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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3217AA是一款IEPE加速度传感器/振动传感器，可在低至零下196摄氏度下正常工作。
The Dytran 3334A1 is a miniature IEPE accelerometer with continuous operation down to -320°F (-196°C), offered with a 10 mV/g sensitivity, an overall height of just 0.33-inches (8.3-millimeters) and a total weight of 2 grams.
Sensors feature a lightweight titanium construction, a 5-40 stud mount and 5-44 radial connector. Units are hermetically sealed for reliable operation in high humidity and dirty environments.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1 to 10,000 Hz (±5%)
4. 5-44 radial connector
5. 5-40 stud mount
6. 2 grams
7. Titanium
8. Hermetic
9. -320°F (-196°C) operation
10. IEPE
应用
1. Environmental Stress Screening (ESS)
环境应力筛选
2. Modal and structural analysis of small objects in cryogenic applications
小物品低温应用的模态分析和架构分析
3. Product response testing in extreme environments
极端环境下的产品响应试验
1. General purpose vibration measurements in cryogenic applications
低温应用中的振动测量
参数
Weight 0.07 oz 2.0 grams Notes:
Connector Type 5-44 UNF-2A 5-44 UNF-2A
Material, Housing/Connector Titanium Titanium
Sensing Element Quartz Quartz
Sensitivity, ±10% [1] 10 mV/g 1 mV/m/s2
Frequency Range, ± 5% 1 to 10000 Hz 1 to 10000 Hz
Resonant Frequency > 45 kHz > 45 kHz
Equivalent Electrical Noise Floor 0.007 Grms/√(Hz) 0.07 m/s2 rms/√(Hz)
Linearity [2] ±1 % F.S. ±1 % F.S.
Maximum Transverse sensitivity 5 % 5%
Strain Sensitivity @ 250µε 0.002 g/με 0.02 m/s2/µε
Maximum Vibration 600 Gpeak 5886 m/s2 peak
Maximum Shock 3000 Gpeak 29430 m/s2 peak
Temperature Range -320 to +250 °F -196 to 121 °C
Coefficient of Thermal Sensitivity 0.04 %/°F 0.07 %/°C
Seal Hermetic Hermetic
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 +7.0 to +9.0 VDC +7.0 to +9.0 VDC
Discharge Time Constant 0.3 to 1.5 Sec 0.3 to 1.5 Sec
Electrical Isolation 10 GΩ,min 10 GΩ,min
订货型号
3334A1
配件
Recommended Accessories: model 4110C current source power unit, model 6265 magnetic mounting base, model 6268 isolated mounting base
Compatible Cables: 6014A, 6017A, 6021A, 6024A, 6025A, 6028A, 6029A, 6040A, 6056A, 6092A
