OKet's flammable gas detection and alarm system includes wired and wireless versions.
The system has two parts: the flammable gas detector (wired or wireless) and the alarm controller (wired or wireless). The detector uses NDlR technology to detect flammable gases like gasoline vapor and hydrocarbons. When gas levels reach the set alarm threshold, it triggers an alarm and sends a signal to the alarm controller and control platform. This allows managers to monitor all sites in real time from one place.

1. Complies with national standards and is applicable to multiple scenarios.
2. High range and long service life.
The flammable gas detector is based on the non-dispersive infrared absorption principle, with no loss during the detection process and stable status.
3. Friendly display and acousto-optic warning.
Real-time display of flammable gas concentration, multi-level alarm status, and equipped with acousto-optic alarm function.
4. Fault self-inspection, safe and reliable.
Supporting self-inspection of fault status, including power failure, circuit failure, etc.
5. Diverse communication, real-time and efficient.
The wired flammable gas detector can support RS485/4-20mA/relay communication methods, and the wireless flammable gas detector transmits signals via LoRa, the alarm controller reserves a communication interface, supports uploading of alarm information, and can be used in interlock with other monitoring and early-warning systems.
6. Flexible installation, simple and easy to use.
Supports multiple installation methods. The wireless flammable gas detector can achieve wireless communication without being restricted by on-site wiring.
Technical parameters of Flammable Gas Alarm Controller |
Technical Specifications | LM-G1 Flammable Gas Alarm Controller | LM-G2 Flammable Gas Alarm Controller |
Detector Input Signal | 4-20mA or RS485 | Wireless (LoRa) |
Communication Method | RS485 | RS485 |
Maximum Number of Detectors Supported | Standard configuration: 24 units, maximum of 40 units | Standard configuration: 24 units, maximum of 64 units (Wireless) |
Operating Voltage | 220VAC±10% | 220VAC±10% |
Dimensions | 345mm*410mm*183mm | 240mm*350mm*134mm |
Operating Ambient Temperature | -10°C~45°C | -10°C~45°C |
Storage Ambient Temperature | -30°C~55°C | -30°C~55°C |
Relative Humidity | <95%RH | <95%RH |
Power Consumption | 24VDC,15W | 24VDC,15W |
Standby Power Supply | 24V 7Ah, Lead-acid batter | 24V 1.3Ah, Lead-acid batter |
Response Time | Alarm response time <10s, Fault response time <40s | Alarm response time <2s, Fault response time <20s |
Technical Parameters of Flammable Gas Detector |
Technical Specifications | ET01 Flammable Gas Detector | GT-ET01 Flammable Gas Detector (Wireless- Universal Type) | BTYQ-ET01 Flammable Gas Detector(Wireless-Magnetic) |
Operating Temperature | -40°C ~70°C | -40°C ~70°C | -40°C ~70°C |
Measurement Range | (0~100)%LEL | (0~100)%LEL | (0~100)%LEL |
Communication MethodResolution | RS485/4-20mA/Relay | Wireless (LoRa) | LoRa |
Resolution | 1%LEL | 1%LEL | 1%LEL |
High Limit Alarm | 50%LEL | 50%LEL | 50%LEL |
Low Limit Alarm | (5~25)%LEL(adjustable) | (5~25)%LEL(adjustable) | (5~25)%LEL(adjustable) |
Measurement Accuracy | ±3%F.S. | ±3%F.S. | ±3%F.S. |
Response Time | ≤30s(T90) | ≤30s(T90) | ≤15s(T90) |
Protection Level | IP66 | IP65 | IP68 |
Explosion-proof Type | Explosion-proof Type | Intrinsically Safe Type | Intrinsically Safe Type |
Explosion-proof | Ex d IIC T6 Gb | Ex ib IIC T6 Gb | Ex ia IIC T4 Ga |
Battery and Charging Frequency | 24V power supply | Disposable lithium battery /Rechargeable lithium battery (can last 6-12 months on a single charge) | Powered by disposable lithium batteries, with a lifespan of 3-5 years |
Common Detectable Gases | Gasoline, isobutane, propane, alcohols, n-butane, ethane, methane, natural gas, etc. |
|