Metrohm NIRS XDS Process Analyzer – SingleFiber - Manual (Page 91)

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5
Instrument Fails Performance
Test.
1. Temperature and/or humidity may be changing
rapidly during the test. This can usually be
observed as large spectral activity between 1300-
1400nm and 1800-1900nm. Be sure the
instrument enclosure is closed and locked. Allow
to stabilize.
2. Instrument may be located near grinders, stirrers,
or other equipment which produces vibration or
mechanical disturbance. This shows up as spectral
activity in various areas, depending upon the
transmitted frequency of the motion. Turn off all
equipment that might cause such disturbance.
Locate offending equipment to another area, or
place it on isolated supports away from the XDS
Process Analytics Instrument.
6
Instrument fails Instrument
Calibration.
1. Verify that the Wavelength Standard is properly
positioned when prompted by software.
2. In transmission, use the WST3Wxxx Standard.
7
Instrument Gain is excessively
high in Gain Test.
1. NIR Gain should always be less than 100 on the
reference. If gain is high, check for fiber breakage.
2. Verify that lamp is lit. (see above)
If these measures do not correct the problem, please contact your local authorized Metrohm
NIRSystems Distributor.