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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3293A是一款微型三轴IEPE加速度传感器/振动传感器，压电式工作原理，灵敏度500mV/g，频响低至0.25Hz。
The Dytran 3293A is a lightweight IEPE triaxial accelerometer with a high sensitivity of 500 mV/g. Design of the model 3293A incorporates miniature ceramic shear mode sensing elements, mounted to a single support and packaged in a lightweight, welded titanium housing, for a total weight of 8.8 grams.
The model 3293A offers a low end frequency response of 0.25 Hz for excellent phase response at low frequencies. Units also have an electrical noise floor of 0.0002 g RMS, which allows for its excellent signal-to-noise ratio.
Units feature an industry standard 4-pin radial connector and 5-40 tapped hole for stud mounting, and are hermetically sealed for reliable operation in high humidity and dirty environments.
特性
1. 500 mV/g sensitivity
2. 7g range
3. 0.25 to 4,000 Hz frequency range (±10%)
4. 4-pin 1/4-28 radial connector
5. 5-40 tapped hole
6. 8.8 grams
7. Titanium
8. Hermetic
9. Lightweight
10. Low noise
11. Extended low frequency response
12. Triaxial
13. IEPE
应用
1. Modal and structural analysis
模态和结构分析
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
一般用于三轴振动测量
Weight 0.308 oz 8.8 grams
Connector [1] Type 4-pin, 1/4-28 4-pin, 1/4-28
Material Ti-6 AL-4V Ti-6 AL-4V
Housing Material Ti-6 AL-4V Ti-6 AL-4V
Sensitivity, ±10%
Acceleration Range, ± 7 Gpeak 68.67 m/s^2 peak
Frequency Range, ±10% 0.25 to 4000 Hz 0.25 to 4000 Hz
Resonance Frequency, Nom. >15 kHz >15 kHz
Linearity [3] 1 %F.S. 1 %F.S.
Transverse Sensitivity Max 6% 6 % -100 -20
Noise floor 0.0002 Grms 0.002 m/s^2 rms 0 -10
Spectral Noise 1Hz 30 µGrms/sqr(Hz) 294.3 µm/s^2 rms/sqr(Hz) 100 7.5
10Hz 7 µGrms/sqr(Hz) 68.67 µm/s^2 rms/sqr(Hz) 200 15
100Hz 9 µGrms/sqr(Hz) 88.29 µm/s^2 rms/sqr(Hz) 225 20
1000Hz 1 µGrms/sqr(Hz) 9.81 µm/s^2 rms/sqr(Hz) 250 25
10000Hz 1 µGrms/sqr(Hz) 9.81 µm/s^2 rms/sqr(Hz)
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 11 to 13 VDC 11 to 13 VDC
1.0 to 1.5 sec 1.0 to 1.5 sec
Shock Max 1000 Gpeak 9810 m/s^2
Vibration Max 50 Gpeak 491 m/s^2
Operating Temperature -60 to +185 °F -51 to +85 °C
Magnetic Sensitivity at 100 Gauss 0.00009 g/Gauss 0.0008829 m/s^2/Gauss
Base Strain Sensitivity, Max 0.002 g/µε 0.01962 m/s^2/µε
配件
Supplied Accessories: (1) model 6580 mounting stud (5-40 to 5-40)
Recommended Accessories: model 4114B1 current source power unit, model 6273 petro mounting wax
Compatible Cables: 6811A, 6812A, 6824A, 6828A, 6873A, 6925A, 6933A, 6967A, 6997A
订货型号
3293A
