News
"High Performance Position Sensor is the Smallest Size Sensor on the Market"
Burlington, Vermont, March 10, 2002 - MicroStrain, Inc. a leading
designer and manufacturer of micro sensors, today announced the
introduction of its new Microminiature gauging DVRT, a tiny position
sensor with captive spring and guided core. These linear position
sensors are available in 1.5, 3, and 6mm full-scale (FS) stroke
lengths. The device combines high performance in a microminiature
package.
Standard resolution is 1.5 microns, linearity +/- .75% of FS, bandwidth
800 Hz. High-resolution microminiature gauging DVRT's are available as
custom units, these can resolve 0.5 microns at 800 Hz bandwidth. The
sensors are fully submergible, and 3 mm stroke lengths are available
from stock.
"This is ideal for critical linear displacement measurements - the
Microminiature DVRT delivers tremendous performance in the smallest
package. Advancements in MicroStrain's product development, material
improvements and the never ending miniaturization of electronics have
resulted in a rugged, fast and sensitive instrument," said Steve Arms,
President of MicroStrain. "The applications range from valve position
measurement to hydraulic controls and we believe that its submersion
capabilities in aqueous environments are a powerful benefit."
MicroStrain has developed patented temperature compensation electronics
that use the DVRT's coils to sense both thermal gradients and the
overall temperature of the sensor, and its circuits employ these
signals as feedback to minimize thermally induced offset and span
errors. The standard temperature coefficients are .002%/degree C on the
offset and .03%/degree C on the span. Typically, these thermal errors
are reduced by at least a factor of 5 by using proprietary temperature
compensation electronics. Micro-gauging DVRT's are provided in
submergible, all stainless steel, 8-32 threaded packaging. Each sensor
comes with an 18" cable. The cable is Teflon insulated, shielded, and
contains three separately insulated conductors. Each conductor is a
rope of wire, reinforced with a center strand of stainless steel wire.
"We love the reliability, size and superior sensitivity of this product. We think the applications are unlimited" said Arms.
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