Multi Channel Stationary Fixed Hydrogen Gas Detector Controller Bus System 4-20mA RS485
This product is a 4/8/16/32-channel gas alarm control panel. It consists of a universal metal enclosure, switching power supply, main board, interface board, and alarm units. The display section features 0.8-inch digital tubes that sequentially show gas concentrations for each channel, delivering clear visibility adaptable to various lighting conditions while indicating channel status. The keypad incorporates multiple high-quality buttons offering comfortable tactile feedback to enhance user operation.
The programming implements a high-security trigger mechanism: key recognition initiates upon pressing and completes upon release. Key signals shorter than 20ms are invalid, those between 20ms–3s register as standard presses, and signals exceeding 3s trigger long-press detection. The system provides audible and visual alarms with multiple relay outputs.
◆ Power Supply: AC 220V ±20%, 50Hz; Output: DC 24V; Power consumption <2W.
◆ Dual Display: Digital tubes and LEDs ensure long lifespan, high brightness, and low power consumption. Clear visibility adapts to varying lighting, displaying concentration, units, alarms, and faults intuitively.
◆ Embedded MCU: Features ST’s 32-bit high-performance, low-power microcontroller for rapid signal processing from detectors and real-time concentration display.
◆ Audio-Visual Alarms: Visual alarms (optional); distinct audible alerts for faults, low/high alarms.
◆ Relay Outputs: Up to 4 dry-contact relays with customizable configurations for diverse applications.
◆ Flexible Detector Signals: Supports 4-20mA or RS485 (default: 4-20mA; RS485 optional).
◆ Mute Function: Silences false alarms triggered by misoperation or testing.
◆ Channel Lock (16-ch): Allows locked-channel switching for real-time monitoring/testing.
◆ Ergonomic Keypad: Large, high-quality buttons with optimal tactile feedback for enhanced operation.
◆ Robust Enclosure: Simple waterproofing between door and body; smooth-finished metal shell for touch comfort and pressure resistance.
◆ Ingress Protection: Water/dust-proof cable glands secure wiring entries.
◆ Wall-Mounted: Easy installation/removal; optional brackets available.
>>Main technical parameters
| Display Method | Digital tubes, LED indicators |
|
Input Voltage |
AC 220V ±20%, 50Hz |
| Power Consumption | <2W |
| Channels | 4/8/16/32 channels (optional) |
| Detector Power | DC 24V, 300mA per channel |
| Input Signal | 4-20mA (RS485 optional) |
| Relay Output | Dry contact; Capacity: AC 220V/2A, DC 24V/2A |
| Alarm | Audible: >80dB at 1m; Visual: optional |
| Operating Temp. | -20℃ to +50℃ |
| Operating Humidity | ≤95% RH (non-condensing) |
| Material | Cold-rolled steel sheet with spray coating |
| Installation | Wall-mounted (custom brackets optional) |
| Dimensions | L325×W220×H74mm (16-channel) |
| Weight | Approx. 2.6 kg (16-channel) |
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