Deflection Gages (Deflectometers) – Model 3540
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. Most often they are connected to a test machine controller with electronics for a strain channel, and Epsilon will equip the deflectometer with a compatible connector that is wired to plug directly into the controller. For systems lacking the required electronics, Epsilon can provide a variety of signal conditioning solutions that enable connecting to data acquisition systems or other equipment.
features
- • Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
- • General purpose deflection sensor covers many test requirements; may be used in any orientation.
- • Comes with an adjustable magnetic base for easy mounting and convenient swing in / swing out positioning.
- • Spring loaded arm detaches to prevent damage from overtravel.
- • Meets ASTM and ISO accuracy classes as follows.
- • -001M, -004M, -006M, -005T, -015T, -025T: ASTM E2309 Class A ISO 9513 Class 1 ASTM E83 Class B-2 (assuming 50 mm gauge length per D790 and D6272)
- • -012M, -025M, -050M, -050T, -100T, -200T: ASTM E2309 Class B ISO 9513 Class 2 ASTM E83 Class C (assuming 50 mm gauge length per D790 and D6272)
- • All standard units have linearity of 0.25% of FS or better.
- • Includes the Epsilon Shunt Calibration System for on-site electrical calibration.
- • Rugged, dual flexure design for improved performance.
- • Includes high quality foam lined case.