MTS Sensors Temposonics R Series Datasheet

Temposonics
Magnetostrictive, Absolute, Non-contact
R-Series Models RP and RH
Model RP Profile-style position sensor
FEATURES
„ Linear, Absolute Measurement
„ LEDs For Sensor Diagnostics
„ Superior Accuracy, Resolution down to 1 µm
„ Non-Contact Sensing Technology
„ Linearity Deviation Less Than 0.01%
„ Repeatability Within 0.001%
„ Direct Profibus-DP Output (Position +Velocity)
„ Standard and Multi-magnet position measurements
(up to 20 positions per sensor)
BENEFITS
„ Rugged Industrial Sensor
„ Fullfills All Requirements of Profibus-DP
(EN 50170) Protocol
„ Profibus-DP Provides Powerful Functions for
Diagnostics and Configuration
„ Linearity Correction Options
APPLICATIONS
„ Continuous Operation In Harsh Industrial Conditions
„ High Pressure Conditions
„ For Accurate, Multi-Magnet Position Measurement
(up to 20 positions per sensor)
TYPICAL INDUSTRIES
„ Factory Automation
„ Fluid Power
„ Plastic Injection and Blow Molding
„ Material Handling and Packaging
Linear-Position Sensors
Profibus-DP Output
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 sensors use the time-based magneto-
strictive 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
550990 Revision C
Magnetic field from
position magnet
Interaction of magnetic
fields causes waveguide to
generate a strain pulse