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By certification 
WBI414F23 converts AC input current into output signal DC 4-20mA. It has adopted electromagnetic isolation principle for real time measurement of AC current from electric net or electric circuit. The output signal (voltage or current) of this transducer is proportional to the rectified average value of input AC current or reflects the input current wave.
WBI414F23 are able to supply high performance Sensors for the Automotive, Medical, Turbine Engine, Flight Test, Modal & Structural Analysis, Agricultural, Automation, Robotic and Lab Testing Industries.
Advantages:
Total galvanic isolation between input/output,
High accuracy,
Low drifting by temperature,
Wide temperature bearable range.
The difference with peers:
Different raw materials
Different production processes
Different manufacturing equipment
Different quality standards
http://www.wbsensor.com/
