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Flexible Current Probes Overview

PMI’s flexible current probes offer a new level of convenience for power quality investigation. The Flex CTs allow you to measure current and power by simply wrapping the cable around one or more conductors.

The probes are available in sets of two, three, or four channel models. They also come in four different lengths: 12, 24, 36, and 48 inches. This will provide the user with an inside diameter of 3.5, 7, 10.9, and 14 inches respectively.

The Flex CTs are powered from the recorder, meaning they don’t need an external battery source. They work seamlessly with our recorders like the Revolution, the Boomerang, and the Eagle Series. Regardless of what model Flex CT you purchase, they all function the same way.

What’s in the Box

Inside the box, you’ll find the Flex CT. The label shows the product serial number, contact information for PMI, and the safety ratings.

Connecting the Flex CT

At the end of the cable, there’s a communications port. To attach the probe to the recorder, align the plastic tab inside the port to the notch on the cable. Slide the cuff forward and turn to lock.

You’ll notice that the individual cables are marked with a channel number, so it’s easy to pair the current and voltage channels. Disconnect the CT by squeezing the sides of the connector.

Using the Flex CT

The Flex CT has an arrow on the connector, which should be pointed towards the load to ensure proper current phasing. Once you’ve wrapped the probe around the conductor, squeeze the sides of the connector again and push the element back into the connector.

Keep in mind, the Flex CT insulation is rated for a max of 600 volts and shouldn’t be used for higher voltages, even if the measured conductor is insulated.

Product Information Card

Also inside the box, you’ll find the product information card. This details how to register your product, view the operating manual, download whitepapers, and PMI’s free ProVision software.