Agilent Technologies InfinityLab LC Series Manuale utente

1260 Infinity II Degasser

Agilent InfinityLab LC Series

User Manual

1260 Infinity II Degasser User Manual

Notices

Document Information

Document No: SD-29000216

Part No: G7122-90000 Rev. C

EDITION 03/2020

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1260 Infinity II Degasser User Manual 3

In This Guide...

This manual covers the Agilent InfinityLab LC Series 1260 Infinity II Degasser (G7122A).

1Introduction

This chapter gives an introduction to the module, the operations modes and the

module control.

2 Site Requirements and Specifications

This chapter provides information on environmental requirements, physical and

performance specifications.

3 Using the Degasser

This chapter provides information for optimized usage of the module.

4Troubleshootingand Diagnostics

Overview about the troubleshooting and diagnostic features.

5 Maintenance

This chapter describes the maintenance of the module.

6 Parts for Maintenance and Repair

This chapter provides information on parts for maintenance.

7IdentifyingCables

This chapter provides information on cables used with the Agilent InfinityLab LC

Series modules.

8 Hardware Information

This chapter describes the detector in more detail on hardware and electronics.

9Appendix

This chapter provides additional information on safety, legal and web.

1260 Infinity II Degasser User Manual 4

Contents

1Introduction6

Introduction to the Degasser 7

Product Description 8

Features 9

Operating Principle 10

Leak and Waste Handling 11

2 Site Requirements and Specifications 15

Site Requirements 16

Physical Specifications 19

Performance Specifications 20

3 Using the Degasser 21

Magnets 22

Turn on/off 23

Status Indicators 25

When to Use a Degasser? 26

Solvent Information 28

Prevent Blocking of Solvent Filters 34

4 Troubleshooting and Diagnostics 35

Module Status Indicator 36

Hardware Symptoms 37

1260 Infinity II Degasser User Manual 5

5 Maintenance 40

Warnings and Cautions 41

Simple Repairs - Maintenance 43

Clean the Instrument 44

Assemble the Main Cover 45

Check and Change the Power Fuses 46

6 Parts for Maintenance and Repair 48

Cover Parts 49

Accessory Kit Contents 51

7IdentifyingCables52

Cable Overview 53

Analog Cables 55

Remote Cables 57

CAN/LAN Cables 61

RS-232 Cables 62

USB Cables 63

8 Hardware Information 64

Electrical Connections 65

Interfaces 67

Instrument Layout 69

9Appendix70

General Safety Information 71

Waste Electrical and Electronic Equipment (WEEE) Directive 77

Radio Interference 78

Sound Emission 79

Agilent Technologies on Internet 80

1260 Infinity II Degasser User Manual 6

1Introduction

Introduction to the Degasser 7

Product Description 8

Features 9

Operating Principle 10

Leak and Waste Handling 11

Waste Concept 14

This chapter gives an introduction to the module, the operations modes and the

module control.

1260 Infinity II Degasser User Manual 7

1Introduction

Introduction to the Degasser

The Agilent 1260 Infinity II Degasser G7122A comprises a 4-channel vacuum

container, including 4 tubular plastic membranes, and a vacuum pump. When the

degasser is switched on, the control circuit turns on the vacuum pump which

generates a partial vacuum in the vacuum container. The pressure is meassured

by a pressure sensor. The vacuum degasser maintains the low pressure by a

controlled leak in the air inlet filter and a regulation of the vacuum pump using the

pressure sensor.

The LC pump draws the solvents from their bottles through the special tubular

plastic membranes of the vacuum container. As the solvents pass through the

vacuum tubes any dissolved gas in the solvents permeates through the

membranes into the vacuum container. The solvents will be almost completely

degassed when leaving the outlets of the degasser.

Figure 1 Overview (only one of the four solvent channels is shown)

Pump

Sensor Control

circuit

Vacuum

pump

4 Tubular

plastic

membranes

Vacuum container

Solvent

1260 Infinity II Degasser User Manual 8

1Introduction

Product Description

The 1260 Infinity II Degasser is a standalone module for systems without internal

Degasser or for usage with special applications. It reduces baseline noise and

quenching effects. In fluorescence detection, lower detection limits and

long-term baseline stability are achieved with the degasser. Degassing is strongly

recommended for GPC/SEC applications using refractive index detection.

Figure 2OverviewoftheDegasser

Status indicator

Power switch

Leak drain

1260 Infinity II Degasser User Manual 9

1Introduction

Features

•Robust design for high instrument uptime. The degassing principle is based

on passing solvents through a membrane tube that is permeable to gas but

not to liquid, and kept at a constant vacuum level.

•Reduced baseline noise and quenching effects through high degassing

capacity. In fluorescence detection, this results in lower detection limits and

long-term baseline stability.

•Strongly recommended for GPC/SEC applications using refractive index

detection.

1260 Infinity II Degasser User Manual 10

1Introduction

Operating Principle

Once the degasser started, the status indicator is amber ("Not-ready") and the

degasser vacuum pump tries to reach a target pressure below 100 mbar/hPa. If

this limit cannot be reached within 16 minutes, an error is thrown and the status

indicator switches to red ("Error mode"). As soon as the limit has been reached,

which typically happens within about 8 minutes, the pump goes to a continuous

regulation mode, where the pump tries to regulate to 100 mbar/hPa target

pressure. If this pressure limit cannot be reached, it is increased stepwise to a

maximum of 160 mbar and the status indicator switches to amber. If a stable

pressure between 100 mbar and 160 mbar max. can be kept, the status indicator

switches off ("Idle"). If the maximum limit of 160 mbar is exceeded, the status

indicator switches to red and an error is thrown.

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