diferencia radar vs ultrasonido_c18646
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Ultrasonic versus radarLevel and flow measurement in the water industry
According to Endress+Hauser, radar measurement technology offers many possibilities,
however, level measurement with ultrasonic remains the first choice in the water &wastewater industry.
Information about level and flow are important parameters for optimal operation ofsewage and drainage systems and the resulting measurement reuirements of the water
and wastewater industry can be met by means of different measuring principles. !or a
large number of the level reuirements, ultrasonic technology has proven advantages and
is considered a "standard#.
Physical characteristics
$ompared to ultrasonic, radar provides the physical advantage that the emitted
microwave pulses are unaffected by air movement and temperature layers e%isting acrossthe test measuring section. his property can be advantageous in measurements under
specific environmental conditions 'e.g. strong winds, rain, fog, solar radiation( in termsof measurement accuracy.
)espite the physical advantage of the radar measurement technology, the uestion is
whether the technology actually provides benefits in the daily operation of a wastewatertreatment plant*
In practice, many typical applications such as wet wells, overflow basins and sewers arebuilt underground or covered. ind and sunlight does not interfere with the measurement
here. ltrasound, however, can score with higher accuracy at close range, fle%ibleapplication, installation fle%ibility and minimum maintenance. !urthermore, e%perienceshows that even with flow measurements in open channels and weirs, the typical
measurement accuracy of ultrasound measurement '- mm and /,012 of the measured
distance( is sufficient.
he accuracy of flow measurement is influenced primarily by design, construction and
especially by the installation of the channel. In addition, for temperature3dependent
applications 'e.g. in deep wells( an e%ternal temperature sensor can be used formeasurement correction.
The water experts
Endress+Hauser#s portfolio in the field of ultrasonic measurement t is tailored to the
needs of customers in the wastewater industry, using state3of the3art technology that
provides an optimal price4performance ratio. hen ultrasonic reaches its limits, thecompany is able to offer any other relevant level measurement technology such as free
space radar, hydrostatic or capacitive.
$haracteristics of Endress+Hausers ultrasonic measuring technology include5
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6aintenance3free measurement of polluted waters.
7elf3cleaning to reduce influences from condensation effects.
7ensor housing that reduces heating by solar radiation.
Ideal solution for inaccessible measuring points.
emperature correction with integrated or e%ternal temperature sensor.
8otted sensors are fully immersed 'I89: protection against gas lea;s e.g. ammoniaand hydrogen sulphide(.
7afe signal evaluation during flooding with submergence shield 'optional(.
7uitable for use in ha