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Fixed 4 in 1 Gas Detector with RS485, CO, H2S, O2 and Combustible Gas – Acoustic Testing Pro
Acoustic Testing Pro Fixed 4-in-1 Gas Detector with RS485, IP66 protection, and Ex d Ⅱ C T6 Gb explosion-proof design for industrial gas safety monitoring.
Overview
The Acoustic Testing Pro is a high-performance fixed multi-gas detector designed for industrial safety monitoring. It supports simultaneous detection of combustible gases, toxic gases, and oxygen using advanced catalytic combustion, infrared, semiconductor, or electrochemical sensors. With IP66 protection, explosion-proof design, and RS485 communication, it ensures reliable operation in harsh environments. Weighing only 3.5 kg (7.7 lbs), this detector is suitable for factories, refineries, chemical plants, and hazardous locations.
Features
- Real-time detection of combustible, toxic gases, and oxygen with high accuracy.
- High-brightness LED display with English menu for easy operation.
- Multiple signal outputs including RS485, 4–20mA, relay output.
- Explosion-proof Ex d ⅡC T6 Gb certification for hazardous environments.
- IP66 grade protection against dust and water.
- Built-in 2-level alarm to trigger fans or solenoid valves automatically.
- Remote control operation for ease of use and configuration.
- Advanced microprocessor control ensures stability and reliability.
- Supports 9600/4800/2400 baud rates with quick switching.
Technical Specifications
| Detection Gases | Combustible Gas, Toxic Gas, Oxygen (4-in-1) |
| Detection Principle | Catalytic Combustion, Semiconductor, Electrochemical, Infrared, PID |
| Detection Range | 0–100%LEL / 0–30%VOL / 0–100PPM |
| Minimum Reading | 1%LEL / 0.1%VOL / 1PPM |
| Alarm Mode | LED Display + Audible & Visual Alarm |
| Alarm Levels | 2-Level Alarm (High & Low) |
| Explosion Proof Grade | Ex d Ⅱ C T6 Gb |
| Output Signal | RS485, 4–20mA, Relay Output (COM, NO) |
| Baud Rate | 9600 / 4800 / 2400 (switchable) |
| Communication Interface | RS485 with 2KV photoelectric isolation, PowerBus |
| Operating Temperature | -40°C ~ +70°C (-40°F ~ +158°F) |
| Operating Humidity | 10%RH – 93%RH (non-condensing) |
| Power Supply | DC 24V (24–36VDC supported) |
| Protection Grade | IP66 (dustproof & waterproof) |







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