Industrial Combustible Gas Detector China Suppliers and Factory

Leading China factory and suppliers of industrial point type combustible gas detectors. High-precision LEL monitoring with 4-20mA and RS485 signals, explosion-proof design, and real-time alerts to ensure facility safety.

SupplierJiangsu Jihua Electronic Technology Co., Ltdwww.jhdetect.com

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About this product

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The Industrial and Commercial Point Type Combustible Gas Detector is a high-precision safety solution engineered for the rigorous demands of hazardous environments. Utilizing advanced catalytic combustion technology, this instrument provides real-time monitoring of combustible gases, ensuring immediate detection of leakages to prevent industrial accidents and safeguard personnel and property.

Designed for seamless integration into industrial safety networks, the device combines imported anti-poisoning sensors with intelligent digital processing. Its robust explosion-proof construction and dual-communication capabilities make it an essential component for environmental monitoring systems in chemical plants, warehouses, and energy facilities.

Detailed Parameters

Working Principle	Catalytic combustion type	Measuring Range	3~100%LEL
Accuracy	±3%LEL (≤50%LEL) / ±5%LEL (>50%LEL)	Zero Drift	≤5%LEL
Response Time (t90)	≤30 seconds	Operating Temp.	-40℃ ~ 70℃
Operating Voltage	24V DC	Signal Output	4~20mA / RS485 (Modbus RTU)
Explosion-proof	Flameproof type (Ex d IIC T6 Gb)	Protection Grade	IP66

Key Advantages

High Stability

Equipped with imported anti-poisoning sensors and digital processing for superior stability and interference resistance.

Rapid Response

Achieves a T90 response time of ≤30 seconds, ensuring critical alerts are triggered instantly during gas leaks.

Smart Diagnostics

Automatic identification of over-concentration, sensor short circuits, and open-circuit faults for rapid troubleshooting.

Integrated Display

Features a color digital module for real-time on-site concentration readings and system status monitoring.

Easy Maintenance

Plug-in sensor design and infrared remote control allow for efficient on-site calibration and sensor replacement.

Dual Communication

Simultaneous support for 4-20mA and RS485 Modbus RTU ensures compatibility with various PLC and DCS systems.

Product Gallery

Management Platforms

Real-time Monitoring

Continuous tracking of gas concentrations across multiple point-type detectors in one centralized dashboard.

Remote Calibration

Adjust sensor parameters and zero-point settings via infrared remote control without opening the housing.

Alarm Management

Configurable alarm thresholds for low, medium, and high concentrations with instant notification triggers.

Fault Diagnostics

Immediate alerts for sensor failure, short circuits, or open circuits to minimize system downtime.

Data Logging

Historical data storage for compliance reporting and analyzing gas concentration trends over time.

System Integration

Seamless connection to Modbus RTU networks for full synchronization with industrial control rooms.

Investment Return Comparison

Feature	Standard Detectors	Our Advanced Solution
Sensor Lifespan	Standard catalysts	Anti-poisoning extended life
Maintenance Cost	High (Manual Calib)	Low (Remote/Plug-in)
Reliability	Basic monitoring	Intelligent self-diagnosis
Integration	Single output	Dual RS485 + 4-20mA
Risk Mitigation	Delayed response	Rapid T90 ≤ 30s response

Frequently Asked Questions

Q: What is the difference between LEL and percentage volume?

LEL (Lower Explosive Limit) is the minimum concentration of a gas in air that can ignite. Our detector measures from 3% to 100% of this limit, providing early warning long before a dangerous concentration is reached.

Q: How does the anti-poisoning sensor benefit industrial users?

In many industrial environments, silicone or sulfur compounds can "poison" standard catalytic sensors, causing them to fail. Our imported anti-poisoning sensors maintain accuracy and longevity in harsh chemical conditions.

Q: Can this detector be integrated into an existing PLC system?

Yes, the device supports both a 4-20mA current loop for analog integration and RS485 Modbus RTU for digital communication, making it compatible with almost all industrial PLCs and DCS platforms.

Q: What explosion-proof certifications does this unit carry?

The detector is designed as a flameproof type with markings Ex d IIC T6 Gb and Ex tD A21 IP66 T80℃, ensuring safe operation in high-risk combustible environments.

Q: How is the on-site calibration performed?

The device features an infrared remote control design, allowing technicians to perform calibrations from a safe distance without having to open the explosion-proof housing.

Q: What is the typical maintenance cycle for this gas detector?

While calibration frequency depends on the environment, the plug-in sensor design makes periodic maintenance highly efficient, significantly reducing the time required for sensor replacement and testing.