加速度傳感器中有一種是三軸加速度傳感器，同樣的它是基于加速度的基本原理去實現工作的，加速度是個空間矢量，一方面，要準確了解物體的運動狀態，必須測得其三個坐標軸上的分量；另一方面，在預先不知道物體運動方向的場合下，只有應用三軸加速度傳感器來檢測加速度信號。由于三軸加速度傳感器也是基于重力原理的，因此用三軸加速度傳感器可以實現雙軸正負90度或雙軸0-360度的傾角，通過校正后期精度要高于雙軸加速度傳感器大于測量角度為60度的情況。三軸加速度傳感器的好處就是在預先不知道物體運動方向的場合下，只有應用三維加速度傳感器來檢測加速度信號。三維加速度傳感器具有體積小和重量輕特點，可以測量空間加速度，能夠全面準確反映物體的運動性質。
美國Dytran的3333A1是一款IEPE三軸加速度傳感器/振動傳感器，壓電式工作原理，頻響低至0.31Hz，自帶M4.5 x 0.35接口，信噪比非常優異。
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
應用
1. Modal and structural analysis
模態與結構分析
2. Noise, Vibration and Harshness (NVH)
噪音，振動和不平順性
3. Squeak & Rattle
4. Vibration control
振動控制
5. General purpose triaxial vibration measurement
一般用途三軸振動測量
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
訂貨型號
3333A1
3333A2
3333A3
相關型號
3333A1T TEDS
3333A2T TEDS
3333A3T TEDS
3333A4T TEDS
3333M5 TEDS
3333M1T
3333M2T
3333M3T
3333M4T
3333M5T
3333M6T
