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IEPE是指一种自带电量放大器或电压放大器的加速度传感器。IEPE是压电集成电路的缩写。因为由加速度传感器产生的电量是很小的，因此传感器产生的电信号很容易受到噪声干扰，需要用灵敏的电子器件对其进行放大和信号调理。IEPE中集成了灵敏的电子器件使其尽量靠近传感器以保证更好的抗噪声性并更容易封装。
美国Dytran的3187D是一款IEPE加速度传感器/振动传感器，灵敏度500mV/g，频响低，低至0.48Hz。
The Dytran 3187D is an IEPE accelerometer with a sensitivity of 500 mV/g and an excellent low frequency response of 0.48 Hz.
Design of the model 3187D incorporates an annular shear ceramic sensing element, packaged in a highly rugged stainless steel housing with a 2-pin MIL-C-5015 axial connector. The model 3187D is designed to be directly compatible with the Dytran model 6194 Immersion Proof boot. When used together, the sensor remains fully functional in an IP65 environment. The model 3187D is hermetically sealed for reliable operation in high humidity and dirty environments and case isolated to avoid EMI/ground loop interference.
特性
1. 500 mV/g sensitivity
2. 10g range
3. 0.48 to 1,000 Hz frequency range (±5%)
4. 2-pin axial connector
5. 1/4-28 tapped hole
6. 122 grams
7. Stainless steel
8. Hermetic
9. Case isolated
10. Available with water and oil resistant environmental boot
11. IEPE
应用
1. Industrial vibration monitoring
工业振动监测
2. Low frequency vibration measurements
低频振动测量
3. Walkabout data collection
徒步旅行数据收集
4. General purpose vibration monitoring
一般用途振动监测
WEIGHT 122 GRAMS
SIZE, HEX x HEIGHT 1.00 x 2.02 IN
MOUNTING PROVISION, (STUD PROVIDED) 1/4-28 TAPPED HOLE IN BASE x .20 DEEP
ELECTRICAL CONNECTOR, TOP MOUNTED MS3102A-10SL-4P 2-PIN MILITARY
MATERIAL CASE/CONNECTOR 316L ST. STEEL
PERFORMANCE
SENSITIVITY +/- 5% [1] 500 mV/G
RANGE FOR +/- 5 VOLTS OUT +/-10 G
FREQUENCY RESPONSE, +/- 5% .48 to 1000 Hz
FREQUENCY RESPONSE, - 3db FREQUENCIES .16 and 3000 Hz
MOUNTED RESONANT FREQUENCY >15 kHz
EQUIVALENT ELECTRICAL NOISE FLOOR (resolution) .00002 G RMS
AMPLITUDE NON-LINEARITY (ZERO BASED BEST FIT ST.LINE METHOD) 2.0 % F.S., MAX.
TRANSVERSE SENSITIVITY, MAX. 5 PERCENT
STRAIN SENSITIVITY .001 G's PER MICROSTRAIN @ 250/
ENVIRONMENTAL, both models
MAXIMUM VIBRATION 20 G's, RMS
MAXIMUM SHOCK 3000 G's, PEAK
TEMPERATURE RANGE -60 TO +250 oF
ENVIRONMENTAL SEAL GLASS TO METAL/WELDED, HERMETIC
SUBMERSIBLE OPTION--UNIT MAY BE TOTALLY SUBMERGED WHEN USED WITH MODEL 6194 IMMERSION PROOF BOOT.
ELECTRICAL
COMPLIANCE (SUPPLY) VOLTAGE RANGE [2] +18 to +30 VDC
EXCITATION CURRENT RANGE 2 to 10 mA
OUTPUT IMPEDANCE, NOM. 200 OHMS
OUTPUT BIAS VOLTAGE, +/-1 VOLT 12.5 VDC
DISCHARGE TIME CONSTANT 0.9 to 2.0 SEC.
OUTPUT SIGNAL POLARITY FOR ACCELERATION TOWARD TOP POSITIVE GOING
POWER/SIGNAL GROUND TO CASE ISOLATION, MIN. 10 MEGOHMS
订货型号
3187D
配件
1. Model 6176 mounting stud (1/4-28 to 1/4-28)
2. Model 4110C current source power unit, model 6186 adhesive mounting base, model 6187 magnetic mounting base, model 6190 magnetic mounting base, model 6194 protective boot
