La Marzocco x Acaia Lunar Advanced Sensors Brew-by-Weight Scale

Elevate your espresso precision with the La Marzocco x Acaia Lunar Brew-by-Weight Scale, a specialised collaboration designed for seamless integration with La Marzocco espresso machines. This innovative tool moves beyond traditional timed extractions by using advanced sensors to measure liquid output in real-time. The scale communicates directly with the machine’s electronics to automatically stop the shot once your target yield is achieved, ensuring unparalleled consistency and a significantly more efficient workflow for busy specialty environments.

Engineered to withstand the rigours of a high-volume coffee bar, the scale features a durable, water-resistant design that perfectly complements the iconic La Marzocco aesthetic. It is remarkably simple to operate, allowing both professional baristas and dedicated home enthusiasts to reduce coffee waste and optimise flavour profiles with scientific accuracy. By removing the guesswork from every extraction, the Brew-by-Weight Scale stands as the ultimate upgrade for those who demand absolute precision and repeatability in every cup.

Acaia Lunar Brew-by-Weight Scale User Manual

You get all of these Freebies when you purchase through Prime Coffee Suppliers:

• Free! Delivery (Worth £60) 1-3 days Free Standard UK Delivery, Direct from UK Warehouse, Or 2-4 Days direct from warehouse in Milan.
  
• Free! 12 Months Parts Warranty

Features

Laboratory-Grade Precision: Offers a readability of 0.1g and a capacity of 2000g, ensuring total accuracy from the first drop of espresso to the final yield.

Ultra-Fast Response: Features a nearly instantaneous response time, allowing baristas to stop extractions at the exact target weight without lag.

Industrial Durability: Crafted with a premium anodised aluminium body that is water-resistant and built to survive the harsh environment of a commercial drip tray.

Built-in Flow Rate Indicator: A real-time visual bar that monitors your flow rate, helping you identify channeling and maintain extraction consistency.

Brew-by-Weight Integration: Specifically designed to pair with high-end espresso machines (like La Marzocco) for automatic volumetric shut-off based on weight.

Multiple Brewing Modes: Includes specialized modes for espresso and manual brewing, such as Auto-Start Timer, Auto-Tare, and Liquid-Only monitoring.

USB-C Rechargeable: Equipped with a long-lasting lithium-ion battery and modern USB-C charging, reducing waste and ensuring your scale is always ready for service.

Smart Connectivity: Features Bluetooth 4.0 technology to sync with Acaia’s suite of apps for firmware updates, brew logging, and remote monitoring.

Minimalist Design: At only 15mm high, its ultra-slim profile fits comfortably under even the most compact espresso machine group heads.

Specification of Acaia Lunar Brew-by-Weight Scale 

A New Era of Extraction: The La Marzocco x Acaia Brew-by-Weight Collaboration

In the world of specialty coffee, consistency is the ultimate pursuit. For years, baristas have balanced scales, timers, and manual switches to hit the perfect recipe. Now, a landmark collaboration between two industry titans La Marzocco and Acaia has digitised that craftsmanship with the Brew-by-Weight integration for the Linea Mini and GS3.

By merging La Marzocco’s legendary espresso engineering with Acaia’s world-class precision sensors, this partnership has created a workflow that effectively removes human error from the extraction process.

Seamless Integration: The Connected Workflow

This isn't just a scale sitting on a drip tray; it is a fully integrated component of the espresso machine’s ecosystem. Through the La Marzocco Home App, the Acaia-powered scale communicates directly with the machine’s electronics.

The process is transformative:

• Targeted Accuracy: The barista sets a target weight (yield) within the app.

• Live Feedback: As the shot begins, the scale measures liquid output in real-time with 0.1g sensitivity.

• Automatic Shut-off: Once the precise weight is reached, the machine automatically terminates the shot—ensuring every espresso is identical, regardless of the barista's experience.

Designed for the Modern Barista

The collaboration respects the heritage of both brands. The scale retains the Acaia Lunar’s signature water-resistant, anodised aluminium body, ensuring it can withstand the steam and spills of a busy café or home kitchen. Meanwhile, the software integration reflects La Marzocco’s commitment to making professional-grade technology accessible to the home enthusiast.

