acaia 4250 Pearl Coffee Scale User Guide
- June 6, 2024
- acaia
Table of Contents
GET STARTED
Congratulations on becoming the owner of our newly reimagined Acaia Pearl.
Like the classic Pearl that it is based on, this scale is tailored for coffee
enthusiasts and professionals alike. It has a longer battery life and helpful
brewing modes and includes new features such as a patent-pending technology
for faster-weighing response time, a brand new Flow-Rate Indicator for real-
time feedback during pour-over brewing, a modular design for sustainable
maintenance, and USB-C charging.
This quick start guide includes all the essential information you will need
for setting up and using your Pearl and to explore its more advanced features
if you wish to do so. You can stick to the basics by simply monitoring weight
and time as you brew, or use the Flow-Rate Indicator and additional brewing
modes to enrich your pour-over experience — the choice is yours and the
possibilities are endless.
Fall in love with the Pearl for the first time or all over again. Start brewing today with consistency and insight.
Inside the Package
| Acaia Pearl Coffee Scale | Heat Resistant Pad | USB Type-C Charger Cable |
|---|---|---|
|
Before Using Your Pearl
Remove the warning sticker on the front| Remove the protective cardboard|
Place the scale on a steady and level surface
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| 
|
Scale Overview
LED Indicators
Flow-Rate Indicator
The Flow-Rate Indicator is an LED bar on the top of the display. It helps you
visualize your pouring speed in real-time and suggests thresholds for ideal
flow rates. The indicator measures flow rates with lit LEDs starting from 0.5
g per second in the center to 9.5 g per second to the end. When the flow rate
exceeds 11.5 g per second, the last three LEDs will light up with enhanced
brightness, indicating a high flow rate.
To provide thresholds for ideal flow rates, the first pair of brighter LEDs
represents 2.5 g per second. The second pair of brighter LEDs represents 6.5 g
per second, for targeting a faster pouring speed.
The Flow-Rate Indicator can be activated in Dual Display Mode, Pour Over Auto-
Start Timer Mode, and Beverage Mode. You can turn the indicator on or off in
the advanced settings menu.
Battery Charging
You can use the included USB Type-C charger cable to connect the Pearl to a
USB port for charging. Fully charged and with normal use, the scale can be
used continuously for about 30-40 hours.
The Acaia Pearl is equipped with charging protection to avoid charging under
high temperatures. It is normal if the scale does not charge when its surface
is still hot from brewing coffee. The battery charging function will be
enabled again when the scale has cooled.
Advanced Settings
The Acaia Pearl includes all the essential brewing modes to suit your coffee
brewing needs. Out-of-the-box settings include the most essential modes:
Weighing Only Mode/ Dual Display Mode. Explore and enable more brewing modes
with additional features such as auto-start, auto-tare, and beverage weight
calculation in Advanced Settings. You can also tailor the scale according to
your preference by changing the system settings, such as adjusting the screen
brightness, turning the Flow-Rate Indicator on or off, and changing the auto-
off timer setting.
To access Advanced Settings, press and hold while the LED display shows. 538
Continue holding until the battery level is displayed, the scale will then
enter the settings menu automatically.
See the next section for brewing modes that can be selected through Advanced
Settings.
Brewing Modes at a Glance
Mode 1 – Weighing Only Mode
The weight-only mode for all weighing purposes. Press and hold to select gram or ounce as your weighing unit.
Mode 2 – Dual Display Mode
With a dual display of timer and weight, this mode is made for all your coffee brewing needs, with manual control for timer and tare functions.
Mode 3 – Pour Over Auto-Start Timer Mode ( )
This mode is designed to aid pour-over coffee brewing. The scale will detect
the start of the flow from the kettle into the carafe and automatically start
the timer function; the timer stops when the brewing equipment has been
removed from the scale. When the carafe is removed from the scale, the display
flashes the final beverage weight.
Mode 4 – Portafilter Mode ( )
This mode is designed to speed up the workflow of accurately weighing
coffee grounds in a portafilter. The scale automatically tares the portafilter
and allows adjustment of the ground coffee in the portafilter. The mode will
reset 15 seconds after the portafilter has been removed to allow weighing for
the next shot.
Mode 5 – Beverage Mode
This mode is designed to measure the coffee-to-beverage ratio. It is one of
the most consistent methods for measuring pour over-extraction. With this
mode, you will be able to see the time elapsed for the brew, the total amount
of water added, beverage weight in the carafe, and the coffee-to-beverage
ratio at the end of the brew.
Step 1. Place the cup/carafe on the scale.
Press and hold to proceed to the next step.
Step 2. Place the filter/dripper on the cup.
Press and hold to proceed to the next step.
Step 3. Put the coffee in the filter.
Press and hold to proceed to the next step.
Step 4. Start pouring water and the timer will start automatically.
Tap when finished.
Step 5. Remove the filter/dripper from the cup.
The Pearl will display the brew summary as the example below:
Calibrating Your Scale
The Acaia Pearl is a precision instrument, and regular calibration is recommended with frequent use. To perform a smart calibration, select Weighing Only Mode, switch the unit to grams, and follow the steps below:
Note: You may also use 500 g, 1000 g, or 2000 g weights. If you use
weights other than Acaia Weights, we recommend standard F2 class weights.
Caution
– Do not place hot objects directly on the weighing pan. Use a heat-resistant
pad.
– Any modification made without the consent of the manufacturer may result in
damage to the scale.
– Avoid using the scale near very strong magnetic fields.
Apps
Acacia has a suite of free apps that are designed for different uses and scenarios. Connect your Pearl with our apps to enhance your brewing experience.
https://acaia.co/pages/apps/pearl
Find Help in Your Language
Find the Pearl User Manual online in English or visit our help center at
help.acaia.co
https://acaia.co/pages/manuals/pearl
**Find Us Online
** @acaiacoffee
Need help? Contact us at [email protected]