Instruction for current sensor
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May 06 12:13:31, 2020
Current sensor (product model: KDS-1010)
Experimental subject of education course using current sensor (example)
â— The relationship between voltage and current (Ohm's Law)
â— Resistance (resistance series, parallel)
â— Current action (electricity)
â— Electrolytes, electric ions (substances that pass current)
If the error range is considered, then the current sensor used cannot measure currents smaller than ± 5mA (500µA, currents below 5mA-microamperes). The micro current needs to be measured with a micro current sensor (Galvanometer). When the current sensor senses a current smaller than 1mA, it is represented by 0.
In order to ensure the safety of the experiment, it is stipulated that the current sensor cannot measure the current above 1.0A. Because the over-current experiment of 1.0A or more has potential safety hazards, there is no such experimental theme in elementary and middle school courses.
How to use the current sensor
Experimental safety considerations
â‘ The current above 1A has a very large electrical impact and impact on humans and animals, and there is a feeling of electric shock when touching, so pay attention when designing the experiment. The experiment must be guided by the experiment teacher. In addition, the current and voltage above the allowable value may cause injury and safety accidents caused by electric shock, fire, explosion, etc., so special attention and guidance are required.
â‘¡ During the experiment, pay attention to avoid electric safety accidents such as electric shock and fire.
Zero adjustment
â‘ Complete [Zero Adjustment] in Excel before the experiment
â‘¡ Experiment after zero point adjustment is completed. When the sensor is detached after the experiment or press [Initial Value] in [Zero Adjustment], the zero adjustment value is cancelled and the initial state is restored.
â‘¢When setting the standard zero point, the interface device will save the setting. When the interface device or sensor is separated from the computer, the original basic value will be restored.
experimental design
Design the experiment after considering the allowable values ​​of current and voltage in the circuit.