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3274A1 微型加速度傳感器
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壓電式加速度傳感器,又稱振動傳感器,是基于壓電晶體的壓電效應(yīng)工作的

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更新時間:2024-06-26
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壓電式加速度傳感器,又稱振動傳感器,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,其內(nèi)部會產(chǎn)生極化現(xiàn)象,同時在它的兩個表面上產(chǎn)生符號相反的電荷;當(dāng)外力去除后,又重新恢復(fù)到不帶電狀態(tài),這種現(xiàn)象稱為“壓電效應(yīng)",具有“壓電效應(yīng)"的晶體稱為壓電晶體。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,如手提電腦的硬盤抗摔保護,目前用的數(shù)碼相機和攝像機里,也有加速度傳感器,用來檢測拍攝時候的手部的振動,并根據(jù)這些振動,自動調(diào)節(jié)相機的聚焦。壓電加速度傳感器還應(yīng)用于汽車安全氣囊、防抱死系統(tǒng)、牽引控制系統(tǒng)等安全性能方面。

 

美國Dytran的3274A1是一款超小型IEPE加速度傳感器/振動傳感器,IEEE1451.2是智能傳感器接口模塊標(biāo)準。它提供了將傳感器和變送器連接到網(wǎng)絡(luò)的接口標(biāo)準,主要用于實現(xiàn)傳感器的網(wǎng)絡(luò)化。IEEE1451.2標(biāo)準采用通用的A/D或D/A轉(zhuǎn)換裝置作為傳感器的I/O接口,將各種傳感器模擬量轉(zhuǎn)換成標(biāo)準規(guī)定格式的數(shù)據(jù),連同一個小存儲器—傳感器電子數(shù)據(jù)表TEDS(Transducer Electronic Data Sheet),與標(biāo)準規(guī)定的處理器目標(biāo)模型—網(wǎng)絡(luò)適配器NCAP(Network Capable Application Process)連接。如此,數(shù)據(jù)可以按網(wǎng)絡(luò)規(guī)定的協(xié)議接入網(wǎng)絡(luò)。該標(biāo)準結(jié)構(gòu)模型提供了一個連接智能變送器的接口模型STIM(Smart Transducer Interface Module)NCAP的10線標(biāo)準接口—變送獨立接口TII(Transducer Independence Interface)。

The Dytran 3274A1 is an ultra miniature high frequency IEPE accelerometer with IEEE 1451.4 TEDS capabilities.

 

Units have an overall height of just 0.24-inches (6.1-millimeters), weigh just 2 grams, and are ideal for the measurement of shock and vibration of very small, lightweight objects such as printed circuit boards and board mounted components.

 

Offered with a sensitivity of 5 mV/g, the model 3274A1 features a quartz shear sensing element, packaged in a lightweight, teardrop titanium housing. Designed for adhesive mount, the Dytran model 3274A1 has an upper frequency response of 10,000 Hz. Due to their low mass and high crystal stiffness, units have a resonant frequency of >40 kHz, allowing them to be used to measure high frequency vibration with very little error.

 

The model 3274A1 utilizes a specially designed 3-56 coaxial connector, mating with a 3-foot (0.9-meter) replaceable coaxial cable and terminating to a 10-32 jack. Units are hermetically sealed for reliable operation in high humidity environments, as well as case isolated to avoid EMI/ground loop interference.


特性

1.   5 mV/g sensitivity

2.   1,000g range

to 10,000 Hz (±10%)

3.   3-foot (0.9-meter) removable cable

4.   Adhesive mount

1     grams

5.   Titanium

6.   Hermetic

7.   Case isolated

8.   Ultra miniature teardrop design

9.   IEEE 1451.4 TEDS capabilities

10.  IEPE

 

應(yīng)用

2     Environmental Stress Screening (ESS)

  環(huán)境應(yīng)力篩選

3     Modal analysis

  模態(tài)分析

4     Product response testing

  產(chǎn)品響應(yīng)試驗

5     High frequency vibration applications

  高頻振動應(yīng)用


Weight, Max (Less Cable) 0.07 oz 2 grams [

Connector Radially Mounted 3-56 3-56

Cable Length 36 Inches 914 mm

Case Material Titanium Titanium

Sensitivity, ± 10% [3] 5 mV/g 0.51 mV/m/s2

Range F.S For ± 5 Volts Out ± 1000 g's ± 9810 m/s2

Frequency Response, +/- 10% 1.1 to 10000 Hz 1.1 to 10000 Hz

Mounted Resonant Frequency > 40 kHz > 40 kHz

Amplitude Non-Linearity [4] 2 %F.S 2 %F.S

Transverse Sensitivity, Max 5 % 5 %

y, Noise Resolution 0.014 grms 0.14 m/s2 rms

Strain Sensitivity @250/με 0.04 g/με 0.39 m/s2/με

ENVIRONMENTAL

Maximum Vibration 2000 Grms 19600 m/s2 rms

Maximum Shock 5000 Gpeak 49000 m/s2 peak

Temperature Range -60 to +250 °F -51 to +121 °C

Environmental Seal Hermetic Hermetic

ELECTRICAL

Supply Current/Compliance Voltage Range [5] 2 to 20/+18 to +30 mA/Volts 2 to 20/+18 to +30 mA/Volts

Output Impedance, TYP 100 Ω 100 Ω

Bias Voltage +7 to + 9 VDC +7 to + 9 VDC

Discharge Time Constant 0.3 to 0.8 Sec 0.3 to 0.8 Sec

Teds Feature IEEE 14514 IEEE 14514

Case Isolation 10 GΩ 10 GΩ


訂貨型號

3274A1  超小型

3274A2  超小型

3274A3  超小型

 

配件

1.   Model 6003A03 cable assembly (3-56 to 10-32), (1) model 6298 petro mounting wax, (1) model 6591A installation/removal wrench

2.   Model 4110C current source power unit, model 6273 petro mounting wax

3.   電纜:6011A


相關(guān)型號

3030B4

3220E

3305A1


3274A1 01.png

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