Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 53)

<1. Overview>
1-26
IM 11B08A01-01E
• Air for driving the solenoid valve and for purging/cooling the electric chamber and ovens 1 to
3: Rc1/4 or NPT1/4(F)
(Use the pipe of 1/2 inch or more.)
• Inlet and outlet of sample gases 1 to 2 respectively: 6-mm or 1/4-inch tube
• Inlet of carrier gases 1 to 2 (except for H2): 6-mm or 1/4-inch tube
• Inlet of H2 for carrier gas, combustion gas, make-up gas: 6-mm or 1/4-inch tube
• Inlet of make-up gas (except for H2): 6-mm or 1/4-inch tube
• Inlet of combustion air: 6-mm or 1/4-inch tube
• Outlet of atmospheric-pressure balancing valves 1 to 2: 6-mm or 1/4-inch tube
The following parts are under the cover on the right side of the oven unit.
• Hydrogen limiting unit
• Pressure regulator for carrier gases 1 to 2 (in the large isothermal oven or isothermal oven)
• Restrictors 1 to 4 (in the large isothermal oven or isothermal oven)
The values of each setting pressure and fl ow rate are described in the operation manual. They
also are checked on the operation condition confi guration screen of the GC-HMI (touch panel)
EtherLCD.
Refer to Figures 1.8 to 1.10.
A
Connection:
6 mm or
1/4 inch tube
Sample 2 (IN)
Sample 1 (OUT)
Carrier gas 1(except for H 2 )
Pressure regurator for carrier gas 1
Pressure regurator for carrier gas 2
Restrictor 1
Restrictor 2
Restrictor 3
Restrictor 4
Restrictor 5
Restrictor 6
Sample 2 (OUT)
Sample 1 (IN)
Combustion air
Carrier gas 2(except for H
2
)
Air output (Atomospheric balance valve 2)
Air output (Atomospheric balance valve 1)
Pressure regurator for utility gas (1 to 4)
Hydrogen kimiting unit
Inner wall of
the large
isothermal oven
Pressure gauge for
utility gas (1 to 4) Pressure gauge for
carrier gas (1, 2)
Pressure regurator
for carrier gas (1, 2)
A
A-A
Figure 1.8 Pressure and fl ow control section of the large isothermal oven
2nd Edition : May 11, 2012-00