RVIT 15-60 & 15-120i – Rotary Variable Inductance Transducers
RVIT-15-60/15-120i Rev. 7 www.meas-spec.com 2015-July
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• 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:
http://www.meas-spec.com/datasheets.aspx
MEAS acquired Schaevitz Sensors and the Schaevitz
TM
trademark in 2000.
FEATURES APPLICATIONS
• Extremely long rotational life
• Internal voltage regulation
• Throttle level feedback
• Shielded ABEC 3 precision bearings
• Rotary actuator feedback
• Rugged aluminum housing
• Flange mount with shaft seal
(optional)
