Industrial hydrogen sulfide monitor H2S gas detector with audible alarm for wastewater treatment
Brand Yongan Electronics
Product origin Wuxi, Jiangsu Province
Delivery time 1-10piece(5-7 days) ;20~100piece(10-15 days)
Supply capacity Annual Production Volume 10,000+
The Industrial Fixed H2S Detector is a high-precision safety monitoring terminal engineered for the continuous detection of hydrogen sulfide in hazardous environments. Utilizing a specialized electrochemical sensor and a robust IP66 explosion-proof housing, this reliable monitor provides accurate real-time tracking and seamless integration into automated air quality monitor systems via 4-20mA and dual relay outputs.
Product Application:
1、Sewage & Wastewater Treatment:
Organic matter decomposition in treatment tanks produces lethal hydrogen sulfide concentrations; our fixed H2S detector monitors these levels to automate ventilation and prevent fatal exposure for maintenance personnel.
2、Oil & Gas Refining:
Desulfurization and extraction processes involve high-pressure toxic gas risks; the industrial sensor tracks leaks to trigger immediate emergency shutdowns through integrated relay linkages, ensuring plant-wide safety.
3、Pulp & Paper Manufacturing:
High volumes of H2S are generated during chemical pulping; this explosion-proof monitor provides continuous surveillance to maintain regulatory compliance and ensure a safe breathable atmosphere for workers.
4、Chemical Processing Facilities:
Hazardous reactions can lead to accidental toxic gas emissions; the electrochemical alarm sends real-time data to control systems, activating sirens and exhaust fans the moment thresholds are exceeded.
Product Specification Sheet:
Item | Parameter |
Product Name | H2S Gas Detector |
Detection Range | 0-20ppm / 50ppm / 100ppm / 200ppm |
Measuring Principle | Electrochemical |
Signal Output | 4-20mA + 2 Relay |
Power Supply | 24VDC |
Power Consumption | 3W |
Alarm Type | Sound and Light Alarm |
Display | High-brightness LED Display |
Maintenance | Infrared Remote Control / Plug-and-play Sensor |
Installation Method | Wall-mounted / Ceiling / Pole |
Main Material | Die-cast Aluminum |
Dimensions | 140mm × 155mm × 75mm |
Product Weight | 2kg |
Operating Temperature | -10°C ~ 55°C (Following Fig 1) |
Explosion-proof Level | Ex db IIC T6 Gb |
Protection Level | IP66 |
Certificate | ATEX / CE / CNEX / ISO9001 |
Product advantages:
1、Specialized Electrochemical Sensor:
Equipped with a high-selectivity sensor module that provides rapid response times and high accuracy for hydrogen sulfide detection without cross-interference.
2、Modular Plug-and-Play Design:
Features a hot-swappable sensor structure that allows for effortless on-site maintenance and replacement, significantly reducing operational downtime and service costs.
3、Rugged ATEX Certified Housing:
Built with a durable die-cast aluminum enclosure and rated at IP66, this explosion-proof equipment is designed to survive corrosive atmospheres and extreme industrial weather.
4、Smart Remote Calibration:
Supports safe infrared remote control operation, enabling personnel to adjust parameters and perform zero-calibration without opening the detector cover in hazardous zones.
5、Flexible System Connectivity:
Provides standard 4-20mA output and dual relays, facilitating easy connection to PLC/DCS master controllers for automated alarm management and device linkage.
Enterprise advantages
Company Introduction:

Wuxi Yong'an Electronic Technology Co., Ltd., established in 2011 and headquartered in Wuxi, China, is a high-tech enterprise integrating design, R&D, production, sales, and service. We have been deeply involved in the fields of safety monitoring equipment, industrial instruments, and industrial environment for 15 years. Adhering to the concept that "science and technology are the primary productive forces," we are committed to providing global customers with high-quality products and services, offering one-stop solutions. We serve over 200 international clients in 30 countries. We have a 1000-square-meter production base, a professional team of 100 people, and strictly implement the ISO9001 quality management system. From pre-sales consultation and sample confirmation to after-sales follow-up, we provide dedicated customer service to ensure worry-free procurement.
Certificate:

FQA:
Q1: What measurement ranges are available for the H2S monitor?
To suit different safety standards, the electrochemical sensor can be configured for 0-20ppm, 0-50ppm, 0-100ppm, or 0-200ppm detection ranges.
Q2: How do I maintain the hydrogen sulfide detector in corrosive environments?
Our fixed gas detector features a plug-and-play sensor module and an IP66 aluminum housing, allowing for quick sensor swaps while protecting internal circuits from corrosion.
Q3: Does the device provide local alerts during a gas leak?
Yes, the H2S warning device is equipped with an integrated high-brightness LED display and a built-in sound-light alarm for immediate on-site notification.
Q4: What certifications does the toxic gas detector hold?
This industrial-grade monitor is fully certified under ATEX, CE, and CNEX standards, ensuring its suitability for explosive and hazardous atmospheres worldwide.
Q5: Can the detection transmitter be integrated with my factory's PLC?
Absolutely. The high-precision monitor provides standard 4-20mA analog signals and dual relay outputs for seamless communication with PLC, DCS, or SCADA systems.
Q6: Is it possible to calibrate the gas sensor without breaking the seal?
Yes, the explosion-proof monitor supports infrared remote control, enabling safe configuration and calibration in hazardous zones without opening the enclosure.
Q7: What is the expected lifespan of the hydrogen sulfide sensor?
Utilizing premium electrochemical technology, the sensor provides long-term stability and high sensitivity, typically lasting 2-3 years depending on the operating environment.
Q8: What installation accessories are included for site deployment?
The gas detection terminal supports versatile mounting options including wall-mounted, pipe-mounted, and pole-mounted configurations to fit various industrial infrastructures.




