The term Floating In measurement and automation technology, this term refers to the galvanic isolation between two electrical circuits. In this process, information or a switching state is transmitted without a direct electrical connection between the transmitter and the receiver. This prevents unwanted compensation currents, protects connected systems, and improves the immunity to interference of the entire measurement application.
Potential-free signal transmission is used wherever different voltage levels, ground potentials, or electrical interference may occur. Galvanic isolation reduces measurement errors and reliably protects sensitive sensors, measuring instruments, and control and automation systems.
The technical implementation is achieved using special coupling elements that transmit information without allowing a direct current flow between the circuits involved. Commonly used components include:
- Relay On Magnetic-Inductive Signal Transmission
- Optocoupler for the optical separation of input and output signals
- Transformers for the inductive transmission of energy and signals
- Isolation amplifier for the secure transmission of analog measurement signals
These technologies ensure reliable signal transmission even in electrical environments with high levels of interference or different ground references.
In the measurement data acquisition and data logging systems from Delphin Technology Isolated and galvanically separated inputs and outputs play an important role. They enable the reliable acquisition of voltage, current, temperature, and process signals, even in complex industrial plants or test benches. Isolating the signal paths minimizes interference, increases measurement accuracy, and improves operational safety.
Potential-free signal processing is often a fundamental requirement, particularly in applications involving energy and drive technology, product testing, or the monitoring of electrical systems. It ensures that measurement data is recorded accurately and that connected systems remain protected against overvoltage, ground loops, and electrical interference.
Potential-free signal transmission enables safe and interference-free communication between electrical systems. It protects people, equipment, and measurement technology, and is an essential component of modern measurement data acquisition and automation solutions.