Cosa-xentaur Xentaur XDTL-HT Manuel d'utilisateur télécharger pdf (Page 6)

Overview

The COSA Xentaur XTDL-HT™ is a tunable diode laser moisture analyzer with a new proprietary

measurement cell designed for harsh environments, such as the dirty blanket gases in heat treating

applications, where high particulate counts and corrosive gases cause other measuring systems to fail.

It frees from the worry of cleaning the optics or frequently replacing sensing elements due to frequent

drift or failure. Once calibrated at the factory, no further recalibration is required. A reliable on-line

moisture system will improve the quality of the finished product and alert to process upsets, thus

preventing the costly reworking of parts.

The XTDL-HT™ employs proprietary backscatter GasScan™

Wavelength Modulation Spectroscopy

(WMS) technique developed by Physical Sciences Inc. With no mirrors in the gas flow path, the XTDL-

HT™ can handle extreme gas stream conditions with high particulate without compromising the

measurement. This adaptive measurement method is also independent of the light level so

approximately 80% of the light intensity can be lost while still making an accurate measurement.

The integrated sample conditioning system aspires the sample from the low pressure furnace by

means of an eductor, eliminates particulates through a self-cleaning sintered stainless steel tube filter

and regulates the flow and pressure of the sample. The measurement cell is temperature and pressure

controlled to ensure measurement accuracy and consistent results from the analyzer. This instrument

software allows up to 6 different stored factory calibration curves based on the gas matrix or ambient

conditions. Real-time pressure correction is employed to further enhance measurement repeatability.

The instrument comes factory calibrated against a NIST traceable reference standard. Under normal

conditions, the instrument should not require calibration in the field due a proprietary algorithm,

TruTune™, which checks and aligns the light source automatically in the background ensuring the

instrument is properly tuned.

Up to three user-selected variables can be displayed: two in text form and a third in graphical form.

The interface is flexible and allows the end user to display any combination of available variables. Even

a single variable can be displayed in three different sets of engineering units.

GasScan™ is a trademark of Physical Sciences Inc.

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Cosa-xentaur Xentaur XDTL-HT Manuel d'utilisateur Page 6