Crowcon Xgard

Crowcon Xgard has been developed as a versatile platform of fixed-point gas detectors that can be closely matched to specific industrial applications. Detection options span flammable gases, a wide range of toxic gases, oxygen and selected VOCs, as well as % volume gas concentrations where high-level monitoring is required. This breadth of coverage supports a consistent gas detection strategy across water treatment works, oil and gas facilities, power generation, research sites and manufacturing plants.

A wide choice of sensor technologies allows performance to be optimised for each hazard and environment. Electrochemical sensors provide targeted monitoring for toxic gases and oxygen. Poison-resistant pellistor sensors deliver robust flammable gas detection, including hydrocarbons, hydrogen, ammonia and mixed vapours. Thermal conductivity sensors support % volume measurement, while Xgard IR variants add infrared sensing for flammable gases where enhanced stability or immunity to certain poisons is required.

The Xgard range includes intrinsically safe, flameproof and safe-area detectors, enabling close alignment with site hazardous area classifications and risk assessments. Selected models are approved for use in multiple hazardous zones and supported by a broad portfolio of international and regional certifications. Validation to a recognised functional safety standard, up to SIL 3 depending on detector type, supports integration into safety instrumented systems where systematic integrity and documented performance are required.

Extensive technical documentation, including data sheets, certificates and multilingual manuals, supports design, verification and regulatory submissions. This helps engineering, safety and compliance teams demonstrate that fixed gas detection is implemented in line with applicable standards and site procedures.

Crowcon Xgard is engineered for long-term exposure to demanding conditions, from indoor process areas to exposed offshore installations. Enclosure options include chemically resistant glass-reinforced nylon, high-grade aluminium with a protective coating and 316 stainless steel for maximum corrosion resistance in aggressive atmospheres. Selected high-temperature models are rated for operation in hot environments, and ingress protection up to IP65 on certain variants resists dust and water.

Application-specific accessories further extend suitability. Spray deflectors and weatherproof caps support outdoor and wash-down locations such as food processing and water treatment plants, while a sun shield limits heat build-up under direct sunlight. A collector cone can improve capture of light gases such as methane in open areas, enhancing the likelihood of early detection where dispersion is rapid.

The Xgard platform is designed to minimise installation effort and fit easily into existing control architectures. Detectors can be wall or ceiling mounted without additional brackets, helping to streamline mechanical design and reduce hardware variation across a site. Cable entry options, including metric and NPT threads, accommodate different regional and corporate cabling standards.

Electrical outputs include commonly used 2-wire 4–20mA and 3-wire mV bridge configurations, enabling straightforward connection to control panels, DCS, PLCs and industrial safety systems. Compatibility with recognised EMC standards and emissions requirements supports reliable operation in electrically noisy environments. This combination makes Xgard suitable for both upgrades of legacy detectors and new-build single-gas or multi-gas system architectures.

Operational arrangements across the Xgard range are focused on simplifying routine maintenance and keeping detectors in service with minimal disruption. Three junction box options are designed to make access, sensor replacement and sinter changes quick and straightforward. Plug-in spare sensors allow rapid swap-out on site, shortening maintenance windows and reducing downtime.

Accessories such as flow adaptors, duct mounting kits and remote gassing solutions support installation in ducts, confined or hard-to-reach locations while still allowing convenient sensor checking. A common calibration adaptor can be used across several detectors, supporting routine bump testing and calibration with a single tool and consistent procedure.

Shared mechanical design and many common spare parts across the Xgard family reduce spares stockholding, simplify technician training and make it easier to apply standard work instructions at scale. This directly supports lower maintenance overheads and predictable lifecycle costs.

Xgard detectors are designed for fast response to changing gas conditions, with rapid T90 performance on many flammable and oxygen sensors to support early warning of hazardous situations. Wide operating temperature and humidity capabilities across detector types enable reliable performance from very cold to very hot climates, in both indoor plant rooms and exposed outdoor locations.

High mechanical robustness and strong corrosion resistance make the range well suited to long-term fixed installation on process plant, utilities and infrastructure sites. Xgard also fits readily into broader gas safety strategies, operating alongside portable gas detectors and centralised monitoring systems to support both plant protection and personnel safety.

Multiple detector types (including intrinsically safe, flameproof and Xsafe safe-area variants), enclosure materials, cable entries and sensor options allow Crowcon Xgard to be configured closely to individual project specifications. At the same time, common accessories, a shared mechanical footprint and overlapping spares across the range support standardisation on a single detector family, even across diverse facilities and regions.

Backed by specialist distributors and service centres offering technical support, site surveys and training, Xgard provides a proven, globally recognised fixed gas detection platform. For organisations seeking consistent engineering practice, strong regulatory support and manageable long-term ownership costs, it offers a balanced combination of flexibility, reliability and safety assurance.