1005939-1

1005939-1 Datasheet

MiniSense 100 Vibration Sensor

Part	Datasheet
1005939-1	1005939-1 (pdf)

Related Parts	Information
1006015-1	1006015-1
1005940-1	1005940-1

PDF Datasheet Preview
MiniSense 100 Vibration Sensor High Sensitivity Good Frequency Response Excellent Linearity Shielded Construction Analog Output Withstands High Shock The Minisense 100 is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. The pins are designed for easy installation and are solderable. Horizontal and vertical mounting options are offered as well as a reduced height version. 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 . Dimensions in millimeters • Washing Machine Load Imbalance • Vehicle Motion Sensor • Anti-Theft Devices • Vital Signs Monitoring • Tamper Detection • Impact Sensing • High Voltage Sensitivity 1 V/g • Over 5 V/g at Resonance • Horizontal or Vertical Mounting • Shielded Construction • Solderable Pins, PCB Mounting • Low Cost • < 1% Linearity • Up to 40 Hz 2,400 rpm Operation Below Resonance 1 of 4 05/12/2009 MiniSense 100 Vibration Sensor performance specifications Typical properties/specifications Typical Properties at 25 °C Parameter Voltage Sensitivity open-circuit, baseline Charge Sensitivity baseline Resonance Frequency Voltage Sensitivity open-circuit, at resonance Upper Limiting Frequency +3 dB Linearity Capacitance Dissipation Factor Inertial Mass Value 260 75 6 42 +/-1 244 Units V/g pC/g Hz V/g Hz % pF none gram Environmental Specifications Storage Temperature Operating Temperature Weight -40 to +80 deg C -20 to +60 deg C Minisense 100H Minisense 100V gram 2 of 4 05/12/2009 MiniSense 100 Vibration Sensor functional description 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 quoted above. The sensitivity at resonance is significantly higher. Impacts containing high-frequency components will excite the resonance frequency, as shown in the plot above response of the MiniSense 100 to a single half-sine impulse at 100 Hz, of amplitude g . The ability of the sensor to detect low frequency motion is strongly influenced by the external electrical circuit, as described below see “Electrical Description” . electrical description The MiniSense 100 behaves electrically as an “active” capacitor it may be modelled as a perfect voltage source voltage proportional to applied acceleration in series with the quoted device capacitance. Any external input or load resistance will form a high-pass filter, with a roll-off frequency as tabulated above, or calculated from the formula f c = The impedance of the sensor is approximately 650 M ohm at 1 Hz. The active sensor element is electrically shielded, although care should be taken in the PCB design to keep unshielded traces as short as possible. Lower Limiting Frequency -3 dB roll-off External R LLF Hz ordering information Description Horizontal Mounting Vertical Mounting Horizontal Mounting Reduced Height Model No. LDTC-H LDTC-V LDTC-RH Part No. 1005939-1 1005940-1 1006015-1 North America Measurement Specialties, Inc. 1000 Lucas Way Hampton, VA 23666 Sales and Customer Service Tel +1-800-745-8008 or +1-757-766-1500 Fax +1-757-766-4297 Technical Support Email: Europe Asia MEAS Deutschland GmbH Hauert 13 44227 Dortmund Germany Sales and Customer Service Tel +49 0 231 9740 21 Technical Support Tel +49 0 6074 862822 Email: Measurement Specialties China , Ltd. No. 26 Langshan Road Shenzhen High-Tech Park North Nanshan District Shenzhen, China 518107 Sales and Customer Service Tel +86 755 3330 5088 Technical Support Email: 4 of 4 05/12/2009

PDF Datasheet Preview

MiniSense 100 Vibration Sensor

High Sensitivity Good Frequency Response Excellent Linearity Shielded Construction Analog Output Withstands High Shock

The Minisense 100 is a low-cost
cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. The pins are designed for easy installation and are solderable. Horizontal and vertical mounting options are offered as well as a reduced height version. 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 .

Dimensions in millimeters
• Washing Machine Load Imbalance
• Vehicle Motion Sensor
• Anti-Theft Devices
• Vital Signs Monitoring
• Tamper Detection
• Impact Sensing
• High Voltage Sensitivity 1 V/g
• Over 5 V/g at Resonance
• Horizontal or Vertical Mounting
• Shielded Construction
• Solderable Pins, PCB Mounting
• Low Cost
• < 1% Linearity
• Up to 40 Hz 2,400 rpm Operation

Below Resonance
1 of 4
05/12/2009

MiniSense 100 Vibration Sensor
performance specifications

Typical properties/specifications

Typical Properties at 25 °C

Parameter Voltage Sensitivity open-circuit, baseline Charge Sensitivity baseline Resonance Frequency

Voltage Sensitivity open-circuit, at resonance

Upper Limiting Frequency +3 dB Linearity Capacitance Dissipation Factor Inertial Mass

Value 260 75 6
42 +/-1 244

Units V/g pC/g Hz V/g

Hz % pF none gram

Environmental Specifications

Storage Temperature Operating Temperature

Weight
-40 to +80 deg C
-20 to +60 deg C

Minisense 100H Minisense 100V
gram
2 of 4
05/12/2009

MiniSense 100 Vibration Sensor
functional description

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 quoted above. The sensitivity at resonance is significantly higher. Impacts containing high-frequency components will excite the resonance frequency, as shown in the plot above response of the MiniSense 100 to a single half-sine impulse at 100 Hz, of amplitude g . The ability of the sensor to detect low frequency motion is strongly influenced by the external electrical circuit, as described below see “Electrical Description” .
electrical description

The MiniSense 100 behaves electrically as an “active” capacitor it may be modelled as a
perfect voltage source voltage proportional to applied acceleration in series with the quoted device capacitance. Any external input or load resistance will form a high-pass filter, with a roll-off frequency as tabulated above, or calculated from the formula f c = The impedance of the sensor is approximately 650 M ohm at 1 Hz. The active sensor element is electrically shielded, although care should be taken in the PCB design to keep unshielded traces as short as possible.

Lower Limiting Frequency -3 dB roll-off

External R

LLF Hz
ordering information

Description Horizontal Mounting Vertical Mounting Horizontal Mounting Reduced Height

Model No. LDTC-H LDTC-V LDTC-RH

Part No. 1005939-1 1005940-1 1006015-1

North America

Measurement Specialties, Inc. 1000 Lucas Way Hampton, VA 23666 Sales and Customer Service Tel +1-800-745-8008 or +1-757-766-1500 Fax +1-757-766-4297 Technical Support Email:

Europe

Asia

MEAS Deutschland GmbH Hauert 13 44227 Dortmund Germany Sales and Customer Service Tel +49 0 231 9740 21 Technical Support Tel +49 0 6074 862822 Email:

Measurement Specialties China , Ltd. No. 26 Langshan Road Shenzhen High-Tech Park North Nanshan District Shenzhen, China 518107 Sales and Customer Service Tel +86 755 3330 5088 Technical Support Email:
4 of 4
05/12/2009

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Datasheet ID: 1005939-1 647597