Name: Microtrac S3500
Brand: Microtrac
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Introduction

9/03 Microtrac S3500 Particle Size Analyzer Operation and Maintenance 1

1. Introduction

1.1 Description

The S3500 uses the phenomenon of scattered light from multiple laser beams projected through a

stream of particles. The amount and direction of light scattered by the particles is measured by an

optical detector array and then analyzed by the Microtrac Software

Particulate samples may be delivered in a wet or dry state, depending on the characteristics of the

sample and the sample delivery equipment configured with the system. The ranges of size

measurements are described in Table 1-1.

Figure 1-1

Microtrac S3500 Analyzer System

Table of Contents4
Introduction7
Description7
Figure 1-1 Microtrac S3500 Analyzer System7
S3500 Configurations and Ranges8
Table 1-1 S3500 Configurations and Ranges8
Safety Considerations9
Electrical9
Hazardous Substances9
Laser Safety10
Figure 1-2 Laser Safety Labels11
Specifications12
Installation15
General15
Selecting a Location15
Unpacking15
Sample Delivery Connections16
Figure 2-1 Wet and Dry Sample Cells16
Fluid Connections for Wet Sample Delivery17
Figure 2-2 Conversion Sequence from Wet to Dry Sample Cells17
Dry Sample Delivery Connections18
Figure 2-3 Typical Fluid Connections, SDC Pictured18
Figure 2-4 Vacuum Connections19
Figure 2-5 Air and Electrical Connections19
Electrical Connections20
Power20
Communications20
Ultrasonic20
Dry System Connections21
Linear Dry Feeder Setup21
Figure 2-6 Linear Dry Feeder with S3500 and SDC21
Figure 2-7 Sample Delivery Tube Fittings, Installation22
Operation23
General23
Sample Delivery23
Figure 3-1 Microtrac Tri-Laser Laser Diffraction Particle Size Measurement23
Figure 3-2 Recirculator Flow Diagram24
Dispersion25
Wet Sample Dispersion25
Dry Sample Dispersion26
Particle Size Measurement26
Background Offset26
Figure 3-3 Eductor Gap and Air Pressure Settings26
Run Data Parameters27
Running a Sample28
Collector Lens Change28
Figure 3-4 Collector Lens Change29
Maintenance30
Introduction30
Cleaning Optical Elements30
Cleaning the Sample Path31
Figure 4-1 Sample Module32
Service34
Hardware, Optics, Sample Delivery34
Electrical34
General Fault Isolation35
Table 5-1 Troubleshooting Chart35
Accessories and Replacement Parts36
Table 5-2 Accessories and Replacement Parts36
Table 5-3 Diagnostic Sample Test Materials36

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Microtrac S3500 Specifications

General

Brand	Microtrac
Model	S3500
Category	Measuring Instruments
Language	English

Microtrac S3500 User Manual

Table of Contents

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Microtrac S3500 Specifications