Which measurement would you perform to verify that the sensor input path remains isolated from the controller?

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Multiple Choice

Which measurement would you perform to verify that the sensor input path remains isolated from the controller?

To ensure the sensor input path stays isolated from the controller, you test the integrity of the isolation barrier by measuring isolation resistance between the input side and the controller side. With power removed, use an insulation resistance tester (megohmmeter) and apply the test voltage to the barrier; the measured resistance should be very high (typically in the megaohms range) as specified for the equipment. A high resistance confirms there is no conductive path across the isolation boundary. Visual inspection may miss insulation faults, ambient light levels don’t reveal isolation status, and software version details don’t test hardware isolation. So, directly measuring isolation resistance is the proper way to verify the separation.

To ensure the sensor input path stays isolated from the controller, you test the integrity of the isolation barrier by measuring isolation resistance between the input side and the controller side. With power removed, use an insulation resistance tester (megohmmeter) and apply the test voltage to the barrier; the measured resistance should be very high (typically in the megaohms range) as specified for the equipment. A high resistance confirms there is no conductive path across the isolation boundary. Visual inspection may miss insulation faults, ambient light levels don’t reveal isolation status, and software version details don’t test hardware isolation. So, directly measuring isolation resistance is the proper way to verify the separation.

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