The NK Technologies ATR3-420-24L-FL Current Transducer combines a current transformer and a True RMS signal conditioner into a single package. The ATR Series provides True RMS output on distorted waveforms found on VFD or SCR outputs, and on linear loads in “noisy†power environments. Available in a solid or split-core case.  True RMS technology is accurate on distorted waveforms like VFD or SCR ouputs and on linear loads in noisy environments. The output is magnetically isolated from the input for safety. Features:

• 0-375/0-500/0-750 ACA input
• 4-20 mADC output
• 24 Volt Loop Powered
• True RMS
• Solid core
• UL, CUL, and CE approvals

Applications:

• VFD Controlled Loads –  Monitoring VFD output indicates how the motor and attached load are operating.
• SCR Controlled Loads – Accurate measurement of phase angle fired (time proportioned) SCRs.  Current measurement gives faster response than temperature measurement.
• Switching Power Supplies and Electronic Ballasts – True RMS sensing is the most accurate way to measure power supply or ballast input power