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

3010M14 01.jpg

關(guān)鍵詞：電源IC 壓電晶體

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