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LORD MicroStrain Sensing Systems Microminiature Gauging LVDT

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Microminiature Gauging LVDT -  - LORD MicroStrain Sensing Systems
Williston, VT, USA
Microminiature Gauging LVDT
Microminiature Gauging LVDT
The World's Smallest Linear Gauge! Differential Variable Reluctance Transducer (or "half bridge LVDT") Overview 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 Sensor Design 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. Features and Benefits High Performance 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

The World's Smallest Linear Gauge!
Differential Variable Reluctance Transducer (or "half bridge LVDT")

Overview

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

Sensor Design

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.

Features and Benefits

High Performance

  • 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
Supplier's Site Datasheet

Technical Specifications

  LORD MicroStrain Sensing Systems
Product Category Linear Position Sensors
Product Name Microminiature Gauging LVDT
Sensor Technology Variable Reluctance Linear Position Sensor/Switch
Body Shape Cylindrical
Measurement Range 0.0591 to 0.3543 inch (1.5 to 9 mm)
Repeatability 0.0394 mils (1 µm)
Resolution 3.00E-4 to 0.0045 mm (1.18E-5 to 1.77E-4 inches)
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