Single Channel Systems
Single channel AE-systems are a cost efficient alternative to fully featured AE-measurement systems such as the AMSY series. Single channel AE-systems are suitable for applications which only require monitoring the peak amplitude of burst AE and / or the average signal level of continuous AE. These single channel systems were developed to monitor insulator crimping processes, paper tensile testing, scratch testing and can be deployed in any other monitoring application where AE indicates the presence of e.g. a damage process.
ASCO-DAQ2 is a one channel digital AE-system including software for acquisition and analysis.
ASCO-P is an analog AE-signal conditioner.
ASCO-DAQ2 is an easy to operate and versatile, single-channel Acoustic Emission (AE) system well suited for many applications such as process monitoring measuring burst and / or continuous AE. ASCO-DAQ2 is a data acquisition module in a rugged box which houses the well proven Vallen AE Signal Conditioner (ASCO-P). Connected to a PC using the standard USB 2.x interface the 4-channel data acquisition module samples APK (Acoustic Peak Amplitude), ASL (timely average of the logarithmized AE signal), external parameters, such as stress, strain, pressure and temperature at a programmable sampling rate and stores the data to a file. ASCO-DAQ2 comes with ready-to-use powerful AscoDaq software package for data acquisition and analysis including automated monitoring and alarm modes.
Application Example: Monitoring the Crimping Process
For the production of high voltage isolators that shall carry heavy overhead power lines, a metallic fitting is crimped onto a fiber glass rod. The crimping process must be well adjusted. Most important process parameters are hydraulic pressure and duration of pressurization. If crimping pressure is too low, the mechanical joint might fail under tension. If pressure is too high, the brittle fiber glass rod might become damaged and also fail under tension. The AE methode detects any damaging of the fiber glass rod in real time, during the crimping process. ASCO-DAQ2 is the most efficient solution for this application: simple to use, highly accurate and reasonable priced.
The AE-Signal Conditioner ASCO-P is a low cost, single channel, analogue device that helps monitoring growth of defects in real time. The analogue output signals (APK, ASL) can be recorded by a data logger for real time or post analysis. A digital threshold crossing output pulse can be used as a real time trigger for controllers.
ASCO-P converts the AE-sensor signal into a peak signal (APK) and an average signal (ASL). The peak signal is stretched to 0.5 or 51 ms eanbling a slow data logging unit to record short peak amplitudes of an AE signal. The basis of the average signal is a logarithmized input signal. Additionally, a digital event output allows for external event counting.