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Sensidyne SensAlert Plus — Technical Archive

Gas Detectors and Industrial Measurement Instruments

TECHNICAL ARCHIVE

Production Discontinued

The manufacturer states that SensAlert Plus became obsolete on 31 December 2025. Factory service, parts and sensors continue to be offered by the manufacturer. For new projects, review the successor SensAlert ASI and confirm the required sensor configuration.

SensAlert ASI →

Manufacturer Notice ↗

Sensidyne SensAlert Plus product image

Fixed Toxic and Combustible Gas Detector for Harsh Field Conditions, with Display and Configurable, Infrared-Electrochemical-Catalytic Gas Sensor Options, NEMA 4x Polycarbonate Construction



Product Specifications

  • Durable and Practical Construction

  • Plus Sensors Indicating Sensor Life

  • Wide Target Gas Selection

  • Adjustable Sensor Heads

  • ATEX Certified (Suitable for Potentially Explosive Atmospheres)

  • Suitability Across Diverse Applications

  • Flexible Use with Connection Outputs

  • Simple, Cost-Effective, and Safe Installation

  • Easy Maintenance

  • International Compliance Certificates

    • Product Documents

    Technical Specifications

    Show Technical Details
    Sensor Type Electrochemical, Infrared, Catalytic Bead (Varies by gas type)
    Display LCD display showing Gas Identification, Gas Type, Gas concentration and engineering units, System messages and warnings; Magnetic Keys (Used for display operation and System Parameter Security)
    Construction Two different versions are available;
    NEMA 4X: Polycarbonate
    Explosion-proof version: Copper-free Cast Aluminium
    Connection Outputs 4-20 mA
    Power Supply 2-Wire 24V DC (±25%) - 20mA
    3-Wire 24V DC (±25%) - 90mA
    When Relay Board and Catalytic Bead Sensors are used (300mA)
    Protection Class IP54 (IP56 with Rain Shield)
    Certificates*
    (*Varies by model)    		 CE Marking: (ATEX Directive 94/9/EC)
    Suitability for Explosive Atmospheres: NEC and CEC Class I Div 1, Grps A, B, C, D; Class II Grps E, F, G; Class III T4 (Explosion-proof version only)
    Flameproof Enclosure: ATEX EEx d[ia] IIC T4 II 2 [1] G NEC and CEC Class I Div 2, Groups A, B, C, D; Class II Grps E, F, G; Class III T4 ATEX EEx nC [ia] IIC T4 II 3 [1] G (Explosion-proof version only)

    Gas Detection and Standards Approach

    Fixed gas detection approach: Target gas, measuring range, sensor technology, alarm levels, mounting location, ventilation, process conditions, output/communication, and area classification must be evaluated together. In flammable gas and explosive atmosphere applications, the EN/IEC 60079 series; and in toxic gas and oxygen applications, relevant standards such as EN 45544, EN 50104, and EN 50271 for control electronics may be considered on an application basis. This description does not imply that the model is certified to all standards; compliance must be verified separately using the model code and current manufacturer certificates.

    Sectors

    Oil, Gas and PetrochemicalsChemical and Pharmaceutical IndustryPower and InfrastructureIron & Steel, Metals and MiningAutomotive and TransportationElectronics and Semiconductor TechnologiesHealthcare and HospitalsCommercial and Industrial Facilities

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    Notice: The technical information, product specifications and images on this page are based on manufacturer publications. The manufacturer may change specifications without notice. For current specifications or assistance in selecting a suitable product for your application, please contact NOVEL at .

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