How to detect the elongation of electronic tensile machine

Whether the configuration of the electronic tension machine can work properly plays an important role in the extension test of the equipment.

First of all, we should check the displacement sensor of the electronic tension machine. Since the system is a closed-loop system and determine which parts of the system are faulty, the circuit in the system must be disconnected to make the system an open loop system. If it is determined whether the sensor signal is normal, the reaction signal of the displacement sensor must be disconnected, so that the system becomes open loop. At this time, a control actuator movement signal is announced from the workstation, and then the sensor response value is measured. After repeated several times, when measured The sensor's response data is a linearly changing straight line, and it can be concluded that the sensor is normal.

Next, check the amplifier unit of the electronic tension machine to eliminate the fault of the displacement sensor and then check if the amplifier unit is normal. First disconnect the output signal of the amplifier unit, remove the output wiring, and then add a DC input signal to the amplifier unit through the workstation, and measure the output condition of the amplifier unit. After repeated several times, the measured output signal of the amplifier unit changes linearly. , you can conclude that the amplifier unit is normal.

After ensuring that the sensor and amplifier unit can work normally, the electronic tensile machine can be used to detect the elongation of the sample. The steps are as follows.