Fixed Gas Detection Products
Sensidyne SensAlert ASI Gas Detector
Sensidyne SensAlert ASI Gas Detector
The SensAlert ASI is a SIL-2 certified universal gas detector for toxic, combustible, and oxygen monitoring in critical safety applications. It features Predictive Sensor End-of-Life alerts, optional Test-on-Demand™ (ToD) gas generationfor remote functional checks, and a non-intrusive, menu-driven interface for fast setup and maintenance. Compatible with Plus Series electrochemical, infrared, and catalytic sensors, the transmitter supports local or remote-mounted sensor heads up to 30 m (100 ft) for flexible installation.
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- Free technical support included
- Complimentary product training available
- Free on-site or virtual demonstration offered
Technical Details
Specifications
- Detection method: Electrochemical, infrared, or catalytic bead (Plus Series)
- Measured gases: Toxic, combustible, and oxygen (sensor-dependent)
- Power / current: 24 V DC; 2-wire ≈20 mA, 3-wire ≈90 mA (up to ≈300 mA with relay card/combustible)
- Outputs: 4–20 mA (2- or 3-wire), RS-485 Modbus, HART
- Relays: 1 × SPDT (standard), optional card adds 3 × SPDT (5 A @ 115 VAC / 30 V DC)
- Display / UI: 128×64 graphic LCD (backlit on 3-wire), magnetic keypad; 4 status/alarm LEDs
- Operating conditions: –40 °C to +70 °C; 0–90% RH (non-condensing)
- Ingress protection: IP54 (IP56 with optional rain shield)
- Enclosures: Cast aluminium (blue), 316 stainless steel, or long-dome aluminium
- Mounting options: Local, remote sensor head, duct mount, sample-draw configurations
- Approvals: SIL-2 (IEC 61508); ATEX/IECEx; NEC/CEC Explosion-proof/Flameproof/IS/Non-Incendive; CE
Key Features
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SIL-2 certified: Third-party verified hardware & software integrity for critical safety systems
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Test-on-Demand™: Optional on-board gas generator enables remote sensor response checks
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Predictive diagnostics: End-of-life indication warns of impending sensor failure
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Universal platform: Accepts EC, IR, and catalytic Plus Series sensors for broad applications
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Flexible installation: Intrinsically safe or explosion-proof configurations; remote sensor up to 30 m
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Non-intrusive setup: Magnetic keypad and menu-driven interface—no housing open required
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Transportable calibration: Calibrate sensors safely off-line, then plug-and-play on site
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Comms & control: 4–20 mA, Modbus RS-485, HART, and configurable alarm relays
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Rugged enclosures: Aluminium or 316 SS with IP54/IP56 weather protection
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Global approvals: ATEX, IECEx, UL/CSA, CE for worldwide deployment
Industry Applications
The SensAlert ASI is built for refineries, chemical processing, power generation, utilities, and confined or hazardous industrial areas where dependable, certifiable gas detection is essential. Its SIL-2 certification, predictive diagnostics, and versatile I/O make it ideal for mission-critical safety systems, process interlocks, and environmental complianceacross a wide range of sites.
