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1. Overview

TI 11B08A01-01E

1.3 Auxiliary Hardware

(1) Cylinders (carrier gas, standard gases, etc.)

Thesecylindersarelledwithacarriergasorstandardgas.

Themaximumllingpressureislimitedto15MPaconsideringthestrengthofthecylinders.

(2) Regulator for cylinder

This valve reduces a cylinder pressure to a safe degree to facilitate handling. The valve is directly

mounted to the cylinder.

(3) Stop valve

This valve shuts down the lines for the sample gas, instrument gas, and so on. It is operated

manually.

(4) Dehumidier

Any moisture in the carrier gas affects the columns. Therefore, if the carrier gas contains

moisture over 10 ppm, it is recommended to use a desiccant, such as a molecular sieve, to

prevent deterioration of the columns.

(5) Vent stacks

Thesearepipestodischargesamplebypassvent,samplevent,backushvent,foreushvent,

detector vent, measurement gas vent, and others to the atmosphere collectively.

Directtheexhaustgastoanareawherethegassufcientlydispersesanddiffusesbefore

discharging.

(6) Regulator for sample

Thisvalvereducesthesamplepressuretoaspecieddegree.

Tovaporizealiquidsample,usearegulatorwithasteam-heatedvaporizer.

(7) Pipings

The pipes for the sample inlet, carrier gas inlet, standard gas inlet, air for valve driving, air for

FID/FPD, FID/FPD hydrogen, steam, sampling bypass, and various vents are provided.

(8) Joints

The joints are used to connect pipes.

1.4 Gases Required for Operation

Thefollowinggasesarerequiredfortheanalyzer:

(1) Sample gas

The gas to be analyzed from the process line

Sep. 07, 2017-00

YOKOGAWA GC8000 User Manual

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