What device is typically used to establish a connection between a reference electrode and the surface?

The voltage meter is an essential device used to establish a connection between a reference electrode and the surface in corrosion control applications. When measuring the potential of a pipeline's surface, it is crucial to obtain accurate voltage readings to assess the corrosion status. The reference electrode, which provides a stable reference potential, must be connected appropriately to measure the potential difference between it and the pipeline surface effectively.

Using a voltage meter allows for the measurement of the electrical potential in volts, making it possible to detect any deviations or shifts in potential that could indicate corrosion processes at work. A voltage meter specifically designed for these measurements can provide insights into the effectiveness of cathodic protection systems and help prevent pipeline deterioration.

While other devices mentioned like ammeters, multimeters, or ohmmeters have their specific functions, they are not typically employed for this particular task of measuring potential. An ammeter measures current, a multimeter can measure various electrical parameters including voltage but is less frequently used solely for potential measurements, and an ohmmeter measures resistance. Thus, the voltage meter remains the standard tool for establishing a connection in this context.