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压电式加速度传感器，又称振动传感器，是基于压电晶体的压电效应工作的。某些晶体在一定方向上受力变形时，其内部会产生极化现象，同时在它的两个表面上产生符号相反的电荷；当外力去除后，又重新恢复到不带电状态，这种现象称为“压电效应”，具有“压电效应”的晶体称为压电晶体。常用的压电晶体有石英、压电陶瓷等，在现代生产生活中被应用于许许多多的方面，如手提电脑的硬盘抗摔保护，目前用的数码相机和摄像机里，也有加速度传感器，用来检测拍摄时候的手部的振动，并根据这些振动，自动调节相机的聚焦。压电加速度传感器还应用于汽车安全气囊、防抱死系统、牵引控制系统等安全性能方面。
美国Dytran的3092C是一款高温型加速度传感器/振动传感器，不锈钢结构，高密封，最大工作温度高达485摄氏度，在严苛的工作环境下仍性能可靠。
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
应用
1. Automotive engine/exhaust analysis
汽车发动机/排放分析
2. Turbine vibration monitoring
涡轮机振动监测
3. General purpose high temperature vibration monitoring
高温振动监测
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
订货型号
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. 电缆：6894A, 6946A, 6979A
