美国DT 7500A1高精度微型

概述

The Dytran 7500A1 is a high precision single axis variable capacitance (VC) accelerometer available with a range of 2g. This high performance accelerometer combines an integrated VC accelerometer chip with high drive, low impedance buffer for low level acceleration measurements.

 压电式加速度传感器又称压电加速度计。它也属于惯性式传感器。压电式加速度传感器的原理是利用压电陶瓷或石英晶体的压电效应，在加速度计受振时，质量块加在压电元件上的力也随之变化。当被测振动频率远低于加速度计的固有频率时，则力的变化与被测加速度成正比。

Tailored for zero-to-medium frequency , the model 7500A1 features a low end frequency of 0 Hz (DC) and upper frequency range of 400 Hz. This module contains a MEMS capacitive sensing element, a custom integrated circuit amplifier, low noise electronics and differential output, housed in a lightweight titanium, with a 4-pin 1/4-28 radial connector and easy mounting via two #4 or M3 screws. Units are hermetically sealed for reliable operation in high humidity and dirty environments.

基于的MEMS硅微加工技术，压阻式加速度传感器具有体积小、低功耗等特点，易于集成在各种模拟和数字电路中，广泛应用于汽车碰撞实验、测试仪器、设备振动监测等领域。

特性

1. 1,000 mV/g sensitivity

2. 2g range

3. 0 to 400 Hz frequency range (3dB)

4. 4-pin 1/4-28 radial connector

5. Mounting via two #4 or M3 screws

6. 13 grams

7. Titanium

8. Hermetic

9. Ultra low noise

10. Differential output

11. isolated

12. Operates from +9 to +32 VDC

13. MEMS technology

14. DC 

电容式加速度传感器是基于电容原理的极距变化型的电容传感器。电容式加速度传感器/电容式加速度计是对比较通用的加速度传感器。在某些领域无可替代，如安全气，手机移动设备等。电容式加速度传感器/电容式加速度计采用了微机电系统（MEMS）工艺，在大量生产时变得经济，从而保证了较低的成本。