Agilent Technologies, Inc.
Palo Alto, CA 94303
Nov 29, 2005 Featuring integral bearing, Series AEDA-3300 is available in resolutions from 600-4,096 cycles/revolution. Units operate at frequencies up to 1 MHz and temperatures from -40 to +125°C. Outputs are 2-channel quadrature with third gated index channel. Measuring 17 mm in diameter x 24 mm high, encoders include integrated RS-422 differential line driver and are suited for applications ranging from servo and stepper motors to robotic arms and wafer handling machines.

Heidenhain Corp.
Schaumburg, IL 60173-5337
Aug 05, 2005 Suited for dynamic extended travel applications, sealed LC 182 offers constant signal quality over entire measuring length and resolution down to 0.02 µm. It incorporates single-field scanning method that utilizes single scanning window, mitigating any effects of contamination. With EnDat as well as other absolute interfaces and max traversing speed of up to 120 m/min, unit is suited for use in linear motor and high-speed machines tool applications.

Computer Optical Products, Inc.
Chatsworth, CA 91311
Jul 08, 2005 Models CP850/950-HHC incremental rotary optical encoders, offered in shafted or blind-hollow shaft versions, have absolute accuracy of ±12 arcsec typ. Products are available in 35 resolutions from 25,000-1,250,000 full quadrature A and B cycles/rev if used with edge detection from 100,000-5,000,000 ppr, respectively. Model CP-850 comes with 3/8 in. shaft, and CP-950 is available for mounting on shafts with diameters to ½ in.

Grayhill, Inc.
La Grange, IL 60525 5914
Feb 08, 2005 Series 62M Magnetic Detent Optical Encoder is available in 16 and 24 positions. Additional choices include optional pushbutton and choice of cable lengths. Switch can be customized to user-specific requirements, including terminations, shaft and bushing configurations, and resolutions.

Renishaw, Inc.
Hoffman Estates, IL 60192
Dec 10, 2004 Signum(TM) RESM Rotary Ring Encoder delivers speeds to over 3,600 rev/min and accuracy to ±0.5 arc sec, with resolution and repeatability to 0.02 arc sec. Signum(TM) software enables real-time system diagnostics via PC's USB port. IN-TRAC(TM) optical reference mark, embedded in scale track, is repeatable in both directions at operational speeds over 3,600 rev/min. Rated for temperatures up to 85°C, RESM comprises low-profile ring, SR readhead, and Si interface.

Elma Electronic Inc.
Fremont, CA 94538
Dec 07, 2004 With no mechanical contacts, E50 all-optical encoder uses IR LEDs for signal generation and proprietary magnetic system for indexing. Various shapes on coding rotor mask create different keying sequences, enabling product to output 2 unique pulse trains 90° apart. Encoder, available in 24 or 32 pulses per channel per rotation versions, is offered in switching torques of 1.5, 1.3, .6, and .45 Ncm. Encoder shaft comes in 6 mm or ¼ in. sizes.

Renishaw, Inc.
Hoffman Estates, IL 60192
Sep 14, 2004 Signum(TM) RESM comprises RESM stainless steel ring, SR readhead, and Si interface. Available in diameters from 52-413 mm, ring locks directly to machine shaft, eliminating coupling losses, oscillation, and shaft torsion. IN-TRAC(TM) optical reference mark is embedded in scale track, which is repeatable in both directions at operational speeds over 3,600 rpm and up to 85°C. Optical encoder offers ±0.5 arc-sec accuracy in addition to 0.02 arc-sec resolution and repeatability.

Grayhill, Inc.
La Grange, IL 60525 5914
Aug 17, 2004 Using optically coupled circuitry, Series 62P consists of PCB-mounted switch with minimum life expectancy of 500,000 rotational cycles, 16 detent positions, and choice of pushbutton actuation force. It does not exhibit contact bounce normally produced by mechanical contacts, eliminating need for de-bounce circuitry or software. Switch terminations, shaft and bushing configurations, and resolutions are customizable to meet user requirements.

Grayhill, Inc.
La Grange, IL 60525 5914
Jun 28, 2004 Housed in compact, ½ in. package, Series 62S features minimum life expectancy of 1 million rotational cycles; 8, 12, 16, 20, 24, and 32 detent positions; and optional integral pushbutton. Customizable components of switch include terminations, shaft, and bushing configurations. Resolutions may also be user-specified. Applications include avionics, global positioning/driver information systems, audio equipment, and medical equipment.

Gurley Precision Instruments
Troy, NY 12181
Jun 02, 2004 Models R112S and R112B optical rotary incremental encoders are available in shafted or blind-hollow shaft versions with resolutions up to 8,000 cycles/rev. Designed for light industrial applications that require high resolution in compact package, uses include x-y stages, medical devices, miniature/small instrumentation, compact motors, and actuators.

