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Part No: ATAC1354 |
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| The Model 1354
Hallikaninen analyser, is a completely automativ process steam instrument for
measuring vapour pressure. Accurate measurements that correlate with ASTM D323
/ D 1267 can be made on samples having viscosities up to 10 cP. |
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Liquefied petroleum gas |
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Gasoline |
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Crude oil |
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Oil |
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The sample flows
under constant temperature and pressure through a nozzle which is mounted
inside a venturi shaped aspirator.
As the sample is forced through the
nozzle, the fluid velocity increases creating a pressure drop sufficient to
induce vaporization of the liquid
The relationship between the fluid
velocity and pressure is given be the flow energy equation Since the fluid
temperature is held constant and the pressure at the nozzle inlet is maintained
at a level that causes vaporization of the sample, the pressure at the nozzle
output is effectively the kinetic vapour pressure, (KVP) and is calibrated to
equal the RVP . This pressure is measured by an absolute pressure transmitter
that gives a continuous output. A back pressure regulator prevents back flow of
the sample and vaporization in the output line.
The nozzle inlet
pressure is maintained constant by passing the sample through a pressure
regulating valve. |
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The critical
components are maintained at a fixed temperature by immersion in an oil bath,
the temperature, of which , is controlled by a precision temperature
controller, heater and when necessary, water cooling.
The temperature
is monitored by the relevant ASTM (IP) thermometer. the analyser can be fitted
with a smart electrical output signal from a microprocessor based transmitter
to interface with DCS |
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| For full data sheets
and a written quotation please contact our Mindex office on
sales@mindex-ltd.co.uk including
your company name, telephone numbers and details of your product of
interest |
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