What is the working principle of the tension sensor ? The elastic body (elastic element, sensitive beam) is elastically deformed under the action of external force, so that the resistance strain gauge (conversion element) attached to the surface is also deformed along with it, and the resistance value of the strain gauge will change after the deformation of the strain gauge. Large or small), and then the corresponding measurement circuit converts this resistance change into an electrical signal (voltage or current), thereby completing the process of converting the external force into an electrical signal. What are the performance indicators of the pull sensor ? It mainly includes linearity error, hysteresis error, repeatability error, creep, zero temperature characteristic and sensitivity temperature characteristics. The advantages of the tension sensor are high precision, wide measuring range, long service life, simple structure, good frequency response characteristics, work under severe conditions, and easy to achieve miniaturization, integration and variety. Its shortcoming is that it has large nonlinearity for large strain and weak output signal, but certain compensation measures can be taken. It is therefore widely used in automated test and control technology. How to connect the tension sensor ? Firstly, determine the power supply positive, negative power supply, feedback positive, negative feedback, positive signal and negative signal of the sensor interface on the display. If it is a 6-wire transmitter, the two sets of lines with the smallest sensor resistance are positive and positive feedback. Negative power supply, negative feedback, load the sensor after receiving the monitor, measure the voltage value of the other two wires (millivolts) is connected to the display signal positive, negative connection display signal is negative; if it is a four-wire value, the power supply of the display needs to be positive Short-circuit with the feedback, short-circuit between the negative and negative feedback of the power supply. Use a multimeter to measure the four wires of the sensor. The two resistors with the largest resistance value are the power supply, and the other two are the signals. According to the origin of the sensor, the color of the lead can be judged. The manufacturer in the country is generally red for the power supply, black for the negative power supply, green for the positive signal, and white for the negative signal; the sensors produced in Europe and America are generally green for the power supply and black for the power supply. Negative, white is positive for signal and red is negative for signal. Article source:
Tensile sensor working principle performance indicators and how to wire
What is the working principle of the tension sensor ? What are the performance indicators of the pull sensor ? How to connect the tension sensor ? The tension sensor, also known as the resistance strain sensor, belongs to the series of load cells and is a device that converts the physical signal into a measurable electrical signal output. It uses two tensions to transmit part of the force and contains force sensitive in its structure. The device and the two tension transmitting portions comprise a piezoelectric sheet and a piezoelectric sheet spacer in the force sensitive device, the latter comprising a substrate portion and an edge force transmitting portion, wherein the two ends of the two tension transmitting portions are respectively fixed at Together, the force sensitive device is clamped by the lateral acting surface between the two ends, and the piezoelectric sheet gasket is pressed on one side of the central portion of the piezoelectric sheet, and the substrate portion is located on the other side of the piezoelectric sheet and the edge transmitting portion. One of the uses of the piezoelectric sheet is to make a hook scale instead of the rod. The actual working environment is crucial for the correct selection of the tension sensor. It is not only related to the normal operation of the tension sensor, but also its safety and service life, and even the reliability and safety of the entire scale.