Hach 2100N - Default Chapter; Table of Contents

To Next Page

To Previous Page

TABLE OF CONTENTS

CERTIFICATION ............................................................................................................................................................. 7

SAFETY PRECAUTIONS ............................................................................................................................................... 9

SPECIFICATIONS .......................................................................................................................................................... 11

OPERATION................................................................................................................................................................ 13

SECTION 1 GENERAL DESCRIPTION............................................................................................................ 15

1.1 Instrument Description ............................................................................................................................................. 15

1.2 Standard Accessories ................................................................................................................................................. 15

1.3 Principle of Operation ............................................................................................................................................... 15

1.4 Preparation for Use .................................................................................................................................................... 17

1.4.1 Unpacking ........................................................................................................................................................ 17

1.4.2 Operating Environment .................................................................................................................................... 17

1.4.3 Operating Power Selection .............................................................................................................................. 17

SECTION 2 TURBIDITY MEASUREMENT .................................................................................................... 19

2.1 Operating Controls and Indicators ............................................................................................................................ 19

2.2 Filter Modules ........................................................................................................................................................... 19

2.2.1 Installing the Filter Assembly .......................................................................................................................... 19

2.3 Measuring Turbidity .................................................................................................................................................. 20

2.4 Nephelometric Measurement Procedure ................................................................................................................... 21

2.4.1 Measurement Notes ......................................................................................................................................... 22

2.5 Measurement Techniques .......................................................................................................................................... 22

2.5.1 Cleaning Sample Cells ..................................................................................................................................... 22

2.6 Silicone Oil Procedure .............................................................................................................................................. 23

2.6.1 Applying Silicone Oil ...................................................................................................................................... 23

2.6.2 Preparing Dilution Water ................................................................................................................................. 24

2.6.2.1 Dilution Water Filtration Procedure ................................................................................................. 24

2.6.3 Indexing and Matching Sample Cells .............................................................................................................. 25

2.6.3.1 Indexing a Single Sample Cell ............................................................................................................ 25

2.6.3.2 Matching Sample Cells ....................................................................................................................... 26

2.6.4 Removing Air Bubbles (Degassing) ................................................................................................................ 26

2.6.4.1 Application of Vacuum ....................................................................................................................... 27

2.6.4.2 Addition of Surfactant ........................................................................................................................ 27

2.6.4.3 Using an Ultrasonic Bath .................................................................................................................... 28

2.6.4.4 Application of Heat ............................................................................................................................. 28

2.7 Signal Averaging ....................................................................................................................................................... 29

2.8 Measuring Over-Range Samples ............................................................................................................................... 29

2.8.1 Sample Dilution ............................................................................................................................................... 29

2.9 Using Cell Adapters .................................................................................................................................................. 31

2.9.1 Installing and Removing Cell Adapters ........................................................................................................... 31

2.10 Condensation (Fogging) .......................................................................................................................................... 32

2.11 Calibration Check .................................................................................................................................................... 32

2.12 Representative Sampling ......................................................................................................................................... 32

Tài liệu sưu tầm của Trung Sơn - www.tschem.com.vn - 028.3811.9991 - info@tschem.com.vn