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| Frequently Asked Questions |
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FAQs |
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Question |
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Answer |
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1. Can GranuMet XP acoustic emission systems be controlled via a network? |
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GranuMet XP can be controlled over a network using a variety of products including pcAnywhere. Alternatively, a control or data management system can interact with the GranuMet XP computer via TCP/IP using our proprietary GranuMet XPR software. For further details contact Ron Belchamber |
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2. What processes are currently employing GranuMet acoustic emission technology? |
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Acoustic emission monitoring is applicable to a wide range of processes. These normally involving multiphase product such as granules, slurries and aerosols. Examples include high- shear granulation, fluid bed granulation, fluid bed drying, fluid bed reactors, injectors, cyclones and entrained liquids and solids in gas streams. A large number of application notes are available from our downloads section. |
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3. Can GranuMet acoustic emission systems be installed in hazardous or zoned areas? |
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GranuMet XP systems are intrinsically safe (EEx ia IIC T3 or T4 rated). They operate via intrinsic safety barriers and can be used in all zoned areas (including Zone 0) without further protection. |
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4. What is the difference between ultrasonics and acoustic emission? |
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The word ultrasonics usually refers to system that launches an ultrasonic wave as part of making the measurement. There are a large variety of instruments including ultrasonic flow meters, level gauges and ultrasonic spectrometers. Acoustic emission is a passive monitoring technique that relies on the ultrasonic waves generated by the process under investigation. For more information on ultrasonic spectroscopy see ICHOS and for information on the latest acoustic emission technology see GranuMet XP |
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5. In high shear granulation does the acoustic emission generated by the motor interfere with the acoustic emission signal from the process? |
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No, the sensors are mounted on the granulation vessel. The acoustic emission signal from the process is so large that motor noise is insignificant.
Granulation signal is frequently 100 times the signal detected form the motor. |
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6. I am puzzled by some of the terminology used in acoustic emission monitoring. Is there anywhere that I can find an explanation of the terms? |
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Yes, you can download a list of commonly used acoustic emission terms from our downloads page. |
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7. How do I choose where I mount my acoustic emission sensors? |
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In most metal structures such as fluid beds, granulators, cyclones acoustic emission has a diffuse field.
This means that the acoustic emission is well mixed and highly homogenous in the walls of the vessel.
The affect of this is that mounting position is not critical. As long as there is a good acoustic transmission path the exact location of the sensors is immaterial. |
