Varian 450-GC, Руководство пользователя

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Installation Installation
Page: Page: 10 10 User User Manual Manual 450-GC 450-GC Varian, Varian, Inc. Inc.
Install Gas Regulators and Set Install Gas Regulators and Set Pressures Pressures
Carrier gas, air and H Carrier gas, air and H
2 2
supplied from cylinders or manifolds should have a supplied from cylinders or manifolds should have a two- two-
stage regulator having a 0 to100 psi low-pressure stage. Set stage regulator having a 0 to100 psi low-pressure stage. Set cylinder regulator cylinder regulator
pressure to match the GC gas pressure to match the GC gas inlet pressures, listed below: inlet pressures, listed below:
Gas Inlet Gas Inlet Pressure Pressure
Carrier Carrier gas gas 500 500 kPa, kPa, 5 5 Bar, Bar, 80 80 psi psi
(maximum 1000 kPa/ 10 Bar / 150 psi) (maximum 1000 kPa/ 10 Bar / 150 psi)
Make-up Make-up 500 500 kPa, kPa, 5 5 Bar, Bar, 80 80 psi psi
(maximum 1000 kPa/ 10 Bar / 150 psi) (maximum 1000 kPa/ 10 Bar / 150 psi)
Air Air 400 kPa, 4 B 400 kPa, 4 Bar, 60 psi ar, 60 psi
(maximum 1000 kPa/ 10 Bar / 150 psi) (maximum 1000 kPa/ 10 Bar / 150 psi)
H H
2 2
300 300 kPa, kPa, 3 3 Bar, Bar, 40 40 psi psi
(maximum 650 kPa/ 6.5 Bar / 100 psi (maximum 650 kPa/ 6.5 Bar / 100 psi ))
Table 2: Gas inlet Table 2: Gas inlet pressure pressure
Calculate a GC pressure drop (restrictions, tubing and EFC) Calculate a GC pressure drop (restrictions, tubing and EFC) of about 200 kPa, of about 200 kPa,
2 Bar, 30 psi for well working EFC’s. 2 Bar, 30 psi for well working EFC’s.
Example: Column pressure neede
Example: Column pressure needed 100 kPa + d 100 kPa + 200 kPa (pressure drop) = Inlet 200 kPa (pressure drop) = Inlet
pressure needed at least 100+200= 300kPa. pressure needed at least 100+200= 300kPa.
Ma Maxim xim um Inlet Pressure: um Inlet Pressure:
Ai Ai r/ r/N N
2 2
/He/Ar: /He/Ar: 1000 1000 kPa / kPa / 10 10 Bar / 15 Bar / 150 0 ps psii
H H
2 2
: 650 kPa / 6.5 Bar / 100 psi : 650 kPa / 6.5 Bar / 100 psi
Connect Gases Connect Gases
Follow the steps below to connect gas supplies to Follow the steps below to connect gas supplies to your GC: your GC:
1. 1. Cut req Cut required uired lengths lengths of chro of chromatograph matographically-cleaned ically-cleaned 1/8 1/8
″″
copper tubing copper tubing
(P/N: 03-918326-00) for the carrier and fuel (P/N: 03-918326-00) for the carrier and fuel gas plumbing. Clean the ends gas plumbing. Clean the ends
of the tubing with a metal file. of the tubing with a metal file.
2. 2. Slide Slide a a 1/8 1/8
″″
Swagelok nut, back ferrule and Swagelok nut, back ferrule and front ferrule over one end of front ferrule over one end of the the
copper tubing and attach to the outlet fitting on copper tubing and attach to the outlet fitting on the cylinder regulator. the cylinder regulator.
3. 3. Push the Push the copper tub copper tubing into ing into the outlet fittin the outlet fitting as far a g as far as it will g s it will go, then p o, then pull ull
back very slightly and tighten 3/4-turn past back very slightly and tighten 3/4-turn past finger-tight with a 7/16 finger-tight with a 7/16
″″
wrench. wrench.