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Introduction
The Baratza
ESATTO
TM
is a precision, weighing accessory that is designed specifi-
cally for use with your Baratza Maestro Plus
TM
, Virtuoso
TM
or Preciso
TM
or Encore
TM
grinders. This innovative addition to your grinder will allow you to grind precise
dosages of coffee using real-time weight-based control. With its easy assembly
and simple operation, you will be automatically dosing ground coffee to
/ - 0.15 gram repeatedly.
Repeatability and accuracy
We want to share the “logic” we use to get as close as possible to the de-
sired weight in the
ESATTO
TM
. We knew we would have to anticipate the desired
(programmed) weight by some factor (i.e. we could not wait until the total pro-
grammed weight was in the bin to stop the grinder). Like most things in life, if the
target is moving, you must lead it a bit or you’ll miss. After a lot of coffee grinding
at espresso, filter and press pot, we picked an average “lead” of 0.7g. Our goals
in designing the
ESATTO
TM
were twofold: absolute accuracy and repeatability. At
mid scale for grind (filter) the absolute accuracy is very high. The flow rate of
coffee thru the grinder varies from 1.5g/sec at espresso to 2.5g/sec at press. We
know that on espresso grind setting we will come up about 0.2g to 0.3g shy of the
target and for press, we’ll come up about 0.2g to 0.3g long. Though we miss the
mark of absolute accuracy (at the two extremes), the good news is these values
are VERY repeatable. If you are experiencing challenges in hitting your desired
weight, We would suggest that when requiring 20.0g of espresso, you program
20.2g to 20.3g. Conversely, when grinding for 20.0g for Press, program 19.7g to
19.8g.
Operations manuals are available in the following languages at
www.baratza.com
English.pdf
Spanish.pdf
French.pdf
