SS2100r H
2
S Analyzer
B–6 4900002189 rev. D 3-7-18
3. If possible, purge the system with nitrogen for 10 minutes.
4. Carefully mark the orientation of the mirror assembly with the
permanent ink marker on the cell body.
5. Gently remove the mirror assembly from the cell by removing the 4
(28 m or 8 m measurement cell) or 6 (0.8 m measurement cell)
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.”
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 MAX, 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.
SpectraSensors does not recommend cleaning the top mirror. If
the top mirror is visibly contaminated, contact your factory
service representative.
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