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Help CenterUniversal Low Noise Charge Amplifier
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Specifications
1.Multiple Input Mode:Charge/Voltage/IEPE input2.high pass filter,w pass filter
3.other charge amplifiers are available
1.Introduction
Charge amplifiers convert the charge output by a piezoelectric sensor into a proportional voltage, which is used as an
input variable for analysis systems, and can be digitized in an analog-to-digital (A/D) converter if necessary. A charge amplifier basically consists of an inverting voltage amplifier with a high open-loop gain and capacitive negative feedback. It relies on a metal oxide semiconductor field effect transistor (MOSFET) or a junction field effect transistor (JFET) at its
input to achieve high insulation resistance and minimize leakage current. If the open-loop gain is sufficiently high, the cable and sensor capacitance can be neglected, leaving the output voltage dependent on just the charge at the
charge amplifier input and the range capacitor.
2.Features:
8102: multiple input type: Charge, Voltage, IEPE; Optional Gain, High-pass filters, Low-pass Filters, Sensitivity uniformization;
8102I: built-in dual integral circuit , can test Acceleration, Velocity and Displacement;
Built-in double integrators circuit for acceleration, displacement and velocity; Switchable for Gain, LPF, HPF,
Sensitivity normalized. Charge and Voltage input. Int. Battery and Ext. Source Supply.
3.Specification
Model |
8101A/B |
8102 / 8102I |
8103 |
Input Range |
±104pC |
Voltage/IEPE:±10V ; Charge:±106pC |
±105pC |
Sensitivity uniformization |
Fixed |
0.100 to 999 |
1.00 to 10.99 |
Gain |
1 to 100mV/pC(Fixed, Customized) |
0.01,0.1,1,10,100,1000mV/pC |
0.1,1,10,100,1000mV/pC |
High-pass Filters |
1Hz(Fixed) |
A:0.3,1,10,30,100Hz; V:1Hz; D:1Hz |
0.3Hz (Fixed) |
Low-pass Filters |
≤100kHz(Fixed, Customized) |
0.3,1,3,10,30,100kHz |
0.3,1,3,10,30,100kHz |
Accuracy |
±1% |
A:±1%;V: ±3% ;D: ±3% |
±1% |
Noise |
≤10μV |
≤5μV |
≤5μV |
Output Range |
±5V |
±10V |
±10V |
Power Supply |
A type:±14V to ±18VDC B type: +14V to +28VDC |
220V50Hz0.1A /110V60Hz0.2A |
220V50Hz0.3A /DC±18V |
Operating Temperature |
-10 to +50°C |
-10 to +50°C |
-10 to +50°C |
Weight |
90Gram |
1.3kg |
5.0kg(6 channels) |
Size |
L80×W50×H24mm |
W45×H122×D200mm |
W236×H132.5×D300mm |
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