UGC-VE-4109-3D 9 MPx 3D Stereo Video Extensometer

Stereo pair of 9 MPx cameras that measures in 3D and cancels out-of-plane error

The UGC-VE-4109-3D is a non-contact optical (video) extensometer from the X-Sight 4000-3D Series, supplied, configured and supported by Universal Grip. It tracks gauge marks on the specimen with two 9 MPx cameras in one housing and reports strain, total length, delta length and angle in real time, so it can stay on the specimen through break with no knife edges to slip or damage. The stereoscopic camera pair captures spatial movement and deformation, making results resilient to out-of-plane specimen motion and improving accuracy.

 

Measuring length, accuracy class and sampling rate

Per ISO 9513 the UGC-VE-4109-3D measures 220 mm at Class 0.5, 440 mm at Class 1. Class 0.5 is the tight class labs choose for modulus and proof-strength work; ISO 6892-1 calls for Class 1 or better for yield and proof strength and allows Class 2 for elongation after fracture.

Typical sampling is 75 Hz (32 Hz with the full image), and narrowing the view width raises it to 1 kHz. Higher pixel counts trade frame rate for field of view: at this resolution the camera favours reach and resolution over raw speed.

As a sizing check: the Class 1 measuring length of 440 mm is long enough to follow a gauge section of about 0.4 m, to measure several gauge lengths on one long specimen, or to watch more than one specimen at once. We confirm the usable field from your specimen, grips and expected elongation.

 

What the UGC-VE-4109-3D is best for

• rubber and elastomers to ASTM D412 and ISO 37, where elongation can exceed 500%

• thin plastic film to ASTM D882

• textiles and webbing to ASTM D5034 and ASTM D5035

• foams to ASTM D3574 and ISO 1798

 

Why measure in 3D

A single camera sees only in-plane motion, so a specimen that moves toward or away from the lens reads as false strain. The stereo pair in the 4000-3D housing triangulates every gauge mark in three dimensions, which removes that error for thin sheet, film, composites and parts that twist, bow or slip in the grips. The 3D line-probe module is included.

 

Choosing the lens and working distance

Measuring length, lens focal length and working distance are linked: choose two and the third follows. For the Class 0.5 field of view (220 mm high by 116 mm wide) the working distances are 12 mm lens 165 mm, 16 mm lens 230 mm, 25 mm lens 380 mm, 35 mm lens 558 mm (from the front cover). Longer working distances reduce LED intensity and can need longer shutter times, so tell us your frame and chamber geometry and we will pick the lens.

 

Connects to your testing machine

Strain is streamed live to the test-machine controller over DOLI Binary, MODBUS, HP Video, TCP/IP or RS232, as an analog signal through auxiliary D/A converters, or as an encoder-style quadrature pulse. The JSON and MRT APIs let your test software start and stop measurement, switch methods and set the gauge length. That is how we retrofit video extensometers to Instron, MTS, ZwickRoell, Shimadzu, Test Resources, ADMET and Galdabini frames; see retrofitting a video extensometer to an existing machine.

 

Compare the UGC-VE-4109-3D with similar models

• UGC-VE-4106-3D: 4000-3D Series stereo, ASTM-optimized, ASTM E83 Class B-1, 200 Hz typical

• UGC-VE-4105-3D: 4000-3D Series stereo, 5 MPx, Class 0.5 110 mm, 175 Hz typical

• UGC-VE-2109: 2000 Series single-camera, 9 MPx, Class 0.5 220 mm, 75 Hz typical

• UGC-VE-2209: 2000 Series dual-camera, 9 MPx, Class 0.5 420 mm, 75 Hz typical

Not sure which model fits? Read how to choose an extensometer, gauge length selection for video extensometers, or compare all models on our video extensometer page.