SS2100 TDLAS H
2
S Gas Analyzer BA02191C
3-18 Endress+Hauser
a. Bend tubing using industrial grade benders, check tubing fit to
ensure proper seating between the tubing and fittings.
b. Fully ream all tubing ends.
c. Blow out the line for 10 to 15 seconds with clean, dry nitrogen
or air prior to making the connection.
4. Connect the sample return tube to the SCS using the 1/2 in. or 1/4
in. stainless steel compression-type fittings provided.
5. Tighten all new fittings 1-1/4 turns with a wrench from finger tight.
For connections with previously swaged ferrules, thread the nut to
the previously pulled up position, then tighten slightly with a wrench.
Secure tubing to appropriate structural supports as required.
6. Check all connections for gas leaks. Using a liquid leak detector is
recommended.
Conditioning the SCS Tubing
Newly installed systems invariably have some trace contaminants and/or are
intended for measuring trace amounts of gas constituents that tend to cling to
system walls resulting erroneous readings if the constituents are not in
equilibrium with the system walls. Therefore, once the analyzer and SCS are
completely connected, the entire system (i.e., from the sample source valve to
the vent or return) should be conditioned by flowing sample gas through the
system for up to 12 hours (or until the reading stabilizes) after the system is
powered up and before actual readings are taken. Progress of the system
conditioning can be monitored via the gas concentration readings. Once the gas
constituents have reached equilibrium with the system walls, the readings
should stabilize.
Heat Trace Bundle Sleeve (Optional)
The Heat Trace Bundle Sleeve, manufactured by others, is an option for the
Endress+Hauser analyzer. Refer to Figure A–9 on page A–11.
In certain applications, vents from the analyzer system (relief
vent/bypass vent/cell vent) may have individual ¼ in. tubing
connections. These vents sho u ld b e rout e d to an atmospheric vent
or low pressure flare header. In other applications, the previously
mentioned analyzer system vents are routed to a common ½ in.
tubing connection within the sample conditioning system. This
common vent should be routed to an atmospheric vent or low
pressure flare header.
Do not exceed 10 PSIG (0.7 barg) in sample cell. Damage to cell
may result.