概述
The Dytran model 3145A is a miniature, low mass IEPE accelerometer weighing just 2.3 grams.
Available with a 100 mV/g sensitivity, the accelerometer incorporates a ceramic shear sensing element in a robust stainless steel housing, with a 5-40 mounting stud and axial 5-44 connector. Units are hermetically sealed for reliable operation in high humidity and dirty environments.
加速度传感器是一种能够测量加速力的电子设备。加速力就是当物体在加速过程中作用在物体上的力,就好比地球引力,也就是重力。加速力可以是个常量,比如g,也可以是变量。加速度计有两种:一种是角加速度计,是由陀螺仪(角速度传感器)的改进的。另一种就是线加速度计。
特性
1. 100 mV/g sensitivity
2. 50g range
3. 0.8 to 10,000 Hz (±5%)
4. 5-44 axial connector
5. 5-40 stud mount
6. 2.3 grams
7. Stainless steel
8. Hermetic
9. Miniature design
10. IEPE
压电式加速度传感器又称压电加速度计。它也属于惯性式传感器。压电式加速度传感器的原理是利用压电陶瓷或石英晶体的压电效应,在加速度计受振时,质量块加在压电元件上的力也随之变化。当被测振动频率远低于加速度计的固有频率时,则力的变化与被测加速度成正比。
参数
Weight 0.08 oz 2.3 grams Notes:
Connector 5-44 Coaxial 5-44 Coaxial [
Sensitivity, ±10%
Range for ± 5 Volts Output 50 g 491 m/s2
Frequency Resp*e, ± 10% 0.8 to 10,000 Hz 0.8 to 10,000 Hz
Resonant Frequency > 45 kHz > 45 kHz
Equivalent Electrical Noise Floor 0.007 Grms 0.07 m/s2 rms
Linearity,±1 % F.S.
Maximum Transverse Sensitivity 5 % 5 %
Strain Sensitivity @ 250με 0.002 g/με 0.02 m/s2/με
ENVIRONMENTAL
Maximum Vibration 600 Gpeak 5886 m/s2 peak
Maximum Shock 3000 Gpeak 29430 m/s2 peak
Temperature Range -60 to +185 °F -51 to 85 °C
Supply Current Range 2 to 20 mA
Compliance Voltage Range +18 to +30 Volts +18 to +30 Volts
Output Impedence,Typ 100 Ω 100 Ω
Bias Voltage +11 to +13 VDC +11 to +13 VDC
Discharge Time C*tant 0.5 to 2.0 Sec 0.5 to 2.0 Sec
基于的MEMS硅微加工技术,压阻式加速度传感器具有体积小、低功耗等特点,易于集成在各种模拟和数字电路中,广泛应用于汽车碰撞实验、测试仪器、设备振动监测等领域。