Franatech - - Mets Methane Sensor Brochure

Methane SensorV e r S i o n C l a S S i C M e t SFunction principleA methane sensitive detector is located in a detector room in the sensor head. The detector room is protected against water and pressure by a silicone membrane. The gas molecules diffuse through the membrane, following the partial pressure gradient between water and detector room, according to the Law of Henry. Hence, the concentration in the detector room is directly correlated to the concentration in the outside water. The correlation is expressed by the calibration formula.The Methane Sensor is a direct product of a R&D project funded by the German Federal Ministry for Research and Technology through Grant # BEO 71/03F0171A. The principles of the methane sensor and several applications are protected by international patents, pending patents and patent applicationsMechanical specificationsU N D E R W A T E R S E N S O R S F O R D I S S O L V E D G A S E S163 mm200 mm37 mm49 mmStandard OptionalMaterialStainless steelTitaniumWeight in air METS 1.3 kg 0.8 kgDepth rating 4000mno internal moving parts or pumps, hence lower failure risk and lower power drainInherent to the technology, and also dependent on detector manufacturing and tuning, all parameters such as sensitivity, power consumption, response time and response behavior are linked together. The following specifications are indicative, we can select and tune the detectors to meet your requirements.Electrical specificationsInput: 9 to 36 VDC, 35 to 100 mA@12VDCOutput: standard analogue 0…5V and digital RS485Options: 4…20mA, RS232, analogue only, digital only, Desktop Converter RS485/RS232Calibration rangesTemperature: standard 2–20°C, others on requestMethane: standard 50nM – 10µM sensitive1nM – 500nM (in pumped flow-through mode) low range20nM – 1µM high range 1µM – 40µMCalibration formula and parameters can be provided in format compatible with CTD-probe from different manufacturers (e.g. Seabird, SST)Response time: reaction time within few seconds T90 between 1 and 30 min depending on version and deployment conditions.Special features: integrated formula (plug & play) correction formula for work under variable oxygen levelsnote: above concentration and temperature ranges are typical. Depending on the application requirements, we can select other calibration ranges.With compliments Franatech GmbHinfo@franatech.com www.franatech.comCALIBRATION RANGES• Temperature: standard 2–20°C, others on request• Methane: standard 50nM – 10µM sensitive 1nM – 500nM (in pumped flow-through mode) low range 20nM – 1µM / high range 1µM – 40µM• Calibration formula and parameters can be provided in format compatible with CTD-probe from different manufacturers (e.g. Seabird, SST)• Response time: reaction time within few seconds T90 between 1 and 30 min depending on version and deployment conditions.• Special features: integrated formula (plug & play) correction formula for work under variable oxygen levelsNOTE: above concentration and temperature ranges are typical. Depending on the application requirements, we can select other calibration ranges.ELECTRICAL SPECIFICATIONS• Input: 9 to 36 VDC, 40 to 120 mA@12VD• Output: standard analogue 0..5V and digital RS485• Options: 4..20mA, RS232, analogue only, digital only, Desktop Converter RS485/RS232 MECHANICAL SPECIFICATIONS• Material: Titanium • Weight in air: 0,8 kg• Weight in water: 0,5 kg• Depth rating 4000mNo internal moving parts or pumps, hence lower failure risk and lower power drain. Inherent to the technology, and also dependent on detector manufacturing and tuning, all parameters such as sensitivity, power consumption, response time and response behavior are linked together. Following specifications are indicative, we can select and tune the detectors to meet your requirements.FRANATECH GMBHLÜNEBURG, GERMANY PHONE: +49 - 4131 - 60 38 87FRANATECH ASOSLO, NORWAYPHONE: +47 - 900 - 21 49 2INFO@FRANATECH.COM WWW.FRANATECH.COMMETS Methane Sensor