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壓電式加速度傳感器，又稱(chēng)振動(dòng)傳感器，是基于壓電晶體的壓電效應(yīng)工作的。某些晶體在一定方向上受力變形時(shí)，其內(nèi)部會(huì)產(chǎn)生極化現(xiàn)象，同時(shí)在它的兩個(gè)表面上產(chǎn)生符號(hào)相反的電荷；當(dāng)外力去除后，又重新恢復(fù)到不帶電狀態(tài)，這種現(xiàn)象稱(chēng)為“壓電效應(yīng)"，具有“壓電效應(yīng)"的晶體稱(chēng)為壓電晶體。常用的壓電晶體有石英、壓電陶瓷等，在現(xiàn)代生產(chǎn)生活中被應(yīng)用于許許多多的方面，如手提電腦的硬盤(pán)抗摔保護(hù)，目前用的數(shù)碼相機(jī)和攝像機(jī)里，也有加速度傳感器，用來(lái)檢測(cè)拍攝時(shí)候的手部的振動(dòng)，并根據(jù)這些振動(dòng)，自動(dòng)調(diào)節(jié)相機(jī)的聚焦。壓電加速度傳感器還應(yīng)用于汽車(chē)安全氣囊、防抱死系統(tǒng)、牽引控制系統(tǒng)等安全性能方面。
美國(guó)Dytran的3010M14是一款微型加速度傳感器/振動(dòng)傳感器，專(zhuān)為傳輸標(biāo)準(zhǔn)振動(dòng)標(biāo)定數(shù)據(jù)，對(duì)其他加速度傳感器進(jìn)行標(biāo)定，例如3120B和3123A型。
The Dytran 3010M14 is a primary transfer standard accelerometer, and is designed to transfer standard vibration calibration data from standards organization such as NIST, to back-to-back calibration accelerometers such as Dytran models 3120B and 3123A, which are then used to calibrate other accelerometers.
Back-to-back (reference) accelerometers offer a convenient means of determining the sensitivty and frequency response characteristics of unknown acceleration, velocity and displacement sensors. A vibration laboratory already equipped with an electrodynamic shaker and control system can easily incorporate use of the model 3010M14 to accomplish in-house NIST traceable calibrations, Model 3010M14 is available with a 10 mV/g sensitivity, 10-32 tapped hole for mounting, and 10-32 axial connector.
特性
1. 10 mV/g
2. 500g range
3. 1 to 5,000 Hz frequency range (±5%)
4. 10-32 axial connector
5. 10-32 tapped hole
6. 21 grams
7. Stainless steel
8. Hermetic
9. Calibration reference accelerometer
10. IEPE
應(yīng)用
1. Back-to-back accelerometer calibration
連續(xù)加速度校準(zhǔn)
2. Low frequency, low g level measurements
低頻，低g值水平測(cè)量
3. NIST traceable calibrations (when used with appropriate electrodynamic shaker, power supply and control system)
可追蹤式校準(zhǔn)
Weight, Max 0.735 oz 21.0 grams
Mounting Internal Thread 10-32 UNF-2B 10-32 UNF-2B Notes:
Connector [1] Type 10-32 10-32
Material 304L SS 304L SS
Housing Material 304L SS 304L SS
PERFORMANCE 0 -1.5
Sensitivity, ±2% [2] 10 mV/g 1.02 mV/m/s2 100 0
Acceleration Range ± 500 Gpeak ± 981 m/s2 peak 200 2
Frequency Range, ±5% 1 - 5000 Hz 1 - 5000 Hz 250 2.5
Frequency Range, ±3db .66 to 10000 Hz .66 to 10000 Hz
Resonance Frequency > 30 kHz > 30 kHz
Linearity ±2 %F.S. ±2 %F.S.
Transverse Sensitivity Max 5 % 5 %
Transverse Sensitivity, Max 5% 5%
Spectral Noise 10Hz 0.0008 µGrms/√(Hz) 0.008 µm/s2 rms/√(Hz)
20Hz 0.0002 µGrms/√(Hz) 0.002 µm/s2 rms/√(Hz)
100Hz 0.00006 µGrms/√(Hz) 0.00059 µm/s2 rms/√(Hz)
1000Hz 0.00003 µGrms/√(Hz) 0.00029 µm/s2 rms/√(Hz)
10000HZ 0.00002 µGrms/√(Hz) 0.0002 µm/s2 rms/√(Hz)
Broad Bａnd Resolution, Max 0.004 Grms 0.03924 m/s2 rms
Base Strain Sensitivity, Max 0.004 g/µε 0.04 m/s2 /µε
ELECTRICAL
Supply Current Range [3] 2 to 20 mA 2 to 20 mA
Compliance Voltage Range +18 to +30 VDC +18 to +30 VDC
Output Impedance 100 ? 100 ?
Bias Voltage +7.5 to +9.5 VDC +7.5 to +9.5 VDC
Discharge Time Constant 0.5 to 1.0 sec 0.5 to 1.0 sec
ENVIRONMENTAL
Shock Max 3000 G pk 29430 m/s2
Vibration Max 1000 G's 9810 m/s2
Operating Temperature -60 to +250 °F -51 to +121 °C
Seal Hermetic Hermetic
訂貨型號(hào)
3010M14
配件
Supplied Accessories: (1) model 6200 mounting stud (10-32 to 10-32)
相關(guān)型號(hào)
3045A
3306A1
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