G3588-68864 - Agilent Technologies 990 User Manual

Micro gas chromatograph
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4
Sample Gas Handling

G3588-68864

G3588-68864
G3588-68864 provides a pressure regulator and needle valve, along with the required mounting
bracket and hardware required for installation.
The block diagram below shows the components and connection points for the G3588-68864
pressure regulator assembly.
Sample
IN
Figure 19.
The pressure regulator has been tested to the fixed specifications shown in
Table 10 Pressure regulator specifications
Attribute
Input
Output
Flow
The sample flows through the pressure regulator and into the rear sample inlet of the GC.
A needle valve provides for venting the sample for draining.
G3588-68864 Installation
The G3588-68864 pressure regulator assembly is supplied fully assembled and ready to install on
the GC. To install the assembly, do the following:
1 Shut down the GC and allow the column and injector to cool.
See
The metal surfaces of the channel and sample inlet can be very hot. Before connecting a tubing
WAR N IN G
for sample, allow the GC components to cool to ambient temperature.
2 At the front of the GC, disconnect any existing tubing for sample from the sample inlet.
Agilent 990 Micro GC User Manual
Sample to rear sample
inlet of GC
Pressure
regulator
G3588-68864 pressure regulator assembly functional block diagram
Shut Down Procedure
on page 41.
Needle
valve
Specification
25 bar (2.5 Mpa)
0.7 bar (10.1 psi or 70 kPa)
20 mL/min
Sample
OUT
(Drain)
Table
10.
53

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