| ATR Series, AC Current Transducers, True RMS |
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| ATR Series Current Transducers combine 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 solidor split-core case. |
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Download Complete Specifications in .pdf Format |
VFD Controlled Loads
Monitoring VFD output indicates how the motor and attached load are operating. |
SCR Controlled Loads
- Accurate measurement of phase angle fired
or burst fired (time proportioned) SCRs.
- Current measurement gives faster response
than temperature measurement.
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Switching Power Supplies and Electronic Ballasts
True RMS sensing is the most accurate way to measure power supply or ballast input power. |
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- True RMS Output - True RMS technology is
accurate on distorted waveforms like VFD or SCR ouputs.
- 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).
- UL, CUL and CE Approval - Accepted worldwide.
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| Output Signal |
4–20mA, Loop-powered, True RMS |
| Output Limit |
23mA |
| Accuracy |
1.0% FS |
| Response Time (10–90% step change) |
600 ms (to 90% step change) |
| Frequency Range |
10–400Hz |
| Power Supply |
24VDC Nominal, 40VDC Maximum |
| Isolation Voltage |
UL listed to 1,270VAC (tested to 5KV) |
| Input Ranges |
Field selectable ranges from 0–200A; custom ranges available; consult factory. |
| Sensing Aperture |
- -FT Case: 0.74” (19mm) dia.
- -SP Case: 0.85” (21.6mm) sq.
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| Case |
UL94 V0 Flammability Rated |
| Environmental |
-4 to 122°F (-20 to 50°C) 0–95% RH, noncondensing |
| Listings |
UL 508 Industrial Control Equipment (USA & Canada), CE |
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| Ordering Information |
Download Complete Specifications in .pdf Format |
| Solid-Core Models |
| Model |
Description |
Output |
 ATR0-420-24L-FT |
0–2 & 0–5A Ranges, Top Term. |
4–20mA True RMS |
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ATR1-420-24L-FT |
0–10, 0–20, 0–50A Ranges, Top Term. |
4–20mA True RMS |
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ATR2-420-24L-FT |
0–100, 0–150, 0–200A Ranges, Top Term. |
4–20mA True RMS |
| Split-Core Models |
| Model |
Description |
Output |
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ATR0-420-24L-SP |
0–2 & 0–5A Ranges |
4–20mA True RMS |
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ATR1-420-24L-SP |
0–10, 0–20, 0–50A Ranges |
4–20mA True RMS |
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ATR2-420-24L-SP |
0–100, 0–150, 0–200A Ranges |
4–20mA True RMS |
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