Yokogawa PH72 Personal pH/ORP Meter User Manual
User’s manual, Model ph72 personal ph/orp meter
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Table of contents
Document Outline
- CONTENTS
- Preface
- 1. Outline
- 1.1 Features
- 1.2 Specifications
- 1.3 When You Receive the PH72 Meter Package
- 1.4 PH72 Meter Kit
- 1.5 PH72 Meter — Part Names and Functions
- 1.6 Sensors — Types, Part Names and Functions
- 1.7 Options (Available Separately)
- 1.8 Spare Parts
- 2. Preparation
- 2.1 Installing the Batteries
- 2.2 Connecting the Sensor Cable
- 2.3 Setting the Date and Time
- 2.4 Selecting pH or ORP Measurement
- 2.5 Wetting Cap
- 2.6 Manual Temperature Setting
- 2.7 pH Calibration
- 3. Measurement
- 3.1 Precautions
- 3.2 Measurement Procedures
- 3.3 Measurement Display Panel
- 3.4 Saving a Measured Value
- 4. Calibration
- 4.1 Automatic Calibration
- 4.2 Manual Calibration
- 5. Keypad and Display Functions
- 5.1 Keypad Functions
- 5.2 Display Items
- 5.3 Function Mode
- 6. Maintenance
- 6.1 For Optimum Meter Performance
- 6.2 pH Electrode Cleaning
- 6.3 Sensor Replacement
- 6.4 Rehydrating the Glass Electrode
- 6.5 Replenishing the Electrode with Filling Solution (KCl solution)
- 6.6 Cleaning and Drying Connectors
- 6.7 Storage and O-ring/Gasket Replacement
- 7. Troubleshooting
- 7.1 Causes of Abnormal Readings and Errors
- 7.2 Error Messages, Possible Causes, and Corrective Actions
- 7.3 Causes of Abnormal Measured Values
- 7.4 Other Conditions
- 8. ORP Meter
- 8.1 ORP Measurement
- 8.2 Maintenance of ORP Sensors
- 8.3 Checking the ORP Sensor
- 9. Technical Information
- 9.1 Measurement Principle of pH Meter (Glass Electrode Method)
- 9.2 Relationship between EMF of Glass Membrane and pH Value
- 9.3 Temperature Compensation
- 9.4 The Asymmetry Potential
- 9.5 The Alkaline Error
- 9.6 The Acid Error
- 9.7 Calibration Calculation
- 9.8 ORP (Oxidation-Reduction Potential)
- 9.9 Reference Electrode
- 9.10 Wetted Part Materials of Sensors
- 9.11 References
- Appendix
- MSDS (Material Safety Data Sheet)
- Revision Record