YOKOGAWA PH8EHP, User Manual, Page: 8 / 27

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IM 12B7J2-01E
<CONTENTS>
11th Edition : Nov.20,2018-00
Model PH8EHP
pH Sensor for High Purity Water
CONTENTS
IM 12B7J2-01E 11th Edition

INTRODUCTION .............................................................................................i

For the safe use of this equipment .............................................................ii

After-sales Warranty ....................................................................................v
1. Specification ............................................................................................. 1-1
1.1 Standard Specifications ...................................................................................1-1
1.2 Model and Suffix codes ....................................................................................1-2
1.3 External Dimensions ........................................................................................1-4
2. Installation ................................................................................................. 2-1
2.1 Preparation for Installation ..............................................................................2-1
2.1.1 Unpacking and Inspection .................................................................2-1
2.1.2 Mounting Glass Electrode ..................................................................2-2
2.1.3 Mounting Liquid Junction ...................................................................2-2
2.1.4 Installing Holder .................................................................................2-2
2.1.5 Installing Associated Instruments ......................................................2-2
2.2 pH Sensor Cable Wiring Procedure ................................................................2-3
2.2.1 Connecting Sensor Cable ..................................................................2-3
2.2.2 Installing the sensor ...........................................................................2-4
3. Maintenance on operation ....................................................................... 3-1
3.1 Names of Component .......................................................................................3-1
3.2 Operation and Periodic Maintenance .............................................................3-2
3.2.1 Calibrating pH Sensor Using Buffer Solutions ...................................3-2
3.2.2 Replenishment of KCl Solution ..........................................................3-2
3.2.3 Cleaning Glass Electrode and Liquid Junction ..................................3-2
3.3 Replacing Consumable Parts ..........................................................................3-2
3.3.1 Replacing Glass Electrode ................................................................3-2
3.3.2 Replacing Liquid Junction ..................................................................3-2
3.3.3 Replacing O-rings for Glass Electrode ..............................................3-3
Customer Maintenance Parts List ...................................... CMPL 12B05J02-01E
Revision Information ...............................................................................................i