IEPE是指一種自帶電量放大器或電壓放大器的加速度傳感器。IEPE是壓電集成電路的縮寫。因為由加速度傳感器產生的電量是很小的，因此傳感器產生的電信號很容易受到噪聲干擾，需要用靈敏的電子器件對其進行放大和信號調理。IEPE中集成了靈敏的電子器件使其盡量靠近傳感器以保證更好的抗噪聲性并更容易封裝。
美國Dytran的3211M1是一款IEPE加速度傳感器/振動傳感器，自帶10集成電纜線，可在水下175psi環境下正常工作。
The Dytran 3211M1 is a low profile IEPE accelerometer with a 10 mV/g sensitivity, weighing just 10 grams. The sensor features a factory molded urethane boot and a 10-foot integral urethane cable, for reliable operation in water depths to 175 psi.
Sensor design incorporates a ceramic shear sensing element for high natural frequency and integral low noise JFET electronics, encased within a rugged, lightweight titanium housing. The sensor is base isolated to avoid EMI/ground loop interference and mounts via #8 or M4 mounting screws.
Units are hermetically sealed for reliable operation in high humidity and dirty environments. A miniature thru hole design allows the sensor to be turned 360° prior to securing for ease of sensor installation.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1 to 10,000 Hz frequency range (±5%)
4. 10-foot integral cable
5. ?.17 thru hole mount for #8 or M4 screw
6. 10 grams
7. Titanium
8. Hermetic
9. Base isolated
10. Low profile
11. 360° cable orientation
12. Submersible to 175 psi
13. IEPE
應用
1. Underwater vibration measurements
水下振動測量
2. Vibration testing in submersible environments
潛水環境下振動試驗
Weight grams 9.6
Size Diameter inch 0.6
Height inch 0.42
Mounting Thru hole accommodates standard 8-32 or M4 bolt
Connector Type coaxial
Thread 10-32
Housing Material titanium alloy
Isolation case connected to signal ground and
isolated from mounting surface by
integral isolation washers
Sensing Element Material ceramic
Mode shear
PERFORMANCE
Sensitivity at 4mA mV/g 9.5 10 10.5
Measurement Range ±gpk 500
Frequency Range ±5% Hz 1 10000
PERFORMANCE SPECIFICATION
ACCELEROMETER, SINGLE AXIS
IEPE
Frequency Range, ±5% Hz 1 10000
Resonance Frequency kHz >31
Equivalent Noise 1Hz to 10kHz g rms 0.0005
Sensitivity vs Current 2mA to 10mA % 1
Transverse Sensitivity % 5
Polarity see outline drawing positive
ENVIRONMENTAL
Shock g pk 5000
Operating Temperature °F -67 250
Seal hermetic
Coefficient of Thermal Sensitivity %/°F 0.06
Magnetic Sensitivity at 100 Gauss g/Gauss 0.004
Thermal Shock Sensitivity g/°F 0.02
Base Strain Sensitivity g/µε 0.04
Stray Voltage Sensitivity 10V applied to equiv. g 0.004
mounting surface
ELECTRICAL
Supply Current mA 2 20
Compliance Voltage Vdc 18 30
Output Bias Room Temp Vdc 11 13.5
Operating Temp Vdc 8 16
Output Impedance ? 120
Discharge Time Constant sec 0.5
Warmup Time sec 2
訂貨型號
3211M1
配件
Recommended Accessories: model 4110C current source power unit
相關型號
3211A1 通用型
3211A2 通用型
