The deflectometer is widely used to measure the deformation of 3-point and 4-point bending tests, as well as compression tests and a large number of general deformation tests. The strain gauge type deflection gauge comes with a magnet base for easy installation.
A single measuring arm with a spherical contact is used to measure deflection, similar to the pointer on a dial indicator. The full bridge strain gauge structure provides an electrical output that is compatible with any electronic component suitable for strain gauge sensors. The magnetic seat is equipped with a gauge, which can be installed on flat or circular surfaces. Then the fixed contact can be used to measure the deformation that occurs during the testing process. The magnetic seat can only be used for low-temperature and standard temperature tests, and additional support needs to be considered for high-temperature tests.
All models use spring-loaded arms, which can disconnect freely to protect the gauge from damage when the limit displacement is exceeded. The upper arm generates a small spring force on the specimen, which is sufficient to allow the deflectometer to perform dynamic fatigue testing while being small enough not to interfere with the test.
The standard deflection gauge randomly provides a measuring arm that can measure downward deformation when in a vertical position, and can also be inverted up and down or in any direction. It can also be designed to load downwards according to the spring. The following itinerary is the total displacement.

Technical characteristics:
·Both meet the accuracy requirements of existing ASTM standard B-1 level and ISO9513 standard 0.5 level
·Adopting a sturdy double bending design greatly improves the performance of the extensometer
·Equipped with advanced foam liner box
·Equipped with an adjustable magnetic seat for easy installation
·Universal deflection sensors can meet various testing needs
·The automatic disconnection of the spring-loaded arm can prevent damage to the extensometer due to overtravel

Can be applied to tensile testing machines from brands such as Instron from Instron, Shimadzu from Japan, ZWCIK from Germany, Lloyd, MTS, etc.