Address: Ocean Marine Industries, Inc. 2810 Hudson Street Chesapeake, Virginia 23324 Tel: 757-382-7616 Fax: 757-382-5012 METS Methane Sensor The METS methane sensor for underwater deployment is a versatile & modular platform for a number of applications Methane is one of the most important gases in our environment. Indeed, in many areas of everyday life, the monitoring of methane is a necessity. The Franatech`s METS is a unique underwater methane sensor solving the problems of the in-situ measurements of CH4. Applications range from the treatment of sewage waters and landfill leachates to water quality monitoring, from biogas production to climate change studies and also includes many aspects of the offshore oil, gas and hydrate exploration activities (e.g. installation safety, environmental protection, exploration surveys). Download / View Franatech METS ­ Methane Sensor brochure (Opens in a new browser window) Detector type Semi-conductor Function Principle The hydrocarbon molecules diffuse out of the liquid through a special silicone membrane into the detector room. The adsorption of hydrocarbon on the active layer leads to electron exchange with oxygen and thus to modification of the resistance, which the electronic transduces into a voltage. Membrane Standard: 10 µm silicone membrane Optional: 10 to 100 µm silicone membrane with antifouling protection Operational Ranges Depth: 0-2000 metres Optional to 3,500 metres Temperature Typical 2-20 °C - (other ranges on request) Methane Typical 50 nmol/l-10 µmol/l - (other ranges on request) Response Reaction time: 1 to 3 sec. t90-time: up to 5 min. dependent on turbulence Power Supply generally 9 - 36 VDC Power Consumption 160 mA (switch-on peak 400 mA) Power Output Standard analog 0 - 5 V and digital RS-485 Power Options RS - 232 (sensor output) RS - 485/ RS - 232 (desktop converter) 0 - 5 V/ 4-20 mA (desktop converter) - (other ranges on request) Specifications Housing diameter: 49 mm Length overall: 200 mm Weight in air approx: 1, 5 kg (titanium: 1, 0 kg) Housing material: High-grade-steel or titanium Connector: MC BH 8M Applications Methane Hydrates Oceanography Water and Wastewater Treatment Offshore Oil and Gas © Ocean Marine Inc. 2007 About OMI    l    Contact OMI    l    Site Index    l    Email: info@oceanmarineinc.com Visionefx Design