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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3303A1是一款微型三軸加速度傳感器/振動傳感器，壓電式工作原理，專為狀態和使用監控系統和主動振動控制系統而設計，自帶4針接口和3/8-28螺紋。
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. ?.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
應用
1. Active Vibration Control (AVC)
主動振動控制
2. Health and Usage Monitoring Systems (HUMS)
狀態和使用監測系統
3. Transmission vibration monitoring
傳動振動監測
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 ? .31 Thru Hole Inches ? 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 ? 100 ?
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 G?,min 10 G?,min
配件
Supplied Accessories: (1) model 6555A adaptor bushing (?.25 thru hole), (1) model 6555A1 adaptor bushing(?.19 thru hole)
Compatible Cable: 6965A
訂貨型號
3303A 三軸航空加速度傳感器
相關型號
3333A1
3333A2
3333A3
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