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IMI's line of industrial 4-20 mA velocity transmitters combine the capabilities of a piezoelectric vibration sensor and a 4-20 mA vibration transmitter to streamline continuous vibration monitoring of critical systems. Model 656A91 features a 4 pin, M12 connector for easy integration into your existing equipment. Its embedded piezoelectric element contributes to improved accuracy and an increased frequency response of 3.5 to 2 kHz. This sensor outputs a 4-20mA signal that is proportional to the overall velocity or acceleration of machinery, making it ideal for monitoring vibrations of equipment such as fans, motors, and pumps in process control or predictive maintenance applications.