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Contents

MXD70 Conductivity Setup and

Operating Guide

- 3 -

Contents

Preface ......................................................................................................................... 1

Contents ..................................................................................................................... 3

Conductivity Input Card Specification ............................................................ 5

Range & Sensor Compatibility Tables ....................................................... 6

Installation and Choice of Conductivity Sensors ........................................ 7

Care and Maintenance of Conductivity Sensors ................................... 7

MXD73 Termination Information ............................................................... 9

MXD75 Termination Information ............................................................ 11

MXD75 Extension Cables ............................................................................ 12

Temperature Sensor Connections ........................................................... 13

Conductivity Input Channel Setup ................................................................ 15

Units .................................................................................................................... 16

Cell Constant ................................................................................................... 16

Temperature Input Sensor ......................................................................... 17

Temperature Compensation ..................................................................... 18

Simulated Input .............................................................................................. 20

Calibration .............................................................................................................. 21

Table of calibration resistance values .................................................... 22

Calibration Menu ........................................................................................... 23

Calibration History ......................................................................................... 26

Front Screen Calibration Access ............................................................... 26

Calibration Reminder ................................................................................... 27

Resetting the User Calibration .................................................................. 28

Conductivity USP Operation ............................................................................ 31

Appendix A - Ultra Pure Water ........................................................................ 33

Appendix B - Temperature Coefficient ........................................................ 35

Temperature Data ......................................................................................... 35

Appendix C - Instrumentation Configuration ........................................... 37

Appendix D - Error Messages .......................................................................... 43

Fault Finding .......................................................................................................... 55

Index ......................................................................................................................... 60

LTH Electronics MXD73 User Manual

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