Total dissolved gas pressure sensor, replaceable collector modul

Details Total dissolved gas pressure sensor, replaceable collector modul Total dissolved gas pressure sensor, replaceable collector modul

1996-05-01

1998-06-09

Brock, Michael

Measuring and testing

Gas content of a liquid or a solid

By pressure of the gas

73 1912, G01N 710

Patent

active

057637628

ABSTRACT:
An improved total dissolved gas pressure collector has a high ratio of surface area to internal volume and is configured in a compact unit which still permits good fluid flow across it. The module forms part of an improved gas sensor package having high sensitivity (e.g., less than 0.1 mm Hg, preferably less than 0.05 mm Hg) and rapid response times (e.g., less than 5 minutes to 99% of equilibrium, preferably less than 2 minutes to this value). The module comprises: a base having an opening therein; a resilient fitting in said opening in the base; a plurality of upstanding capillary tube supports; an elongated, gas-permeable capillary tube having defined internal volume and defined external surface area, the tube being closed at one end which is secured to one of the supports and having one end adapted to communicate with a total gas pressure transducer through the resilient fitting. Also provided are an acquisition and analysis system including the module, and a method for making the improved module. The devices of the invention are particularly suitable for measuring total dissolved gas pressure in a submarine environment.

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