Why It Matters

For busy specialty environments and home perfectionists alike, the Brew-by-Weight scale solves two critical problems: waste and variability. By ensuring every shot hits the exact yield, cafes reduce the need for "sink shots," while enthusiasts can finally stop worrying about over-extraction or late manual shut-offs.

This collaboration stands as a testament to the future of coffee, where precision, data, and traditional craftsmanship come together to elevate every cup.

Acaia Espresso Scales: Choosing Between the Lunar 2021, Umbra, and Brew-by-Weight

When it comes to high-end espresso preparation, Acaia has evolved from a single iconic scale into a sophisticated ecosystem of specialized tools. Understanding the differences between the Lunar 2021, the Umbra Lunar, and the La Marzocco Brew-by-Weight (BbW) scale is key to choosing the right workflow for your bar.

1. Acaia Lunar 2021: The All-Rounder

The Lunar 2021 is the definitive standalone espresso scale. It is designed for baristas who want all their data—weight, time, and flow rate—contained in one robust, visible unit.

• Key Feature: The Real-Time Flow-Rate Indicator. This LED bar allows you to see exactly how many grams per second are hitting the cup, helping you spot channeling instantly.

• Best For: Enthusiasts and professionals who need a versatile scale that works on any machine and offers immediate visual feedback.

• Hardware: USB-C charging, 30–40 hour battery life, and high-visibility LED display.

2. Acaia Umbra Lunar: The Minimalist

The Umbra is a radical departure from traditional design. It has no built-in display, appearing as a sleek, solid block of anodised aluminium. It is designed to be "felt but not seen."

• Key Feature: Magic Relay technology. Instead of showing weight on its own body, it wirelessly beams the data to a paired Acaia Pearl S or a smartphone.

• Best For: Minimalist coffee bars or "no-screen" drip trays. It is also more energy-efficient and durable because it lacks the fragile glass/LED window of a traditional scale.

• Workflow: Typically used in a "Dual Display" setup where a Pearl scale on the bench shows the weight being measured by the Umbra on the drip tray.

3. La Marzocco x Acaia: Brew-by-Weight (BbW)

This is not a standalone scale in the traditional sense; it is a connected instrument developed exclusively for the La Marzocco Linea Mini, Micra, and GS3.

• Key Feature: Machine Integration. Unlike a standard Lunar that just tells you the weight, this scale talks directly to the La Marzocco electronics. When the scale hits your target weight (e.g., 36g), it sends a signal to the machine to automatically stop the shot.

• Best For: Owners of La Marzocco home machines who want "set and forget" volumetric precision. It includes a "predictive drip algorithm" that accounts for the coffee still in the air after the pump stops.

• Hardware: Identical in build to the Lunar 2021 but runs exclusive La Marzocco firmware. Note: As of 2024, standard Lunar 2021 scales can be upgraded to BbW firmware via a paid digital license from Acaia.

Which one do you need?

• Choose the Lunar 2021 if you want the best all-around scale that provides immediate, easy-to-read data for any espresso machine.

• Choose the Umbra Lunar if you want a clean, "invisible" aesthetic on your machine and already own (or plan to own) an Acaia Pearl to act as your display.

• Choose the Brew-by-Weight Scale if you own a La Marzocco and want the machine to handle the precision of stopping the shot for you, ensuring every espresso is identical without you watching the clock.

About Acaia

Founded in 2014, Acaia was born from a simple yet ambitious mission: to merge laboratory-grade technology with beautiful, minimalist design for the specialty coffee community. The company first gained global attention with the successful Kickstarter launch of the Acaia Pearl in 2013, which set a new standard for what a coffee scale could be. Acaia believes that the future of coffee equipment lies in the seamless integration of hardware and software, a philosophy evident in their suite of Bluetooth-connected apps and firmware-upgradeable devices.

Acaia is more than just a manufacturer; it is a brand deeply rooted in quality and community. Every product is hand-built using high-quality components designed to withstand the rigours of a commercial environment while maintaining an aesthetic that elevates any coffee bar. By collaborating with manufacturers and listening to feedback from baristas worldwide, Acaia continues to push the boundaries of extraction control, transforming the ritual of brewing into a precise and repeatable science.