BL-CH4 Methane Detection Sensor

BLV Technology SKU: BLV-CH4
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BL-CH4 UAV Methane Detection Sensor

The application of drone-based laser methane detection systems in the oil and gas industry is becoming increasingly widespread. These systems are significantly enhancing the efficiency and accuracy of industry operations, contributing to the sector's development.


For gas detection like oil and gas pipeline inspection, refinery inspection, industrial park, landfill, BLV Tech is committed to meet the complex operation needs of customers and providing unparalleled efficiency and accuracy. Now BLV tech has launched a flagship drone payload, BL-CH4, a lightweight drone-based laser methane detection sensor. BL-CH4 adopts an integrated design, which integrates five modules: laser receiver, laser indicator light, laser emission, RGB camera and laser ranging. Its advanced sensor arrays, combined with sophisticated algorithms, quickly identify methane sources, helping to quickly spot leaks and take emergency response measures.

In gas inspection, For large area detection, BL-CH4 adopts unique automatic rotation detection. The rotation angle of different angles can be selected to cover the monitoring different sizes of area. It can realize automatic, all-round and efficient inspection.

Tunable Diode Laser Absorption Spectroscopy (TDLAS)

Superior Sensitivity

Sensitive to methane Only, contact-based and closed-path TDLAS for quantitative methane detection.

Short Response Time

Built-in laser detection module allows response to the concentration changes within 5 milliseconds.

Long Distance Support

Support to detect the methane leakage up to 300m.

Product Application Advantage

  1. 300 meters test distance
  2. real time data processing
  3. 5ms fast response
  4. Three axis enhanced stability head
  5. Accurate location of the leak point
  6. Cloud platform data is updated synchronously

Pain Points For The Traditional Detection

  • Difficult to detect low concentrations of methane leak in large or complex environments.
  • Time-consuming on manual operation and on-site sampling.
  • The covered area is limited for a handheld devices or fixed monitoring station.
  • Risk-taking to detect in a remote or hazardous areas. 

Advantages of Drone Methane Technology By BL-CH4 

  • Based on drone technology, it can fly and detect all kinds of scenarios without limitation efficiently and accurately.
  • TDLAS technology enables the system with high performance in sensitivity and quick response speed, also support the workin distance up to 300m.
  • Diversification on software supports both APP / Cloud Platform for the flight monitoring and management.

BL-CH4 UAV Methane Detection Sensor

The application of drone-based laser methane detection systems in the oil and gas industry is becoming increasingly widespread. These systems are significantly enhancing the efficiency and accuracy of industry operations, contributing to the sector's development.


For gas detection like oil and gas pipeline inspection, refinery inspection, industrial park, landfill, BLV Tech is committed to meet the complex operation needs of customers and providing unparalleled efficiency and accuracy. Now BLV tech has launched a flagship drone payload, BL-CH4, a lightweight drone-based laser methane detection sensor. BL-CH4 adopts an integrated design, which integrates five modules: laser receiver, laser indicator light, laser emission, RGB camera and laser ranging. Its advanced sensor arrays, combined with sophisticated algorithms, quickly identify methane sources, helping to quickly spot leaks and take emergency response measures.

In gas inspection, For large area detection, BL-CH4 adopts unique automatic rotation detection. The rotation angle of different angles can be selected to cover the monitoring different sizes of area. It can realize automatic, all-round and efficient inspection.

Tunable Diode Laser Absorption Spectroscopy (TDLAS)

Superior Sensitivity

Sensitive to methane Only, contact-based and closed-path TDLAS for quantitative methane detection.

Short Response Time

Built-in laser detection module allows response to the concentration changes within 5 milliseconds.

Long Distance Support

Support to detect the methane leakage up to 300m.

Product Application Advantage

  1. 300 meters test distance
  2. real time data processing
  3. 5ms fast response
  4. Three axis enhanced stability head
  5. Accurate location of the leak point
  6. Cloud platform data is updated synchronously

Pain Points For The Traditional Detection

  • Difficult to detect low concentrations of methane leak in large or complex environments.
  • Time-consuming on manual operation and on-site sampling.
  • The covered area is limited for a handheld devices or fixed monitoring station.
  • Risk-taking to detect in a remote or hazardous areas. 

Advantages of Drone Methane Technology By BL-CH4 

  • Based on drone technology, it can fly and detect all kinds of scenarios without limitation efficiently and accurately.
  • TDLAS technology enables the system with high performance in sensitivity and quick response speed, also support the workin distance up to 300m.
  • Diversification on software supports both APP / Cloud Platform for the flight monitoring and management.

BL-CH4 Specs

Model BL-CH4
Detection Target Methane and gases containing methane
Detection Method Tunable Diode Laser Absorption Spectroscopy
Gimbal Stabilization Yaw, Pitch, and Roll
Gimbal Type DJI Xport
Pitch +30° to -90°  Roll  ±135°
Working Distance Up to 300m
Laser Rangefinder Up to 1000m
Sensitivity 5ppm*m
Response Speed 5ms
Measurement Accuracy ±10% (100~50000 ppm*m) 
Coordination Function Real-time coordinate support
Route Function KMZ, KML import
Infrared Detection laser Class 3r, avoid direct laser to eyes
Sampling Frequency 500KHz
Housing Aluminum alloy
Ingress Protection IP54

DJI Matrice 350 RTK
DJI Matrice 300 RTK

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