PIEZO SENSOR - MINISENSE 100

PIEZO SENSOR - MINISENSE 100

Description
The MiniSense 100 is a low cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at
low frequencies. Pins are designed for easy installation and are solderable. Horizontal and vertical mounting
options are offered. The active sensor area is shielded for improved RFI/EMI rejection. Rugged, flexible PVDF
sensing element withstands high shock overload. Sensor has excellent linearity and dynamic range, and may be
used for detecting either continuous vibration or impacts. The mass may be modified to obtain alternative
frequency response and sensitivity selection (consult factory). 
 
The MiniSense 100 acts as a cantilever-beam accelerometer. When the beam is mounted horizontally, acceleration
in the vertical plane creates bending in the beam, due to the inertia of the mass at the tip of the beam. Strain in
the beam creates a piezoelectric response, which may be detected as a charge or voltage output across the electrodes
of the sensor. The sensor may be used to detect either continuous or impulsive vibration or impacts. For excitation
frequencies below the resonant frequency of the sensor, the device produces a linear output governed by the "baseline"
sensitivity. The sensitivity at resonance is significantly higher. Impacts containing high frequency components will excite
the resonance fre-quency, as shown in the plot above (response of MiniSense 100 to a single half-sine impulse at 100 Hz,
of amplitude 0.9 g). The ability of the sensor to detect low frequency motion is strongly influenced by the external electrical
circuit.
 
Applications: 
Detect either continuous or impulsive vibration or impacts
 
Features:
Low cost
Cantilever-type vibration sensor
High sensitivity at low frequencies
Active sensor area is shielded for improved RFI/EMI rejection
Excellent linearity and dynamic range
Rugged, flexible PVDF sensing element withstands high shock overload