EF20 Fixed Point-Type Combustible Gas Detector is an intelligent combustible gas detector independently developed by our company. It can output 4~20mA current signals and RS485 digital signals with real-time concentration display...
Quote NowEF20 Fixed Point-Type Combustible Gas Detector is an intelligent combustible gas detector independently developed by our company. It can output 4~20mA current signals and RS485 digital signals with real-time concentration display, and supports customization for various target gases.
This detector adopts catalytic combustion sensors, featuring strong anti-interference capability, high measurement accuracy and high intelligence level. On-site monitoring and alarm functions can be activated simply via basic configuration.
Adopts advanced micro-power consumption sensor technology.
On-site gas concentration display enables field operators to grasp real-time conditions promptly.
Supports standard 4~20mA current signal output and RS485 output with MODBUS protocol.
LED indicators display working status, including normal operation, primary alarm, secondary alarm and fault alarm.
Equipped with an explosion-proof housing, applicable to a wide range of working scenarios.
| Parameter | Specification |
| Sampling Method | Natural diffusion |
| Operating Voltage | DC 24V±6V |
| Power Consumption | ≤3W |
| Operating Mode | Continuous detection |
| Status Indication | Yellow indicates fault, red indicates concentration alarm, green indicates normal operation |
| Operation Mode | Infrared remote control |
| Response Time (t90) | ≤30s (combustible gas); ≤60s (toxic gas); |
| Operating Temperature | -40℃ ~ +70℃ (combustible gas); -10℃ ~ +50℃ (toxic gas); |
| Operating Humidity | ≤95%RH (non-condensing) |
| Explosion Protection Method | Flameproof type |
| Explosion Protection Rating | Ex d ⅡC T6 Gb |
| Ingress Protection Rating | IP65 |
| Ambient Pressure | 86kPa ~ 106kPa |
| Output Signal | 4~20mA / RS485 / PowerBus two-wire / NBIOT |
| Explosion-proof Connection Thread | M20×1.5 (internal pipe thread) or G3/4 internal thread (adapter optional) |
| Cable Requirements | ≥1.5 mm²×3 shielded cable, cable outer diameter required between 6mm~9mm (4~20mA) / 1.5 mm²×4 (RS485) / 1.5 mm²×2 (PowerBus two-wire) |
| Maximum Distance Between Detector and Host | ≤1000m |
| Sensor Service Life | Three years (catalytic combustion sensor for combustible gas, five years for optical principle, two years for electrochemical toxic gas) |
| Product Dimensions | 170mm × 150mm × 85mm |
| Weight | Approx. 1.5Kg. |
