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Neilsen Kuljian

AT/ATR-FL Series AC Current Transducers combine a current transformer and a signal conditioner into a single package for applications from 100 A to 2000 A. The AT version is Average Responding for use on linear (sinusoidal) loads.

The ATR version is True RMS for use on distorted waveforms found in VFD or SCR ouputs. The AT/ATR-FL Series AC Current Transducers are available in a solid-core case.

NK Technologies AT/ATR-FL Series Fixed Core AC Current Transducers Distributors

AT/ATR-FL Series Fixed Core

The current waveform of a typical linear load is a pure sine wave. AT transducers measure the peaks of these sine waves, then calculate the average amperage.

This works well on constant speed linear loads in "clean" power environments. Select AT transducers for strictly linear loads on "clean" power.

Operating Instructions

If you are looking for NK Technologies AT/ATR-FL Series Current Transducers, please call us on (800) 894 - 0412 or email us at we will do our best to help you find the NK ATR-FL series current transducer that you are looking for at the most competitive prices possible. If you are searching for Neilsen Kuljian AT-FL series AC current transducer technical information (data-sheets) please use the datasheets or product selection guide page links.

AC Current Transducer Applications

  • Large Pumps - Detect dry run electronically.
  • Power Generation - Measure the output of generators.
  • Electric Heating Elements
    • Monitors heater loads.
    • Faster response than temperature sensors.

VFD and SCR output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in a mathematical algorithm called "True RMS," which integrates the actual waveform over time. The output is the amperage component of the true power (heating value) of the AC current waveform. True RMS is the only way to accurately measure distorted AC waveforms. Select ATR transducers for nonlinear loads on "noisy power."

AC Current Transducer Features

  • Large Aperture - Accommodates large conductors or wire bundles.
  • Select the Right Output
    • True RMS technology is accurate on distorted wave form like those associated with VFD or SCR outputs.
    • Average Responding for use with linear, sinusoidal waveforms.
  • Jumper Selectable Ranges
    • Reduces inventory.
    • Eliminates zero and span pots.
  • Isolation
    • Output is magnetically isolated from the input for safety.
    • Eliminates insertion loss (voltage drop).
  • Agency Approved - UL, CUL approved.

Ordering Information

Model Number
ATR2-420-24L-FL ATR3-420-24L-FL ATR4-420-24L-FL AT2-420-24L-FL
AT3-420-24L-FL AT4-420-24L-FL    

Our industrial factory automation supplies distributors warehouse in Boise, Idaho stocks some NK Technologies products enabling us to further assist you in finding the correct AT-FL series current transducer for your application in the USA, Canada and Mexico. Whether we have ATR-FL series current transducer in stock in Boise, Idaho or need to ship direct from NK Technologies to any USA cities; Clearwater Tech can get Neilsen Kuljian AT-FL series current transducer to you fast and save money! It will be very helpful if you have the ATR-FL series AC current transducer part numbers ready, then our sales representatives can provide you with a pricing and availability quote for AT-FL series current transducer that you are looking for in seconds. If you do not have the part numbers for ATR-FL series AC current transducers, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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