SS2100 H
2
S TDLAS Gas Analyzer BA02191C
B-2 Endress+Hauser
the sampling lines as contamination free as possible. If mirror contamination
is suspected, see “Cleaning the Mirrors” on page B-3.
To keep the sampling lines clean
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 Laser Power too Low fault
will result.
2. Turn off the sample valve at the tap in accordance with site lock-out,
tag-out rules.
3. Disconnect the gas sampling line from the sample supply port of the
analyzer.
4. Wash the sampling line with isopropyl alcohol or acetone and blow
dry with mild pressure from a dry air or nitrogen source.
5. Once the sampling line is completely free of solvent, reconnect the
gas sampling line to the sample supply port of the analyzer.
6. Check all connections for gas leaks. Using a liquid leak detector is
recommended.
Excessive Sampling Gas Temperatures and
Pressures
The embedded software is designed to produce accurate measurements only
within the allowable cell operating range (see Table A–1 on page A–1).
Pressures and temperatures outside this range will trigger a Pressure Low
Alarm, Pressure High Alarm, Temp Low Alarm, or Temp High Alarm
fault. Refer to Table B–1 on page B–20 for troubleshooting information.
The cell temperature operating range for analyzers that are
equipped with heated enclosures is equal to the enclosure
temperature setpoint ±5 °C.
If the pressure, temperature, or any other readings on the LCD
appear suspect, they should be checked against the specifications
(see Table A–1 on page A–1).
Refer to the Description of Device Parameters for more
information on system faults and alarms.
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