Deflection gage 3540 series

compressiondeformationdial indicator

Widely used for measuring deformations in three- and four-point bend tests, compression tests and a variety of general-purpose deflection measurements. These strain gaged devices come with a magnetic base for easy mounting. Deflection is measured with a single arm with an attached spherical contact tip, similar to those on a dial indicator. The full bridge strain gaged construction provides an electrical output compatible with any electronics designed for a strain gaged transducer. The magnetic mounting base supplied with the deflectometer can be mounted to the desired reference surface, whether flat or round, and the tip can be easily positioned to measure deformations during the test. The mounting system is designed to enable convenient swing in / swing out positioning of the deflectometer, when needed, without having to realign the deflectometer between tests. All models feature a spring-loaded arm that can break free in the event of excessive displacement, protecting the deflection gage from damage. The upper arm exerts a small spring force against the specimen, which is sufficient to allow dynamic cyclic testing if desired, yet light enough in force to avoid influence on the test. These units come standard with the arm set to measure downward deflections when oriented in the upright position. They can be used upside down or in any orientation. The measuring ranges listed are total displacement. Model 3540 deflectometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers.