SS2100i-2 TDLAS Gas Analyzer Operating Instructions
Endress+Hauser 45
To clean the mirror, refer to the following instructions. To replace a stainless steel mirror, refer to Replacing the
stainless steel mirror → .
6.5.3 Cleaning the mirror
Endress+Hauser does not recommend cleaning the top mirror. If the top mirror is visibly contaminated, refer to
Service → .
Careful marking of the mirror orientation is critical to restoring system performance upon reassembly after
cleaning.
Always handle the optical assembly by the edge of the mount. Never touch coated surfaces of the mirror.
Pressurized gas duster products are not recommended for cleaning components. The propellant may deposit
liquid droplets onto the optic surface.
Never rub an optical surface, especially with dry tissues, as this can mar or scratch the coated surface.
To clean the mirror, follow the instructions for purging the sample conditioning system and removing the mirror
assembly, cleaning the mirror, and replacing the mirror, below.
INVISIBLE LASER RADIATION — The sample cell assembly contains a low-power, 10 mW maximum, CW Class
3B invisible laser with a wavelength between 750 to 3000 nm.
Never open the sample cell flanges or the optical assembly unless the power is turned off.
Purge the sample conditioning system and remove the mirror assembly
All valves, regulators, switches, etc. should be operated in accordance with site lockout/tagout procedures.
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 of the sample and
prescribed safety precautions before operating the analyzer.
1. Power down the analyzer following the procedure outlined in Powering Down the Analyzer in the Standard
documentation for this analyzer.
2. Disconnect the sample supply and return tubes from the analyzer.
3. If possible, purge the system with nitrogen for 10 minutes.
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 socket-head cap screws and set on a clean,
stable and flat surface.
Clean the mirror
1. For the 28 m and 8 m cells, use a flashlight to examine the top mirror inside the sample cell. Ensure that there is
no contamination on it. For 0.8 m cells, skip and proceed to the next step.
2. Using a bulb blower or dry compressed air/nitrogen, remove dust and other large particles of debris.
3. Put on clean acetone-impenetrable gloves.
4. 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.”
5. Place a few drops of isopropyl alcohol onto the mirror and rotate the mirror to spread the liquid evenly across the
mirror surface.
6. 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.
7. Repeat with a clean sheet of lens cleaning cloth to remove the streak left by the first wipe.
8. Repeat step 7, if necessary, until there is no visible contamination on the mirror.
To Next Page
Loading...
