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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3403A是一款小型三轴加速度传感器/振动传感器，压电式工作原理，重4g，自带M4.5 x 0.35接头，集成石英剪切感应元件。
The Dytran 3403A is a miniature triaxial accelerometer that weighs just 4 grams and has a vertical height of 0.32 inches (8.0 millimeters).
The distinguishing characteristic of the model 3403A is its exclusive, Dytran designed 4-pin radial connector. Compared to the industry standard connector (1/4-28 thread size), the model 3403A incorporates a M4.5 x 0.35 connector that is approximately 20% smaller in size. This substantial size difference allows for a more flexible, lightweight cable, a smaller diameter for the connector, and also contributes to the overall small size of the accelerometer.
Available with a sensitivity of 10 mV/g, the Dytran model 3403A features quartz shear sensing elements packaged in a robust laser welded titanium housing with adhesive mounting capabilities. Units are hermetically sealed for reliable operation in high humidity and dirty environments and case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1.2 to 5,000 Hz frequency range (+15/-5%)
4. 4-pin M4.5 x 0.35 radial connector
5. Adhesive mount
6. 4 grams
7. Titanium
8. Hermetic
9. Case isolated
10. Miniature design
11. Triaxial
12. IEPE
应用
1. Modal and structural analysis
模态与结构分析
2. Noise, Vibration and Harshness (NVH)
噪音，振动和不平顺性
3. Squeak & Rattle
4. Vibration control
振动控制
5. General purpose triaxial vibration measurements
一般用途三轴振动测量
Weight, Max 0.14 oz 4.0 grams
Connector [1] 4-pin 4-pin
Material, Housing / Connector Titanium Titanium
Sensitivity, -10 + 15% [2] 10 mV/g 1.02 mV/m/s^2
Range F.S. (each axis) ±500 g ± 4905 m/s^2
Frequency Response, -5 /+15% 1.2 to 10000 Hz 1.2 to 10000 Hz
Element Natural Frequency 30 kHz 30 kHz
Equivalent Electrical Noise 0.007 grms 0.069 m/s^2 rms
Linearity [3] 1 %F.S. 1 %F.S.
Transverse Sensitivity Max 6%6%
Signal Polarity [6] [6]
ELECTRICAL
Supply Current Range [4] 2 to 20 mA 2 to 20 mA
Compliance Voltage Range +18 to +30 VDC +18 to +30 VDC
Output Impedance, Typ. 100 Ω 100 Ω
Output Bias Voltage 7.5 to 9.5 VDC 7.5 to 9.5 VDC
Discharge Time Constant 0.3 to 0.5 sec 0.3 to 0.5 sec
Ground Isolation [7] Case Isolated Case Isolated
ENVIRONMENTAL
Maximum Shock 5000 g pk 49050 m/s^2
Maximum Vibration 600 g pk 5880 m/s^2
Temperature Range -60 to +250 °F -51 to +121 °C
Environmental Seal Hermetic Hermetic
配件
Recommended Accessories: model 4114B1 current source power unit, model 6273 petro mounting wax
Compatible Cables: 6893A, 6895A, 6948A, 6949A, 6975A
订货型号
3403A
