BA02191C SS2100 H
2
S TDLAS Gas Analyzer
Endress+Hauser B-5
4. Carefully mark the orientation of the mirror assembly with a
permanent ink marker on the cell body.
5. Gently remove the mirror assembly from the cell by removing the
four (4) socket-head cap screws and set on a clean, stable and flat
surface.
6. Look inside the sample cell at the top mirror using a flashlight to
ensure that there is no contamination on the top mirror.
7. Remove dust and other large particles of debris using a bulb blower
or dry compressed air/nitrogen. Pressurized gas duster products are
not recommended as the propellant may deposit liquid droplets onto
the optic surface.
8. Put on clean acetone-impenetrable gloves.
9. Double-fold a clean sheet of lens cleaning cloth and clamp near and
along the fold with the hemostats or fingers to form a “brush.”
10. Place a few drops of isopropyl alcohol onto the mirror and rotate the
mirror to spread the liquid evenly across the mirror surface.
11. With gentle, uniform pressure, wipe the mirror from one edge to the
other with the cleaning cloth only once and only in one direction to
remove the contamination. Discard the cloth.
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.
Careful marking of the mirror orientation is critical to restoring
system performance upon reassembly after cleaning.
The sample cell assembly contains a low-power, 20 mW
maximum, CW Class 3b invisible laser with a wavelength between
800-3000 nm. Never open the sample cell flanges or the optical
assembly unless the power is turned off.
Always handle the optical assembly by the edge of the mount.
Never touch the coated surfaces of the mirror.
Cleaning the top mirror is not recommended. If the top mirror is
visibly contaminated, contact “Service Repair Order” on page
B-25.
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