What is an IEPE accelerometer?
IEPE stands for Integrated Electronics Piezo Electric and defines a class of accelerometer that has built in electronics. Specifically it defines a class of accelerometer that has low impedance output electronics that works on a two wire constant current supply with an voltage output on a DC voltage bias. IEPE two wire accelerometers are easy to install, have a wide frequency response, can run over long cable lengths and are relatively cheap to purchase. The IEPE technology has generally replaced most 3 wire accelerometers and are broadly used for most applications except for specialist applications such as zero Hz accelerometers, high temperature applications or 4-20mA accelerometers used in the process industries.
