加速度傳感器中有一種是三軸加速度傳感器，同樣的它是基于加速度的基本原理去實(shí)現(xiàn)工作的，加速度是個(gè)空間矢量，一方面，要準(zhǔn)確了解物體的運(yùn)動(dòng)狀態(tài)，必須測(cè)得其三個(gè)坐標(biāo)軸上的分量；另一方面，在預(yù)先不知道物體運(yùn)動(dòng)方向的場(chǎng)合下，只有應(yīng)用三軸加速度傳感器來(lái)檢測(cè)加速度信號(hào)。由于三軸加速度傳感器也是基于重力原理的，因此用三軸加速度傳感器可以實(shí)現(xiàn)雙軸正負(fù)90度或雙軸0-360度的傾角，通過(guò)校正后期精度要高于雙軸加速度傳感器大于測(cè)量角度為60度的情況。三軸加速度傳感器的好處就是在預(yù)先不知道物體運(yùn)動(dòng)方向的場(chǎng)合下，只有應(yīng)用三維加速度傳感器來(lái)檢測(cè)加速度信號(hào)。三維加速度傳感器具有體積小和重量輕特點(diǎn)，可以測(cè)量空間加速度，能夠全面準(zhǔn)確反映物體的運(yùn)動(dòng)性質(zhì)。
美國(guó)Dytran的3243A是一款小型、防潮式三軸加速度傳感器/振動(dòng)傳感器，自帶2m防濺式電纜線。
The Dytran 3243A is a low profile, moisture resistant triaxial IEPE accelerometer with an overall height of 0.30 inches (7.6 millimeters) and weighing just 2.5 grams.
Featuring titanium construction, a 10 mV/g sensitivity and adhesive mounting, the model 3243A incorporates a 2-meter integral cable with a splash-proof boot at the point of sensor and cable connection. The hermetically sealed cable-to-accelerometer boot seal makes it possible for the sensor to be temporarily submerged during testing. Units are case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 1.5 to 10,000 Hz frequency range (±5%)
4. 2-meter integral cable
5. Adhesive mount
6. 2.5 grams
7. Titanium
8. Hermetic
9. Case isolated
10. Lightweight
11. Triaxial
12. Moisture resistant
13. IEPE
應(yīng)用
General purpose triaxial vibration measurements in damp conditions
濕度條件下三軸振動(dòng)測(cè)量
Weight, Less Cable, Max 0.09 oz 2.5 grams
Integral Cable [1] Cutoff Cutoff
Length 78 Inches 2 meters [1] Side Mounted
Mounting Provision Adhesive Mount Adhesive Mount
Material, Accelerometer Titanium Titanium
Sensing Material Quartz Quartz
Sensitivity, -10 / +15% [2] 10 mV/g 1 mV/m/s2
Range F.S for ± 5 Volts Output ±500 g ±4905 m/s2
Frequency Range, -5 / +15% 2 to 7000 Hz 2 to 7000 Hz
Resonant Frequency > 40 kHz > 40 kHz
Equivalent Electrical Noise Floor 0.007 Grms 0.069 m/s2 rms
Linearity [3] 1 % F.S. 1 % F.S.
Transverse Sensitivity, Max 5 % 5%
Strain Sensitivity @ 250µσ 0.039 G's/µσ 0.38 m/s2/µε
Maximum Vibration ±600 Gpeak ±5886 m/s2 peak
Maximum Shock ±5000 Gpeak ±49050 m/s2 peak
Temperature Range -60 to+250 °F -51 to +121 °C
Seal, Hermetic Welded/GTM Header Welded/GTM Header
ELECTRICAL
Supply Current Range [4] 2 to 20 mA 2 to 20 mA
Compliance Voltage Range + 18 to +30 Volts + 18 to +30 Volts
Output Impedence,Typ 100 ? 100 ?
Bias Voltage +7 to +9 VDC +7 to +9 VDC
Discharge Time Constant 0.3 to 1.5 Sec 0.3 to 1.5 Sec
Electrical Isolation, Case Ground To Mounting Surface 10 G?,min 10 G?,min
訂貨型號(hào)
3243A
3243M2
配件
Recommended Accessories: model 4114B1 current source power unit
相關(guān)防潮型
3006A
