Patent ID: 6493080
Filing Date: 2002-12-10
Classification: G01N

Abstract:
A total reflection measuring cell for spectroscopic examination of a sample in an infrared (IR) spectrometer, the measuring cell comprising:an attenuated total reflectance (ATR) crystal having a planar surface; a clamping frame; a diaphragm clamped in said clamping frame along a plurality of sides to extend at a small separation from said planar surface; a tensioning device communicating with said diaphragm for parallel displacement of an inner surface portion of said diaphragm in a direction towards said planar surface to create a displaced inner partial area of said diaphragm under higher tension; and a stop in communication with said tensioning device, said tensioning device pushed against said stop and fixed to maintain a constant defined separation between said planar surface and said displaced inner partial area.