1. Make it clear whether the current needs to be detected is AC or DC, and what is the range of current to be measured, because the actual electric load has a larger range of current changes. So the current sensor can be divided into small current sensor and large current sensor according to the magnitude of current.
2. Input overload capability of current sensor;
3. What is the output? Current or voltage? For example, output voltage 4V;
4. To determine the accuracy of the sensor, some of them need high precision. Therefore, the accuracy should be emphasized and the high precision current sensor should be selected.
5. The specifications of auxiliary power supply - AC current sensor, in order to detect the change of input current accurately and to output DC signal linearly changing with input current, usually needs a working power supply of the most current sensor of auxiliary power supply, such as power supply voltage: +15V;
6. Determine the ambient temperature;
7. The shape of the sensor is very important? For example, the installation of guideway or circuit board, the aperture is round or square, all of which need to be considered.
