R36AS AC Operated RVDT for Harsh Environments SPECIFICATIONS AC operation 60 degree angular sensing range Non-contact electrical design Wide operating temperature range Size 15 servo mount Stainless steel housing MS style hermetic connector The R36AS 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 FEATURES accuracy. High accuracy Infinite resolution High reliability and performance are achieved through the use of a specially shaped rotor and wound stator coil that together Long term reliability simulate the operation of a Linear Variable Differential Wide -55 to +150 C operating temp Transformer (LVDT). Rotational movement of the rotor shaft range results in a linear change in the amplitude of the output signal, Rugged stainless steel housing directly proportional to the shaft angle change, while the phase Shielded ABEC 3 precision bearings of this signal indicates the direction of displacement from the null point. Non-contact electromagnetic coupling of the rotor provide infinite resolution. APPLICATIONS Valve position AC operation eliminates the need for integrated signal conditioning components, thereby offering the user a very wide Machine tool equipment operating temperature range of -55C to +150C. Factory Rotary actuator feedback calibrated to operate over a 30 degree range, the R36AS offers Dancer arm position a non-linearity of less than 0.5% of full range. Extended range Process control operation up to a maximum of 60 degrees is possible with increased non-linearity. Packaged in Size 15 servo mount stainless steel housing, an MS style hermetic connector, and a shaft seal, the R36AS is the perfect choice for angular position sensing in harsh environments. SENSOR SOLUTIONS /// R36AS Rev 9 7/2016 Page 1 R36AS AC Operated RVDT for Harsh Environments PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter 2.5kHz Input Frequency (recommended) 10kHz Input Frequency Angular range, degrees 30 45 60 30 45 60 Non-linearity, % of FR 0.5% 1% 3% 0.5% 1% 3% Output at range ends (*) 66mV/V 99mV/V 132mV/V 51 mV/V 76 mV/V 102 mV/V Sensitivity 2.2 mV/V/degree 1.7 mV/V/degree Temp coefficient of sensitivity 0.02%/F 0.036%/C +20 to +160F -7 to +71C Not specified Input / Output impedances 750 / 2000 2500 / 5400 Phase shift +4 -17 Input voltage and frequency 3 VRMS 2.5 to 10 kHz (2.5kHz recommended) Null voltage 0.5% of FRO, maximum ENVIRONMENTAL AND MECHANICAL SPECIFICATIONS Operating temperature -67F to +300F -55C to 150C Mechanical angular range 360 degrees (no stops) Bearings Shielded ABEC 3 precision Shaft diameter 3/16 inch 4.75 mm Housing material AISI 304 stainless steel Mounting Size 15 servo mount per BU-ORD -6 2 -6 2 Moment of inertia 1.62 x 10 inch.lb-force.second 1.866 x 10 Kg-force.cm.second Maximum torque, unbalance 0.012 inch.ounce-force 0.87 gram-force.cm Maximum torque, friction 0.75 inch.ounce-force 54 gram-force.cm Shaft load capability 25 lb 11Kg Axial or Radial Electrical connection 6-pin MS type connector (MIL-C-5015) Weight 9 oz 255 Grams IP 60529 rating IP65 Notes: All values are nominal unless otherwise noted Dimensions are in inch mm unless otherwise noted (*): Unit for output at range ends is millivolt per volt of excitation (input voltage) FR (Full Range) is the angular range, end to end 2xA for A angular range FRO (Full Range Output): Algebraic difference in outputs measured at the ends of the range DIMENSIONS Dimensions are in inch (mm) SENSOR SOLUTIONS /// R36AS Rev 9 7/2016 Page 2