Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 59)

<1. Overview>
1-32
IM 11B08A01-01E
 Limitation in Selecting a Sampling System
Sample properties that can be conditioned in the GCSMP are as follows. In addition, the
specifi cations for the maximum number of air-operated valves are limited. The sample properties
and specifi cations exceeding these limits necessitate preparing an external sampling system.
Table 1.2 Sample Properties
Sample Sample valve Temperature Pressure Dust Mist Boiling point
Gas Rotary sampling valve 150°C or less 0.01 to 3 MPa 0.01 g/m
3 (stp) or
less
None ―
Liquid
Rotary sampling valve
Normal
temperature 0.2 to 3 MPa
None ― 270°C or less
Liquid sampling valve
with a vaporizer
150°C or less 0.2 to 3 MPa None ― 450°C or less
Note: In the case of ATEX, the rotary sampling valve can not be used as the liquid sampling valve.
Refer to Table 1.3 for the limitations on specifi cations with the GCSMP.
Table 1.3 The limitations on specifi cations with the GCSMP
Purpose of air-
operation valve
Number of Mountable Valves
Type 1 Type 2
Automatic stream
switching valve
Max. 7 in total *1
Stream for measurement: 1 to 6
Stream for calibration and
validation: 1 to 3
Max. 4 in total *1
Stream for measurement: 1 to 3
Stream for calibration and
validation: 1 to 3
Atmospheric-pressure
balancing valve
Max. 2 Max. 1
*Max. 1 per 1 GCM
*1 If the number of automatically switched streams exceeds the above limitation, use an external sampling system.
*2 The GCSMP is not mounted on Type 3.
Table 1.4 shows the limitation by the analyzer on specifi cations with an external sampling system
Table 1.4 The limitation by the analyzer on specifi cations with an external sampling system
Automatic stream
switching valve
Type of Stream Valves
Number of
Streams *1
Remarks
One-to-one output (air) *2 1 to 8
One-to-one output (DO) *2
1 to 12 DIO card: 3 ch × 4 (Max. 12 ch)
1 to 20 DO card: 5 ch × 4 (Max. 20 ch)
Binary output (air) *2 *3 1 to 31
4 bits: 1 to 15
5 bits: 16 to 31
Purpose of air-
operation valve
Number of Mountable Valves
Type 1 Type 2
Atmospheric-pressure
balancing valve
Max. 2 Max. 4
*Max. 1 per 1 GCM
*1 Stream for calibration and validation is included.
*2 Air output from the analyzer is 350 kPa.
*3 Only 1 GCM can be set up for an analyzer in the case of binary output (air). (Multiple GCMs are not possible.)
1.11 Human Machine Interface
1.11.1 Types of GC8000 Human Machine Interface
The GC8000 has the following three operation interfaces.
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
ASET Analyzing server engineering terminal software
PC software which displays status of analyzers and operates analyzers
PCAS PC analyzer server software
PC software which manages the network and automatically saves data
2nd Edition : May 11, 2012-00