The Gasurveyor 11-500 is designed for either gas/air or gas/nitrogen/air purging, with the ability of the Gascoseeker and the addition to measure oxygen during a nitrogen purge.

In accordance with the Gasurveyor 3-500, the 11-500 also has the following features: automated zero during start-up, manually selectable purge mode, optional rechargeable batteries and option of gas alarms (not recommended if using as a purge instrument).

The two-button operation means the Gasurveyor 11-500 is easy to use and operator training can be conducted quickly. The rugged design allows the Gasurveyor 6-500 to be used in harsh environments. The Gasurveyor 6-500 is also fully compatible with our range of calibration software and equipment.

性能：

• Automatic hydrocarbon range selection
• Manual selection of purge mode
• Simple 2-button operation, allowing user access to all features
• Automatic zero
• Gas/air and gas/nitrogen/air purge mode
• Hydrocarbon resolution to equivalent of 50 ppm methane
• Accurate, robust and extremely reliable instrument
• Integral pump with flow-path protected by water filter
• Rugged carbon loaded polypropylene case, sealed to IP54 rating and suitable for outdoor use
• LCD with backlighting which displays the current gas readings (in both digital and analogue format), together with operational and status information
• Can be checked/calibrated via an infra-red link to GMI Auto Test Calibration Unit, without opening the instrument
• Optional rechargeable batteries
• Optional gas alarms
• Optional calibration gases
• Comprehensive range of accessories
• ATEX approved

• Leak detection
• Bar hole survey
• Gas/air or gas nitrogen air purging
• Gas escape detection
• Petroleum installations
• Hot work permitting
• Confined space (only hydrocarbon and oxygen gases)