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2005 Edition

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Gurley Precision Instruments
514 Fulton Street
Troy, New York 12180

(800) 759-1844
(518) 272-6300
Fax  274-0336

 

 

 

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GPI E-News                                                                                          Spring 2005 Edition

 

 

New Family of True Absolute Encoders!

New Family of Low Cost True Absolute Encoders!


Model A58 - High Resolution True Absolute Rotary Encoder


Model A37 - Low Cost Miniature True Absolute Rotary Encoder
 


Model A19 - Smallest True Absolute Rotary Encoder


Download datasheet

      Features:

  • 12- to 16-bit resolution
  • 58 mm diameter
  • Gray code or natural binary
  • Parallel, SSI and
    multiplexed parallel outputs
  • Accuracy: +/- 0.5 LSB
     


Download datasheet

     Features:

  • 12-bit resolution
  • 37 mm diameter
  • Gray code or natural binary
  • Parallel, SSI and
    multiplexed parallel outputs
  • Accuracy: +/- 0.5 LSB


Download datasheet

      Features:

  • 12-bit resolution
  • 19 mm diameter
  • Shaft or blind hollow-shaft configurations
  • Gray code or natural binary
  • SSI output format
  • Accuracy: +/- 0.5 LSB

 

More Info: More Info: More Info:

The A58 is the highest resolution compact encoder available for applications requiring precise measurements of distances and angles in a relatively small package. The low cost and high accuracy of this encoder make it an ideal solution for practically all applications which require absolute positioning. Mechanical features include a 58-mm diameter aluminum housing, a 3mm to 0.25” diameter stainless steel shaft, and precision ball bearings. Output formats include serial, parallel and multiplexed versions of Gray code or natural binary.

 

The Model A37 mini-encoder is a 12-bit single turn absolute rotary encoder with opto-electronic technology. These encoders are used in a wide variety of position sensing applications for the measuring of angles and distances in relatively small envelopes. Mechanical features include a 37-mm diameter aluminum housing, a 3-4 mm 0.125 - 0.25") diameter stainless steel shaft, and precision ball bearings. Output formats include serial, parallel, and multiplexed versions of Gray code or natural binary.

 

The Model A19 mini-encoder is a 12-bit single turn absolute rotary encoder with opto-electronic technology. These encoders are used in a wide variety of position sensing applications for the measuring of angles and distances in relatively small envelopes. Mechanical features include a 19mm diameter aluminum housing and either shaft or blind hollow-shaft configurations. Output format is SSI Gray code or natural binary.

 

 

Free Exhibit Pass - National Manufacturing Week in Chicago

See us at National Manufacturing Week in Chicago

GPI will be exhibiting at the Design Engineering Show at National Manufacturing Week in Chicago, March 7-10 at McCormich Place.

 GPI booth # 2639

Click the logo below for free advanced registration!

New Products: Gurley Models A37, R11and LE50

USB compatible Virtual Absolute Encoder - Model 7700



      KEY SYSTEM FEATURES:
  • Convenient interface — USB interface (and power!) updates up to 500 times/sec

  • High resolution — 18 bits = 262,144 measuring steps/rev

  • Low cost — least expensive 1/4 million count absolute device anywhere!

  • Virtual Absolute — position is absolute after 3.52° initial motion

  • More choices — 1.75" at 1/2 million counts coming soon

Click here to learn more.

 

Technical News - What is Virtual Absolute Technology?

Technical News - What is Virtual Absolute (VA) Technology?

Gurley Precision Instruments has developed a unique encoding method that combines the opto-mechanical simplicity of an incremental encoder with the system reliability and interfacing ease of an absolute encoder. Virtual Absolute encoders use cyclic and index tracks, like an incremental encoder. However, the index track is a serial code similar to a bar code instead of just a single line.

The advantages of our VA technology are as follows:

  1. A VA encoder is usually dramatically less expensive than a conventional absolute.

  2. The encoder contains inherent built-in-test functions not found in any conventional encoder. It reports not only various encoder malfunctions, but can also help detect system problems such as too high a temperature or excessive speed.

  3. The encoder generates the same whole-word information as a conventional absolute, so it is very easy to interface to computers, PLC's, servo controls, etc.

  4. With its simpler optics, a rotary VA encoder can be smaller than a conventional absolute of equal resolution. And you can use a linear VA encoder for applications where a suitable conventional absolute linear would be very hard to find.

  5. Because of its simpler electronics, reduced parts count, and less critical internal alignments, a VA encoder is inherently more reliable than a conventional absolute.

  6. The initialization distance or angle is a fixed and very small motion, regardless of the starting position or direction of travel. Just "bump" it to find out where you are.

Click here to download full PDF article.

 

 


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Gurley Precision Instruments
514 Fulton St.
Troy, NY 12180
(800) 759-1844
info@gurley.com

 

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