污水處理設備 污泥處理設備 水處理過濾器 軟化水設備/除鹽設備 純凈水設備 消毒設備|加藥設備 供水/儲水/集水/排水/輔助 水處理膜 過濾器濾芯 水處理濾料 水處理劑 水處理填料 其它水處理設備
深圳市漢斯福特科技有限公司
深圳市漢斯福特科技有限公司
壓電式加速度傳感器，又稱振動傳感器，是基于壓電晶體的壓電效應工作的
壓電式加速度傳感器，又稱振動傳感器，是基于壓電晶體的壓電效應工作的。某些晶體在一定方向上受力變形時，其內部會產生極化現象，同時在它的兩個表面上產生符號相反的電荷；當外力去除后，又重新恢復到不帶電狀態，這種現象稱為“壓電效應"，具有“壓電效應"的晶體稱為壓電晶體。常用的壓電晶體有石英、壓電陶瓷等，在現代生產生活中被應用于許許多多的方面，如手提電腦的硬盤抗摔保護，目前用的數碼相機和攝像機里，也有加速度傳感器，用來檢測拍攝時候的手部的振動，并根據這些振動，自動調節相機的聚焦。壓電加速度傳感器還應用于汽車安全氣囊、防抱死系統、牽引控制系統等安全性能方面。
美國Dytran的7705A1是一款微型加速度傳感器/振動傳感器，集成了壓電和DC響應技術，目前為止只有Dytran做到 。
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
應用
1. Flight testing
飛行試驗
2. Health & Usage Monitoring Systems (HUMS)
狀態和使用監控系統
3. Machinery monitoring
機械監控系統
4. Ride quality
乘車品質
5. Wind turbine measurements
風力渦輪機測量
6. Wide range of structural response applications
結構響應應用
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/µ? 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
訂貨型號
7705A1
7705A2
7705A3
配件
Supplied Accessories: (1) model 6200 mounting stud
Recommended Accessories: model 6213 adhesive mounting base, model 6258 magnetic mounting base
Compatible Cables: 6776A
相關型號
3027B
3128A
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