App.b-3, Instrument terminology, App.b – Yokogawa GC8000 Process Gas Chromatograph User Manual

Page 436

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<Appendix B Terminology>

App.B-3

IM 11B08A01-01E

Instrument Terminology

Term

Description

Notes

ASET

Analyzer server engineering terminal software

PC software which operates and displays analyzers

ASGW

Analyzer server gateway software

Exchanges data with the upper system by using the STARDOM

FCJ.

ASIU

Analyzer server interface unit software

Serves as an interface with the network for analog output signals of

fi eld devices except for process gas chromatographs or input/output

of contact signals.

DCS

Distributed control system

The upper system of analyzers

EPC

Electronic pressure control

EtherLCD

A function which consolidates the settings for display of I/O

and Ethernet connection status of analyzers under connection;

operation of I/O, user program, and detectors; and parameters of

hardware confi guration, analysis method, and I/O, which are mainly

used for maintenance among the general settings from the GC-HMI.

This is equivalent to the functions of EtherLCD (display and

operation), which is the human-machine interface of the GC1000

Mark II, excluding operation and display of analysis data.

User-level settings for EtherLCD are independent of other screens

of the GC-HMI (analyzer overview, etc.), and so they must be set

separately.

FID

Flame ionization detector

FPD

Flame photometric detector

GC-HMI

GC human-machine interface

Displays the status of the GC8000 analyzer, operates it, changes its

settings, and displays analysis data.

12.1-inch color LCD touch panel on the GC8000

GCSMP
LSV

Liquid sampling valve

MC

Methane converter (methanizer)

PCAS

PC analyzer server software

PC software which manages the network and automatically saves

data

RV

Rotary valve

TCD

Thermal conductivity detector

Temperature

Protection Circuit

A circuit for turning off the heater to prevent overheating

Column Switching

Valve

A valve for switching columns

It uses RV.

Carrier Gas

Gas for carrying sample gas of the measurement target from the

sample valve to columns and detectors. H

2

, He, Ar, and N

2

are used

as the carrier gas.

Sample Valve

A valve for taking in sample gas.

It uses RV (for gas/liquid) or LSV (for liquid).

Illuminance

The intensity of incident light on a plane surface, based on human

perception of brightness

Illuminance of 1 lux is a fl ux of light of 1 lumen (lm) on a plane

surface of 1 m

2

. Unit: lx

Hydrogen Limiting

Unit

Consists of an air operation valve and a fl ow controller.

It limits the fl ow of hydrogen (300 ml/min for each oven) or shuts

it off. To meet explosion-proof requirements, a regulator must be

installed and provide hydrogen at 500 kPa to the GC8000.

Splitter

A fl ow splitter

2nd Edition : May 11, 2012-00

App.B

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