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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3077A是一款IEPE加速度传感器/振动传感器，适用于高频振动监测，灵敏度10mV/g，频率响应1.1-5000Hz。
The Dytran 3077A is an IEPE piezoelectric accelerometer, designed expressly for Rotor, Track and Balance (RTB) and other high frequency aircraft vibration monitoring applications.
Offered with a sensitivity of 10 mV/g, frequency response of 1.1 to 5,000 Hz, and a 3-foot integral cable, the distinguishing feature of model 3077A 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. Dytran's model 3077A 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 3-foot cable
4. Ø.31 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. Health and Usage Monitoring Systems (HUMS)
状态和使用监控系统
2. Rotor, Track and Balance (RTB)
转子，跟踪和平衡
3. Transmission vibration measurements
传动装置振动测量
Weight, Less Cable, Max 0.39 oz 11 grams
Sensitivity, ± 5% [2] 10 mV/g 1 mV/m/s2
Range F.S for ± 5 Volts
Output ±500 g ±4905 m/s2
Frequency Range, ± 10% 1.1 to 5000 Hz 1.1 to 5000 Hz
Resonant Frequency > 26 kHz > 26 kHz
Equivalent Electrical Noise Floor 0.007 Grms 0.07 m/s2 rms
Transverse Sensitivity, Max 5 % 5 %
Linearity [3] ± 1% % F.S. ± 1% % F.S.
Strain Sensitivity @ 250µσ 0.012 G's/µσ 0.012 G's/µσ
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
Coefficient of Thermal Sensitivity 0.03 %/°F 0.05 %/°C
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 2.0 Sec 0.3 to 2.0 Sec
订货型号
3077A
配件
(1) Model 6555A adaptor bushing (Ø.25 thru hole),
(2) Model 6555A1 adaptor bushing (Ø.19 thru hole)
