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Guided Wave Radar Level Measurement Is Best Solution |
June 29, 2006 |
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Posted by Joe Lewis at June 29, 2006 09:17 AM |
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Finding the best level measurement solution for your bulk solids is not always simple and easy. There are several different technologies to consider, including smart weight & cable, guided wave radar, ultrasonic, through-air radar and laser. For the vast majority of bulk solids applications, especially for powders, the use of through-air technologies like ultrasonic, through-air radar and laser can be very problematic. That leaves the smart weight & cable devices and guided wave radar as the most viable candidates.
When you need continuous measurement updates and prefer no moving parts, guided wave radar is your best choice. Why? Because, unlike most other technologies, radar technology is practically immune to process conditions such as temperature, pressure and atmospheric composition. In addition, guided wave radar uses a continuous cable wave-guide to direct the radar pulses to the material surface. The radar energy does not disperse, unlike through-air radar and ultrasonic. This is important as only a small portion of microwaves will be reflected off the material surface. The amount and strength of reflection is based on the dielectric constant of the target material. The lower the dielectric constant, the less energy is reflected. However, because the radar pulses are guided along the wave-guide stronger reflections exist than with through-air devices. This is a major advantage of guided wave radar and is why it works!
Guided wave radar can effectively and reliably be used on challenging applications such as cement powder, flyash, slag powder and so many other bulk solid materials whether powder or granular. And guided wave radar does not require high dielectric materials to work. Guided wave radar, using TDR (time domain reflectometry) technology can measure materials with dielectrics as low as 1.4.
Need a solution? Need a reliable and high-value level measurement system? Look at today's guided wave radar units!
www.flexar.info
Joe Lewis
Monitor Technologies LLC
jlewis@monitortech.com
www.flexar.info
www.monitortech.com
