Crowcon Gas Pro TK

Crowcon Gas Pro TK is engineered specifically for hydrocarbons stored and handled in tanks, including inerted vessels used in sea transport and shore-based storage. Where standard portable gas detectors and catalytic bead sensors can struggle, its dual-range infrared technology maintains reliable flammable gas readings in oxygen-depleted and high hydrocarbon atmospheres. A single portable instrument supports the full tank lifecycle, from purging and gas freeing through to verifying conditions for safe loading, storage and entry.

The detector is optimised for technicians working on tank maintenance and turnaround tasks, providing clear, stable readings during rapidly changing conditions. Its tank-focused feature set helps reduce reliance on multiple instruments, simplifying procedures and minimising handling errors during critical operations.

The dual infrared (dual IR / dual beam IR) sensor measures flammable gas in both %vol and %LEL ranges and automatically switches between them as concentrations change. This auto-ranging approach presents readings in the appropriate parameter for each phase of purging or gas freeing, reducing the risk of misinterpretation.

Unlike catalytic bead or pellistor sensors, the dual IR sensor does not require oxygen to function and is not inhibited or poisoned by high hydrocarbon levels. This supports more stable, repeatable measurement throughout the full concentration range and helps reduce sensor-related downtime, replacement costs and work interruptions caused by poisoning incidents.

Gas Pro TK can monitor up to five gases, covering flammable hydrocarbons such as methane, butane and propane, toxic gases including carbon monoxide, hydrogen sulphide and hydrogen cyanide, plus oxygen. Multiple 2-, 3- and 4-gas configurations allow the detector to be matched to specific site risks, for example combining flammable gas and oxygen with selected toxic sensors.

Continuous oxygen monitoring indicates when oxygen levels are low enough for safe fuel loading and storage, and when they have increased sufficiently to allow safe tank entry. This combination of process-focused flammable measurement and life-safety monitoring in one device enables teams to manage both tank integrity and personnel safety without changing instruments between tasks.

The detector combines dedicated tank check functionality with full personal gas detection and confined space pre-entry check capability, so the same unit can be used for remote sampling and then worn for ongoing personal protection.

An integrated pump with up to 30 m sample draw enables rapid sampling from the top, middle and base of tanks, and from confined spaces that cannot be accessed directly. This supports better layering assessment and more robust pre-entry checks before opening manways or sending personnel into hazardous areas.

A dedicated pre-entry check mode aligns the detector with typical confined space entry procedures, guiding users through checks before entry. For inerted tank operations, alarms can be disabled within a dedicated tank mode to reflect established working practices while still providing detailed readings for operational decisions.

Gas Pro TK combines robust construction with low carried weight to suit extended use in harsh environments. Its compact housing is independently tested to IP65 and IP67 for dust and water resistance, and the unit weighs approximately 340 g, allowing it to be worn comfortably on belts or overalls for a full shift. Optional chest harness plates and straps support secure chest-mounted operation in demanding conditions.

User-focused ergonomics simplify operation in full PPE. A single-button interface supports quick, consistent operation with gloved hands, while the bright, top-mounted display remains easy to read when the detector is worn on the body. A triple alarm system—loud audible alarm, all-angle red/blue visual indicators and a strong vibrating alert—helps ensure warnings are noticed in noisy, low-visibility or high-distraction environments.

The rechargeable lithium-ion battery typically delivers around 13 hours of runtime with four sensors and the pump operating, supporting full-shift working patterns. A typical recharge time of around 7.5 hours allows overnight turnaround so detectors are ready for the next deployment.

Extensive data logging captures approximately 125 hours of records at 10-second intervals, alongside event logging for up to 1,000 individual alarm or status events. This supports detailed incident review, audit trails and compliance reporting. Compatibility with Crowcon Connect enables digital fleet management and data analysis across multiple detectors, assisting with asset tracking, utilisation monitoring and maintenance planning.

Gas Pro TK operates across a wide temperature and humidity range, making it suitable for harsh onshore, offshore and marine environments. Explosion-protection approvals, together with marine-specific approvals and variants, support use in classified areas on tankers, terminals and offshore installations, while UK and international conformity assessments and electromagnetic compatibility standards assist with deployment across multiple regulatory regions. A distinctive black housing differentiates the Gas Pro TK variant from general-purpose Gas Pro models, helping prevent mix-ups within mixed fleets and ensuring the correct tank-specialist detector is used.

The detector is available with multi-region charging power supplies and cradle chargers on many configurations, with optional accessories including additional power leads, charging cables, single and 5-way cradle chargers and vehicle charging adapters. Automatic flow plate recognition on pumped units simplifies bump testing and calibration set-up, reducing the risk of user error and supporting consistent maintenance routines.

Gas Pro TK units are commonly supplied with optional traceable calibration certificates and service programmes recognising typical six-monthly calibration intervals. A multi-year warranty on the Gas Pro platform underpins long-term reliability expectations. An extensive documentation library—covering datasheets, manuals, certificates and sensor cross-sensitivity data—together with instructional videos and distributor technical support, product training and demonstrations, supports effective deployment, operation and lifecycle management of the detector.