TDLAS methane sensor Gasboard-2520

for leak detectionmonitoringRS-485

Product Overview
Cubic Gasboard-2520 is a high-performance methane gas sensor based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology.

By detecting the absorption of laser light at specific wavelengths, the sensor enables highly selective and accurate methane measurement. With a high-performance detector and special processing gas chamber, Gasboard-2520 delivers high accuracy of ± 1 ppm + 2% reading with a minimum detection limit of 1ppm and a resolution of 0.1ppm.

Due to the laser-based principle, Gasboard-2520 delivers long-term stability and offers strong resistance to cross-interference from background gases, ensuring reliable performance in complex gas environments. It also features fast response to capture minor gas leakage.

The optimized temperature compensation algorithm effectively minimizes the influence of ambient temperature variations, allowing the sensor to operate stably under harsh conditions. In addition, the measurement range can be flexibly expanded through optical path optimization and configuration adjustment, enabling the sensor to adapt to different concentration levels and application requirements.

Gasboard-2520 has low power consumption design and a long lifespan of more than 10 years. It also supports optional TTL/RS233/RS485 communication interfaces, enabling convenient calibration and configuration. With the modularized form, Gasboard-2520 can be widely deployed in fixed, mobile, and online gas monitoring solutions, making it suitable for a wide range of industrial, energy, and environmental monitoring applications.


Features

• TDLAS technology
• High accuracy ± 1 ppm + 2% reading, high resolution of 0.1ppm, low detection limit of 1ppm
• Long-term stability
• High sensitivity, superior anti-cross interference
• Fast response
• Low power consumption design
• Long lifespan over 10 years
• Optional TTL/RS233/RS485 communication interface
• Modular structure, easy for integration

Specifications

• Model: Gasboard-2520-CH4; Gasboard-2520-CH4-P
• Target gas: Methane (CH4)
• Working principle: Tunable Diode Laser Absorption Spectroscopy (TDLAS)
• Sampling method: Diffusion; Air pump
• Measurement range: 0~100 ppm
• Accuracy: ±(1 ppm+2%reading)@0℃~40℃, (2ppm+2%reading)@-20℃~0℃ &40℃~60℃
• Resolution: 0.1 ppm
• Response time: < 30s
• Data output frequency: 1 Hz
• Detection limit: 1 ppm
• Working temperature: -2060℃
• Working humidity: 0~98%RH (non-condensing)
• Working voltage: 12V±10%
• Average working current: ≤300mA
• Output: UART TTL3.3V (RS485/RS232 optional)
• Storage condition: -40+85℃;0~98%RH (non-condensing)
• Dimension: 278mm*70mm*70mm (L*W*H); 278mm*90mm*70mm (L*W*H)