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Refractometer
RA-620/RA-600
Operation Manual
* P 5 9 0 0 0 3 3 0 1 *
Read this operation manual thoroughly before use.
AN 59-00033-01Ver.10

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Table of Contents
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Summarization of Contents

Introduction
Safety Controls
Essential rules to prevent physical or property damage to yourself and others.
About the Manual
Guidance on reading and using the operation manual effectively.
Supplied Parts and Installation
List of included parts and instructions for initial unit setup and power connection.
Parts Configuration
Main Unit Overview
Detailed description of the main unit's front, top, and rear components.
Touchscreen Interface
Explanation of the main window and simple mode displays and their functions.
Preparation for Measurement
Warming-Up Procedure
Recommended warming-up time and its importance for measurement stability.
Reference Water Requirements
Details on recommended water types for check and calibration.
Required Tools for Measurement
Tools recommended for sampling, wiping, and cleaning the prism.
Setting Measurement Conditions
How to set temperature and select measurement contents (nD, Brix).
Measurement
Performing Sample Measurement
Step-by-step guide to measure liquid samples accurately.
Data Management: Reading and Saving
Instructions for reviewing stored data and saving it to a USB flash drive.
Performing a Performance Check
Procedure to verify the refractometer's performance using water.
Unit Calibration Procedure
Steps for calibrating the refractometer for accurate measurements.
Function Tools
Function Window Overview
Introduction to the Function window and its primary menu options.
Critical Angle Image Analysis
Visualizing the detection point for refractive index measurement.
Adjustment Setting for Accuracy
Correcting measured values against a known RI value.
Save and Import Parameters
Saving or capturing measurement data and settings collectively.
Maintenance
Daily Maintenance Procedures
Routine tasks for maintaining the unit before and after measurements.
Periodic Performance Checks
Procedures for verifying refractometer performance and service options.
Replacing the Dustproof Filter
Instructions for cleaning or replacing the intake vent's dustproof filter.
Consumables and Spare Parts
List of consumables and parts available for purchase.
Troubleshooting
Understanding Error Messages
Explanations of error messages and their possible causes and remedies.
Technical Tips for Measurement
Key techniques for specific sample types to improve measurement results.
Technical Information
Terminology and Refractive Index
Definitions of refractive index and related scientific principles.
Available Optional Peripherals
List and description of optional peripherals for purchase.
Technical Specifications
Detailed technical specifications for RA-620 and RA-600 models.
Warranty and After-sales Service
Warranty Period and Details
Duration of warranty and details of after-sales service provided by KEM.
Warranty Exclusion Clauses
Conditions under which the product warranty becomes void.
Disclaimer of Liability
KEM's liability limitations regarding product use and damage.

Table of Contents