Thermal Dispersion Technology |
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The typical thermal mass sensing element contains
two thermowell-protected Resistance Temperature
Detectors (platinum RTDs). When placed in the
process stream, one RTD is heated and the other RTD
senses the process temperature. The temperature
difference between the two RTDs is related to the
process flow rate as well as the properties of the
process medium. Higher flow rates or denser media
cause increased cooling of the heated RTD and a
reduction in the RTD temperature difference.
Advantages of Thermal Dispersion
 No moving parts, orifices, bearings or seals to
foul or fail
Accuracy for precision flow measurement,
especially in low flow applications
Repeatability for consistent measurement in
complex process environments
Wide flow range and wide turndowns for a broad
range of applications
Highly reliable and dependable in rugged process
environments
Easy installation with reduced maintenance
requirements
Coriolis Technology |
The Coriolis operating pinciple requires
fluid flowing through a vibrating flow tube
that causes a deflection of the flow tube
proportional to mass flow rate. Unaffected
by variations in pressure, temperature,
density, electrical conductivity and
viscosity, the Coriolis flow meters provide very
accurate mass flow measurement over wide
flow ranges. Advanced technology is utilized
to achieve unsurpassed operational
performance stressing safety, reliability
and quality.
The Coriolis flow meters feature exceptional
accuracy of 0.1% of actual flow typical, and
repeatability of 0.05%. It is unaffected by
pressure or temperature and can measure the
mass flow rate of liquids, slurries, gases,
or vapors by processing multi-parameter
information that includes: mass flow,
volumetric flow, density, temperature and
fraction flow.
Advantages of Coriolis Technology
True mass flow output
Density and temperature output
Extremely accurate
High flow rates
High pressure applications
Low pressure drop |
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