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加速度传感器中有一种是三轴加速度传感器，同样的它是基于加速度的基本原理去实现工作的，加速度是个空间矢量，一方面，要准确了解物体的运动状态，必须测得其三个坐标轴上的分量；另一方面，在预先不知道物体运动方向的场合下，只有应用三轴加速度传感器来检测加速度信号。由于三轴加速度传感器也是基于重力原理的，因此用三轴加速度传感器可以实现双轴正负90度或双轴0-360度的倾角，通过校正后期精度要高于双轴加速度传感器大于测量角度为60度的情况。三轴加速度传感器的好处就是在预先不知道物体运动方向的场合下，只有应用三维加速度传感器来检测加速度信号。三维加速度传感器具有体积小和重量轻特点，可以测量空间加速度，能够全面准确反映物体的运动性质。
美国Dytran的3143D是一款三轴IEPE加速度传感器/振动传感器，压电式工作原理，重量14g，自带4针径向连接器和6-32铰轴安装设计，同时集成3个陶瓷剪切模式感应元件，再配备钛合金外壳，应对超高湿度和多尘工作环境。
The Dytran 3143D is a miniature IEPE triaxial accelerometer with a vertical dimension of 0.34 inches (8.7 millimeters) and an overall weight of 14 grams. Available with a sensitivity of 10 mV/g, the Dytran model 3143D features three ceramic shear mode sensing elements packaged in a lightweight titanium housing.
Units utilize an industry standard radial 4-pin connector and thru hole 6-32 mounting screw. This ring style configuration allows the sensor to be turned 360° prior to securing for ease of installation. The Dytran model 3143D is hermetically sealed for reliable operation in high humidity and dirty environments, as well as case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 0.5 to 3,000 Hz frequency range (±5%)
4. 4-pin 1/4-28 radial connector
5. Thru hole mount
6. 14 grams
7. Titanium
8. Hermetic
9. Case isolated
10. 360° cable orientation
11. Low profile
12. Triaxial
13. IEPE
应用
1. Modal and structural analysis
模态和结构分析
2. Whole body vibration measurements
全身振动测量
3. General purpose triaxial vibration measurements
一般目的三轴振动测量
Weight, Max. 0.49 oz 14 grams
Connector [1] Type 4-Pin 4-Pin
Material, Housing/Connector Titanium Titanium
Sensing Element Ceramic Ceramic
Element Style Planar Shear Planar Shear
Sensitivity, ±5% [2] 10 mV/g 1 mV/m/s2
Range for ± 5 Volts Output ±500 g peak ±4905 m/s2
Frequency Response, ±5% 0.5 to 3000 Hz 0.5 to 3000 Hz
Resonant Frequency > 25 kHz > 25 kHz
Broad Band Resolution 0.007 g rms 0.07 m/s2 rms
Linearity [3] ± 1 % F.S. ± 1 % F.S.
Maximum Transverse sensitivity 5 % 5 %
Strain Sensitivity @ 250µε 0.012 g/με 0.12 m/s2
/µε
ENVIRONMENTAL
Maximum Vibration ±600 g peak ±5886 m/s2 peak
Maximum Shock ±1500 g peak ±14715 m/s2 peak
Operating Temperature Range -60 to 185 °F -51 to 85 °C
Survival Temperature Range -100 to 225 °F -73 to 107 °C
Seal Hermetic Hermetic
ELECTRICAL
Supply Current Range [4] 2 to 20 mA 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 Constant 0.8 to 2.0 Sec 0.8 to 2.0 Sec
Electrical Isolation 10 GΩ,min 10 GΩ,min
配件
Supplied Accessories: (1) model 6247A2 mounting screw (6-32)
Recommended Accessories: model 4114B1 current source power unit, model 6216 adhesive mounting base
Compatible Cables: 6811A, 6812A, 6824A, 6828A, 6873A, 6925A, 6933A, 6967A, 6997A
订货型号
Model Sensitivity (mV/g) Frequency Response (Hz) Time Constant (Sec) Operating Temp (°F)
3143D
3143D1 100 mV/g 0.5 to 3000 0.8 to 2.0 -60 to 185
3143D2 50 mV/g 0.5 to 3000 0.8 to 2.0 -60 to 185
3143DT TEDS
