UGC-VE-2201 1 MPx Dual-Camera Video Extensometer

Two 1 MPx cameras joined into one field of view for long and high-elongation specimens

The UGC-VE-2201 is a non-contact optical (video) extensometer from the X-Sight 2000 Series, supplied, configured and supported by Universal Grip. It tracks gauge marks on the specimen with two 1 MPx cameras 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. Stacked camera units are calibrated with a joined grid, nearly doubling the measuring length per added camera.

 

Measuring length, accuracy class and sampling rate

Per ISO 9513 the UGC-VE-2201 measures 2 × 80 mm at Class 0.5, 2 × 160 mm at Class 1 and 600 mm at Class 2. 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 200 Hz (170 Hz with the full image), and narrowing the view width raises it to 1 kHz. That makes it the right choice when test speed or strain rate is high.

As a sizing check: the Class 2 measuring length of 600 mm is long enough to follow a gauge section of about 0.6 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-2201 is best for

• fast tests on long or high-elongation specimens, such as wire and strand, at full 200 Hz sampling

• two gauge zones measured on one specimen in separated mode

• long-gauge metals such as ASTM A370 bar and ASTM A615 rebar

• cyclic tests on long specimens

 

Joined, separated or dual fields of view

The two 200 mm units can be joined with one calibration grid so a gauge mark can travel from one camera's view into the next, nearly doubling the measuring length. They can also run separated, to measure two zones of a long specimen, or as two independent single-camera extensometers. Each unit weighs 1.4 kg and draws 12 W.

 

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 (2 × 80 mm high by 64 mm wide) the working distances are 12 mm lens 127 mm, 16 mm lens 169 mm, 25 mm lens 297 mm, 35 mm lens 455 mm, 50 mm lens 685 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-2201 with similar models

• UGC-VE-2202: 2000 Series dual-camera, 2 MPx, Class 0.5 2 × 110 mm, 90 Hz typical

• UGC-VE-2205: 2000 Series dual-camera, 5 MPx, Class 0.5 2 × 130 mm, 175 Hz typical

• UGC-VE-2101: 2000 Series single-camera, 1 MPx, Class 0.5 80 mm, 200 Hz typical

• UGC-VE-2301: 2000 Series triple-camera, 1 MPx, Class 0.5 3 × 80 mm, 200 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.