What is the relative amount of change in the resistance of a metal strain gauge sensor mainly expressed in?

The relative change in the resistance of a metal strain gauge sensor is mainly in its output signal, usually in the form of voltage or current.

When a metal strain gauge is subjected to stress or strain, its resistance value changes, which in turn causes a change in the output signal. The amount of this change can be determined by measuring the voltage or current of the output signal. Therefore, metal strain sensors are often used as a tool to measure the force or deformation of an object.

Metal strain transducer resistance refers to the property of a metal strain gauge (or strain-resistor sheet) to change its resistance value in response to an external force. When an external force is applied to a metal strain gauge, it generates strain, which changes the resistance value of the metal strain gauge. By measuring the change in the resistance value of the metal strain gauge, the magnitude and direction of the external force can be determined.

Metal strain sensors are often used to measure the stress or strain of objects subjected to force or deformation, and specific applications include:

1, structural engineering: such as buildings, bridges, tunnels, etc., monitoring and safety assessment;

2, machinery manufacturing: such as robotics, automotive, aerospace and other fields in the stress analysis and control;

3, seismology: used to monitor crustal movement and seismic activity, etc.;

4, medical equipment: such as blood pressure monitors, respirators, etc. measurement and control.

5, In addition, metal strain sensors can also be used for temperature, humidity and other environmental parameters of the measurement.