|
联系方式 ： 13352927502
压电式加速度传感器，又称振动传感器，是基于压电晶体的压电效应工作的。某些晶体在一定方向上受力变形时，其内部会产生极化现象，同时在它的两个表面上产生符号相反的电荷；当外力去除后，又重新恢复到不带电状态，这种现象称为“压电效应”，具有“压电效应”的晶体称为压电晶体。常用的压电晶体有石英、压电陶瓷等，在现代生产生活中被应用于许许多多的方面，如手提电脑的硬盘抗摔保护，目前用的数码相机和摄像机里，也有加速度传感器，用来检测拍摄时候的手部的振动，并根据这些振动，自动调节相机的聚焦。压电加速度传感器还应用于汽车安全气囊、防抱死系统、牵引控制系统等安全性能方面。
美国Dytran的3123A是一款微型加速度传感器/振动传感器，适用于振动实验室，转配电动振动器和控制系统使用。
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
应用
1. Back-to-back accelerometer calibration
连续加速度校准
2. Low frequency, low g level measurements
低频、低g值水平测量
3. NIST traceable calibrations (when used with appropriate electrodynamic shaker, power supply and control system)
NIST可追踪式标定（当与电动振动器，电源和控制系统一起使用时）
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
订货型号
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
