In addition to the installation wiring, instant calibration calibration, and attention to the working environment of the Hall current sensor, the measurement accuracy can be improved by the following methods:
1. The primary side conductor should be placed in the center of the inner hole of the sensor, and should not be biased as much as possible;
2. The primary side wire fills the sensor inner hole as completely as possible, and no gap is left.
3. The current to be measured should be close to the standard IPN of the sensor. Do not differ too much. If the conditions are limited, there is only one sensor with a high rated value, and the current value to be measured is much lower than the rated value. In order to improve the measurement accuracy, the primary side wire can be wound a few times to make it close to the rated value. For example, when measuring a current of 10A with a sensor with a rating of 100A, to improve the accuracy, the primary conductor can be wound around the center of the inner hole of the sensor by ten turns (in general, NP=1; one turn in the inner hole, NP= 2;......; Around nine turns, NP=10, then NP×10A=100A is equal to the rated value of the sensor, which can improve the accuracy);
4. When the current value to be measured is IPN/10, it can still have higher accuracy at 25 °C.
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