Have to pay attention to the problem of mechanical dynamometer

Mechanical dynamometers are primarily range when selected. There are various types of dynamometers such as 10N, 20N, 30N, 100N, 200N, 300N, 500N, etc., according to the approximate range measured, do not exceed the range, which is easy to damage the dynamometer. It is also not advisable to choose too large, so that it is difficult to observe the reading and the accuracy is low.
Secondly, when measuring, first observe whether the pointer is at the zero position, and if it is not at the zero position, adjust to the zero position. At this point, the students are most likely to ignore when doing experiments. They often measure one pass, the pointer is not at the zero position, and the measured values ​​are all wrong.
The third is to pay attention to the reading when measuring. Eyes should look flat on the pointer, do not squint, and minimize reading errors. There are two main types of dynamometers, namely, grams and Newtons. Be careful not to confuse them.

Problems to be aware of when using mechanical dynamometers

1. Before using, first check if the battery voltage is normal. If it is under voltage, please charge it in time, otherwise the measurement will be biased.
2. Estimate the measurement size, select the dynamometer of the appropriate range, and measure the out-of-range, which will cause damage to the dynamometer sensor.
3. When the measured value is less than 3% of the force measurement range, the accuracy will be deviated.
4. When not in use for a long time, the dynamometer should be charged regularly.
5. At the same time, when the weather is wet in summer, the instrument should be kept in an environment to avoid corrosion of the instrument.