Dear Sir, Thank you for your interest in our product lines. The CR4400 series has a basic accuracy of 0.5% at full scale. For a 5 volt output, that would be 5 VDC +/- 25 mVDC. For a 30 amp reading, the output would be 3 VDC +/- 25 mVDC, or .83% accurate at 30 Amps in. Since this is a transducer, the response time is 250 mS. Please note that the CR4400 series is an average sensing model, meaning it is calibrated at 60 Hz. Different frequencies will exhibit a different response. For multi-frequency sensing, please use the CR4100 series True RMS units. For the CR2DARL-500, this is a current transformer with an accuracy of 4.8% at a 0.1 ohm burden. This accuracy will be maintained down to 10% of rated, or 5 amps. Obviously since this is a CT, the response is practically instantaneous. However, the output is an AC current, so developing a dc voltage or a reading from a 60 Hz waveform will require similar filtering and response delay circuitry to obtain a useful signal. The accuracy is poor because this is a 5 amp output unit, and the CT uses only 10 turns on the secondary, which is minimal magnetic linkage. The CR4400 series uses an internal high turn ratio, high accuracy CT. Other off the shelf CTs offered by CR Magnetics can improve the accuracy if a CT is chosen.
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