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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3303A1是一款微型三轴加速度传感器/振动传感器，压电式工作原理，专为状态和使用监控系统和主动振动控制系统而设计，自带4针接口和3/8-28螺纹。
The Dytran 3303A is a triaxial IEPE piezoelectric accelerometer designed for use in Health and Usage Monitoring Systems (HUMS) as well as Active Vibration Control (AVC) applications typically found on commercial and military aircraft. Offered with a sensitivity of 10 mV/g, units incorporate a 4-pin "Mighty Mouse"™ connector with 3/8-28 thread.
Design of the Dytran model 3303A features quartz sensing elements, operating in shear mode and packaged in a compact stainless steel housing. The distinguishing feature of these accelerometers is their Dytran developed integral mounting bracket design, which facilitates improved sensor performance while eliminating costs associated with separate mounting brackets. They also offer a reduced mass, as compared to conventional sensors and mounting brackets. The Dytran model 3303A is hermetically sealed for reliable operation within high humidity and dirty environments, as well as case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 10 to 1,000 Hz frequency range (±5%)
4. 4-pin "Mighty Mouse"™ radial connector
5. Ø.31 thru hole mount
6. 30 grams
7. Stainless steel
8. Hermetically sealed
9. Case isolated
10. Unique design eliminates need for separate mounting bracket
11. Triaxial
12. IEPE
应用
1. Active Vibration Control (AVC)
主动振动控制
2. Health and Usage Monitoring Systems (HUMS)
状态和使用监测系统
3. Transmission vibration monitoring
传动振动监测
Weight, Max 1.05 oz 30 grams
Size Length x Width x Height 1.05 x 1.42 x .56 Inches 26.70 x 36.1 x 14.20 mm 1) Accredited calibration certificate (ISO 17025)
Connector Type 4-Pin 4-Pin
Thread 3/8-28 UN-2A 3/8-28 UN-2A
Mounting Provision, Integral Bracket Ø .31 Thru Hole Inches Ø 7.92 Thru Hole mm
Material Housing 316 L 316 L
Sensitivity, ±5% [1] 10 mV/g 1 mV/m/s2
Range F.S for ± 5 Volts Output ± 500 g ± 4905 m/s2
Frequency Range [4] -15% / +5% 1 to 10 Hz 1 to 10 Hz
±5% 10 to 1000 Hz 10 to 1000 Hz
-5% / +15% 1000 to 3000 Hz 1000 to 3000 Hz
Resonant Frequency > 26 kHz > 26 kHz
Equivalent Electrical Noise Floor 0.007 Grms 0.069 m/s2 rms
Linearity [2] ± 1% F.S. ± 1% F.S.
Maximum Transverse sensitivity 5 % 5%
Strain Sensitivity @ 250µε 0.012 g/με 0.12 m/s2/µε
ENVIRONMENTAL
Maximum Vibration ± 600 Gpeak ± 5886 m/s2 peak
Maximum Shock ± 3000 Gpeak ± 29430 m/s2 peak
Temperature Range -60 to 250 °F -54 to 121 °C
Seal, Hermetic Welded/GTM Header Welded/GTM Header
ELECTRICAL
Supply Current Range [3] 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, Nom 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
配件
Supplied Accessories: (1) model 6555A adaptor bushing (Ø.25 thru hole), (1) model 6555A1 adaptor bushing(Ø.19 thru hole)
Compatible Cable: 6965A
订货型号
3303A 三轴航空加速度传感器
