壓電式加速度傳感器，又稱振動(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(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3092C是一款高溫型加速度傳感器/振動(dòng)傳感器，不銹鋼結(jié)構(gòu)，高密封，工作溫度高達(dá)485攝氏度，在嚴(yán)苛的工作環(huán)境下仍性能可靠。
The Dytran 3092C is a piezoelectric charge mode accelerometer capable of operating at temperatures up to +900°F (+482°C). For reliable performance under harsh conditions, units are hermetically sealed and housed in a stainless steel construction.
Featuring a compact, robust design as an accompaniment to its ultra high temperature operation, model 3092C is offered with a sensitivity of 3.5 pC/g, 10-32 stud mounting capabilities and a 10-32 radial connector.
特性
1. 3.5 pC/g sensitivity
2. 5,000 Hz upper frequency range (±10%)
3. 10-32 radial connector
4. 10-32 tapped hole
5. 42 grams
6. Stainless steel
7. Hermetic
8. +900°F (+482°C) operation
9. Small size
10. Charge mode
應(yīng)用
1. Automotive engine/exhaust analysis
汽車發(fā)動(dòng)機(jī)/排放分析
2. Turbine vibration monitoring
渦輪機(jī)振動(dòng)監(jiān)測(cè)
3. General purpose high temperature vibration monitoring
高溫振動(dòng)監(jiān)測(cè)
Weight grams 42
Sensitivity pC/g 3.5
Frequency Range, ±10% Hz see note 2 5000
Resonance Frequency kHz >40
Transverse Sensitivity % 5
Capacitance pF 80
Non-linearity % 1
Insulation Resistance (Room Temp.) GΩ 300
Insulation Resistance (1000°F) MΩ 1
Insulation Resistance (1200°F) kΩ 75
ENVIRONMENTAL
Shock/Vibration g pk 5000/3000
Operating Temperature °F -60 see note 1
MODEL 3092C
HIGH TEMPERATURE, CHARGE MODE ACCELEROMETER
REV B ECN 10172 PS3092C ENGLISH VERSION
Seal hermetic
Coefficient of Thermal Sensitivity %/°F 0.01
Magnetic Sensitivity g/G 0.08
Base Strain Sensitivity g/με 0.06
訂貨型號(hào)
3092C
配件
1. Model 6200S mounting stud (10-32 to 10-32)
2. Model 4752B in-line charge amplifier (10-32 jack to 10-32 jack), model 4753B in-line charge amplifier (10-32 jack to BNC jack)
3. 電纜：6894A, 6946A, 6979A
相關(guān)型號(hào)
3196C
3316C
