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IEPE是指一種自帶電量放大器或電壓放大器的加速度傳感器。IEPE是壓電集成電路的縮寫。因為由加速度傳感器產生的電量是很小的，因此傳感器產生的電信號很容易受到噪聲干擾，需要用靈敏的電子器件對其進行放大和信號調理。IEPE中集成了靈敏的電子器件使其盡量靠近傳感器以保證更好的抗噪聲性并更容易封裝。
美國Dytran的3079A是一款IEPE加速度傳感器/振動傳感器，用于狀態與使用監控系統，靈敏度10mV/g，頻響范圍1.1-5000HZ。
Expressly designed for use in Health and Usage Monitoring Systems (HUMS), the Dytran 3079A is an IEPE piezoelectric accelerometer, featuring a sensitivity of 10 mV/g with a frequency response of 1.1 to 5,000 Hz, packaged in a highly rugged stainless steel housing weighing 11 grams.
The distinguishing feature of model 3079A is the Dytran developed integral mounting bracket design, facilitating improved sensor performance while eliminating costs associated with separate mounting brackets. The miniature accelerometer is mounted within the bracket at the point where the cable and bracket are joined. This unique design also offers reduced mass, as compared to conventional sensors and mounting brackets. Model 3079A 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
1.1 to 5,000 Hz frequency range (±10%)
3. Integral 14-foot cable
4. ?.26 thru hole mount
5. 11 grams
6. Stainless steel
7. Hermetically sealed
8. Case isolated
9. Multiple sense directions available
10. Unique design eliminates need for separate mounting bracket
11. IEPE
應用
1. High frequency aircraft/airframe vibration measurements
高頻率飛機機身振動測量
2. Health and Usage Monitoring Systems (HUMS)
狀態和使用監控系統
3. Rotor, Track and Balance (RTB)
轉子，跟蹤和平衡
4. Transmission vibration measurements
傳動裝置振動測量
PHYSICAL
Weight (Less Cable), Max 0.4 oz 11 grams
Sensitivity, ±5% [1] 10 mV/g 1.02 mV/m/s2
Range for ± 5 Volts Output 500 g 4905 m/s2
Frequency Response, ± 10% 1.1 to 5000 Hz 1.1 to 5000 Hz
Resonant Frequency >26 kHz >26 kHz
Broad Bａnd Resolution 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 -51 to +121 °C
Seal Hermetic Hermetic
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 Impedance, Max 100 Ω 100 Ω
Bias Voltage 7 to 9 VDC 7 to 9 VDC
Discharge Time Constant 0.3 to 0.8 Sec 0.3 to 0.8 Sec
訂貨型號
3079A
相關型號
3077A
3078A
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