9
7890 Series GC Site Preparation Checklist
Issued: 09-Dec-2015, Revision: 1.8
Copyright
2013
Agilent Technologies
Page 9 of 15
28B
29B
Gas Supply Pressures
13B
Special Notes
1.
Refer to the "General Requirements" section under "Gas Supplies" in the "Agilent GC, GC/MS and
ALS Site Preparation Guide" for more detail.
2.
The following tables list minimum and maximum pressures in psi for each electronic pneumatic
control module (EPC). These requirements are for the input to the EPC module located at the
back of the gas chromatograph. Conversions: 1 psi = 6.8947 kPa = 0.068947 Bar = 0.068 ATM.
30B
Detectors
FID
NPD
TCD
ECD
FPD
Hydrogen
35-100 35-100
45-100
Air
55-100 55-100
100-120
Make up
55-100 55-100 55-100
55-100
55-100
Reference
55-100
31B
Auxiliary EPC and Pneumatic Control channels
The minimum supply pressure for AUX and PCM modules is 20 psi greater than pressure used in your
method. For example, if you need a pressure of 20 psi for the method, the supply pressure must be at
least 40 psi.
AUX EPC
PCM 1
PCM 2 or PCM Aux
Maximum
pressure
120
120
120 with Forward pressure control
50 with Back pressure control
32B
Inlets
The minimum supply pressure for inlet modules is 20 psi greater than pressure used in your method.
For example, if you need a pressure of 40 psi for the method, the supply pressure must be at least 60 psi.
SSL 150
SSL 100
MMI
PPIP
PCOC
PTV
Carrier max
170
120
170
120
120
120
