美国DT 7705A1低频

7705A1低频加速度传感器

 

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.

 

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 base.

 

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  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 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/?? 0.0039 m/s2

Bias Offset Max 0.2 g's 1.96 m/s2

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

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

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

 

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

7705A1

7705A2

7705A3