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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3302A是一款两轴IEPE加速度传感器/振动传感器，专门状态与使用监控系统和主动振动控制而设计，， 10 mV/gd的灵敏度，同时具有微型通孔设计。
The Dytran 3302A is a biaxial 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 radial 3-pin "Mighty Mouse™" connector with a 5/16-28 thread.
Design of the Dytran model 3302A 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 3302A 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. 3-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. Biaxial
12. IEPE
应用
1. Active Vibration Control (AVC)
主动振动控制
2. Health and Usage Monitoring Systems (HUMS)
状态和使用振动监测系统
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 1.208 x .406 Inches 26.67 x 30.68 x 10.31 mm
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
订货型号
3302A
配件
(1) model 6555A adaptor bushing (Ø.25 thru hole)
(2) model 6555A1 adaptor bushing(Ø.19 thru hole)
Compatible Cables: 6891A
