Strain sensors are mainly used to measure the deformation of the surface of a structure. Generally, during the whole process of force application, the mechanical bearing structure will be subjected to tensile or compressive force strain that is larger or smaller than the required force. The strain sensor can conduct indirect dynamic and quasi-static force measurement on the structure, and the relationship between force and strain is linear enough to effectively meet the requirements of accurate measurement and monitoring. When the strain is used for indirect measurement, the force distribution can be close to 99%, which is much higher than that of direct measurement.
The characteristics of
● Sensitivity: 40mV/με
● Low frequency limit: 0.01Hz
● Acceleration compensation
● Application: force process monitoring
 

parameter
Typical values
Unit
The measured parameters
Deformation in the direction of the longer axis
sensitivity
40
mV/μεAt room temperature
+20%/-10%
polarity
Positive pressure when tension is applied
The low-frequency limit
0.01
Hz
The resonant frequency
14.7
kHz
Dynamic range
100
με
The connector
coaxial 10-32 UNF
The power supply current
4(minimum 2，maximum 20)
mA
DC offset voltage
12(minimum 8，maximum 14)
v
DC bias is stable
60
s
Install the screw
M6×20, Conical head
Install torque
5(minimum 3，maximum 10)
Nm
Operating temperature range
-40~ +85
°C

 
structure
A. Mechanical structure under test, used to be cyclically stretched or compressed.
B. The two contact feet of strain transmission (yellow area) transmit the strain of the structure to the main body of the sensor and the piezoelectric element through friction to measure the shear force.
C. Piezoelectric measuring elements that generate an electric charge proportional to the applied shear force.
D. Sensor housing or body, similar to a spring, converts strain into proportional force.