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Subject to change without notice. 3
Rocket R 58 Dual Boiler espresso machine
Most dual boiler PID espresso machines measure the water temperature used for the
extraction in the brew boiler. The boiler temperature reading is then converted into a
“group extraction” temperature. This information is misleading and inaccurate, as
the digital readout does not display the real temperature at the group rather the
temperature the manufacturer wishes the user to see.
Rocket Espresso measure the boiler temperature and display the boiler
temperature.
(*) The “SCASE” Thermofilter elevates the art of espresso by employing applied
measurement science. Very convenient brew temperature measurements are now
possible through use of the Thermofilter. The results of these measurements enhance
machine optimization for specific coffee blends, enable individual coffee shops to
establish enhanced quality control procedures for their machinery, and increase
knowledge of the thermal behaviour of espresso machines. This knowledge is
immediately useful in compensating for intermittent duty machine behaviour. The
Thermofilter enables performance comparisons of different espresso machines and
technologies by use of systematic testing protocols. Accurate temperature studies
will result in new machines with enhanced tuneability and stability that produce
better taste than ever before.
The Holy Grail of temperature devices? Well, let’s just say, that this is the state of
the art of something big. How big? Nobody knows for sure. However new machines
coming to the market are being evaluated with this device, and the current World
Barista Championship (WBC) and United States Barista Competition (USBC)
technical standards teams all use this device to test and evaluate the machines used
in competitions.
(**) Ambient temperature 19°C. (66.2 °F)
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