Renco Encoders, Inc.
Goleta, CA 93117
May 07, 2004 RCM15si combines brushless motor commutation pulses and incremental position feedback in one optical encoder. Index and commutation information is transmitted via RS 485 serial interface, which also allows for motor and controller setup. Available with resolutions up to 2048 lines, encoder provides commutation for 4, 6, or 8 pole brushless motors. It features slide/gap mechanism and built-in servo groove that allows ±20° rotation of encoder.

MicroE Systems
Natick, MA 01760
Mar 17, 2004 Featuring 1 LSB optical index, Mercuryâ„¢ 1800 motion feedback encoder minimizes cogging for smooth control. All electronics are inside sensor making unit suited for high-noise applications. Model M1800S is fitted with high-density D-sub connector and is completely EMI shielded, while Model M1800H has high-density micro connector for tight spaces. Resolutions include 50 or 100 nm, linear, or up to 6.5 million CPR, rotary. Digital A-quad-B output is RS-422 compatible.

BEI - Duncan Electronics
Irvine, CA 92618
Mar 16, 2004 Series 920 miniature, incremental encoders are capable of accepting disc radii as small as 9.78 mm with resolutions to 2,450 ppr. Featuring 5-pin mating connector that mates with AMPHEONOL and MOLEX configurations, units measure 1.25 x 1.05 x 0.39 in. including caliper, connector, and PCB board. Opto-ASIC design includes phased array photo diode IC noted for ±0.010 in. tolerance to axial movement and 50 mA power consumption.

Renco Encoders, Inc.
Goleta, CA 93117
Feb 03, 2004 With custom ASIC, R35i provides brushless motor commutation and incremental position signals in 1.38 in. OD by 0.55 in. long package. Its 3-phase commutation pattern is available for 4-, 6-, and 8-pole brushless motors. Incremental encoder position resolutions (12) from 250–8192 line counts are available with A, B, and Z reference channels. Modular, rotary, optical encoder has output frequency response up to 500 KHz.

Encoder Technology
Cottonwood, AZ 86326
Dec 16, 2003 Series S20 and S25 Extreme Duty Wash Down Optical Encoders are suited for food processing and packaging equipment applications where high-pressure steam or caustic chemicals are needed to meet regulatory requirements. Both series meet IP66/IP67 and NEM6 enclosure requirements and can be manufactured in solid Stainless Steel. They have labyrinth, double sealed housing design and resolution to 16,384 cycles (S20) and 32,768 cycles (S25).

Baumer Ltd.
Southington, CT 06489 1534
Sep 10, 2003 ProCoder multi-turn, optical rotary encoder includes ProGeber software, allowing user to program resolution settings, zero points, direction, and bus ID nodes using Windows®-based PC. Featuring 200 G Shock protection and 29 programmable bits of resolution, ProCoder can be integrated into variety of bus systems including SSI, CANopen, DeviceNet, and Profibus via simply exchanged bus cover. Modular system measures 58 mm in dia x 89 mm in depth.

U.S. Digital
Vancouver, WA 98682 8713
Aug 06, 2003 Models H15D and H15S are non-contacting, rotary to digital position feedback devices with 2 radial ball bearings and standard ¼ in. diameter shaft. Units may be mounted and held in position by 4–40 machine screw holes in base, or by using attached servo ring and separate servo cleats. Both encoders allow for polarized connector that latches directly into encoder, while only H15D features internal RS422 differential line driver.

Encoder Products Co.
Sandpoint, ID 83864
Jun 13, 2003 Equipped with industrial-grade, metal, size 25 housing with double O-rings, Model XT20 Superseal X-Treme Encoderâ„¢ employs double case, sealed, encoder-within-a-sealed-encoder design that protects critical components. Superseal adds Teflon seals to bearing assembly, and construction offers additional sealing around cable ports as well as connector options, including M12 connector.

MicroE Systems
Natick, MA 01760
Jun 11, 2003 ChipEncoder™ provides rotary position feedback of 3,300–160,000 counts/revolution and 100–1,000 counts/mm linear feedback for precise, closed-loop motion control. PCB mount device has 3-channel output that includes reference mark and broad alignment tolerances for automated assembly; with no adjustments needed. Non-contact SMT optical encoder exhibits zero wear, backlash, and hysteresis and can replace packaged encoders in many applications.

Sensor Developments, Inc.
Orion, MI 48359
Mar 25, 2003 Suited for company's non-contact, infrared rotary torque sensor line, 1024 optical encoder provides accurate means of measuring torque and angle in dynamometer applications. Sensor includes digital infrared transmission system, which provides immunity to noise sources such as eddy current brakes or AC motors. It also offers analog output to represent torque load, and is designed as drop-in replacement for existing rotary transformer torque sensors.