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3316C是一款高温型加速度传感器/振动传感器，具有体积小、结构坚固，高密封、耐高温等特点，重6g，工作温度高达482℃。
The Dytran 3316C is an ultra high temperature piezoelectric charge mode accelerometer, designed to reliably operate in temperatures up to +900°F (+482°C).
Featuring a unique single crystal charge mode sensing element mounted in a hermetically sealed, miniature Inconel™ housing, units utilize the latest in planar shear technology. In order to operate at such high temperatures, model 3316C was designed with a unique, Dytran patented feature. Units employ a "silver window" on the top cover of the accelerometer housing, which provides oxygen access to the crystal at high temperatures while maintaining the unit's hermetic sealing.
The Dytran model 3316C weighs just 6 grams and has a height of just 0.36 inches (9.1 millimeters), making it ideal for use in locations inaccessible to other types of accelerometers. Offered with a sensitivity between 1 and 2 pC/g and a 10,000 Hz upper frequency response, the model 3316C has a 5-40 tapped hole and 10-32 radial connector (exact sensitivity is provided on the calibration certificate supplied with each sensor).
特性
1. 1 to 2 pC/g sensitivity
2. 10,000 Hz upper frequency range (±10%)
3. 10-32 radial connector
4. 5-40 tapped hole
5. 6 grams
6. Inconel™
7. Hermetic
8. Miniature cubic design
9. High frequency response
10. +900°F (+482°C) operation
11. Charge mode
应用
1. Automotive vibration studies
汽车振动研究
2. Exhaust system analysis
排气系统分析
3. Engine vibration analysis
发动机振动分析
4. Environmental Stress Screening (ESS)
环境应力筛选
Weight, Max 0.21 oz 6.0 grams
Size Square x Height .40 x .36 Inches 10.16 x 9.10 mm
Frequency Range, ±10% [4] to 10000 Hz [4] to 10000 Hz 10
Resonant Frequency > 45 kHz > 45 kHz
Capacitance 120 pF 120 pF
Linearity [2] ± 1% % F.S. ± 1% % F.S.
Phase Response (±5°) [4] to 3000 Hz [4] to 3000 Hz
Maximum Transverse Sensitivity 5 % 5 %
Strain Sensitivity, Max 0.003 g/με 0.03 m/s2/με
Insulation resistance, (Connector pin to case) at 75 °F > 5 MΩ at 75 °F > 5 MΩ
at 900 F > 0.25 MΩ at 900 °F > 0.25 MΩ
Coefficient of Thermal Sensitivity 0.02 %F 0.02 %F
Ground Isolation Case Ground Case Ground
ENVIRONMENTAL
Maximum Vibration ±6000 G, peak ±5886 m/s2, peak
Maximum Shock ±10000 G, peak ±49050 m/s2, peak
Temperature Range -60 to+900 °F -51 to+482 °C
订货型号
3316C
3316C1
3316C2
3316M1
3316M2
3316M3
3316M5
配件
1. Model 6584 mounting stud (5-40 to 10-32)
2. Model 6763 hi-temp isolated tri-mount base, model 6759 hi-temp triaxial mounting block, model 6762 hi-temp triaxial mounting block, 6998 isolated mounting base
3. 电缆线：6946A, 6979A, 6999A
相关型号
3220C1
3225E
