YA-D400 Fixed Industrial Combustible Gas Detector with RS485 4-20mA Output, 205×209×84mm Size, 36-Month Sensor Life
The YA-D400 series point-type gas detectors are engineered for reliable monitoring of combustible gases in industrial environments. Featuring RS485 and 4-20mA outputs, these detectors provide continuous protection in chemical plants, petroleum facilities, metallurgical operations, and other hazardous locations where gas leaks may occur.
- Real-time gas concentration display with clear backlit screen
- Fault, high, and low alarm indicators with visual and audible alerts
- Infrared remote control for convenient operation without opening covers
- Three distinct sound and light outputs for different alarm conditions
- Zero, calibration, and test functions for maintenance
- DC4-20mA standard signal output with RS485 communication
- Three relay outputs (250V 5A) for automatic fan and solenoid valve control
- 40 high and low alarm record storage capacity
- Unit conversion capability for toxic gas measurements
| Parameter | Specification |
|---|---|
| Power Supply | 24V DC |
| Detection Range | Combustible: 0-100% LEL; Toxic: 0-1000 μmol/mol |
| Accuracy | ±5% FS (sensor dependent) |
| Response Time | Combustible: ≤30 seconds; Toxic: ≤60 seconds |
| Sensor Life | 36 months (sensor dependent) |
| Detection Method | Diffusion |
| Explosion Protection | Ex d IIC T6 Gb/Ex tD A21 IP67 T80℃ |
| Operating Temperature | Combustible: -40°C to 70°C; Toxic: -20°C to 60°C |
| Transmission Distance | ≤1200m (RS485, 2-bus, 4-20mA) |
| Dimensions | 205 × 209 × 84mm |
| Weight | 2kg |
Certified with ATEX, SIL, CE, FCC, ROHS, and ISO9001 standards. Backed by 16+ years of manufacturing expertise and comprehensive technical support.
We offer OEM/ODM services and provide online technical guidance for calibration, zero adjustment, settings configuration, and installation procedures.
We are the manufacturer with extensive experience since 2007, serving major enterprises including Sinopec, PetroChina, and China Railway Group.
1-year warranty with comprehensive after-sales technical support.
Typically 3-7 working days after payment confirmation, with expedited options available for urgent orders.
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