Model DS - Standard Deflectometer

Commonly referred to as Displacement Gages, these versatile units can be used to measure deformation in bend tests, compression tests or any other component movement during the test cycle.

The operation of our deflectometer is quite similar to a standard mechanical dial indicator. Deflection is measured with a single, break-away, contact arm. The contact arm features a replaceable, spherical contact tip. Contact force is provided by a pre-loaded torsion spring. The contact force is sufficient to allow dynamic cyclic testing, yet light enough to avoid undue influence on the test.   The spring loaded arm is designed to break-free in the event of excessive displacement, protecting the gage from damage.

As with our extensometers, our deflectometers feature a full, 350 ohm, strain gage bridge design and are compatible with most any brand test equipment. We can install the proper connector to interface to most any electronics including Instron. If your test frame or set-up does not have the required strain signal conditioner, we can supply a stand-alone signal conditioner calibrated with your extensometer. This will allow you to use a chart recorder, digital display, or data acquisition card.

An optional magnetic base is available for most models to allow easy mounting to a reference surface (flat or round). The magnetic base has a built-in fine adjustment to allow precise positioning of the contact tip. Elevated temperature testing will require additional mounting considerations as the magnetic base can only be used for standard temperature testing.

Our deflectometers come configured for the standard measurement of downward deflections with a corresponding negative voltage output. However, the unit can be inverted for measurements in the opposite direction and/or the output polarity can be changed.   Please consult the factory with your specific needs.

Standard models available in any combination of measuring range and temperature range listed in the chart below.   If you need a deflectometer other than those listed, please contact us with your needs.