7705A1 低频加速度传感器                       7705A1 低频 振动传感器 

 7705A1加速度计                                    7705A1 加速度传感器 

深圳市汉斯福特科技有限公司

杨工

座机：0755-26552352

手机：13352927502

传真：0755-23343535

Q  Q: 1138493826

公司地址：龙华新区大浪街道大浪社区伟达工业园A栋2楼

公司网址：

概述

Dytran’s new generation of sensors combines two technologies (piezoelectric and DC response MEMS), which until now have never been packaged simultaneously in a single housing.

The Dytran 7705A1  Extended Low Frequency (ELF™) accelerometer combines both a piezoelectric and a variable capacitance MEMS element, combined as a single output, to create the widest frequency response bandwidth in the industry, from DC (0 Hz) to 10 kHz. Unique ELF™ technology combines the most desirable features of piezoelectric sensors (excellent high frequency response) with those of variable capacitance accelerometers (true DC response), eliminating the need for using two different technologies to cover the bandwidth of interest in an application. Slow rotation speeds in the sub-1Hz range and gear mesh frequencies up to 10 kHz can now be made using the same sensor. The Dytran model 7705A1 ELF™ accelerometers are ideal for flight testing, ride quality, Health & Usage Monitoring Systems (HUMS), wind turbine measurements, machinery monitoring, and the widest range of structural response applications.

加速度传感器是一种能够测量加速力的电子设备。加速力就是当物体在加速过程中作用在物体上的力，就好比地球引力，也就是重力。加速力可以是个常量，比如g，也可以是变量。加速度计有两种：一种是角加速度计，是由陀螺仪（角速度传感器）的改进的。另一种就是线加速度计。

ELF™ accelerometer model 7705A1 is offered with a 200g range and operates on 5-28 VDC power at 7-9 mA of current. Signal/power is handled via a 4-pin M4.5 x 0.35 radial connector. The lightweight titanium housing weighs just 15 grams, and is hermetically sealed for use in rugged environments, from test tracks to outer space. The ELF™ incorporates a 10-32 tapped mounting hole and a hex bas

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。

特性

1.   10 mV/g sensitivity

2.   200g range

3.   0 to 10,000 Hz frequency range (±10%)

4.   4-pin M4.5 x 0.35 radial connector

5.   10-32 tapped hole

6.   15 grams

7.   Titanium

8.   Hermetic

9.   Hybrid design

10.  Dual mode technology: incorporates AC and DC into one sensor

应用

1.   Flight testing

2.   Health & Usage Monitoring Systems (HUMS)

3.   Machinery monitoring

4.   Ride quality

5.   Wind turbine measurements

6.   Wide range of structural response applications

参数

Weight, Max.  0.53 oz

Mounting 10-32 Tapped Hole 10-32 Tapped Hole

Connector Type 4-pin, M4.5X0.35 4-pin, M4.5X0.35

Housing Material Titanium

Sensitivity, ±10% [1] 10 mV/g 1.0 mV/m/s2

Acceleration Range ±200 Gpeak ±1962 m/s2

Frequency Response, ±10% 0 to 10,000 Hz 0 to 10,000 Hz

Resonance Frequency >38 kHz >38 kHz

Linearity [2] 1 % F.S. 1 % F.S.

Transverse Sensitivity <3 % <3 %

Output Noise, Broadband, Max. 0.008 Grms 0.0785 m/s2

Phase shift mismatch, Max. +/-2 degrees +/-2 degrees

Absolute phase shift, Max [3] +/-5 degrees +/-5 degrees

Base Strain 0.0004 g/µɛ 0.0039 m/s2

/µɛ

伺服式加速度传感器是一种闭环测试系统，具有动态性 能好、动态范围大和线性度好等特点。其工作原理，传感器的振动系统由 "m-k”系统组成，与一般加速度计相同，但质量m上还接着一个电磁线圈，当基座上有 加速度输入时，质量块偏离平衡位置，该位移大小由位移传感器检测出来，经伺服放大器 放大后转换为电流输出，该电流流过电磁线圈，在永久磁铁的磁场中产生电磁恢复力，力图使质量块保持在仪表壳体中原来的平衡位置上，所以伺服加速度传感器在闭环状态下工作。由于有反馈作用，增强了抗干扰的能力，提高测量精度，扩大了测量范围，伺服加速度 测量技术广泛地应用于惯性导航和惯性制导系统中，在高精度的振动测量和标定中也有应用。

Bias Offset Max 0.2 g's 1.96 m/s2

ENVIRONMENTAL

Maximum Mechanical Shock 5,000 Gpeak 49,050 m/s2

Bias Temperature Shift, Max 56 (ppm of span)/°F 101 (ppm of span)/°C

1.5 % of span 1.5 % of span

 -60 to +250 °F -51 to 121 °C

Thermal Coefficient 0.06 %/°F 0.12 %/°C

Seal Hermetic Hermetic

POWER

Compliance Voltage +5 to +28 VDC +5 to +28 VDC

Current Range 5 to 10 mA DC 5 to 10 mA DC

Output Bias Voltage, Typical 2.45 VDC 2.45 VDC

Output Impedance, Nom. 1 Ω 1 Ω

Power Supply Rejection Ratio >65 dB >65 dB

地震检波器是用于地质勘探和工程测量的专用传感器，是一种将地面振动转变为电信号的传感器，能把地震波引起的地面震动转换成电信号，经过模/数转换器转换成二进制数据、进行数据组织、存储、运算处理。加速度传感器是一种能够测量加速力的电子设备，典型应用在手机、笔记本电脑、步程计和运动检测等。

配件

Supplied Accessories: (1) model 6200 mounting stud

Recommended Accessories: model 6213 adhesive mounting base, model 6258 magnetic mounting base

Compatible Cables: 6776A

订货型号

Model    Sensitivity  Range     Maximum Shock  Noise Broadband

        (mV/g)       (Gpeak)   (Gpeak)        (grms)

7705A1   10           ±200     5,000          0.008

7705A2   50           ±40      5,000          0.002

7705A3   100          ±20      5,000          0.0008