The Model AT-4500 EasyApp system is a rugged, high bandwidth, high speed, 16-bit rotor telemetry system primarily used for full bridge strain gage torque measurements. AT-4500 can also be used for rotor voltage and RTD temperature signals. The system
is easily installed, without any shaft modification, with an aramid fiber strap. As an induction powered system, no batteries are required. Using wireless technology, sensor data can be directly acquired for broadly varied applications − from
vehicle drive shaft torque to large generator excitation voltage.
AT-4500 uses a set of coils (one inside the transmitter and one stationary loop coil) to induce power across an air gap, for both sensor excitation and to power the telemetry transmitter. The rotor sensor or voltage signal is amplified, anti-alias filtered,
and then digitized. EMI resistant digital data is transmitted off the rotating shaft to the pickup coil, which is connected to the receiver by coaxial cabling. The receiver converts the digital data to high bandwidth analog voltage output (adjustable
from 0 ± 1.0 to ± 10 volts). The voltage output signal is then connected to the user’s data acquisition system. Rotation is not required for the system to operate.