Product category:
Powder and Solids Handling
News Release from: Pulsar Process Measurement | Subject: Pulsarguard 2010
Edited by the Processingtalk Editorial
Team on 09 August 2006
Pulsarguard 2010 listening to the flow
The Pulsarguard 2010 acoustic monitoring units give non-invasive and wear-free flow detection on key items of dry ingredient production transfer equipment
The Pulsarguard 2010 acoustic monitoring units give non-invasive and wear-free flow detection on key items of production equipment In any mixture where dry ingredients are used in bulk, there is a potential for the flow to block in silos, conveyors, pipes or feed chutes
This article was originally published on Processingtalk on 18 Jun 2003 at 8.00am (UK)
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This can affect the proportions of a mixture, leading to waste, rejects or in extreme cases resulting in damage to process equipment.
Pulsarguard 2010 warns of any interruption to flow, by "listening" to the flow of material inside the pipe.
Even very light solids have a characteristic flow signature, which the Pulsarguard detects even in a noisy factory environment and against a background of other vibration.
It provides virtually instant reaction to flow changes making it perfect for process protection applications.
The Pulsarguard unit sensor is about the size of a computer mouse, and is simply bolted into place on an angle outside the process pipework, where it sits and detects the tiny impacts of the ingredients passing inside the pipe.
No part of the instrument protrudes into the flow, making it completely hygienic, certainly more so than the flap switches that it is often used to replace.
The sensor is DC powered and generates a 0-10V signal which means it can be used either for process protection or as a simple solids flow measurement unit.
Pulsarguard 2010 contains a piezo ceramic crystal that gives an electrical output depending on the minute vibrations caused by ultrasonic activity.
The sensor listens to noise caused by impacts, cavitation and friction over a wide band width of 100-600kHz.
A sensitive amplifier increases the signal from the crystal element and this is then enveloped to give a smoothed version of the high frequency signal.
The output is a varying voltage (0 to 10V ) with a time constant of 100microseconds. Request a free brochure from Pulsar Process Measurement ...
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