IEPE是指一種自帶電量放大器或電壓放大器的加速度傳感器。IEPE是壓電集成電路的縮寫。因為由加速度傳感器產生的電量是很小的，因此傳感器產生的電信號很容易受到噪聲干擾，需要用靈敏的電子器件對其進行放大和信號調理。IEPE中集成了靈敏的電子器件使其盡量靠近傳感器以保證更好的抗噪聲性并更容易封裝。
美國Dytran的3128A是一款超高靈敏度的IEPE加速度傳感器/振動傳感器，靈敏度高達1000mV/g，專為井下鉆頭振動監測和其他低開啟電壓應用而設計。
The Dytran 3128A is an IEPE accelerometer with ultra high sensitivity of 1,000 mV/g and was designed for down-hole drill head vibration monitoring and other low turn-on voltage applications where supply power is limited.
Sensors developed for down-hole vibration monitoring must be able to deliver accurate and reliable data, while simultaneously tolerating harsh conditions. Critical characteristics of these sensors include a low-profile design, broad operating temperature, and the ability to operate at low power levels. The Dytran model 3128A is ideal for such applications, as it is packaged in a low profile stainless steel housing with a vertical height of just 1.16-inches (29.5-millimeters) and was specially designed to operate from +2.0 to +3.5 VDC bias voltage.
The Dytran model 3128A is designed with 10-32 mounting capabilities and 10-32 radial connector. Units are case isolated to avoid EMI/ground loop interference and are hermetically sealed for reliable operation in high humidity and dirty environments.
特性
1. 1,000 mV/g sensitivity
2. 1.5g range
3. 0.25 to 3,000 Hz frequency range (±5%)
4. 10-32 radial connector
5. 10-32 tapped hole
6. 50 grams
7. Stainless steel
8. Hermetically sealed
9. Case isolated
10. High sensitivity
11. Operates from +2.0 to +3.5 VDC
12. IEPE
應用
1. Down-hole drill head vibration monitoring
井下鉆頭振動監測
2. Low turn-on voltage applications where power supply is limited
受限空間內低開啟電壓應用
Weight, Max. 1.8 oz 50 grams
Connector Type 10-32 UNF-2A 10-32 UNF-2A
Material, Housing/Connector 300 Series 300 Series
Sensing Element Ceramic Ceramic
Sensitivity, ±10% [1] 1,000 mV/g 102 mV/m/s2
Range for ± 1.5 Volts Output 1.50 g 14.7 m/s2
Frequency Response, ±5% 0.25 to 3000 Hz 0.25 to 3000 Hz
Resonant Frequency > 20 kHz > 20 kHz
Broad Bａnd Resolution 0.0002 Grms 0.002 m/s2 rms
Linearity [2] ±1 % F.S. ±1 % F.S.
Maximum Transverse Sensitivity 5 % 5%
Base Strain Sensitivity @ 250με 0.008 g/με 0.08 m/s2/με
ENVIRONMENTAL
Maximum Vibration 300 Gpeak 2943 m/s2 peak
Maximum Shock 100 Gpeak 981 m/s2 peak
Temperature Range -60 to 200 °F -51 to 129 °C
Coefficient of Thermal Sensitivity ≤ 0.08 %/°F ≤ 0.14 %/°C
Seal Hermetic Hermetic
ELECTRICAL
Supply Current Range [3] 0.4 to 0.7 mA 0.4 to 0.7 mA
Compliance Voltage Range 5 to 7 Volts 5 to 7 Volts
Warm up time (to 10% of Bias) <30 sec <30 sec
Output Impedence,Typ 100 ? 100 ?
Bias Voltage 2.0 to 3.5 VDC 2.0 to 3.5 VDC
Discharge Time Constant 2 to 4 Sec 2 to 4 Sec
Electrical Isolation 10 G?,min 10 G?,min
訂貨型號
3128A
配件
Supplied Accessories: (1) model 6200 mounting stud (10-32 to 10-32), (1) model 6215 thermal boot
Recommended Accessories: model 4110C current source power unit, model 6196 magnetic mounting base 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
相關型號
3027B
7705A1
