TransducerBasics

How it works, Transducer basics:

These linear displacement transducers consist of a magnetostrictive wire enclosed within a stainless steel tubing. A donut shaped magnet is fastened to the moving portion of the machine (or to a hydraulic cylinder piston) and the stainless steel rod is rigidly mounted so that it passes through the donut center of the magnet. A pulse of current is sent through the wire which interacts with the magnet causing a torsional stress wave to travel along the wire at a rate of approximately 0.11-inches per microsecond. At the reference end of the wire a torsional transducer detects the pulse return, thus, providing the ability to measure a time interval between launch and arrival of the pulse.

Typical applications using Digitrons products realize a position resolutionof 0.0005 inches at a length up to 65 inches and an update interval of approximately 5 milliseconds (using 8 recirculations*).

*Note: Recirculations refers to the number of times that the transducer electronics circulates the pulses before providing an output pulse-width signal whose duration is equal to the total elapsed time for the number of recirculations programmed. A larger number of recirculations increases measurement resolution.

Some Transducer Manufacturers:

Temposonics^TM Transducers are available from MTS System Corporation, Sensors Division, 3001 Sheldon Drive, Cary, NC 27513, 800-633-7609
**We are listed on their site under the 3rdparty vendors!!

Balluff Micropulse^TM Transducers are available from Balluff, Inc. 8125 Holton Drive, Florence, KY 41042, PH: 1-800-543-8390 E-Mail: balluff@balluff.com

Digitron Electronics L.L.C. Stevenson, Washington 98648

(509)427-4005 fax(509)427-3632
Inquiries to: NOSPAM@digitronelec.com
(Replace the word "NOSPAM" with the word: controls)

Home | Board Edger | Cant Edger | STD Bus Card | ISA Bus Card | Servo Card | Line Card | Setworks Images | Trimmer-Sorter | Planer Head Height | Transducer Theory

Copyright ©1980-2006 Digitron Electronics LLC