One Measuring bridge is a special electrical circuit designed for high-precision measurement of resistances and minute changes in resistance. Particularly common is the Wheatstone bridge, which is used in industrial measurement technology to precisely measure physical quantities such as force, strain, pressure, or weight.
Since many sensors change their electrical resistance in response to mechanical stress, the measuring bridge forms the basis of numerous modern measurement systems.
How does a measuring bridge work?
The measurement principle is based on comparing several resistors in a bridge circuit. If one of the resistors changes, the bridge becomes unbalanced and generates an electrical voltage. This so-called Bridge voltage is proportional to the change in resistance and can be evaluated with a high degree of accuracy.
This method makes it possible to reliably detect even the smallest material deformations or stresses.
Typical Applications
Measuring bridges are used in numerous areas of measurement and testing technology, including:
- Force and Weight Measurements
- Strain Measurements Using Strain Gauges (SG)
- Material and Component Testing
- Weighing and Dosing Technology
- Test Benches in Research and Development
- Structural and Load Monitoring
In particular Strain Gauges (SG) are often connected in a Wheatstone bridge to convert the slightest strains in a component into a precise electrical measurement signal.
Measuring Bridges with Delphin Technology
For the precise acquisition of strain gauge and bridge signals, Delphin Technology offers high-performance Measurement data acquisition systems, which were developed specifically for demanding measurement tasks. The systems enable high-resolution detection of even the smallest signal changes and are suitable for both laboratory applications and continuous industrial use.
Benefits at a Glance
Measuring bridges stand out for their high precision and versatility:
- Reliable results even for demanding testing tasks
- Detection of the slightest changes in resistance
- High measurement accuracy and resolution
- Ideal for DMS-based sensors
- A proven measurement method in industry and research