Connecting The Sample Returns - Endress+Hauser SpectraSensors J22 TDLAS Operating Instructions Manual

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Connecting the sample supply line
1. Confirm the sample probe is correctly installed at the process sample tap and
that the sample probe isolation valve is closed.
2. Confirm that the field pressure reducing station is installed properly at the
sample probe and that the pressure regulator at the field pressure reducing
station is closed (adjustment knob turned fully counterclockwise).
3. Check that the relief valve vent line is properly installed from the field pres-
sure reducing station to the low pressure flare or atmospheric vent connec-
tion.
4. Determine appropriate tubing route from the field pressure reducing station
to the sample system.
5. Run stainless steel tubing from the field pressure reducing station to the
sample supply port of the sample system.
6. Bend tubing using industrial grade benders and check tubing fit to ensure
proper seating between the tubing and fittings.
7. Fully ream all tubing ends. Blow out the line for 10 to15 seconds with clean,
dry nitrogen or air prior to making the connection.
8. Connect the sample supply tube to the sample system using 6 mm (1/4 in.)
stainless steel tubing (depending on design) compression-type fitting.
9. Tighten all new fittings 1 and 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.
10. Check all connections for gas leaks using a leak detector.

Connecting the sample returns

1. Confirm the low pressure flare or atmospheric vent header shut-off valve is
closed.
2. Determine the appropriate tubing route from the sample system to the low
pressure flare or atmospheric vent header.
3. Run stainless steel tubing from the field pressure reducing station to the
sample supply port of the sample system.
4. Bend tubing using industrial grade benders and check tubing fit to ensure
proper seating between the tubing and fittings.
5. Fully ream all tubing ends. Blow out the line for 10 to15 seconds with clean,
dry nitrogen or air prior to making the connection.
6. Connect the sample supply tube to the sample system using a 6 mm (1/4 in.)
stainless steel tubing compression-type fitting.
7. Tighten all new fittings 1 and 1/4 turns with a wrench from finger tight. For
connections with previously swaged ferrules, thread the nut to the previously
Consult sample probe manufacturer instructions for proper
installation procedures.
The process sample at the sample tap may be at high pressure.
Use extreme caution when operating the sample probe
isolation valve and field pressure reducing pressure regulator.
All valves, regulators, switches, etc. should be operated in
accordance with site lock-out/tag-out procedures.
All valves, regulators, switches, etc. should be operated in
accordance with site lock-out/tag-out procedures.
J22 TDLAS Gas Analyzer
SpectraSensors, Inc.