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3310A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，灵敏度1.2pC/g，工作温度高达260℃。
The Dytran 3310A is a low profile piezoelectric charge mode accelerometer with a sensitivity of 1.2 pC/g designed to reliably operate in temperatures up to +500°F (+260°C).
The ultra miniature teardrop design of the model 3310A features a lightweight titanium housing weighing just 1.8 grams. Units incorporate a unique single crystal sensing element, ensuring greater temperature stability over a wider range. Units offer base isolation and hermetic sealing for reliable operation in high humidity environments, with adhesive mounting capabilities. The sensor also features a specially designed Dytran 3-56 coaxial connector, which mates with a supplied replacement cable, terminating to a 10-32 jack.
特性
1. 1.2 pC/g sensitivity
2. 7,000 Hz upper frequency range (±5%)
3. Removable 3-foot cable assembly
4. Adhesive mount
5. 1.8 grams
6. Titanium
7. Hermetic
8. Base isolated
9. Ultra miniature teardrop design
10. +500°F (+260°C) operation
11. Charge mode
应用
1. Environmental Stress Screeing (ESS)
环境应力筛选
2. Mechanical shock testing
机械冲击试验
3. PC board vibration measurement
印刷电路板振动测量
4. Product response testing
产品反应试验
5. General purpose high temperature vibration measurements where space is at a premium
通用高温振动测量
Weight 0.063 oz 1.8 grams
Connector [2] 3-56 UNF-2A 3-56 UNF-2A [3] Measured at 100 Hz, 1 G RMS per ISA RP37.2.
Case Material Titanium Titanium
Sensing Element Type LiNbO3 LiNbO3
Sensitivity [3] [4] 1.0 - 1.3 pC/g 0.10 ‐ 0 .13 pC / m/s2
Range F.S +/-3000 g/με +/-29,430 m/s2
Frequency Response, +/- 3dB [5] to 20,000 Hz [5] to 15,000 Hz
Frequency Response, +/- 10% [5] to 10,000 Hz [5] to 10,000 Hz
Frequency Response, +/- 5% [5] to 7,000 Hz [5] to 5,000 Hz
Mounted Resonant Frequency >45 kHz >45 kHz
Amplitude Non-Linearity 1 %F.S MAX 1 %F.S MAX
Transverse Sensitivity, Max 5 % 5 %
Strain Sensitivity @250/μσ 0.00012 g/με 0.0012 m/s2/με
ENVIRONMENTAL
Maximum Vibration 4000 g rms 39200 m/s2 rms
Maximum Shock 5000 g 49000 m/s2
Temperature Range -60 to +500 °F -51 to +260 °C
Environmental Seal Hermetic Hermetic
ELECTRICAL
Output Signal Polarity Positive Positive
Isolation [6] [6]
订货型号
3310A
配件
1. Model 6927 installation removal wrench, (1) model 6003A03 cable assembly
2. Model 4110C current source power unit, 4705M series in-line charge amplifier (10-32 jack to BNC jack), 4751B series in-line charge amplifier (10-32 jack to 10-32 jack)
3. 电缆线：6013A, 6019A
相关型号
3224C
3225E
