Achieve More Productivity with OPTIMASS - Krohne

Application Story
Czech Republic Custody Transfer
A T25 Optimass Meter was installed for Propane/Butane emptying of rail tankers
with a capacity of approximately 42000 kg at BP in the Czech Republic. Accuracies
of 0.2 to 0.3% were repeatedly achieved which included the uncertainty of the
weighbridge used for the railcars. Resolutions of these weighbridges are typically
in the tens of kilograms! This meter is installed as a Custody Transfer meter
according to Czech Republic guidelines and directives.
All weather emptying from railway tanks using Optimass
Another Optimass T25 for Custody
Transfer was subsequently
installed at BP in Dysina near the
city of Pilsen filling tank-trucks
with propane/butane. The
measurement error is approx. 30
kg per 10000 kg of the gas, but it
also comprises the error of the
recomputation as the tank-trucks
are filled according to mass but the
distribution to end users is
performed according to volume and
the recomputation to mass is done
acc. to special tables.
Process Parameters
Application:CT transfer of bulk
Butane / Propane products
Flow Rate: 12000 kg/h
Pressure: 6-8 bar
Temp: Ambient (-30 to +35°C)
Process Parameters
Application: CT transfer of bulk Butane /
Propane products
Flow Rate: Nominal flow rate of a 25 T
is 34,500 kg/h, emptying at 14,000 kg/h
(pressure drop 0,3 bar, velocity 15,4 m/s)
Pressure: 7 to 12 bar
Density: 560 kg/m3
Temperature: Ambient (-30 to +35°C)
The installation in Dysina
Why KROHNE?
KROHNE Czech Republic is known for their
customer support and client was confident
that the solution proposed would do the job.
Our thanks to Radmilla Kompova of KROHNE CZ for this application story
Copyright KROHNE, inc. , 2009 OPTIMASS Applications Page No.57
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