Product Spotlight: Linear displacement sensors

May 1, 2007
Capacitive sensors Elite series non-contact sensors measure very small displacements of conductive materials with high resolution in precise positioning

Capacitive sensors

Elite series non-contact sensors measure very small displacements of conductive materials with high resolution in precise positioning applications.

Features & benefits

  • 0.01 to 10 mm measuring ranges; 1 nm resolution

  • CPL190 and CPL290 capacitive sensors and MM190 meter/signal processing module

  • Differential analog signals to data acquisition system for high signal to noise ratio

  • Odd and even-numbered channels use inverted excitation signals to null ground current flow and eliminate noise and offset in differential measurements

Lion Precision
St. Paul, Minn.
(651) 484-6544
www.lionprecision.com
Circle 151

Encoder position sensors

R-series sensors offer fast data processing and accurate sensing for servo control applications.

Features & benefits

  • Use Temposonics magnetostrictive technology and provide same absolute serial encoder interface as in CNCs and motion controls

  • Position sensing as low as 1 mm; resolution of 1 to 100 µm

  • SSI output has optional data update rate of 250 µsec synchronized with external clock, regardless of stroke, with as few as 16 µsec between measurement data clock cycles

  • Measurement non-linearity correction improves sensing accuracy to as low ±10 µm

MTS Systems Corp., Sensors Div.
Cary, N.C.
(919) 677-0100
www.mtssensors.comCircle 152

Displacement transducers

Compact WA and WI inductive displacement transducers are made for measurements with close to infinite resolution, 80 mV/V sensitivity, and IP67 protection.

Features & benefits

  • WA has maximum measuring length of 500 mm; accuracy of 0.2%

  • WA features quarter-bridge design with optional 0.5 to 10 V output

  • WI inductive half-bridge models come with measuring lengths of 2.5, 5, and 10 mm; shaft diameter of 8 mm

  • WI have linearity deviation of ±0.2%

HBM Inc.
Marlborough, Mass.
(800) 578-4260
www.hbm.com
Circle 153

Magnetostrictive position sensors

Posichron PCST27 sensors are absolute, contact, and wear-free sensors rated to IP69K for underwater use in hydraulic cylinders.

Features & benefits

  • Operating pressure to 5,800 psi; 19 ft measuring range

  • Analog output of 0-10 V, 4-20 mA, digital pulse output start/stop, or SSI

  • 3/4 in.-16 thread or M18 × 1.5 threads available

  • Tolerate 100 shocks of 50 g; each has 11 msec duration

  • Full-scale linearity rating of ±0.02%

ASM Sensors Inc.Elmhurst, Ill.
(630) 832-3202
www.asmsensors.comCircle 154

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