discharge, overvoltage, overheat, and short-circuit protection
Data Storage: Standard 100,000-entry capacity, customizable for larger storage. Supports on-device viewing or data export with complimentary PC software.
Storage function defaults to off, configurable to on with adjustable storage intervals.
Communication Interfaces: USB (charging/communication), RS232, infrared communication (auto-detection).
Printer: Optional external miniature wireless infrared thermal printer
Interface Language: Configurable Chinese or English, default Chinese interface
Explosion-Proof Type: Intrinsically Safe
Explosion-Proof Marking: Exia II CT6
Protection Rating: IP66, resistant to rain and water splashes, dustproof
Dimensions: 195×77×46mm (L×W×H)
Weight: 350g
Standard Accessories: Manual, Certificate of Conformity, Warranty Card, USB Charger (with data cable), Premium Aluminum Alloy Instrument Case,
CD (Host Computer Communication Software), Alligator Clips, 5 Humidity/Dust Filters
Optional Accessories: 1.2 m extendable sampling handle (standard length 1 m), temperature/humidity measurement function, high-temperature sampling cooling filter handle,
high-temperature/high-humidity pretreatment system, additional humidity/dust filters, lanyard, external mini wireless infrared printer
Applications: Petroleum, chemical, pharmaceutical, environmental protection, flue gas analysis, air treatment, and all scenarios requiring gas concentration detection
Malaysia
