METS - an underwater methane sensor



Function principle

A 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.

Response time: reaction time within few seconds T90 between 1 and 30 min depending on version and deployment conditions



Size: diameter 49 mm; length over all approx. 200 mm

No internal moving parts or pumps, hence lower failure risk and lower power drain.

Material (housing and connector)   Titanium
Weight in air METS (classic, IR, W)   0.8 kg
Weight in air K-METS   1.4 kg
Connector (manufacturer: Subconn)        MCBH8M-Ti
Depth   4000m

Application example

application_example Detection of methane hydrates at the sea-floor

Adaptation of METS sensors to a CTD logging system

View on the bottom


Further applications

Oil industry: offshore oil and gas exploration, survey and inspection, pipeline leak detection

Sewage treatment plants: basin aeration control

Waste water ducts: control of methane presenc


pdf_button  Download Datasheet Methan Mets.pdf

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