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How to Select

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Representative Models

1. Tape Scales
2. Cassette
3. Tape Spar
4. Rotary 7", 720 pole transducer with Integral Rotary Transformer
5. Bar Scale and Slider
6. Rotary 5" absolute, 128/126 pole Transducer
7. Rotary 4", absolute 256/2 pole space rated Transducer
8. Rotary 12", 512 pole with IRT Transducer
9. Bar scale and slider, 0.2" cycle
10. Rotary 4" absolute, 256/2 pole Transducer
11. Rotary 11" absolute, 256/254 pole, with hard shield, wide temperature range.

TO FILL OUT A FORM TO DETERMINE WHICH INDUCTOSYNS ARE SUITABLE FOR YOUR APPLICATION, CLICK HERE.

All Inductosyn® transducers meet current commercial standards and can be designed to meet strict MIL specifications.  To meet individual needs, we will customize one of our many Inductosyn® designs or create a new solution for your specific application.

Selection should be based on the desired characteristics of Accuracy, Cycle Length, Travel and Overall Length, Velocity and Material specifications.

Key Selection Criteria

bulletAccuracy - Choose rotary diameter and linear scale type or width to satisfy accuracy needed or mounting restrictions.  Specially selected units can provide greater than standard accuracy.  Highest linear accuracy is possible with Adjustable Linear Scales.
 
bulletCycle Length - Select cycle length to suit your system requirements.  Accuracy is not strictly a function of cyclic pitch.  Standard linear cyclic pitches measure 0.1 inch, 0.2 inch, and 2mm. Standard rotary units incorporate from 2 to 2048 poles.
 
bulletTravel & Overall Length - Before Inductosyn selection, determine travel and overall length required.  For tape units, allow for overtravel to clear tape tension supports.  For bar scales, this is not a consideration, as they are free of mechanical interference at their ends.
 
bulletVelocity - The maximum tracking speed of Inductosyn transducers is a function of cyclic pitch and the type of conversion electronics employed.  There is a tradeoff between maximum tracking speed and resolution.  A nearly endless variety of combinations of cyclic pitch and digital converter is available to meet a wide range of resolution/velocity requirements.
 
bulletStandard Material - Bar scale, slider, and rotary unit substrates are precision ground plates of hot rolled steel or aluminum, closely matching thermal coefficients of most machine parts.  Almost any other substrate material can be supplied on special order.   Tape scale substrates are offered in spring steel, stainless steel, or aluminum.
 
bulletBar scales, sliders, and rotary units may be manufactured on other substrates, e.g. stainless steel or beryllium, and in nonstandard thicknesses, diameters, or mounting configurations.  Subject to size and configuration limitations and material compatibility, Inductosyn patterns may be produced directly on user's parts.
 
bulletFor a detailed description of operating principles, refer to our Farrand Controls Brochure.
 
bullet TO FILL OUT A FORM TO DETERMINE WHICH INDUCTOSYNS ARE SUITABLE FOR YOUR APPLICATION, CLICK HERE.

 

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Tel: (914)761-2600 Fax: (914)287-4038 email: sales@ruhle.com
Send mail to jtrench@Ruhle.com with questions or comments about this web site.
Copyright © 1999 RUHLE COMPANIES, INC.
Last modified: March 09, 2015

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