A flammable gas detector is a fixed gas detection device used to monitor combustible gas leakage in industrial and commercial environments. Its main purpose is to detect dangerous gas concentration before the gas reaches an explosive level, giving operators enough time to take safety action.
In many industrial facilities, flammable gases may be used as fuel, refrigerant, process gas, storage gas or by-product. If these gases leak from pipelines, cylinders, valves, compressors, tanks or equipment connections, they may create fire or explosion risks. A reliable flammable gas detector helps monitor the gas concentration continuously and provides alarm signals when abnormal gas concentration is detected.
ANWETECH AT-EG01 is designed for fixed gas leakage monitoring. According to the target gas, the detector can be equipped with corresponding sensor modules to monitor specific gases in the surrounding atmosphere. The target gas, detection range and alarm setpoints should be selected according to the product nameplate and project requirement.
A flammable gas detector can be configured for different combustible gases depending on the sensor type and application.
Common flammable gases include:
LPG
Methane
Natural gas
Propane
Butane
Hydrogen
Gasoline vapor
Solvent vapor
Alcohol vapor
Other combustible industrial gases
For example, an LPG gas detector is used for LPG leakage monitoring in gas cylinder rooms, LPG storage areas, boiler rooms and gas supply systems. A methane gas detector is commonly used for natural gas leakage monitoring. A hydrogen gas detector is used in hydrogen storage, battery charging rooms, fuel cell areas or industrial hydrogen applications.
The ANWETECH AT-EG01 platform can support different detection principles according to the target gas, including catalytic combustion, infrared, semiconductor and PID sensor options. This allows the detector to be configured for different industrial gas detection applications.
Flammable gas leakage is dangerous because the gas may mix with air and form an explosive atmosphere. When the gas concentration reaches a dangerous level and meets an ignition source, it may cause fire, explosion, equipment damage or injury to workers.
A flammable gas detector helps reduce this risk by providing early warning.
The detector can continuously monitor gas concentration at key risk points. When the gas concentration reaches the preset alarm level, the system can provide local alarm indication and transmit signals to a gas control panel, PLC, ventilation system or alarm device.
For industrial safety, this is important because operators need to know about gas leakage before it becomes a serious accident.
Flammable gas detectors are widely used in industrial and commercial facilities where combustible gases may be present.
Typical application areas include:
LPG cylinder rooms
Gas storage areas
Gas filling stations
Gas manifold rooms
Boiler rooms
Generator rooms
Fuel gas pipeline areas
Chemical plants
Paint workshops
Solvent storage rooms
Oil and gas facilities
Hydrogen storage areas
Battery charging rooms
Industrial kitchens
Factory gas supply systems
Hazardous industrial areas
In these locations, gas leakage may occur around cylinders, valves, pipelines, flanges, compressors, burners, manifolds, tanks or equipment connection points. The detector should be installed close to the possible leakage source to provide fast response.
Correct installation position is very important for gas detection performance. A detector installed in the wrong position may delay alarm response even if the detector itself is working normally.
According to the installation logic of ANWETECH AT-EG01, the detector should be installed where gas leakage is likely to occur. The mounting height should be determined by the density of the target gas relative to air.
For gases heavier than air, such as LPG, propane, butane and gasoline vapor, the detector should normally be installed near the leakage source at a low level, around 0.3 to 0.6 meters above the ground. The sensor element should face downward.
For gases lighter than air, such as methane and hydrogen, the detector should normally be installed near the leakage source in the upper area, around 0.5 to 2 meters above the leakage source. The sensor element should also face downward.
This installation principle helps the detector monitor the area where leaked gas is most likely to accumulate.
When installing a flammable gas detector, engineers should consider both gas behavior and site conditions.
The installation location should be:
Close to possible gas leakage points
Free from strong impact
Free from strong vibration
Away from strong electromagnetic interference
Convenient for maintenance and calibration
Provided with enough clearance from surrounding pipes and equipment
Suitable for stable wiring and signal transmission
For industrial projects, the detector should not be installed only for appearance or convenience. It should be installed based on risk points, gas density, airflow direction and maintenance access.
A flammable gas detector is not only a local alarm device. In many industrial projects, it is part of a complete gas detection and safety control system.
ANWETECH AT-EG01 supports multiple output methods:
4-20mA analog signal output
RS485 Modbus RTU communication
Passive relay contact output
Two-level alarm output
The 4-20mA signal can be connected to a gas control panel, PLC, DCS or industrial monitoring system. RS485 Modbus RTU communication is suitable for digital communication and multi-point monitoring. The passive relay output can be used for alarm linkage according to the project design.
When gas concentration reaches the preset alarm level, the detector can send signals to the gas control panel or other control equipment. The system may then activate sounder beacon alarms, ventilation fans, solenoid valves or emergency control signals.
The ANWETECH AT-EG01 is suitable for industrial fixed gas detection applications.
Main features include:
Real-time gas concentration display
Current alarm status indication
High-resolution color screen with menu interface
Multi-point calibration for improved accuracy and linearity
4-20mA standard analog output
RS485 Modbus RTU communication
Passive relay contact output
Two-level alarm output
Remote control and configuration support
Modular design for easy wiring and maintenance
One-button factory reset and data backup function
Main technical specifications include:
Power Supply: DC 24V
Housing Material: Die-cast aluminum
Conduit Connection: M20 × 1.5 internal thread
Explosion-proof Rating: Ex d IIC T6
Ingress Protection: IP66
Output Signal: 4-20mA, RS485 Modbus RTU, passive relay contact
Relay Contact Capacity: Max. 250VAC, 2A
Operating Temperature: -40°C to +70°C
Relative Humidity: 10% to 93% RH, non-condensing
Sensor Life: Typically 2 to 3 years in clean air
These features make the detector suitable for gas leakage monitoring in demanding industrial environments.
Flammable gas detectors are safety devices, so regular maintenance is necessary.
The sensor should be inspected and calibrated regularly to maintain reliable measurement accuracy. In normal conditions, the sensor life is typically 2 to 3 years, but the actual service life may be affected by gas exposure, humidity, dust, contamination and working environment.
To ensure stable operation, the detector should not be exposed to high concentrations of gas for a long time. Frequent power cycling should also be avoided because it may affect the stability of the sensing components.
For reliable performance, regular inspection and calibration should be included in the plant safety maintenance plan.
