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(xiě)。因?yàn)橛杉铀俣葌鞲衅鳟a(chǎn)生的電量是很小的，因此傳感器產(chǎn)生的電信號(hào)很容易受到噪聲干擾，需要用靈敏的電子器件對(duì)其進(jìn)行放大和信號(hào)調(diào)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(guó)Dytran的3191A是一款I(lǐng)EPE加速度傳感器/振動(dòng)傳感器，內(nèi)建靜電屏蔽，防噪防靜電，頻響低至0.08Hz，自帶電量放大器。
The Dytran 3191A is an IEPE piezoelectric accelerometer with built-in Faraday shield for electrostatic noise immunity, excellent low frequency response of 0.08 Hz and the capability to resolve vibrations as low as 0.000001 g's RMS.
Available with a sensitivity of 5 V/g, design of the model 3191A incorporates an annular shear ceramic sensing element, packaged in a highly rugged stainless steel housing with a 2-pin MIL-C-5015 axial connector and 1/4-28 mounting hole. The model 3191A was designed to be directly compatible with the Dytran model 6194 Immersion Proof sealing boot (sold separately). When used together, the sensor remains fully functional in an IP65 environment. The sensors are hermetically sealed for reliable operation in high humidity and dirty environments and case isolated to avoid EMI/ground loop interference.
特性
1. 5,000 mV/g sensitivity
2. 1g range
3. 0.08 to 1,000 Hz frequency range (±5%)
4. 2-pin axial connector
5. 1/4-28 tapped hole
6. 775 grams
7. Stainless steel
8. Hermetic
9. Case isolated
10. Internal Faraday shield
11. Available with water and oil resistant environmental boot
12. IEPE
應(yīng)用
1. Bridge monitoring
橋梁監(jiān)測(cè)
2. Low frequency vibration measurements
低頻振動(dòng)測(cè)量
3. Modal analysis of large structures
大物體模態(tài)分析
4. Seismic monitoring
抗震監(jiān)測(cè)
Weight, Max 27 oz 775 grams
Connector Type 2 -PIN, MIL-C-5015-10SL-4P 2 -PIN, MIL-C-5015-10SL-4P
Material, Housing/Connector 300 SERIES 300 SERIES
Sensing Element CERAMIC CERAMIC
Sensitivity, ±5% [1] 5 V/G 1 V/m/s2
Range for ± 5 Volts Output 1 G peak 10 m/s2
Frequency Response, ±5% 0.08 to 1000 Hz 0.08 to 1000 Hz
Resonant Frequency > 8 kHz > 8 kHz
Broad Bａnd Resolution 0.000012 G rms 0.00012 m/s2 rms
Linearity [2] ± 2 % F.S. ± 2 % F.S.
Maximum Transverse sensitivity 5 % 6 %
Strain Sensitivity @ 250με 0.001 G/με 0.01 m/s2/με
Coefficient of Thermal Sensitivity 0.07 %/°F 0.14 %/°C
ENVIRONMENTAL
Maximum Vibration 50 G peak 491 m/s2 peak
Maximum Shock 100 G peak 981 m/s2 peak
Operating Temperature Range -60 to +225 °F -51 to 107 °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 4 to 7 Sec 4 to 7 Sec
Electrical Isolation 10 GΩ,min 10 GΩ,min
訂貨型號(hào)
3191A 工業(yè)型
3191A1 工業(yè)型
配件
1. Model 6176 mounting stud (1/4-28 to 1/4-28)
2. Model 4110C current source power unit, model 6187 magnetic mounting base, model 6190 magnetic mounting base, model 6194 protective boot
3. 電纜：6038A, 6080A, 6082A, 6406A, 6407A, 6459A
相關(guān)型號(hào)
3184E
3192A
