RadiMation Application Note 104: Difference between revisions
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= | = How to determine the current sensor transfer impedance = | ||
This Application Note explains how measurements can be done in {{RadiMation}} to | The transfer impedance of a current sensor is important and required to perform accurate current measurements. A typical current sensor transfer impedance can be retrieved form the manufacturer of the current sensor, or it can be determined in a calibration laboratory. It is however also possible to determine the transfer impedance of a current sensor yourself, if you have the correct equipment. | ||
This Application Note explains how measurements can be done in {{RadiMation}} to determine the transfer impedance of a current sensor. These measurements are done by using the Attenuation/Gain calibrations as they are provided by {{RadiMation}}. After the Attenuation/Gain calibration is performed, some calculations are needed to determine the correct transfer impedance, however these can easily be done in Microsoft [[Excel]]. A verification of the calibration and recalculation of the data can be done to ensure that the expected current is indeed correctly measured by {{RadiMation}}. | |||
== Performing the Attenuation/Gain system calibration == | |||
== Performing the Attenuation/Gain EUT calibration == | |||
== Converting the determined to a transfer impedance == | |||
== Specifying the transfer impedance for the current sensor device driver == | |||
== Verification == | |||
After the transfer impedance of the current sensor is determined and attached, it is also possible to verify if {{RadiMation}} is able to measure the expected current. | |||
== Relevant links == | |||
* [https://www.fischercc.com/wp-content/uploads/2016/07/Current_Probe_Calibration_PGD_2014_02_06_2.pdf Fischer Custom Communications: Current Probe Calibration] | |||
* [https://design-4-emc.com/2013/01/22/question-on-current-probe-calibrations/ Wyatt Technical Services: Question on Current Probe Calibrations] | |||
[[Category:RadiMation Application Note]] | [[Category:RadiMation Application Note]] | ||
[[Category:RadiMation]] | [[Category:RadiMation]] |
Revision as of 10:15, 29 January 2019
How to determine the current sensor transfer impedance
The transfer impedance of a current sensor is important and required to perform accurate current measurements. A typical current sensor transfer impedance can be retrieved form the manufacturer of the current sensor, or it can be determined in a calibration laboratory. It is however also possible to determine the transfer impedance of a current sensor yourself, if you have the correct equipment.
This Application Note explains how measurements can be done in RadiMation® to determine the transfer impedance of a current sensor. These measurements are done by using the Attenuation/Gain calibrations as they are provided by RadiMation®. After the Attenuation/Gain calibration is performed, some calculations are needed to determine the correct transfer impedance, however these can easily be done in Microsoft Excel. A verification of the calibration and recalculation of the data can be done to ensure that the expected current is indeed correctly measured by RadiMation®.
Performing the Attenuation/Gain system calibration
Performing the Attenuation/Gain EUT calibration
Converting the determined to a transfer impedance
Specifying the transfer impedance for the current sensor device driver
Verification
After the transfer impedance of the current sensor is determined and attached, it is also possible to verify if RadiMation® is able to measure the expected current.