Fixed Gas Detection Products
Trolex Sentro 1 Gas Detector
Trolex Sentro 1 Gas Detector
The Trolex Sentro 1 Universal Gas Detector provides accurate and continuous monitoring of toxic and flammable gases in demanding industrial and mining environments. Designed for maximum reliability, it features an integrated high-intensity audio/visual alarm for wide-area alerts, ensuring immediate safety response.
Built around the intelligent Sentro eModule, each pre-calibrated sensing module can be replaced within seconds — even while powered — making maintenance fast and simple. With auto ZERO and SPAN calibration, a clear LCD display, and full 4–20 mA analogue output, the Sentro 1 delivers dependable protection for mining, tunnelling, oil & gas, utilities, and process plant operations.
- Free technical support included
- Complimentary product training available
- Free on-site or virtual demonstration offered
Technical Details
Specifications
- Detection method: Electrochemical or infrared (gas-dependent)
- Measured gases: CO, H₂S, O₂, CH₄, CO₂ – others available on request
- Output signal: 4–20 mA DC
- Supply voltage: 7.5–16.5 V DC
- Response time (T90): < 30 s typical
- Display: Large backlit LCD with diagnostic data
- Calibration: Auto ZERO and SPAN via on-screen instructions
- Alarm type: Integrated audio/visual with confidence alert
- Alarm sound level: 85 dB @ 1 m (12 V DC)
- Alarm indication: Flashing LED + audible tone
- Operating temperature: –20 °C to +40 °C
- Humidity: 90 % RH (non-condensing)
- Housing: Reinforced dual-wall polymer, anti-static
- Ingress protection: IP65 (housing), IP54 (gas port)
- Mounting: 2 × 6.5 mm holes (Unistrut 6946 compatible)
- Weight: 650 g
- Certifications: ATEX, IECEx, ANZEx, MASC, DGMS, CIMFR – Group I (Mining) approved
Key Features
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Universal gas detection: Detects a wide range of toxic and flammable gases
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Modular design: Plug-in Sentro eModules for fast, power-on replacement
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Simple calibration: Auto ZERO/SPAN with clear on-screen guidance
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Integrated alarms: Bright LEDs + 85 dB sounder for wide-area coverage
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Rugged housing: Dual-wall moulded construction for maximum durability
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High visibility display: Backlit LCD shows live readings and diagnostics
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TWA/STEL calculation: Automatic exposure limit tracking for toxic gases
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Infrared range switching: Auto-ranging IR sensor for accurate CH₄ detection
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Certified safe: Intrinsically safe for underground mining (Group I Ma)
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Fast servicing: Tool-free eModule change, even while powered
Industry Applications
The Sentro 1 Gas Detector is engineered for underground mining, tunnelling, and oil & gas operations, where fast, reliable gas detection is critical to safety. Its integrated alarm system makes it ideal for storage areas, utilities, and process plants, providing wide-area coverage and dependable protection in harsh, high-risk environments.
With modular sensing technology, rugged IP65 design, and international certification, the Sentro 1 is trusted for continuous safety monitoring across the most challenging industrial sectors.
Trolex Sentro 1 Gas Detector FAQs
Common questions about the Trolex Sentro 1, including gas detection, Sentro eModules, alarms, calibration, industrial applications and ongoing support.
What is the Trolex Sentro 1 Gas Detector?
The Trolex Sentro 1 is a fixed universal gas detector designed for continuous monitoring of toxic and flammable gases in industrial and mining environments. It combines interchangeable sensing modules with an integrated display and audible and visual alarm functions.
Which gases can the Trolex Sentro 1 detect?
Depending on the sensing module fitted, the Sentro 1 can be configured to monitor gases including carbon monoxide (CO), hydrogen sulphide (H2S), oxygen (O2), methane (CH4) and carbon dioxide (CO2). Other gas options may also be available for specific applications.
What is a Sentro eModule?
The Sentro eModule is the intelligent sensing module used within the Sentro 1. Modules are pre-calibrated and can be replaced quickly, helping simplify sensor replacement and reduce maintenance downtime.
Where can the Trolex Sentro 1 be used?
The Sentro 1 is designed for industrial and hazardous environments requiring dependable fixed gas monitoring. Applications can include mining, tunnelling, power generation, utilities and process plant operations.
Does the Sentro 1 have built-in gas alarms?
Yes. The Sentro 1 incorporates an audio and visual alarm system designed to provide a clear local warning when configured gas alarm conditions are reached. Alarm indication includes a flashing LED and audible tone.
Does the Trolex Sentro 1 require calibration?
The Sentro 1 supports automatic ZERO and SPAN calibration using on-screen instructions. Its replaceable sensing eModules are pre-calibrated, helping make routine sensor maintenance faster and more straightforward.
Can the Sentro 1 connect to a gas monitoring system?
Yes. The Sentro 1 provides a 4–20 mA DC output for integration with compatible gas monitoring and control systems. MTI can help determine how the detector should be incorporated into a wider fixed gas detection system.
Is the Trolex Sentro 1 suitable for mining?
The Sentro 1 is designed for demanding mining applications and is Group I approved with relevant certifications including ATEX, IECEx, ANZEx, MASC, DGMS and CIMFR. Suitability should always be confirmed against the requirements and hazardous-area classification of the individual installation.
How does the Sentro 1 compare with other Trolex gas detectors?
The Sentro 1 is a flexible universal detector that can use different sensing modules depending on the target gas. For applications requiring a dedicated detector, MTI also supplies products such as the Trolex TX6373 Toxic Gas Detector, Trolex TX6363 Infrared Gas Detector and Trolex TX6383 Flammable Gas Detector.
Can MTI supply and support the Trolex Sentro 1?
Yes. MTI supplies Trolex gas detection equipment and provides technical assistance for product selection, system requirements and ongoing maintenance. Visit our fixed gas detection service and support page or contact MTI to discuss your application.
