Yokogawa EXAxt PH450 4-Wire Analyzer for pH and ORP - Manual (Page 5)

IM 12B07C05-01E
iii
IM 12B07C05-01E
4th Edition: Mar. 2012(YK)
All Rights Reserved, Copyright © 2007, Yokogawa Electric Corporation
TABLE OF CONTENTS
PREFACE
1. INTRODUCTION AND GENERAL DESCRIPTION .....................................................1
1-1. Instrument check ...................................................................................................1
1-2. Application .............................................................................................................1
2. GENERAL SPECIFICATIONS OF EXAxt PH450G .....................................................2
3. INSTALLATION AND WIRING .....................................................................................5
3-1. Installation and dimensions ...................................................................................5
3-1-1. Installation site ..........................................................................................5
3-1-2. Mounting methods .....................................................................................5
3-2. Wiring ....................................................................................................................7
3-2-1. Preparation ................................................................................................7
3-2-2. Cables, Terminals and glands ..................................................................8
3-3. Wiring the power supply ........................................................................................9
3-3-1. General precautions ..................................................................................9
3-3-2. Access to terminal and cable entry .........................................................10
3-3-3. AC power ................................................................................................10
3-3-4. DC power ................................................................................................10
3-3-5. Grounding the housing ............................................................................11
3-3-6. Switching on the instrument ....................................................................11
3-4. Wiring the contact signals....................................................................................12
3-4-1. General precautions ................................................................................12
3-4-2. Contact outputs. ......................................................................................12
3-4-3. Contact intput. .........................................................................................12
3-5. Wiring the mA-output signals .....................................................................12
3-5-1. General precautions ................................................................................12
3-5-2. Analog output signals ..............................................................................12
3-6. Wiring the sensor system ....................................................................................13
3-6-1. Impedance measurement jumper settings .................................................... 13
3-7. Sensor wiring .......................................................................................................13
3-7-1. Connection cable ....................................................................................13
3-7-2. Sensor cable connection with special grommet (450G-
□
-A version) .....16
3-7-3. Sensor cable connections using junction box (BA10) and extension
cable (WF10) ............................................................................................17
4. OPERATION OF EXAxt PH450G ..............................................................................19
4-1. Main display functions .........................................................................................19
4-2. Trending graphics ................................................................................................19
4-3. Zoom in on details ...............................................................................................19
4-3-1. Actual mA1 ..............................................................................................19
4-3-2. Actual mA2 ..............................................................................................19
4-3-3. Zero .........................................................................................................19
4-3-4. Slope .......................................................................................................20