As Wire breakage In electrical engineering, measurement technology, and automation, this term refers to a fault condition in which an electrical circuit is interrupted, preventing the proper flow of signals or current.
The term „wire break“ is often used as a general term for a break in a circuit. However, the actual cause is not necessarily a physically broken wire or a damaged cable. Loose terminals, defective connectors, corroded contacts, faulty sensors, or interrupted circuits can also lead to a wire break.
In measurement and automation systems, a wire break can prevent measured values from being recorded or transmitted correctly. Depending on the type of signal, this can manifest itself, for example, as unrealistic measured values, a signal drop to zero, signal overloads, or defined error conditions.
This is especially true for analog current signals, such as those widely used in industry 4–20 mA signal, a wire break can often be reliably detected. If the current drops below a specified threshold, the measurement or control system interprets this as a break in the circuit and can issue the appropriate error messages.
Modern measurement and data acquisition systems often feature built-in wire break detection to identify faults early and improve the operational reliability of equipment.
Possible causes of a wire break:
- Damaged or severed cables
- Loose terminals or connectors
- Corrosion on Contacts
- Defective sensors or transducers
- Faulty Wiring
- Component failures in the signal path
Consequences of a broken wire:
- Loss of Measurement Data
- Malfunctions in Control Systems
- Interruption of Monitoring Functions
- False alarms or system shutdowns
- Impairment of process reliability
Significance in measurement and automation technology:
Reliable detection of wire breakage is a key component of modern measurement and monitoring systems. It enables rapid fault diagnosis, reduces downtime, and contributes significantly to safe and reliable plant monitoring.
Wire breakage alerts are therefore among the basic diagnostic functions of many sensors, measuring devices, data loggers, and automation systems.