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Microminiature Gauging DVRT®

Microminiature Gauging DVRT®
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LORD PRODUCT DATASHEET Microminiature Gauging Displacement Sensor Designed specifically for tight spaces, the Microminiature Gauging DVRT® delivers high performance in a tiny package. A sapphire bearing and ruby ball guide the spring-loaded tip, providing an exceptionally smooth static and dynamic response. The Microminiature Gauging DVRT® features micron-to-sub-micron resolution, linear analog output, flat dynamic response to kHz levels, and very low temperature coefficients. Extremely lightweight, captive cores are tiny yet rugged. Superelastic, corrosion-resistant alloys provide resistance to kinking and permanent deformation, and allow complete submersion of the instrument Features & Benefits System Overview High Performance Sensor Design micron resolution with large stroke/size ratio gauging pin enables measurement on moving parts frictionless design for robust use over millions of cycles suitable for use in harsh fluids and environments Ease of Use world’s smallest linear displacement sensor plug and play usability easily customized to suit specific requirements signal conditioning options for any application Applications Process Control for Production-Line Monitoring Miniature Position Control Elements Linear & Angular Motion Control Measuring Strain and Deflection in Materials and Structures Dimensional Gauging for Quality Control Core position is detected by measuring the coils’ differential reluctance using a sine wave 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 Teflon® cables 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 short term immersion in saline and pressurized oil. Units available for long term immersion, corrosive and high pressure environments can be custom built to meet such requirements. LORD MicroStrain®’s desktop consoles and in-line signal conditioners provide the Microminiature Gauging DVRT® with plug and play housing, power, analog output, LCD display, RS-232 output and software. A range of modular positioning attachments and custom strokes are also available.

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MG- DVRT® Microminiature Gauging Displacement Sensor Specifications Electrical Specifications Obtained using DEMOD-DVRT® and DVRT® with 800 Hz low pass filter at constant temperature Mechanical Specifications Overall body length ± 1 .0% using straight line ± 0.1% using polynomial 24 mm for 3 mm stroke 40 mm for 6 mm stroke 50 mm for 9 mm stroke 24 mm for high res version Outside diameter DEMOD output/sensor range Spring stiffness 2000 to 1 (with filter 3 dB down at 800 Hz, standard); 600 to 1 (unfiltered) noise measured peak to peak Bearing materials sapphire on stainless steel Standard...

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