Hardware Installation and Maintenance Manual B–1
Appendix B: Maintaining &
Troubleshooting
This section presents recommendations and solutions to common problems,
such as gas leaks, contamination, excessive sampling gas temperatures and
pressures, and electrical noise. If your analyzer does not appear to be
hampered by one of issues discussed in this chapter, refer to “Service
Contact” on page B-22.
Gas Leaks
Probably the most common cause of erroneous measurements is outside air
leaking into the sample supply line. It is recommended the supply lines be
periodically leak-tested, especially if the analyzer has been relocated or has
been replaced or returned to the factory for service and the sample lines have
been reconnected.
Contamination
Contamination and long exposure to high humidity are valid reasons for
periodically cleaning the gas sampling lines. Contamination in the gas sampling
lines can potentially find its way to the sample cell and deposit on the optics or
interfere with the measurement in some other way. Although the analyzer is
designed to withstand some contamination, it is recommended to always keep
the sampling lines as contamination free as possible. If mirror contamination
is suspected, see “Mirror Cleaning/Replacement” on page B-3.
Tokeepthesamplinglinesclean
1. Make sure that a membrane separator filter (included with most
systems) is installed ahead of the analyzer and operating normally.
Replace the membrane if necessary. If liquid enters the cell and
accumulates on the internal optics, a Power Fail Error will result.
Do not use plastic tubing of any kind for sample lines. Plastic
tubing is permeable to moisture and other substances which can
contaminate the sample stream. SpectraSensors recommends
using 1/4” O.D x0.035” wall thickness, seamless stainless steel
tubing.
Process samples may contain hazardous material in potentially
flammable and/or toxic concentrations. Personnel should have a
thorough knowledge and understanding of the physical properties
and safety precautions for the sample contents before operating
the SCS.
To Next Page
Loading...
