The electronic universal testing machine can be widely used in rubber, canvas, aviation, wire, plastic and other related materials. The use of electronic universal testing machine is generally used with a digital display dynamometer or an analog dynamometer. The electronic universal testing machine can test the quality or performance through the control software, but the test results of the electronic universal testing machine sometimes have some errors, so the errors in the measurement results of the electronic universal testing machine are all from the first placeLet's take you to understand the causes and precautions of errors in electronic universal testing machines.
1. Systematic error of electronic universal testing machine: This kind of error is generally maintained at a certain value or has a regular error. There are two main reasons for the occurrence: the first reason is that the indication value of the electronic universal testing machine is not accurate, so the test is a fixed error, either too large or too small;The second reason is the error generated by the resistance strain gauge on the instrument panel when measuring the strain value.
2. The random error of the electronic universal testing machine: that is, under the same conditions, a certain parameter is repeatedly measured, and the measured values are not the same, and there are two reasons for this error: the first reason is the influence of the friction change in the electronic universal testing machine during the test processThe second reason may be due to changes in the humidity of the environment in which the electronic universal testing machine is exposed.
3. Poor fault of the user: This is the error caused by the user's operation error or negligence during the test work. There is no pattern to follow this kind of error, and the user needs to pay attention to it when operating.
In the use of electronic universal testing machines, it is not only necessary to avoid errors, but also to pay attention to some problems:
1. It is necessary to use a suitable fixture to complete the test, otherwise the test will be unsuccessful and the fixture will be damaged
2. If impurities such as dust are generated in the test, they must be cleaned up, otherwise they will cause wear and scratch on the parts of the electronic universal testing machine
3. Check the liquid level of the oil tank frequently, and replenish the oil in time if necessary
4. For some filters without clogging indicators, they should be replaced every six months
5. Some fasteners should be locked regularly, and some materials will vibrate in the process of breaking, which will loosen some fasteners, and it is necessary to inspect them regularly to avoid greater losses.