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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3148E是一款防潮型加速度传感器/振动传感器，灵敏度100mV/g，低频，低至0.5Hz。
The Dytran 3148E is a highly rugged IEPE accelerometer with a 100 mV/g sensitivity and low frequency vibration measurement capabilities down to 0.5 Hz.
Design of the model 3148E incorporates a ceramic shear sensing element packaged in a stainless steel housing, incorporating a radial BNC connector and 10-32 mounting hole. The model 3148E is also hermetically sealed for reliable operation in high humidity and dirty environments and base isolated to avoid EMI/ground loop interference.
特性
1. 100 mV/g sensitivity
2. 50g range
3. 0.5 to 5,000 Hz frequency range (±5%)
4. BNC radial connector
5. 10-32 tapped hole
6. 48 grams
7. Stainless steel
8. Hermetic
9. Base isolated
10. IEPE
应用
1. Industrial vibration monitoring
工业振动监测
2. Walkabout data collection
徒步旅行数据收集
3. General purpose vibration monitoring
一般用途振动监测
Weight, Max 1.7 oz 48 grams
Mounting Provision Tapped 10-32 Hole Tapped 10-32 Hole Notes:
Material, Housing/Connector 300 Series S.S. 300 Series S.S.
Sensitivity, ±2% [1] 100 mV/g 10 mV/m/s2
Range for ± 5 Volts Output ±50 g ±491 m/s2
Frequency Response, ± 5% 0.5 to 5000 Hz 0.5 to 5000 Hz
Resonant Frequency > 26 kHz > 26 kHz
Broad Band Resolution 0.0007 Grms 0.007 m/s2 rms
Linearity [2] ±2 % F.S. ±2 % F.S.
Maximum Transverse Sensitivity 5 % 5 %
Strain Sensitivity @ 250με 0.001 g/με 0.01 m/s2/με
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
Supply Current Range 2 to 20 mA
Compliance Voltage Range +18 to +30 Volts +18 to +30 Volts
Output Impedence, Max 150 Ω 150 Ω
Bias Voltage +11 to +13 VDC +11 to +13 VDC
Discharge Time Constant 0.9 to 2.0 Sec 0.9 to 2.0 Sec
Electrical Isolation 10 GΩ,min 10 GΩ,min
订货型号
3148E
配件
1. Model 6200S mounting stud (10-32 to 10-32), (1) model 6292 thermal boot
2. Model 4110C current source power unit, model 6190 magnetic mounting base
3. 电缆：6020A
