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28 Agilent Gas Sample Selector for 8860 and 8890 User Manual

2 Introduction

Principle of Operation

The Selector connects up to eight sample sources to a multiposition valve. This

valve quickly changes the sample stream to the position specified in the sequence.

Manually controlled needle valves (NV1 and NV2) provide adjustment for the

sampling and purging gas flow rates. In the sample bag version, a downstream

pump draws the sample from the low pressure bag through the GC sampling valve

sample loop. Refer to the flow diagrams below.

Figure 10 Selector flow diagram for the bag version.

Gas Sample Selector (Bag Version)

Filter

Sample Bag #1

Multi Position

Valve

Pump

Module

Filter

Sample Bag #2

Filter

Sample Bag #3

Filter

Sample Bag #4

Filter

Sample Bag #5

Filter

Sample Bag #6

Filter

Sample Bag #7

Filter

Sample Bag #8

Filter

Vent

Actuator Gas

Needle Valve 1

Needle Valve 2

Sample

Valve

Purge

Valve

Actuator

Valve 1

Actuator

Valve 2

Brand	Agilent Technologies
Model	8860
Category	Laboratory Equipment
Language	English

Agilent Technologies 8860 User Manual

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