Crowcon Gasman

Crowcon Gasman is engineered as a true personal safety device for workers operating in demanding conditions and hazardous zones. Its rugged polycarbonate housing with full overmoulding provides high impact resistance, while strong ingress protection resists dust and water. This enables the detector to withstand drops, knocks and everyday abuse typical of oil and gas facilities, chemical plants (including exotic gases), steel works, waste and water operations, renewable energy sites and hospitality environments handling gases such as CO₂.

Despite its toughness, Gasman remains extremely compact and ultra-lightweight, typically between 85–139g depending on sensor. With dimensions around 90 × 48 × 24 mm and an integral alligator clip, it can be worn on clothing, belts, harnesses or pockets without restricting movement, supporting comfortable all-day use across long or physically demanding shifts.

Gasman focuses on single-gas monitoring but supports a very broad range of target gases, including flammable (LEL), oxygen, common toxic gases such as CO, CO₂ and H₂S, as well as ammonia, chlorine, ozone and other reactive or exotic gases. Interchangeable intelligent sensor modules allow a detector to be reconfigured for different gases, enabling instruments to be redeployed as processes, plant areas or risk profiles change.

A choice of sensor technologies, including catalytic and electrochemical cells alongside MPS™ flammable sensors and long-life oxygen (LLO₂) variants, allows closer matching of performance to specific hazards. Long-life oxygen versions combine extended operational life with a 5-year sensor warranty, supporting RoHS compliance requirements and helping to reduce sensor replacement frequency and planned maintenance.

Gasman delivers rapid response to gas hazards, with typical T90 response times of around 20 seconds for many flammable and toxic gases, and about 10 seconds for oxygen and long-life oxygen sensors. This fast response supports earlier intervention, whether that means moving personnel to safety or applying site emergency procedures.

A powerful triple alarm system ensures alerts are hard to miss in noisy or visually complex areas. A loud 95 dB audible alarm is backed by vivid twin red/blue LED visual alarms and a strong internal vibrating alarm. Two instantaneous alarm levels per gas channel provide clear differentiation between stages, while multiple distinctive alarm tones help users distinguish different alarm conditions and respond appropriately.

The custom backlit LCD displays real-time gas concentration, making current exposure immediately visible. The display supports additional views including peak reading and Time Weighted Average (TWA), allowing safety teams to assess both immediate and cumulative exposure. Front-panel icons communicate status information such as battery condition, operating mode and key warnings at a glance, reducing the risk of misuse.

The backlight can be user-activated for improved readability in dark or confined spaces, enhancing usability during night work, confined space entries or poorly lit plant areas. Designed as an intrinsically safe personal monitor with suitable ignition protection for use where flammable atmospheres may be present, Gasman supports continuous personal monitoring of flammable, oxygen and toxic gas hazards in classified areas.

Gasman is built around straightforward one-button operation for major functions, including viewing gas levels, peak recall, TWA, zeroing and menu navigation. This simplicity limits training time and supports mixed-experience teams, contractors and transient workers. A short warm-up time, typically under 90 seconds from power-on to ready state, minimises downtime at the start of a shift or after battery changes.

Instructional videos covering basic operation, charging, calibration, TWA, peak mode and alarm response are available, complemented by technical support, product training and optional calibration certificates from the manufacturer and resellers. This combination helps standardise best practice, support onboarding and demonstrate compliance where training evidence is required.

Crowcon Gasman offers both rechargeable and non-rechargeable lithium battery configurations to align with different deployment models. Rechargeable units provide at least 12 hours of operation for flammable versions and more than three days between charges on MPS-based models, suiting daily and extended shift patterns. For toxic and oxygen monitoring, non-rechargeable versions offer up to two years of operating life, supporting low-maintenance, low-touch use where routine charging is impractical.

Single and multi-way chargers, including 5-way banks and vehicle charging leads, simplify fleet charging strategies. As chargers are not included by default with many rechargeable versions, organisations can size charging infrastructure to match fleet numbers and duty cycles, rather than purchasing unnecessary hardware.

Data and event logging are provided as standard. With an adjustable sampling rate (1-minute default), Gasman stores up to 900 hours of readings (54,000 data logs) and more than 4,800 events. This enables incident review, exposure analysis and evidence gathering for audits, investigations and regulatory reporting. The detector is designed to continue tracking TWA exposure across mid-shift breaks or shift changes, supporting more accurate worker exposure records over complete working periods.

Calibration due alerts at start-up, including 30-day advance warning, overdue calibration and service required indications, provide clear prompts to keep detectors in calibration and reduce the risk of non-compliant devices entering service. Gasman can be calibrated using Crowcon Portables Pro/PC software or the Checkbox IMH, supporting on-site calibration regimes without sending instruments offsite and helping to minimise downtime.

Crowcon Gasman integrates with wider safety systems through both cloud and local tools. Compatibility with Crowcon Connect enables cloud-based fleet and asset management, including custom dashboards and safety reporting across multiple sites. This centralises oversight, supports proactive maintenance and simplifies compliance reporting for large instrument fleets.

For local or offline management, a PC interface via RS232 (with an optional RS232/USB adapter) allows downloading logged data, updating configurations and maintaining calibration records. This supports traceability and integration with existing record-keeping and reporting processes.

A broad accessory range allows one platform to cover multiple applications with minimal SKU complexity. Optional single and 5-way chargers, vehicle charging leads, leather cases, external filters and harness kits support day-to-day deployment and protection of detectors. Gas test kits, including flow plates, regulators, tubing and related accessories, support regular bump testing to verify detector response.

For confined or remote locations, optional manual aspirators and flow caps enable sample-draw monitoring, allowing personnel to test spaces before entry or from a safer distance. Alongside the intrinsically safe hazardous-area models, a safe-area CO₂ infrared version (0–5% vol.) is available for applications that require reliable CO₂ monitoring without hazardous-area certification.

Gasman carries approvals for hazardous areas under schemes such as ATEX, IECEx and CSA/CSA22.2, with specific classifications for toxic/oxygen and flammable models. Region and standard configuration options, including ATEX, CSA and INMETRO variants, support correct selection for different territories and regulatory frameworks.

Available gas ranges and standard alarm set-points are predefined for many gases yet can be configured to meet local regulations or site policies. Reactive and toxic gas sensor options, including more challenging species such as ozone, chlorine dioxide and phosgene, are supported with appropriate sampling and calibration guidance. Together, these capabilities make Crowcon Gasman a versatile, standardised platform for personal gas monitoring across single sites and multi-site fleets.