Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 124)

<2. Installation, Piping, and Wiring>
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IM 11B08A01-01E
2.2 Piping
IMPORTANT
• Do not remove the blind plugs at the analyzer piping connections until starting piping
work to prevent deterioration of the columns. On the condition that carrier gas does not
be supplied after the blind plugs taken out or during out of operation, the column has the
risk of deterioration. In these condition, fi x the the blind plugs at each vent with carrier gas
enclosed.
• Use an anti-corrosion material for the pipes and pipe fi ttings.
• Never use pipes with too large a diameter for the sample inlet piping, for reducing dead
time. However, use a little larger pipe for the exhaust line so as not to apply back pressure to
the venting lines.
• Use pipes and pipe fi ttings free from interior contamination such as grease, oil or other
substances. The contamination damage the analyzer. Before connecting the pipes,
completely air-purge their interiors.
• Carefully connect the pipes so that there is no leakage from the pipe connections such as
the joints.
• Use fi lters or other appropriate pipe fi ttings to prevent dust, moisture, or other foreign matter
from getting into the analyzer.
2.2.1 Types of Piping and Installation
The types of piping are shown below.
Note that the types of piping and quantities of individual pipes required vary with the
specifi cations such as the analyzer type and detector type (TCD, FID, or FPD).
See the fl ow sheets in the “Operation Data” for implementing piping.
Control unit
(A) Air output for stream valve 1 to 8 (AIR OUT 1 to AIR OUT 8)
Isothermal oven, large isothermal oven
(B) Purge air (PURGE AIR)
(C) Inlet/outlet of sample gas (SAMPLE 1 IN, SAMPLE 2 IN, SAMPLE 1 OUT, SAMPLE 2 OUT)
(D) Carrier gas (CARRIER 1, CARRIER 2)
(E) Hydrogen gas for combustion (H2)
(F) Make-up gas (MAKE UP)
(G) Air for combustion (BURNER AIR)
(H) Air output (ATM 1, ATM 2)
(J) FID vent (FID 1, FID 2)
(K) FPD vent (FPD 1)
(L) TCD vent (TCD1, REF.1, TCD2, REF.2)
(M) Vent (VENT 1 to VENT 10)
Analyzer base sampling system (GCSMP)
(1) Sample inlet (STREAM #1 to STREAM #12)
(2) Standard-gas inlet (STANDARD #1 to STANDARD #3)
(3) Sample bypass vent (STREAM #1 B/P VENT to STREAM #12 B/P VENT)
(4) Sample vent (SAMPLE VENT 1 to SAMPLE VENT 3)
(5) Condensate drain (CONDENSATE OUT)
2nd Edition : May 11, 2012-00
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