Distributing Tomorrow’s Technologies For Today’s Designs Toll-Free: 1-800-777-7334 Since 1970 http://www.cdiweb.com/PortalMain.aspx?pid=704 R30A – AC Operated, Light Weight RVDT  AC operation  +/-60º angular sensing range  Light weight  Non-contact design  Wide operating temperature range  Size 11 servo mount  Anodized aluminum housing DESCRIPTION The R30A RVDT (Rotary Variable Differential Transformer) is an angular position sensor that incorporates a proprietary non-contact design which dramatically improves long term reliability when compared to other traditional rotary devices such as synchros, resolvers and potentiometers. This unique design eliminates assemblies that degrade over time such as slip rings, rotor windings, contact brushes and wipers, without sacrificing accuracy. High reliability and performance are achieved through the use of a specially shaped rotor and wound coil that together simulates the linear displacement of a Linear Variable Differential Transformer (LVDT). Rotational movement of the rotor shaft results in a linear change in the output signal directly proportional to change in the shaft angle, while the phase of this output signal indicates the direction of displacement from the null point. Non- contact electromagnetic coupling of the rotor provides infinite resolution thus enabling absolute measurements to a fraction of a degree. AC operation eliminates the need for integrated signal conditioning components, thereby offering the user an extremely wide operating temperature range of -55°C to +150°C. Factory calibrated to operate over a ±30 degree range, the R30A offers a nonlinearity of less than ±0.25% of full scale. Extended range operation up to a maximum of ±60° is possible with compromised linearity. Packaged in a small, size 11 servo mount aluminum housing with flying lead termination, the R30A is ideal for space restrictive applications. Also see our other models, R36AS (stainless steel housing, MS style connector), RSYN (high output, shock and vibration tolerant), R30D and R60D (bipolar DC operation), and the RVIT-15 Series (single ended DC operation, voltage or current output). Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners. Data sheets can be downloaded from our web site at: http://www.meas-spec.com/datasheets.aspx ® MEAS acquired Schaevitz Sensors and the Schaevitz trademark in 2000. FEATURES APPLICATIONS  High accuracy  Valve position  Infinite resolution  Machine tool equipment  Long term reliability  Rotary actuator feedback o o  Wide -55 to +150 C operating temp range  Dancer arm position  Rugged anodized aluminum housing  Process control  Shielded ABEC 3 precision bearings R30A Rev. 2 www.meas-spec.com 2012-february 1/3 Component Distributors Inc. (CDI) Toll-Free: 1-800-777-7334 E-Mail: sales@cdiweb.com Web: www.cdiweb.com/PortalMain.aspx?pid=704 Distributing Tomorrow’s Technologies For Today’s Designs Toll-Free: 1-800-777-7334 Since 1970 http://www.cdiweb.com/PortalMain.aspx?pid=704 R30A – AC Operated, Light Weight RVDT PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter @10 KHz Input Frequency (recommended) @2.5KHz Input Frequency Angular range ±30º ±40º ±60º ±30º ±40º ±60º Linearity, % of FS ±0.25% max ±0.5% max ±2% ±0.25% max ±0.5% max ±2% Output at range end (*) 87mV/V 116mV/V 174mV/V 69 mV/V 92 mV/V 138 mV/V Sensitivity 2.9 mV/V/º 2.3 mV/V/º Temp coefficient of sensitivity 0.02%/ºF [0.036%/ºC], 20 to +160ºF [-7 to +71ºC] Not specified Input / Output impedances 370Ω / 1300 Ω 125Ω / 500Ω º Phase shift +3 +35º Input voltage and frequency 3 VRMS, 2.5 to 10 KHz (10KHz recommended) Null voltage 0.5% of FSO, maximum ENVIRONMENTAL AND MECHANICAL SPECIFICATIONS Operating temperature -67°F to +300°F [-55°C to 150°C] Bearings Shielded ABEC 3 precision Shaft diameter 3/16 inch [4.75 mm] Housing material Aluminum, anodized Mounting Size 11 servo mount per BU-ORD -6 2 -6 2 Moment of inertia 0.53 x 10 inch.lb-force.second [0.61 x 10 Kg-force.cm.second ] Maximum torque, unbalance 0.004 inch.ounce-force [0.3 gram-force.cm] Maximum torque, friction 0.015 inch.ounce-force [1.1 gram-force.cm] Shaft load capability 10 lb [4.5Kg] Axial; 8 lb [3.6 Kg] Radial Electrical connection 6 lead wires, 28AWG , Teflon insulation, 12 inches [3 meters] long Weight 1.3 oz [36 Grams] Notes: All values are nominal unless otherwise noted (*): Unit for output at stroke ends is millivolt per volt of excitation (input voltage) FS (Full Scale) is 2xAº for ±Aº angular range FSO (Full Scale Output) is the output at Aº angular position for ±Aº range DIMENSIONS Dimensions are in inches (mm) R30A Rev. 2 www.meas-spec.com 2012-february 2/3 Component Distributors Inc. (CDI) Toll-Free: 1-800-777-7334 E-Mail: sales@cdiweb.com Web: www.cdiweb.com/PortalMain.aspx?pid=704 Distributing Tomorrow’s Technologies For Today’s Designs Toll-Free: 1-800-777-7334 Since 1970 http://www.cdiweb.com/PortalMain.aspx?pid=704 R30A – AC Operated, Light Weight RVDT WIRING DIAGRAM ORDERING INFORMATION Description Model Part Number RVDT ±30º, 10KHz calibration (standard) R30A 02560231-000 OPTIONS RVDT with ±40º, 10KHz calibration 02560231-140 RVDT with ±60º, 10KHz calibration 02560231-160 RVDT with 2.5KHz calibration 02560231-2XX ACCESSORIES 66530072-000 R-FLEX multipurpose coupling kit Refer to our “Accessories for RVDT’s and RVIT’s” brochure for our RVDT signal conditioning instrumentation and other accessories TECHNICAL CONTACT INFORMATION NORTH AMERICA EUROPE ASIA Measurement Specialties, Inc. MEAS Deutschland GmbH Measurement Specialties China Ltd. 1000 Lucas Way Hauert 13 No. 26, Langshan Road Hampton, VA 23666 D-44227 Dortmund High-tech Park (North) United States Germany Nanshan District, Shenzhen 518057 Phone: +1-800-745-8008 Phone: +49-(0)231-9740-0 China Fax: +1-757-766-4297 Fax: +49-(0)231-9740-20 Phone: +86-755-33305088 Email: sales@meas-spec.com Email: info.de@meas-spec.com Fax: +86-755-33305099 Web: www.meas-spec.com Web: www.meas-spec.com Email: info.cn@meas-spec.com Web: www.meas-spec.com The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. R30A Rev. 2 www.meas-spec.com 2012-february 3/3 Component Distributors Inc. (CDI) Toll-Free: 1-800-777-7334 E-Mail: sales@cdiweb.com Web: www.cdiweb.com/PortalMain.aspx?pid=704