Description: The IEM-422 is a line-powered LVDT/RVDT compatible current transmitter, designed for industrial process control applications. The IEM-422 consists of a DIN rail mount power supply and an LVDT signal conditioner module, pre-configured to supply a 4 to 20 mA output from a 115 or 230 volt AC supply. The IEM-422 supplies an AC sine wave excitation to the LVDT and then demodulates and amplifies the LVDT output. A full-wave synchronous demodulator eliminates quadrature and harmonics to maximize external noise rejection.