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PAS3 Acoustic Emission Multi-functional Preamplifier
Model：
PAS3
Description：
The voltage signal output by acoustic emission sensors can sometimes be as low as a few microvolts. Such weak signals, if transmitted over long distances, will inevitably decrease in strength. The original sensor signal needs to be amplified several times before transmission, and then transmitted to the signal acquisition unit through a high-frequency coaxial cable. The preamplifier is an analog circuit, with the input being the voltage signal output from the acoustic emission sensor, and the ou
Features：
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PAS Acoustic Emission Multi-functional Preamplifier
Description
The voltage signal output by acoustic emission sensors can sometimes be as low as a few microvolts. Such weak signals, if transmitted over long distances, will inevitably decrease in strength. The original sensor signal needs to be amplified several times before transmission, and then transmitted to the signal acquisition unit through a high-frequency coaxial cable. The preamplifier is an analog circuit, with the input being the voltage signal output from the acoustic emission sensor, and the output being the amplified analog signal.
Functional Description
- Input Switch: choose between "Single" input (left) or "Differential" input (right) as the input signal.
- Differential Input: connect it when a differential sensor is used. BNC
- Gain Switch: choose one of the gains. There are three options, from left to right, 40dB | 20dB | 60dB respectively.
- Filter Knob: rotate the knob to choose one of the analog filter range. There are four options, from left to right, 5k-1200kHz | 80k-480kHz | 5k-160kHz | 5k-50kHz.
- Attenuation Switch: choose between the two attenuation values, 0dB (left) or -6dB (right).
- Single Input: connect the port when the sensor is single core (most sensors are).
- Power Port: the power port need to be connected to the external power adaptor when this preamp output is not connecting to the AE data acquisition system. The power input voltage should be 18V to 32V DC.
- Power Indicator: when there is power input (no matter it’s the phantom power from AE data acquisition system or the DC power from the external power adaptor), the power indicator is turned on. DC port.
- Signal Output: output amplified and filtered electrical acoustic emission signals. It also supports the phantom power input from the AE data acquisition system to power the preamp. BNC connector
- Magnetic Base: it can have magnets installed at the bottom or not for easier installations. Choose when ordering.
Main Features
- The PAS3 preamplifier is a broadband universal type that can be used for most common types of sensors and acoustic emission acquisition cards from various manufacturers
- The preamplifier gain can be selected from 14, 20, 34, 40, 54, and 60 (note: supports fine-tuning 0dB or -6dB on gains of 20dB, 40dB, and 60dB)
- Built in filter, with 4 selectable frequencies
- Support single ended input or differential input
- There are two power supply options: phantom power supply, which is carried and supplied by signal lines; Or directly powered by an external power source
- Capable of protecting against electrical shock and restoring against blocking phenomena
- Automatic Sensor Testing (AST) function, which can emit test signal sources to sensors (note: it needs to be used in conjunction with upper computer software, such as Qingcheng's SWAE software)
- Equipped with input/output reverse protection capability, with indicator light prompt. The green indicator light indicates that the input/output terminals are connected correctly
- Metal shell, shielded from electromagnetic interference, impact resistant
- The bottom shell has magnetic attraction and can be adsorbed on the surface of metal materials
Technical Specifications
| Gain | 20/40/60dB |
| Attenuation | 0/-6dB |
| Response frequency | 5KHz~1200KHz |
| Equivalent noise | <7uV (60dB gain RMS value) |
| Filter |
5KHz~50KHz 5KHz~160KHz 80KHz~480KHz 5KHz~1200KHz |
| Maximum transient output | 20V（Vpp） |
| Maximum steady-state output | 13.6V（Vpp） |
| Board power supply | 7.5V-32V |
| DC power supply | 18-32V |
| Rated load | 50 Ω |
| Working temperature | -20 ℃ ~ +60 ℃ |
| Housing material | Cast aluminum |
| Dimensions (LxWxH) | 10.5cm x 5.5cm x 7cm |
| Weight | 483.7g |
| Protection level | IP65 |
Data Sheet.pdf
