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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3255A1是一款IEPE加速度传感器/振动传感器，灵敏度10 mV/g，自带10-32接口和10-32螺纹，性能可靠，即使在潮湿和多尘环境下。
The Dytran 3255A1 is a cost effective, single axis IEPE accelerometer. Available with a sensitivity of 10 mV/g, the model 3255A1 features wide bandwidth and incorporates a ceramic shear sensing element packaged in a durable titanium housing, with a 10-32 radial connector and 10-32 stud mounting capabilities. Units incorporate low noise JFET electronics and are hermetically sealed for reliable performance in high humidity and dirty environments.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1 to 10,000 Hz frequency range (±5%)
4. 10-32 radial connector
5. 10-32 tapped hole
6. 10 grams
7. Titanium
8. Hermetically sealed
9. Low noise JFET electronics
10. IEPE
应用
1. Modal analysis
模态分析
2. Vibration control
振动控制
3. General purpose vibration monitoring
一般用途振动监测
Weight 0.35 oz 10.0 grams
Sensitivity, ± 5% [1] 10 mV/g 1 mV/m/s2
Range for ± 5 Volts Output 500 g 4905 m/s2
Frequency Response, ± 5% 1 to 10000 Hz 1 to 10000 Hz
Resonant Frequency > 36 kHz > 36 kHz
Broad Band Resolution 0.0040 Grms 0.039 m/s2 rms
Linearity [2] ± 1 % F.S. ± 1 % F.S.
Maximum Transverse sensitivity 5 % 5 %
Strain Sensitivity @ 250με 0.001 g/με 0.01 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 Impedence,Typ 100 Ω 100 Ω
Bias Voltage +11 to +13 VDC +11 to +13 VDC
Discharge Time Constant 0.5 to 1.5 Sec 0.5 to 1.5 Sec
订货型号
型号 | 灵敏度(mV/g) | 量程（g） | 最大冲击力（g） | 工作温度(°F) |
3255A1 | 10 | ± 500 | 3000 | -60 - +250 |
3255A2 | 100 | ± 50 | 3000 | -60 - +250 |
3255A3 | 500 | ± 10 | 1000 | -60 - +225 |
3255A4 | 50 | ± 100 | 2000 | -60 - +250 |
3255A5 | 20 | ± 250 | 2000 | -60 - +250 |
3255A6 | 200 | ± 25 | 2000 | -60 - +225 |
配件
1. Model 6200 mounting stud (10-32 to 10-32)
2. Model 4110C current source power unit, model 6213 adhesive mounting base, model 6220 isolated mounting stud, model 6258 magnetic mounting base
3. 电缆线：6010A, 6011A, 6012A 6016A, 6018A, 6022A, 6026A, 6032A, 6033A, 6049A, 6050A, 6051A, 6053A, 6054A, 6066A, 6069A, 6093A, 6099A, 6400A, 6401A, 6412A, 6429A, 6924A, 6930A, 6991A
