1. Ultra-Compact Industrial Design for Flexible Integration

With an external dimension of just diameter 48mm × height 95mm​ (excluding pins) and a standard M20 * 1.5 external thread​ for mounting, this module is exceptionally compact and lightweight. This makes it perfectly suited for integration into space-constrained designs, such as portable H2S detector​ units and handheld gas leak detector​ tools, without compromising on robustness due to its ABS/aluminum alloy​ housing.

2. Multi-Principle, High-Performance Sensing Platform

The module supports a selectable ("Optional") measurement gas and detection principle. It is designed to professionally integrate high-quality sensors, including electrochemical (ideal for H2S gas), catalytic combustion, infrared, thermal conductivity, and PID types. This flexibility allows it to serve as the sensing core for a precise hydrogen sulfide monitor​ or other specific gas sensor detector​ applications.

3. High Accuracy, Rapid Response, and Long-Term Stability

Engineered for dependable performance, the module guarantees a sampling accuracy of ±3% F.S.​ and repeatability of ±1% F.S.​ It delivers a fast response time (T90) of <30 seconds​ with a short 10-second preheat time, ensuring quick and reliable threat detection. Its exceptional long-term drift of ≤±1% F.S. per year​ ensures stable readings over its 2~3 year service life, which is critical for maintaining the reliability of any H2S alarm​ system.

4. Intelligent Features for Simplified Operation & Maintenance

The module simplifies setup and upkeep. It features factory-precise calibration​ for true plug-and-play operation and includes a data recovery function​ to safeguard against operational errors. Users can perform zero-point fine-tuning​ and connect directly to a computer for self-calibration, facilitating easy maintenance. Its output interface combines RS-485 digital communication with a selectable 4~20mA analog current, providing maximum flexibility for system debugging and integration.

5. Low-Power, Rugged Construction for Demanding Applications

Consuming a low operating current of ≤50mA​ from a 12-24V DC​ source, it is highly suitable for portable, battery-powered devices like portable H2S detector​ units. It operates reliably in harsh conditions, within a temperature range of -20°C to 50°C​ and humidity of 0-95% RH (non-condensing), making it an excellent choice for environmental monitoring, drone-based atmospheric sampling, and fixed industrial hydrogen sulfide detection​ systems.

FAQ:

1. Q: Can this module be used as the core sensor for a portable H2S gas detector?

A:​ Absolutely. Its compact size (Φ48mm x 95mm), low power consumption (≤50mA), and robust construction make it an ideal, high-performance sensing core for building reliable and durable portable H2S detector​ tools.

2. Q: What level of accuracy can I expect for hydrogen sulfide monitoring with this module?

A:​ When configured with an electrochemical sensor for H2S gas, the module delivers highly accurate and stable readings, with a sampling accuracy of ±3% F.S.​ and minimal long-term drift (≤±1% F.S./year), ensuring your hydrogen sulfide gas detector​ provides trustworthy data over time.

3. Q: How does the output configuration aid in building a complete gas detector system?

A:​ The dual RS-485 + 4~20mA output interface​ offers maximum integration flexibility. The 4~20mA signal can connect directly to PLCs or controllers, while the RS-485 allows for networked communication with multiple sensors, simplifying the design of complex gas detector​ systems.