YA-D400 Fixed Gas Alarm Detector - 24V Industrial Combustible & Toxic Gas Monitor with 205×209×84mm Size
The YA-D400 series point type gas detectors are industrial-grade monitoring devices designed for hazardous environments where combustible or toxic gases may leak. These detectors are widely deployed in chemical plants, petroleum facilities, metallurgical operations, liquefied gas stations, painting operations, and gas transmission systems.
The YA-D400 series features wall-mounted installation (with optional tube, scaffolding, or ceiling mounting) and integrates seamlessly with YA-K series gas alarm controllers to create comprehensive industrial gas monitoring systems. Using advanced ARM microprocessor technology, these detectors provide reliable data processing and transmission capabilities.
- Real-time gas concentration display with large, clear backlit screen
- Fault, low, and high alarm indicators with red backlight activation
- Infrared remote control operation for convenient configuration
- Three distinct sound and light outputs for different alarm conditions
- Zero, calibration, and test functions for maintenance
- DC4-20mA standard signal output for system integration
- Multiple communication protocols: RS485, two buses, LoRa
- Three relay outputs (250V 5A) for automatic fan and solenoid valve control
- 40-event alarm history storage for incident tracking
- Unit conversion capability for toxic gas measurements (mg/m³ to μmol/mol)
| Parameter | Specification |
|---|---|
| Product Name | YA-D400 Fixed Gas Alarm Detector |
| Power Supply | 24V DC; Combustible: ≤4W; Oxygen/Toxic: ≤3W |
| Detection Range | Combustible: 0-100% LEL; Oxygen/Toxic: 0-1000 μmol/mol |
| Accuracy | ±5% FS (sensor dependent) |
| Response Time | Toxic: ≤60 seconds; Combustible: ≤30 seconds |
| Sensor Life | 36 months (sensor dependent) |
| 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 |
| Dimensions | 205 × 209 × 84mm |
| Weight | 2kg |
| Transmission Distance | ≤1200m (RS485, 2-bus, 4-20mA) |
This industrial gas detector holds multiple international certifications including ATEX, SIL, CE, FCC, ROHS, and ISO9001. The manufacturer provides comprehensive OEM/ODM services, technical guidance for calibration and installation, and a 1-year warranty with responsive customer support.
We offer OEM/ODM services and online technical guidance for calibration, zero adjustment, settings configuration, and installation procedures.
We are the original manufacturer with industry experience since 2007.
Our detectors are certified with ATEX, SIL, CE, FCC, ROHS, and ISO9001 standards.
We provide a 1-year warranty on all our gas detection products.
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