Product Specification

The CR4220S Series Average RMS Current Transducers and Transmitters are designed to provide a calibrated DC output proportional to the AC current input. Designed for multi-point current sensing, these devices provide excellent features in a high value package. Average RMS is recommended when sensing current waveforms that have a fixed frequency, and are usually for loads operated from standard utility power. 

CR4220S AC Current Transmitter Features
? 35mm DIN Rail or Panel Mount
? 4-20 mAdc
? Loop Voltage 24 Vdc
? Use with external current transformers
? Highest precision available
? Connection diagram printed on case

CR4220S AC Current Transmitter Specifications
? Basic Accuracy: 1.0%
? Calibration: Average RMS
? Thermal Drift: 500 PPM/°C
? Operating Temperature: 0°C to +60°C
? Installation Category: CAT II
? Polution Degree: 2
? Insulation Voltage: 2500 Vdc
? Altitude: 2000 meter max.
? Frequency Range: 50 Hz - 400 Hz
? MTBF: Greater than 100 K hours
? Cleaning: Water-dampened cloth
? Supply Voltage: 24 Vdc ±10%
? Output Load: 1M Ω or Greater
? Response Time: 250 ms max. 0-90% FS 
? Relative Humidity: 80% for temperatures up to 31°C and decreasing linearly to 50% at 40°C

CR4220S AC Current Transmitter Applications
? Directly connect to PLC
? Sense motor stalls and short circuits
? Industrial instrumentation
? Process control loops
? Phase Fired Controlled Heaters

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