Level Meaurement Innovation

Posted in: , on 29. Sep. 2013 - 16:10

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Level Measurement Technology Innovation

The importance of accurate measurement technology to business cannot be underestimated. Whether it be for actually giving accurate stock measurements as distinct from stock guesstimates and all that implies from a financial perspective, to providing production managers with better ways of managing their stock levels to ensure that stocks are at optimal levels; technology has been developed for this all important task.

If stock volume measurement was so easy there would be one dominant technology and no need to discuss competing technologies and technological innovation for this task. However, we are not dealing here with tablet computers or other large items that are kept in relatively sterile environments and are bulky and therefore relatively easy to keep accurate stock counts. When it comes to generating accurate measures of such things as those stored in silos or other types of containers that are often stored outdoors and in dusty and humid environments that influence measurement readings, the dominant technology has been a long time coming.

All current level measurement techniques rely on the sending of a signal in some way, shape, or form to the material that it is attempting to measure. When the echo is returned from the signal that is sent, the measurement instruments use different algorithms to calculate the volumes that are used by management on which to base their decisions.

Volume measurement technologies include the following:

•A radiating beam is sent to generate an accurate image of a container's contents, or at least the level of its surface.

•Radar/microwave level sensors – these technologies work by sending electromagnetic waves from one end of a container to sensors on another end. The height of the contents within the container is used to extrapolate the stock levels. A major disadvantage of these technologies is that data is gathered based on a single continuous sample point which does not factor in differences in the surfaces of the materials resulting in inaccurate readings.

•Ultrasonic level sensors – this technology works in a similar manner to radar/microwave level sensors but uses ultrasonic sound waves transmitted through the container instead of electromagnetic waves. The limitations of this technology include the limited range of the waves and the ability to transmit only single frequencies. This enables the time/distance of an echo to be measured but not its direction. It also requires custom design for the different container shapes and suffers from inaccuracy in dusty environments.

•The APM 3DLevel Scanner – the industry leader in the field of level and volume measurement, It works by sending of low frequency pulses from an array of three antennas and analyzing the echoes to gauge volume levels. The 3DLevelScanner differs in many respects from other technologies. It measures multiple points simultaneously along the surface of the material generating a 3D picture of the material that, due to the ability to easily integrate the technology with existing ERP systems, can be monitored from a remote location. The3DLevelScanner also measures not only the time/distance of each echo but also its direction resulting in more accurate volume measurement. A 2D array beam-former that is lowered into the container also transmits low frequency pulses whose echoes are filtered out and processed by the same Digital Signal Processor that generates the 3D picture. The The3DLevelScanner not only provides greater measurement accuracy but also increases safety concerns caused by uneven sidewall loading.

The 3DLevelScanner has become the measurement device of choice by industry heavyweights across a range of industries. It is easy to see why.


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