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3333A1是一款IEPE三轴加速度传感器/振动传感器，压电式工作原理，频响低至0.31Hz，自带M4.5 x 0.35接口，信噪比非常优异。
The Dytran 3333A1 is a miniature IEPE triaxial accelerometer with a low end frequency response of 0.31 Hz, for excellent phase response at low frequencies. Units weigh just 2.3 grams, have a vertical height of 0.32 inches (8.1 millimeters), and offer excellent signal-to-noise ratio.
The distinguishing characteristic of the model 3333A1 is its exclusive, Dytran designed 4-pin radial connector. Compared to the industry standard connector (1/4-28 thread size), the model 3333A1 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 10 mV/g sensitivity, the Dytran model 3333A1 features ceramic shear sensing elements coupled with ultra low noise JFET electronics, packaged in a robust laser welded titanium housing. Units are hermetically sealed for reliable operation in high humidity and dirty environments.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 0.31 to 10,000 Hz frequency range (+15/-10%)
4. 4-pin M4.5 x 0.35 radial connector
5. Adhesive mount
6. 2.3 grams
7. Titanium
8. Hermetic
9. Miniature design
10. Extended low frequency response
11. Low noise JFET electronics
12. Triaxial
13. 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 measurement
一般用途三轴振动测量
Weight 0.08 oz 2.3 grams
Connector [1] Type 4-pin 4-pin
Material Ti-6 AL-4V Ti-6 AL-4V
Coaxial, M4.5 X 0.35 Connector. Mates with Dytran cable Model 6893AXX
Housing Material Ti-6 AL-4V Ti-6 AL-4V
Sensitivity, +15-10% [2] 10 mV/g 1.02 mV/m/s2
Acceleration Range, +/-500 Gpeak +/- 4905 m/s2 peak
Frequency Range, +15/-10% .31-10,000 Hz .31-10,000 Hz
Resonance Frequency >24 kHz >24 kHz
Linearity [3] 1 %F.S. 1 %F.S.
Transverse Sensitivity Max 6% 6 %
Noise floor 0.004 Grms 0.039 m/s2rms
Spectral Noise 1Hz 419 µGrms/sqr(Hz) 4110 µm/s2 rms/sqr(Hz)
10Hz 73 µGrms/sqr(Hz) 716 µm/s2 rms/sqr(Hz)
100Hz 45 µGrms/sqr(Hz) 441 µm/s2 rms/sqr(Hz)
100Hz 45 µGrms/sqr(Hz) 441 µm/s rms/sqr(Hz)
1000Hz 21 µGrms/sqr(Hz) 206 µm/s2 rms/sqr(Hz)
10000Hz 11 µGrms/sqr(Hz) 108 µm/s2 rms/sqr(Hz)
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 ? 100 ?
Output Bias Voltage 11 to 13 VDC 11 to 13 VDC
0.5 - 1.5 sec 0.5 - 1.5 sec
Shock Max 5000 g pk 49050 m/s2
Vibration Max 3000 g pk 29430 m/s2
Operating Temperature -60 to +250 °F -51 to +121 °C
Seal Hermetic Hermetic
Magnetic Sensitivity at 100 Gauss 0.00007 g/Gauss 0.00069 m/s2/Gauss
Base Strain Sensitivity 0.02 g/µε 0.20 m/s2/µε
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
3333A1
3333A2
3333A3
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