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IEPE是指一种自带电量放大器或电压放大器的加速度传感器。IEPE是压电集成电路的缩写。因为由加速度传感器产生的电量是很小的，因此传感器产生的电信号很容易受到噪声干扰，需要用灵敏的电子器件对其进行放大和信号调理。IEPE中集成了灵敏的电子器件使其尽量靠近传感器以保证更好的抗噪声性并更容易封装。
美国Dytran的3079A是一款IEPE加速度传感器/振动传感器，用于状态与使用监控系统，灵敏度10mV/g，频响范围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. Ø.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
应用
1. High frequency aircraft/airframe vibration measurements
高频率飞机机身振动测量
2. Health and Usage Monitoring Systems (HUMS)
状态和使用监控系统
3. Rotor, Track and Balance (RTB)
转子，跟踪和平衡
4. Transmission vibration measurements
传动装置振动测量
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
订货型号
3079A
