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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3306A1是一款IEPE加速度傳感器/振動傳感器，可在低至196攝氏度環境下連續正常工作，滿足低溫振動試驗要求。
The Dytran 3306A1 is an IEPE accelerometer with continuous operation to -320°F (-196°C), expressly designed to support cryogenic vibration testing requirements.
Offered with a 5 mV/g sensitivity, the design of model 3306A1 incorporates a two-pole low pass filter, which aids in eliminating spurious high frequency data, and a rugged stainless steel construction, along with a 1/4-28 integral mounting stud and an axial mounted, military style 3-pin Bayonet connector. Even at extreme temperatures, the model 3306A1 displays an extremely stable and continuous signal output. Units are hermetically sealed for reliable operation in high humidity and dirty environments. The accelerometer is also electrically isolated via use of an internal Faraday shield for noise immunity.
特性
1. 5 mV/g sensitivity
2. 1,000g range
3. 4.8 to 1,800 Hz frequency range (±5%)
4. 3-pin military Bayonet-style axial connector
5. 1/4-28 stud mount
6. 37 grams
7. Stainless steel
8. Hermetic
9. Case isolated
10. -320°F (-196°C) operation
11. Two-pole low pass filter
12. Stable Mosfet amplifier technology
13. IEPE
應用
1. Cryogenic pump vibration measurements
低溫泵振動測量
2. Cryogenic industrial monitoring
低溫工業監測
3. Rocket engine vibration test stands
火箭發動機振動試驗臺
Weight 1.30 oz 37 grams
Size Hex X Height .750 X 1.4 Inches 19.05 X 35.56 mm
Connector [4] Type 3 Pin, MS3443H898PN 3 Pin, MS3443H898PN
Mounting Provision : Integral Stud 1/4 - 28 UNF-2A 1/4 - 28 UNF-2A
Element Material, Style Quartz, Shear Quartz, Shear
Sensitivity, ±5% [1] 5 mV/g 0.51 mV/m/s2
Range F.S for ± 5 Volts Output ±1000 g ± 9810 m/s2
Frequency Range ±3db 1.6 to 2500 Hz 1.6 to 2500 Hz
Filter Rolloff Rate 12 db/octave 12 db/octave
Filter Corner Frequency 2,500 Hz 2,500 Hz
Resonant Frequency >35 kHz >35 kHz
Noise floor 0.007 Grms 0.069 m/s2 rms
Spectral Noise 1Hz 0.002 Grms/sqr(Hz) 0.02 m/s2 rms/sqr(Hz)
10Hz 0.0007 Grms/sqr(Hz) 0.007 m/s2 rms/sqr(Hz)
100Hz 0.0003 Grms/sqr(Hz) 0.003 m/s2 rms/sqr(Hz)
Linearity [2] ± 1% % F.S. ± 1% % F.S.
Maximum Transverse sensitivity 5 % 5%
Strain Sensitivity 0.002 g/μσ 0.02 m/s2/µσ
ENVIRONMENTAL
Maximum Vibration ±1000 G's,peak ±9810 m/s2 peak
Maximum Shock ±2000 G's,peak ±19620 m/s2 peak
Temperature Range -320 to+300 °F -195 to +149 °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 ? 100 ?
Bias Voltage +7.5 to +9.5 VDC +7.5 to +9.5 VDC
Discharge Time Constant 0.1 to 1.0 Sec 0.1 to 1.0 Sec
訂貨型號
3306A1
相關低溫型號
3143M16
3045A
3334A1
3