EA900-EX Online Combustible Gas Detector
Contact Info
- Room 503, Building 17, Huafeng International Intelligent Manufacturing City, Wanle Road, Shajing Sub-district, Bao'an District, Shenzhen, 518000
- 池工
- 17796309110
- 17796309110@163.com
The online gas detector from Qi'an Technology uses imported intelligent gas sensors, making it a high-performance intelligent detection instrument designed for continuous online monitoring of combustible gases.
The detector features an overall flameproof structure, with high sensitivity and accuracy. Through a gas alarm controller and monitoring management software, real-time concentration display can be achieved on a computer. It can also transmit real-time monitoring data and alarm status to the safety control center via an optional wireless module. This detector is widely applicable to industries such as petroleum and petrochemical, metallurgy, environmental protection, gas, firefighting, municipal engineering, chemical industry, shipbuilding, electric power, process control, sewage treatment, and emergency rescue monitoring.
Key Features:
◆ Imported high-performance sensor, with high measurement accuracy, good repeatability, and long service life;
◆ Equipped with an independent 16-bit AD chip and 4-layer circuit board design, offering stronger anti-interference capability for weak signals;
◆ Dashboard-style display interface, with an aesthetic and user-friendly design;
◆ Multiple unit options: mg/m3, ppm, VOL, LEL;
◆ Embedded 32-bit ultra-low-power processor, paired with a unique signal processing algorithm, ensuring fast response and stability;
◆ Automatic protection function against high-concentration gas impacts, with a reset-to-factory-settings function to prevent misoperations;
◆ The instrument is equipped with an infrared remote controller, enabling easy operation without opening the cover;
◆ Optional output modes: 3-wire 4～20mA, RS485 signal, and relay output;
◆ Two cable entry ports, facilitating on-site installation;
◆ Superior mechanical design: The gas chamber is made of military-grade high-strength aluminum alloy, which is wear-resistant and corrosion-resistant, suitable for complex and harsh industrial environments. The scientifically designed gas chamber ensures the accuracy of real-time sensor monitoring;
◆ Explosion-proof grade: Exd II CT6, certified by the National Center for Explosion-proof Electrical Inspection
Technical Parameters
| Product Name | Online Combustible Gas Detector |
| Product Model | EA900-EX |
| Detected Gas | Combustible Gas |
| Detection Principle | Catalytic Combustion |
| Measurement Range | 0-100%LEL |
| Resolution | 1%LEL |
| Sampling Method | Free Diffusion - Online continuous detection via free diffusion; |
| Installation Method | Wall-mounted; Pipe-mounted (including pipe-clamping type and insertion type; external thread for pipe mounting: M45X1.5mm; optional pipe adapter screw joint, weldable); |
| Indication Error | ≤±3% FS |
| Repeatability | ≤±1% |
| Zero Drift | ≤±1% (FS/year) |
| Response Time | ≤20 seconds (T90); higher requirements subject to sensor performance |
| Recovery Time | ≤10 seconds; higher requirements subject to sensor performance |
| Power Supply | 12～30VDC |
| Power Consumption | ≤2.5 W (DC24V) |
| Ambient Pressure | 80kPa～120kPa |
| Ambient Temperature | -20℃～+60℃ (typical value); -40℃～+80℃ (limit value) For environments with higher temperature and humidity, our company's pre-positioned pre-treatment gas monitoring system is available as an option |
| Ambient Humidity | 10%～95%RH (non-condensing) |
| Main Body Material | ① Housing: ADC12 aluminum alloy with Teflon paint, wear-resistant and corrosion-resistant (316 stainless steel housing is optional for complex harsh environments) ② Gas Chamber: Made of high-strength, wear-resistant, and corrosion-resistant aluminum alloy, sturdy and durable, with external thread M45*1.5 |
| Output Signals | ① 3-wire 4-20mA current signal output, compatible with various alarm controllers, PLC, DCS, and other control systems; ② RS-485 digital signal output; data can be viewed and stored on a computer via an RS232 adapter card; ③ 2 sets of relay high/low level alarm switch outputs: passive contacts, rated at 30V 1A, 125VAC 0.5A; ④ Voltage signal output: 0-5V or 0-10V signal output can be set by the user (optional) |
| Signal Transmission Method | ① 3-core (4-core) shielded cable transmission: maximum transmission distance of 1000 to 2000 meters (single-core 1mm² shielded cable) |
| Alarm Method | Audible and visual alarm; optional audible and visual alarm, alarm sound level: < 90 decibels |
| Direct Reading | Measured value, maximum value, minimum value |
| Data Download | Supports RS485 serial port measurement data download |
| Calibration | Calibration function for target points from level 2 to level 4 and above; calibration values can be set, with one-click zero adjustment |
| Explosion-proof Electrical Connection Thread | ① NPT3/4 internal thread adapter (1/2NPT, G3/4, G1/2 internal thread adapters are optional) ② Explosion-proof cable gland (optional, with explosion-proof certification) |
| Explosion-proof Mark | Ex d II CT6 Gb |
| Protection Grade | IP66 |
| Dimensions | 180mm*140mm*92mm (height*width*depth) |
| Weight | Approx. 1.6Kg (aluminum alloy housing) |
| Execution Standards | GB15322.1-2003, GB3836.1-2010, GB3836.2-2010, GB3836.4-2010 |
| Quality Assurance | 1-year warranty period, free repairs during the warranty period |
Standard Configuration of Online Gas Detector:
| Item Name | Quantity |
| Online Gas Detector Main Unit | 1 |
| User Manual | 1 |
| Packaging Box | 1 |
| Certificate of Conformity & Warranty Card | 1 |
| Instruments & Meters/Other Instruments/Gas Alarms & Detectors | |
