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Plant maintenance, test and measurement
ROUND UP
P
ressure and level measurement manufacturer
VEGA
has the ideal
instruments for application in the gas separator, where several
processes take place in extreme conditions and safety and accuracy
are imperative.
Liquefying natural gas when it is extracted, as well as gas residues
from the mineral oil production is done by increasing the pressure.
However, the quality of the gas is still impaired because of the con-
stituent water. In the gas separator, the so-called scrubber, the water
is bound chemically by adding glycol and separated from the gas.The
effectiveness of this multistage process substantially influences the
productivity and quality of the gas extraction. Reliable measurement
of all process parameters is therefore particularly important.Very high
pressures up to 150 bar (217 5 psig) keep the gas in a liquid state.
The level of the gas/water mixture, described as a condensate, must
be reliably and quickly determined in order to allow the continuous
gas drying process to run effectively and uninterruptedly. VEGA’s
radar sensor, theVEGAPULS 66 with its ceramic antenna system and
graphite seal measures the level contactlessly and reliably under
these extreme conditions. Its long service life and maintenance-free
operation enable long operating periods without shutdowns.
The separation of gas and water is carried out through precipita-
tion of the glycol-bound water. Different densities create an interface
between the liquids. The position of the interface in the container
determines the quantity of the respective liquid that must be added
or discharged to ensure a continuous process.
Installed in a bypass vessel, the
VEGAFLEX 86 sensor measures the
position of the interface with the help
of guided microwaves.The great dif-
ference between the dielectric prop-
erties of water and gas make a sure
detection of the interface possible,
even when the composition of both
liquids fluctuates.
Enquiries: John Groom.Tel. 011 795
3249 or email john.groom@vega.com.
Power factor
correction service
available
M
agnet
offers the local market a highly
efficient power factor correction (PFC)
service, designed to protect electrical and
electronic equipment from potential dam-
age and to reduce electricity usage.
“The growing number of electrical and
electronic devices being used in business
and increasing electricity consumption in
South Africa is putting enormous pressure
on this country’s power grids and ageing de-
livery systems,” says Brian Howarth, manag-
ing director of Magnet. “The solution to this
problem is to become more energy efficient
and to lower electricity bills by using power
more efficiently and to protect sensitive
electrical and electronic equipment from
damage caused by inferior power supply.
“Every electrical surge affects equipment
in manufacturing plants, machine shops,
data centres, commercial buildings and
healthcare facilities. Major power quality
events can result in machinery shutdown
and significant loss of production.
Enquiries: Brian Bilton.Tel. 031 274 1096 or
email brianb@magnetgroup.co.za.
Working under pressure in a gas separator