| Description
Designed to get into tight spaces, the subminiature gauging DVRT® delivers high performance
in a small package. A ruby bearing and hardened stainless steel ball guide the springloaded
tip, providing an exceptionally smooth static and dynamic response and
resistance to side load.
Features of the subminiature DVRT® includes: sub-micron resolution, linear
analog output, flat dynamic response to kHz levels, and very low temperature coefficients.
Extremely lightweight, captive cores are small yet rugged. Manufactured using corrosion-resistant
alloys, the subminiature gauging DVRTs® are suitable for short-term submersion in harsh media
such as brake fluid and hot saline. Units available for long-term submersion can be custom built to meet the specific application requirements.
Miniature "plug and play" signal conditioners provide linear DC output when supplied
with unregulated DC power. Multichannel, OEM and digital display systems are also available. Custom ranges are available on request.
How it works
Core position is detected by measuring the coils' differential reluctance, using
a sinewave excitation and synchronous demodulator. This differential detection method
provides a very sensitive measure of core position while cancelling out temperature
effects.
The transducers' coils and flex circuit leads are sealed in vacuum-pumped epoxy,
within the stainless-steel case. This provides outstanding environmental resistance.
The DVRT® has been successfully employed in harsh applications, including immersion
in saline and pressurized oil. |
Applications
Miniature control elements for automotive and robotic systems
Process control for production-line monitoring
Dimensional gauging for quality control applications
Measuring strain and deflection in materials science and civil structures
Linear/angular positioning of optical components
Miniature force, torque, acceleration sensors
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