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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3243A是一款小型、防潮式三轴加速度传感器/振动传感器，自带2m防溅式电缆线。
The Dytran 3243A is a low profile, moisture resistant triaxial IEPE accelerometer with an overall height of 0.30 inches (7.6 millimeters) and weighing just 2.5 grams.
Featuring titanium construction, a 10 mV/g sensitivity and adhesive mounting, the model 3243A incorporates a 2-meter integral cable with a splash-proof boot at the point of sensor and cable connection. The hermetically sealed cable-to-accelerometer boot seal makes it possible for the sensor to be temporarily submerged during testing. Units are case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1.5 to 10,000 Hz frequency range (±5%)
4. 2-meter integral cable
5. Adhesive mount
6. 2.5 grams
7. Titanium
8. Hermetic
9. Case isolated
10. Lightweight
11. Triaxial
12. Moisture resistant
13. IEPE
应用
General purpose triaxial vibration measurements in damp conditions
湿度条件下三轴振动测量
Weight, Less Cable, Max 0.09 oz 2.5 grams
Integral Cable [1] Cutoff Cutoff
Length 78 Inches 2 meters [1] Side Mounted
Mounting Provision Adhesive Mount Adhesive Mount
Material, Accelerometer Titanium Titanium
Sensing Material Quartz Quartz
Sensitivity, -10 / +15% [2] 10 mV/g 1 mV/m/s2
Range F.S for ± 5 Volts Output ±500 g ±4905 m/s2
Frequency Range, -5 / +15% 2 to 7000 Hz 2 to 7000 Hz
Resonant Frequency > 40 kHz > 40 kHz
Equivalent Electrical Noise Floor 0.007 Grms 0.069 m/s2 rms
Linearity [3] 1 % F.S. 1 % F.S.
Transverse Sensitivity, Max 5 % 5%
Strain Sensitivity @ 250µσ 0.039 G's/µσ 0.38 m/s2/µε
Maximum Vibration ±600 Gpeak ±5886 m/s2 peak
Maximum Shock ±5000 Gpeak ±49050 m/s2 peak
Temperature Range -60 to+250 °F -51 to +121 °C
Seal, Hermetic Welded/GTM Header Welded/GTM Header
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 +7 to +9 VDC +7 to +9 VDC
Discharge Time Constant 0.3 to 1.5 Sec 0.3 to 1.5 Sec
Electrical Isolation, Case Ground To Mounting Surface 10 GΩ,min 10 GΩ,min
订货型号
3243A
3243M2
配件
Recommended Accessories: model 4114B1 current source power unit
