RVIT 15-60 & 15-120i Rotary Variable Inductance Transducers DC operation Non-contact electrical design Infinite resolution Up to 120 degree sensing range 3VDC ratiometric or 4-20mA output 0.25% linearity Size 15 servo or flange mount Anodized aluminum housing DESCRIPTION The RVIT 15-60 and RVIT 15-120i are DC operated, non-contact, angular position sensors featuring MEAS proprietary RVIT (Rotary Variable Inductance Transducer) technology. Operating from a single rail DC voltage supply, they provide either a 3VDC (RVIT 15-60) or 4-20mA (RVIT 15-120i) output, over a 120 degree angular sensing range. The RVIT design utilizes a set of four printed circuit coils and a light-weight conductive spoiler to achieve superior performance with a low moment of inertia. During operation, the light weight spoiler rotates with the transducer shaft, differentially altering the inductance of the printed circuit planar coils. The resulting unbalance is precisely measured using a patented autoplex circuit. This signal is then converted to a linear DC output voltage, proportional to the angle of the rotor shaft. The digital circuit is extremely resistant to environmental disturbances such as EMI and RFI, and is compatible for use with most analog position feedback systems. The RVIT 15-60 and RVIT 15-120i offer exceptional performance at a competitive price along with the interfacing flexibility of the 3 VDC and 4-20 mA outputs. The RVIT 15-60 emulates a potentiometer in that the output voltage is ratiometric to the supply voltage, within the limits of the specification. Other standard features include a wide operating temperature range, infinite resolution, and an extremely long rotational life. For higher volume applications, specialized options include special angular sensing ranges, and custom unipolar or bipolar output voltage scaling. Also see our other DC operated, angular position sensor models, R60D (bipolar DC operation, servo size 11 RVIT), R120LC (5VDC operation, low cost RVIT) and R30D (bipolar DC operated RVDT). Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners. Data sheets can be downloaded from our web site at: RVIT 15-60/15-120i Rotary Variable Inductance Transducers PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter RVIT 15-60 RVIT 15-120i Angular range 60 degrees 0 to 120 degrees Input voltage 4.0 to 5.5VDC 10 to 28VDC (not to exceed 30VDC) Input current 14mA 41mA Sensitivity (*) 10 mV/V/degree 0.133 mA/degree Output at range ends (*) 3.0VDC 1 to 5VDC (with 250 Ohm loop resistor) Output current 2mA 4 to 20mA Output impedance 1 maximum 250 maximum Temp coefficient of output 0.02% of FSO per F 0.036% of FSO per C , over operating temperature range Non-linearity 0.25% of FR Repeatability & hysteresis 0.1% of FRO maximum Frequency response 25Hz -3dB ENVIRONMENTAL AND MECHANICAL SPECIFICATIONS Temperature range 0F to +170F -18C to 77C Operating -67F to +257F -55C to 125C Storage Mechanical angular range 360 degrees (no stops) Bearings ABEC 3 precision, matched and preloaded Shaft diameter 3/16 inch 4.76mm Housing material Aluminum, black anodize Mounting Size 15 servo mount BU-ORD (standard) or Flange mount with shaft seal (with accessory) Maximum torque 0.12 inch.ounce-force 8.6 gram-force.cm Shaft load capability 10 lb 4.5Kg Axial and Radial Electrical connection 3 conductor cable, AWG 26, under PVC jacket, 12 inches 30cm long Weight 2.5 oz 70grams IEC 60529 rating IP60 Notes: All values are nominal unless otherwise noted FR (Full Range) is the angular range, end to end 2xA for A angular range, A for a 0 to A range FSO (Full Scale Output): Largest absolute value of the outputs measured at the ends of the range FRO (Full Range Output): Algebraic difference in outputs measured at the ends of the range (*) Ratiometric to input voltage RVIT-15-60/15-120i Rev. 7 www.meas-spec.com 2015-July 2/4