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| 型号： | 0-1002794-0 |
| 厂商： | Measurement Specialties Inc/Schaevitz |
| 文件页数： | 2/4页 |
| 文件大小： | 0K |
| 描述： | SENSOR PIEZO FILM VIBRA TABS |
| 产品目录绘图： | 1002794-0 Positive Side 1002794-0 Negative Side 1002794-0 Stretch Direction 1002794-0 Connector |
| 标准包装： | 100 |
| 传感器类型： | 加速 |
| 传感范围： | 0Hz ~ 180Hz |
| 灵敏度： | 50mV/g |
| 输出类型： | 模拟 |
| 工作温度： | 0°C ~ 85°C |
| 特点： | 28µm 压电薄膜元件上覆盖了 0.005 英寸（125µ m）聚酯层 |
| 封装/外壳： | 悬臂压电薄膜（晶片） |
| 安装类型： | 通孔 |
| 端子： | PC 引脚 |
| 产品目录页面： | 2827 (CN2011-ZH PDF) |
| 配用： | MSP1010-ND - SENSOR PIEZO FILM DESIGN KIT |
| 其它名称： | 0-1002794-1 1002794-0 LDTO-028K MSP1006 |
LDT with Crimps Vibration Sensor/Switch
examples of properties
Four different experiments serve to illustrate the various properties of this simple but versatile component.
Experiment #1
LDT0 as Vibration Sensor - with
the crimped contacts pushed through a
printed-circuit board, the LDT0 was
soldered carefully in place to anchor the
sensor. A charge amplifier was used to
detect the output signal as vibration from
a shaker table was applied (using a
charge amplifier allows a very long
measurement time constant and thus
allows the "open-circuit" voltage
response to be calculated). Small
masses (approximately 0.26g
increments) were then added to the tip of
the sensor, and the measurement
repeated. Results are shown in Table 1
and the overlaid plots in Fig. 1. Without
adding mass, the LDT0 shows a
resonance around 180 Hz. Adding mass
to the tip reduces the resonance
frequency and increases "baseline"
sensitivity.
TABLE 1: LDT0 as Vibration Sensor (see Fig 1)
Added Mass
0
1
2
3
Baseline
Sensitivity
50 mV/g
200 mV/g
400 mV/g
800 mV/g
Sensitivity at
Resonance
1.4 V/g
4 V/g
8 V/g
16 V/g
Resonant
Frequency
180 Hz
90 Hz
60 Hz
40 Hz
+3 Db
Frequency
90 Hz
45 Hz
30 Hz
20 Hz
Experiment #2
LDT0 as Flexible Switch - using a charge
amplifier to obtain "open-circuit" voltage sensitivity,
the output was measured for controlled tip
deflections applied to the sensor (supported by its
crimped contacts as described above). 2 mm
deflection was sufficient to generate about 7 V.
Voltages above 70V could be generated by
bending the tip of the sensor through 90 ° (see
Table 2, Fig. 2).
LDT0-028K Piezo Vibration Rev 1
www.meas-spec.com
2 of 4
10/13/2008
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