Table of Contents
1
Safety and Liability
4
1.1
General Information
4
1.2 Liability
4
1.3
Safety Instructions
4
1.4
Symbols used in the operating instructions
4
1.5
Correct Usage
4
2 Tutorial
5
2.1
The Half-Cell Potential Measurement Principle
5
2.2
Factors affecting the Potential Measurement
6
2.3
Application Limits of the Potential Measurement Technique
6
2.4
The Electrical Resistivity Measurement Principle
7
2.5
Influence of Rebars on Electrical Resisitivity Measurements
7
2.6
Effect of Electrical Resistivity on Half-cell Potential Measurements
7
3
Getting Started
8
3.1
Prepare the electrode(s)
8
3.2
Connect the electrode / probe to the indicating device
8
3.3
Power ON and select the correct operating mode
9
3.4
Functional check of the equipment
10
4
Real Tests – Potential Measurements
10
4.1
Planning and preparation
11
4.2
Selecting the correct grid
11
4.3
Choosing the appropriate electrode
11
4.4
Connect to the reinforcement
11
4.5
Functional check of the instrument
11
4.6
Preparation of the test surface
12
4.7
Check to see if coatings need to be removed
12
4.8
Pre-moistening the concrete surface
12
4.9
Carrying out the measurement
13
4.9.1
Reading the display screen
13
4.9.2
Measuring with the Rod Electrode
14
4.9.3
Measuring with the Wheel Electrode
15
4.9.4
Re-opening an object
15
4.9.5
Overwriting or deleting readings
15
4.10 Evaluation
16
4.10.1
Example of a typical distribution
16
4.11 Confirmation and refining of hotspot positions
17
