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Digital Wireless Rotary Telemetry
---Dependable Data Retrieval from Rotating Sensors

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Motors/Generators, Wind, Hydro

Accumetrics provides condition monitoring of rotors in brushless exciter, synchronous large motors and generators.
· Maximize throughput, safe operation, reliability, and maintainability.
· Eliminate slip rings via EMI resistant digital telemetry measurements
· Earth /ground fault resistance, temperature (RTD, thermocouple, and V/I), field voltage, torque and vibration.

Click for Application Notes:

· Brushless Generator Ground Fault
· Wind Turbine Blade Monitoring
· Hydro Power Generator Monitoring
· Torque Ripple-Variable Frequency Drive
· Motor Rotor Temperature Monitoring
· High Energy Motor Monitoring
· Steel Mill Drive Motor Rotor Monitoring
· 660MW Generator Monitoring System
· Earth Fault Resistance Monitoring
· Improve Hot Mill/Cold Mill throughput - motor/generator temperature monitoring

Automotive and Rail Transport

Torque and other sensor data can be dependably recorded with battery powered Kevlar strap mounted systems, or through the use of inductively powered 12 or 16 bit telemetry systems
· Measure torque through strain gauges on existing driveshafts.
· Precisely wirelessly measure multi- channel strain, pressure, & temperature.
· Monitor driveshaft torque, transmission telemetry, and NVH noise and vibration.
· Monitor wheel and axle stress through multichannel wheel force telemetry.

Click for Application Notes:

· Driveshaft-axle on-track torque measurement
· EMI Resistant Vehicle Torque Data
· Noise and Vibration (NVH) Monitoring
· Truck Wheel Instrumentation
· Railroad Wheel Force Measurement
· Drag Racing Driveshaft Monitoring
· Calibration-Strain Gage,telemetry, DAQ

Aerospace

Vibration, temperatures, and torque can all be wireless transmitted off shaft without the use of slip rings.

Accumetrics provides dynamic torsional vibration, brake temperature, and high speed shaft torque measurement digital telemetry for rocket, aircraft engine, aircraft braking and other applications.

Click for Application Notes:

· Aerospace Pump Dynamic Blade Monitor
· Aerospace High RPM Torque Measurement
· Brake Test Stand Temperature Monitoring
· AT-7400 NASA-Ames helicopter rotor blade telemetry

Marine

Retrieve high bandwidth torque and vibration data from Marine driveshafts regardless of high EMI.

Accumetrics has supplied torque and vibration digital telemetry systems for use on new designs of electric drive ships, as well as for conventional diesel propulsion.

Applications include shaft torque, delivered horsepower, fuel efficiency monitoring, and multichannel vibration monitoring, and engine torque and temperature monitoring.

Click for Application Notes:

· Tugboat Drive Torque
· Torque Monitoring for Electric Drive (in a high EMI environment)

For Data Sheets, click on:

· AT-8000 EFREM Earth Fault Resistance Monitor (Ground Fault Protection)
· AT-5000 EasyApp single channel measurement telemetry - battery powered
· AT-4400 single channel precision measurement- induction powered
· AT-8300 Rotor Health Monitor (RHM)-temperature,field voltage/current,ground fault
· AT-7000 and AT-7000 "Motor Monitor" multisensor multichannel monitoring
· AT-7400 high resolution/bandwidth multi-channel digital telemetry

For General Application Notes, click on:

· Basics of Rotor Telemetry                                 · Temperature Measurements
· EMI Immunity of Accumetrics Digital Telemetry   · Noise and Digital Resolution
· Accuracy of Accumetrics Digital Telemetry         · AT-4400 Quick Guide
· Noise and Vibration Measurements                     · AT-5000 EasyApp Quick Guide
· Antenna Selection Guide                                   · AT-7000 Theory of Operation