MTS Sensors Temposonics R Series Datasheet

Temposonics
Magnetostrictive, Absolute, Non-contact
R-Series Models RP and RH
Synchronous Serial Interface (SSI) Output
Model RP Profile-style position sensor
FEATURES
„ Linear, Absolute Measurement
„ LEDs For Sensor Diagnostics
„ Non-Contact Sensing Technology
„ Linearity Deviation Less Than 0.01%
„ Repeatability Within 0.001%
„ Direct 24/25/26 Bit SSI Output, Gray/Binary Formats
„ Synchronous Measurement for Accurate Velocity/Acceleration
Calculations
BENEFITS
„ Superior Accuracy; Resolution Down to 0.5 Micron
„ Rugged Industrial Sensor
„ High-Speed Update Options
„ Linearity Correction Options
„ Velocity Output Option
„ Optional Differential Measurement Between Two Magnets
APPLICATIONS
„ Continuous Operation In Harsh Industrial Conditions
„ High Pressure Conditions
„ For Fast, Precision Motion Control
TYPICAL INDUSTRIES
„ Factory Automation
„ Fluid Power
„ Plastic Injection and Blow Molding
„ Material Handling and Packaging
„ Woodworking, Metalworking and Machine Tools
Linear-Position Sensors
Data Sheet
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Model RH Rod-style position sensor
Time-based Magnetostrictive position sensing principle
Movable position magnet
Magnetic field encompasses
entire waveguide - generated
by the interrogation pulse
Interrogation
Return wire
Waveguide
Strain-Pulse detector
Bias magnet
Benefits of Magnetostriction
Temposonics linear-position
magnetostrictive position sensing principle developed by MTS.
Within the sensing element, a sonic-strain pulse is induced in a
specially designed magnetostrictive waveguide by the momentary
interaction of two magnetic fields. One field comes from a moveable
permanent magnet that passes along the outside of the sensor. The
other field comes from an "interrogation" current pulse applied along
the waveguide. The resulting strain pulse travels at sonic speed along
the waveguide and is detected at the head of the sensing element.
The position of the magnet is determined with high precision and
speed by accurately measuring the elapsed time between the applica-
tion of the interrogation pulse and the arrival of the resulting strain
pulse with a high-speed counter. The elapsed time measurement is
directly proportional to the position of the permanent magnet and is
an absolute value. Therefore, the sensor's output signal corresponds
to absolute position, instead of incremental, and never requires
recalibration or re-homing after a power loss. Absolute, non-contact
sensing eliminates wear, and guarantees the best durability and
output repeatability.
All specifications are subject to change. Contact MTS for specifications and
engineering drawings that are critical to your application. Drawings contained
in this document are for reference only. Go to http://www.mtssensors.com for
the latest support documentation and related media.
SENS RS
O
Document Part Number
550989 Revision E
Magnetic field from
position magnet
Interaction of magnetic
fields causes waveguide to
generate a strain pulse
sensors use the time-based
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