DM-JS micro strain accelerometer Introduction: DM-JS miniature strain type accelerometer is suitable for low-frequency vibration test. Huygens bridge design is adopted, temperature compensation bridge is set and sealed, and silicon oil is filled inside as damping device. It has high output sensitivity, good low-frequency response, high output sensitivity, good linearity, repeatability and stability, good waterproof, light deadweight and small size, and can be directly connected with the dynamic strain test and analysis system. Sensor principle and structure: The accelerometer is composed of detection mass (also called sensitive mass), support, inductor, spring, damper and shell. The detection mass can only move along one axis due to the constraints of the support. When the instrument housing accelerates along the sensitive axis with the carrier, according to Newton's law, the detection mass with a certain inertia tries to keep its original motion state unchanged. The relative motion between it and the shell will deform the spring, so the detection mass will accelerate under the action of the spring force. When the spring force is balanced with the inertial force generated when the test mass accelerates, there will be no relative movement between the test mass and the shell. At this time, the deformation of the spring reflects the magnitude of the measured acceleration. As a sensing element, the inductor converts the acceleration signal into an electrical signal for output. Accelerometer is essentially an oscillatory system with one degree of freedom. Dampers must be used to improve the dynamic quality of the system. Technical parameters: Range: ± 2g, ± 5g, ± 10g Sensitivity: 1.0 ± 0.1 mv/V Comprehensive accuracy: 0.5% FS Frequency response range: 0.2~30Hz Operating temperature range: - 20~70 ℃ Sealing grade: IP65 Accessible instruments: DM-YB series strain acquisition instrument, DMFS wireless module
Introduction: DM-JS miniature strain type accelerometer is suitable for low-frequency vibration test. Huygens bridge design is adopted, temperature compensation bridge is set and sealed, and silicon oil is filled inside as damping device. It has high output sensitivity, good low-frequency response, high output sensitivity, good linearity, repeatability and stability, good waterproof, light deadweight and small size, and can be directly connected with the dynamic strain test and analysis system. Sensor principle and structure: The accelerometer is composed of detection mass (also called sensitive mass), support, inductor, spring, damper and shell. The detection mass can only move along one axis due to the constraints of the support. When the instrument housing accelerates along the sensitive axis with the carrier, according to Newton's law, the detection mass with a certain inertia tries to keep its original motion state unchanged. The relative motion between it and the shell will deform the spring, so the detection mass will accelerate under the action of the spring force. When the spring force is balanced with the inertial force generated when the test mass accelerates, there will be no relative movement between the test mass and the shell. At this time, the deformation of the spring reflects the magnitude of the measured acceleration. As a sensing element, the inductor converts the acceleration signal into an electrical signal for output. Accelerometer is essentially an oscillatory system with one degree of freedom. Dampers must be used to improve the dynamic quality of the system.
