• By LORD MicroStrain
  • Posted Monday, July 27, 2015 - 08:45

Sensors for Displacement Measuring
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Sensors for Displacement Measuring

Sensors for Displacement Measuring

Sub/Microminiature DVRTs and Gauging DVRTs for Precise Results

 

Why measure displacement?

∙ Detects strain & deflection in materials/structures
∙ Adds process control for production-line monitoring
∙ Ensures linear & angular motion control
∙ Provides dimensional gauging for quality control
∙ Serves as reliable indicator of system degradation

 

LORD MicroStrain DVRTs:

∙ offer excellent length-to-sensing stroke ratio
∙ have frictionless design for use over millions of cycles
∙ are designed for use in harsh fluids and environments
∙ offer simple integration with plug-and-play usability
∙ are easily customized to your specific requirements

 

Microminiature DVRTs


M-DVRT® Linear Displacement Sensor

Outside Diameter:
1.5 mm (standard version)
1.8 mm (high resolution)

Linear Stroke Length:
3, 6, 9 mm (standard)
1.5 mm (high resolution)

Approx. Body Length:
4mm + 2.5x stroke length


MG-DVRT® Linear Displacement Gauge Sensor

Outside Diameter:
1.8 mm (smooth body)

Linear Stroke Length:
3, 6, 9 mm (standard)
1.5 mm (high resolution)

Approx. Body Length:
4mm + 6x stroke length

SG-DVRT® Linear Displacement Gauge Sensor

Outside Diameter:
6.0 mm (smooth body)
8.0 mm for 38 mm stroke

Linear Stroke Length:
4, 8, 24, 38 mm (standard)
6 mm (high resolution)
500 μm or less (nano)

Approx. Body Length:
10mm + 5x stroke length

∙ Microminiature DVRT resolution: 300nm to 4.5 μm
∙ Subminiature DVRT resolution: 125nm to 9.5 μm
∙ Stainless steel housing for long-lasting performance
∙ Low Signal to Noise ratio (M/MG-DVRT - 2000:1, S/SG-DVRT - 4200:1)
∙ Engineered for operation in temperatures from -55° to 170° C
∙ Keyed 4-pin Lemo connector compatible with LORD MicroStrain DEMOD signal conditioners

Subminiature DVRTs

S-DVRT® Linear Displacement Sensor

Outside Diameter:
4.76 mm (3/16 inch)

Linear Stroke Length:
4, 8, 24, 38 mm (standard)
6 mm (high resolution)
500 μm or less (nano)

Approx. Body Length:
10mm + 3x stroke length

 

REAL-WORLD APPLICATIONS:

 

  Assembly Verification

  Employing a DVRT provides  
  verification of proper assembly
  dimensions, especially when it is
  used indifferential mode (when
  one sensor finds a reference
  surface, the other locates the
  part in question).

Precise Feedback For Motion Control

LORD MicroStrain DVRTs are ideal
for motion control applications,
particularly ones requiring secondary
confirmation of motion, or for other
applications that cannot use standard
encoders. Examples: robotics, semi-
conductor material handling, aperture
control, valve position on vehicles,
electronic cam motion loop

Aerospace Fuel Tank Monitoring
Using an SG-DVRT with a custom-designed hermetic housing and an integrated connector allowed customers to monitor the deflection of a rocket fuel tank, which in turn enabled
researchers to monitor the amount of fuel expended.

 

Condition Monitoring

A multiple-MG-DVRT setup allowed aircraft OEM customers to determine motion in 6DoF, which successfully monitored degradation in elastomeric

bearing stiffness.

 

All solutions are backed by LORD MicroStrain’s world-recognized Support Staff.
For pricing and ordering information, contact LORD MicroStrain Sales: 800.449.3878