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3123A加速度傳感器

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壓電式加速度傳感器，又稱振動(dòng)傳感器，是基于壓電晶體的壓電效應(yīng)工作的

詳細(xì)介紹

壓電式加速度傳感器，又稱振動(dòng)傳感器，是基于壓電晶體的壓電效應(yīng)工作的。某些晶體在一定方向上受力變形時(shí)，其內(nèi)部會(huì)產(chǎn)生極化現(xiàn)象，同時(shí)在它的兩個(gè)表面上產(chǎn)生符號(hào)相反的電荷；當(dāng)外力去除后，又重新恢復(fù)到不帶電狀態(tài)，這種現(xiàn)象稱為“壓電效應(yīng)"，具有“壓電效應(yīng)"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(xiàn)代生產(chǎn)生活中被應(yīng)用于許許多多的方面，如手提電腦的硬盤抗摔保護(hù)，目前用的數(shù)碼相機(jī)和攝像機(jī)里，也有加速度傳感器，用來(lái)檢測(cè)拍攝時(shí)候的手部的振動(dòng)，并根據(jù)這些振動(dòng)，自動(dòng)調(diào)節(jié)相機(jī)的聚焦。壓電加速度傳感器還應(yīng)用于汽車安全氣囊、防抱死系統(tǒng)、牽引控制系統(tǒng)等安全性能方面。

美國(guó)Dytran的3123A是一款微型加速度傳感器/振動(dòng)傳感器，適用于振動(dòng)實(shí)驗(yàn)室，轉(zhuǎn)配電動(dòng)振動(dòng)器和控制系統(tǒng)使用。

The Dytran 3123A is a double ended IEPE reference (comparison) accelerometer, offering a convenient means of determining the sensitivity and frequency response characteristics of unknown acceleration, velocity and displacement sensors. A vibration laboratory already equipped with an electrodynamic shaker and control system can easily incorporate use of the model 3123A to accomplish in-house NIST traceable calibrations. Model 3123A offers a 100 mV/g sensitivity, and mounts to a shaker head via a 10-32 tapped hole.

Back-to-back comparisons with a double ended calibration standard accelerometer, such as the Dytran model 3123A, entails mounting the test accelerometer directly to the top mounting surface of the calibration standard (model 3123A) and driving the coupled pair with an electrodynamic shaker system at various frequencies and amplitudes. At each test frequency, the amplitude is set and the corresponding output read from the test accelerometer. To form a complete measurement system, the user will need to supply the cables, power supply unit and electrodynamic shaker system. The model 3123A should be used for low frequency, low g level measurements.

特性

1. 100 mV/g sensitivity

2. 50g range

3. 10 to 5,000 Hz frequency range (±2%)

4. 10-32 radial connector

5. 10-32 tapped holes, top and bottom

6. 100 grams

7. Stainless steel

8. Calibration standard accelerometer

9. IEPE

應(yīng)用

1. Back-to-back accelerometer calibration

連續(xù)加速度校準(zhǔn)

2. Low frequency, low g level measurements

低頻、低g值水平測(cè)量

3. NIST traceable calibrations (when used with appropriate electrodynamic shaker, power supply and control system)

NIST可追蹤式標(biāo)定（當(dāng)與電動(dòng)振動(dòng)器，電源和控制系統(tǒng)一起使用時(shí)）

SYSTEM SPECIFICATIONS VALUE UNITS

SYSTEM SENSITIVITY @ 100 Hz [1] 100.00 ±1.0 mV/G

FREQUENCY RESPONSE, ±2% [1] 10 to 5,000 Hz

LINEARITY ± 1 % F.S.

RANGE F.S. FOR 5 VOLTS OUT ± 500 G

OPERATING FORCE RANGE [2] ± 10 Force-pounds

EQUIVALENT ELECTRICAL NOISE, (BROADBAND) .003 G, RMS

OUTPUT IMPEDANCE 2 Ohms

ACCELEROMETER MODEL 3123A SPECIFICATIONS

SENSITIVITY, ±5% 100 mV/G

DISCHARGE TIME CONSTANT 0.5 to 1.5 Sec

COEFFICIENT OF THERMAL SENSITIVITY .03 %/°F

TEMPERATURE RANGE -60 to +200 °F

TRANSVERSE SENSITIVITY, MAX 3 %

ELECTRICAL CONNECTOR, RADIAL 10-32 COAXIAL Jack

MOUNTING HOLES, TOP & BOTTOM 10-32 UNF-2B

MAXIMUM SHOCK 3000 G

MATERIAL (NON-MAGNETIC) 300 SERIES STAINLESS STEEL

BIAS VOLTAGE +7.5 to +9.5 VDC

SUPPLY CURRENT (CONSTANT CURRENT) 2 mA

COMPLIANCE VOLTAGE +20 VDC

WEIGHT 3.5/100 oz/grams

AMPLIFIER/POWER UNIT 4119B SPECIFICATIONS

SENSOR SUPPLY CURRENT/VOLTAGE, STD 2/+20 mA/VDC

FILTER, LOW PASS, ACTIVE VCVS 12 db/octave

SENSOR/OUTPUT CONNECTOR BNC/BNC Coaxial jack

INPUT POWER, STD MODEL, 115 VAC 2.4 VA

INPUT POWER, 'E' MODEL, 230 VAC 2.4 VA

POWER CORD, STD 6 FT 3-WIRE W/CHASSIS GND

WEIGHT 32/900 oz/grams

SIZE (H x W x D) [3] 5.5 x 1.6 x 8.0 Inches

(H x W x D) [3] 140 x 41 x 203 mm

TEMPERATURE RANGE 0 to +120 ° F

訂貨型號(hào)

3123A

配件

Supplied Accessories: (1) model 6200 mounting stud (10-32 to 10-32)

Recommended Accessories: model 4010C current source power unit, model 6213 adhesive mounting base

Compatible Cables: 6010A, 6011A, 6012A, 6016A, 6018A, 6022A, 6026A, 6032A, 6033A, 6049A, 6050A, 6051A, 6053A, 6054A, 6066A, 6069A, 6093A, 6099A, 6400A, 6401A, 6412A, 6429A, 6924A, 6930A, 6991A

相關(guān)型號(hào)

3120B

3128A

3123A 01.jpg