Detection of chemical changes of system fluid via near infrared (NIR) spectroscopy

摘要

An apparatus and method for determining quantity of water and dissolved gases in a fluid system during operation. The method and apparatus uses a sensor on the fluid system to determine the properties during operation by applying NIR (near infrared) Spectroscopy. The detection of water (including discrimination of form of water) is determined using NIR spectroscopy. In one implementation this is done by guiding a laser LED tuned to 5000-5500/cm wavenumbers and beaming the laser through a transparent window into a reservoir of fluid.

主权项

1. A fluid monitoring apparatus comprising:
a fluid line having a closed side wall where said closed side wall has a window portion and said window portion is composed of a material that allows a near infrared emitted light to pass there through; a light source configured to direct the near infrared emitted light through said window portion; a spectrometric sensor having an optical filter adapted to pass reflected near infrared light reflected outwardly through said window portion to a near infrared detector adapted to determine a radiation absorption value about a wavelength conducive for determining percent water content; and an injector in fluid communication with the fluid line and configured to selectively inject one or more of air and water into the fluid line responsive to a maintenance message indicative of the percent water content.