What factors affect the resonant frequency of the sensor

Cutoff frequency is the frequency at the required frequency response of the sensor can be measured within the amplitude error signal of the highest frequency . High cut-off frequency directly related to the size and the error value , a predetermined error range then the corresponding frequency is relatively high cut-off frequency . Frequency characteristics of piezoelectric sensor depends on the sensor mechanical resonance frequency of the first order , the actual use of the first-order resonant frequency of the sensor is often mounted resonant frequency. Resonance frequency by the internal sensor sensitive to the natural frequency of the core and the overall quality of Shaft Position Sensor and mounting the coupling rigidity integrated decision. Resonance frequency of the sensor will directly affect the level of the high frequency range , so in a stable resonance frequency sensitive core under the premise of improving the mounting coupling stiffness important condition to ensure high-frequency measurements . The sensor is installed in the form sensor manufacturers to provide high frequency cutoff frequencies are in a more ideal installation conditions obtained . The actual use of different forms of sensor installation and installation quality is good or bad will directly affect the installation coupling stiffness, thereby changing Positioning Sensor measurement frequency cutoff frequency. Different installation methods that correspond to different characteristics of the resonant frequency has been installed in many vibration measurement is described in the literature ; it is necessary that the different forms of the installation when combined together, the sensor response will be the lowest frequency of the frequency response of the installation form constraints . High frequency measurements of the installation screws are often used form . In order to achieve the desired results , the test object is necessary to achieve the required surface flatness and finish requirements and the sensor should be installed at the specified torque in order to raise as much as possible to ensure the sensor mounting rigidity coupled high-frequency cutoff frequency. Sensor cutoff frequency the higher the frequency of Coolant Temperature Sensor  installation requirements are higher , so the user using a high frequency measurement sensors sensor installation must be taken seriously . Sensor output connectors and cables form the impact of the measurement signal sensor signal output connectors are also potential important factors affecting high-frequency measurements . In practical applications the sensor connector and cable are also part of the sensor . Various forms of connectors, cable connector and the sensor is connected , and the weight of the cable and the cable fixed with respect to the form of the measured object will directly affect the sensor 's resonant frequency. The lighter weight of the sensor , connectors and cables for high frequency measurements of the more significant. So when the installation conditions permit small high-frequency measuring sensor connector form should be considered first conjoined cable , conjoined cable has fewer moving parts , light weight , more suitable for high frequency measurements.