Fixed Gas Detection Products
Trolex Sentro X
Trolex Sentro X

The Trolex Sentro X Gas Detector is an advanced, intrinsically safe gas detection system that combines high accuracy with modern connectivity. Designed for continuous monitoring of toxic, flammable, and oxygen gases, it uses hot-swappable, pre-calibrated gBlocs for simple maintenance and instant calibration.
With multiple output options including RS-485, 4–20 mA, and 0.4–2 V, plus optional Power-over-Ethernet (PoE) and dual relay alarms, the Sentro X offers seamless integration with SCADA and IoT systems. Its rugged IP65-rated housing, OLED display, and simple installation make it ideal for mining, tunnelling, and industrial environments.
- Free technical support included
- Complimentary product training available
- Free on-site or virtual demonstration offered
Technical Details
Specifications
- Detection method: Electrochemical, infrared, or catalytic (gas-dependent)
- Measured gases: Toxic, oxygen, and flammable gases (via interchangeable gBlocs)
- Output options: RS-485 MODBUS, 4–20 mA, 0.4–2 V DC
- Optional features: Power-over-Ethernet (PoE), dual relay alarms, audio/visual alarm
- Display: OLED graphic display, clear in all lighting conditions
- Calibration: Pre-calibrated, plug-in gBlocs with auto-configuration
- Power supply: 9.5–16 V DC (intrinsically safe source)
- Ingress protection: IP65 (Controller and Remote Sensor)
- Operating temperature: –20 °C to +40 °C
- Housing: Reinforced PC/ABS polymer, EMC protected
- Mounting: 2 × M8 fixing holes (controller), Unistrut compatible
- Certification: ATEX and IECEx Group I M1, EPL Ma
Key Features
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Intrinsically safe: Certified for use in Group I hazardous (mining) areas
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Smart modular design: Plug-in, pre-calibrated gBlocs for toxic, O₂, or flammable gases
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Flexible integration: Supports RS-485, 4–20 mA, 0.4–2 V, and optional PoE
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Hot-swappable sensors: Change gBlocs instantly — no tools or downtime
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OLED display: High-contrast visual output for dark or bright conditions
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Rugged construction: IP65 housing, shock and vibration resistant
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Low maintenance: Auto-configuration and easy access design
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Connectivity ready: MODBUS and IoT integration for real-time monitoring
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Customisable setup: Optional A/V alarms, dual relays, and Ethernet cards
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Proven reliability: Built on 65+ years of Trolex gas detection expertise
Industry Applications
The Sentro X Gas Detector is ideal for underground mining, tunnelling, and quarrying, where vibration, dust, and gas hazards are common. It’s equally effective in petrochemical plants, power generation, and industrial processing environments that demand dependable gas monitoring with networked data control.
With intelligent design, PoE capability, and modular gBloc sensing, the Sentro X represents the next generation of connected gas detection.