Metrohm Vision – Diagnostics - Manual (Page 65)

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17.3 Increasing Noise
Control charts are an excellent way to track RMS Noise on your instrument. Increasing noise is usually
due to one of the following factors:
Most Likely Cause: Recommended Action:
Dirty sample window Clean window using a Kimwipe™ or
other lint-free wipe
Light leak 1. Check for correct assembly of system
2. Close cover (if so equipped) during
scans
3. Check for missing parts
Vibration of lab bench or mounting
area 1. Remove source of vibration if possible
2. Use isolation mounting for process
instruments
Lamp becoming unstable
(This is marked by high or unstable
bias, increasing S/D on Wavelength
Accuracy, and increasing noise.) Replace lamp
Note: Use only Metrohm direct
replacement lamp, available from your
distributor.