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；當外力去除后，又重新恢復到不帶電狀態(tài)，這種現(xiàn)象稱為“壓電效應”，具有“壓電效應”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3152C2是一款高溫型加速度傳感器/振動傳感器，具有體積小，結(jié)構(gòu)堅固，高密封，耐高溫等特點，工作溫度高達500°F。
The Dytran 3152C2 is a high temperature piezoelectric charge mode accelerometer, featuring an axial mounted 10-32 electrical connector and 10-32 tapped mounting hole. With a 0.5 inch (12.7 millimeter) hex size, the accelerometer is small enough to mount in a multitude of space constrained environments. Model 3152C2 has a sensitivity of 4 pC/g, robust stainless steel housing and features a rugged hermetically sealed construction for use in demanding environments.
特性
1. 4 pC/g sensitivity
2. 5,000 Hz upper frequency range (±10%)
3. 10-32 axial connector
4. 10-32 tapped hole
5. 14 grams
6. Stainless steel
7. Hermetic
8. +500°F (+260°C) operation
9. Small size
10. Charge mode
應用
1. Environmental Stress Screening (ESS)
環(huán)境應力篩選
2. Vibration control
振動控制
3. General purpose high temperature vibration monitoring
高溫振動檢測而
SPECIFICATION VALUE UNITS
RANGE, F.S. { 1 } 1000 G
SENSITIVITY, +20%/-10% -4.0 pC/G
FREQUENCY RESPONSE, +/- 10% { 2 } 2 to 5000 Hz
MOUNTED RESONANT FREQUENCY 25 kHz
AMPLITUDE LINEARITY +/- 2 % FS
TRANSVERSE SENSITIVITY, MAX. 5 %
CAPACITANCE, NOM. 550 pF
OPERATING TEMPERATURE RANGE -65 to +500 °F
COEFFICIENT OF THERMAL SENSITIVITY .04 %/°F
MAXIMUM SHOCK 3000 G's, PK
MAXIMUM VIBRATION ±700 G
OUTPUT SIGNAL POLARITY (FOR ACCELERATION TOWARDS TOP)
NEGATIVE
SIZE, HEX X HEIGHT 0.50 X 0.93 IN.
WEIGHT 14 GRAMS
CONNECTOR, TOP MOUNTED 10-32 COAXIAL
ELECTRICAL GROUNDING CASE IS GROUND RETURN
MOUNTING PROVISION 0.15 DEEP TAPPED HOLE IN BASE 10-32
CASE MATERIAL STAINLESS STEEL, NON-MAGNETIC 300 SERIES
ENVIRONMENTAL SEAL HERMETIC (WELDED, GLASS-TO-METAL)
訂貨型號
3152C
配件
1. Model 6200 mounting stud (10-32 to 10-32)
2. Model 4110C current source power unit, 4705A series in-line charge amplifier (BNC jack to BNC jack), 4751B series in-line charge amplifier (10-32 jack to 10-32 jack), model 6196 magnetic mounting base (10-32), model 6213 adhesive mounting base (10-32)
3. 電纜：6002A, 6013A, 6019A, 6036A, 6037A, 6049A, 6057A, 6097A, 6411A, 6417A, 6419A, 6924A, 6991A
相關(guān)型號
3220C1
3310A
