Industrial environments demand constant vigilance when it comes to gas hazards. From explosive atmospheres and oxygen depletion to toxic gas exposure, undetected leaks can lead to catastrophic outcomes. ProDetec supplies, installs, commissions, and maintains fixed gas detectors across Australia, helping businesses protect people, assets, and operations with reliable, compliant fixed gas detection solutions.
Our fixed gas detector systems are designed for continuous monitoring in high-risk environments, providing early warning of hazardous gas build-up before conditions become dangerous. Whether you operate in mining, oil and gas, wastewater treatment, manufacturing, or heavy industry, ProDetec delivers scalable fixed gas detection systems engineered for Australian conditions and regulatory requirements.
A fixed gas detector is a permanently installed safety device that continuously monitors the presence of hazardous gases in a defined area. Unlike portable instruments that rely on manual use, fixed gas detectors operate 24/7, automatically detecting gas concentrations and triggering alarms or control actions when predefined thresholds are exceeded.
Fixed gas detectors are typically integrated into broader safety infrastructure, including control panels, audible and visual alarms, ventilation systems, and emergency shutdowns. This makes them a critical component of modern industrial fire safety systems and occupational health frameworks.
In many facilities, fixed gas detection is mandated by Australian Standards and workplace safety legislation, particularly in confined spaces, hazardous zones, and areas with flammable or toxic gas exposure. While ProDetec also supports advanced sensing technologies such as the turbidity sensor for water quality monitoring, fixed gas detection remains a cornerstone of industrial risk management.
Selecting the correct detection technology is critical to system reliability and compliance. ProDetec engineers solutions using proven technologies matched to gas type, environment, and risk profile.
Commonly used for toxic gases such as carbon monoxide, hydrogen sulphide, chlorine, and ammonia. Electrochemical sensors offer high sensitivity and selectivity, making them ideal for workplace exposure monitoring.
IR sensors are widely used for detecting hydrocarbon gases such as methane, propane, and butane. These sensors are stable, resistant to poisoning, and suitable for harsh environments. IR technology is also commonly deployed alongside flame detection systems in hazardous areas.
Designed for flammable gas detection, catalytic sensors measure combustible gas concentrations as a percentage of the Lower Explosive Limit (LEL). While effective, they require oxygen to operate and need regular calibration.
Used for detecting volatile organic compounds (VOCs) at very low concentrations. PID-based fixed gas detectors are ideal for chemical processing plants and laboratories.
Rather than measuring gas concentration, ultrasonic detectors identify the sound signature of high-pressure gas leaks. This technology is highly effective in open or ventilated environments.
Each fixed gas detector type is selected based on gas type, environmental conditions, response time requirements, and compliance needs.
ProDetec’s fixed gas detectors are configured to detect a wide range of hazardous gases, including:
Fixed gas detection systems can be customised to monitor multiple gases simultaneously, ensuring comprehensive coverage across complex facilities. While unrelated to gas hazards, ProDetec also applies similar precision principles to instrumentation such as turbidity sensor deployments in water and wastewater operations.
| Feature | Fixed Gas Detectors | Portable Gas Detectors |
|---|---|---|
| Installation | Permanently installed | Handheld or wearable |
| Monitoring | Continuous 24/7 | Intermittent |
| Coverage | Area-based | Personal |
| Alarm Integration | Yes | Limited |
| Compliance | Often mandatory | Supplementary |
Fixed gas detectors are essential for continuous area monitoring and regulatory compliance in industrial facilities. They provide automatic alerts, system integration, and permanent coverage. Portable devices are best used as a secondary measure for personal safety or temporary tasks. Most workplaces require both fixed gas detection and portable gas detection monitors to achieve comprehensive risk management.
ProDetec’s fixed gas detection systems are designed to meet Australian and international safety standards, including AS 5034, AS 4566, and relevant workplace health and safety regulations.
Equipment supplied is available with IECEx and ATEX certifications for hazardous areas, ensuring suitability for explosive atmospheres.
Many fixed gas detectors also carry SIL (Safety Integrity Level) ratings, typically SIL1 to SIL3, indicating their reliability in safety-instrumented systems.
Compliance is not only a legal requirement but a critical factor in reducing risk, liability, and insurance exposure.
ProDetec provides fixed gas detection solutions across a broad range of Australian industries, including:
Our systems are engineered to operate reliably in extreme temperatures, corrosive environments, and remote locations, ensuring uninterrupted fixed gas detection under any site conditions.
ProDetec partners with globally recognised manufacturers to supply high-performance fixed gas detectors known for accuracy, durability, and compliance. Our portfolio includes modular systems, addressable detectors, explosion-proof units, and SIL-rated devices suitable for safety-critical applications.
We also support integration with broader safety ecosystems, including gas detectors used in portable applications, SCADA systems, building management platforms, and emergency response networks.
ProDetec delivers end-to-end fixed gas detection services, from system design and equipment selection to installation, commissioning, calibration, and ongoing maintenance. Our Australia-wide service capability ensures consistent support for metropolitan facilities and remote industrial sites alike.
Whether you are upgrading existing infrastructure or designing a new facility, ProDetec provides expert guidance to ensure your fixed gas detector systems are compliant, reliable, and fit for purpose.
Contact ProDetec today to discuss your fixed gas detection requirements or request a tailored system design.
A fixed gas detector is a permanently installed device that continuously monitors hazardous gas levels in a specific area and triggers alarms when unsafe concentrations are detected.
Calibration frequency depends on sensor type and site conditions, but most fixed gas detectors require calibration every 3 to 6 months to maintain accuracy and compliance.
Sensors should be positioned based on gas type, airflow, potential leak sources, and whether the gas is lighter or heavier than air. Proper placement is critical to effective fixed gas detection.
The number of fixed gas detectors required depends on facility size, layout, risk profile, and compliance obligations. A site risk assessment is essential to determine optimal coverage.
SIL certification indicates the reliability of a safety device within a safety-instrumented system. Higher SIL ratings reflect a lower probability of failure and are often required in high-risk industrial environments.
