Acaia Pearl Model S 2022 – Professional Pour-Over Coffee Scale

⚖️ More Than a Scale – A Brewing Coach on Your Counter

The Acaia Pearl Model S 2022 is built for coffee lovers who want more than weight and time.

Designed primarily around manual filter brewing, it combines professional weighing performance with:

⚖️ 0.1 g readability

📦 3,000 g capacity

💧 Real-time flow-rate monitoring

⏱️ Intelligent brew timers

📚 Interactive Brewguide recipes

🔊 Voice, melody and sound notifications

📱 Bluetooth 5.0 connectivity

🔋 Rechargeable USB-C power

in a generously sized 160 × 160 mm platform that comfortably supports V60s, servers, AeroPress setups and larger brewing vessels.

This is not just a smaller espresso scale made larger.

The Pearl Model S is designed around:

understanding and repeating your brew.

📋 Quick Menu

• ⚖️ 0.1 g readability
• 📦 3,000 g maximum capacity
• 💧 Real-time flow-rate display
• ⏱️ Timer + auto-start modes
• 🔄 Eight brewing modes
• 📚 Dedicated Brewguide Mode
• 📱 Brewguide app integration
• 🔊 Sound & voice notifications
• 🎵 30+ notification melodies
• ⏳ Custom Countdown Timer
• 🔉 Adjustable volume
• ☀️ Optimised display readability
• 🔵 Bluetooth 5.0
• 🔋 2,200 mAh rechargeable battery
• ⚡ USB-C charging
• 📐 160 × 160 × 32 mm
• ☕ Excellent for V60, ORIGAMI, Pulsar & AeroPress
• 🧪 Useful for training and recipe development
• 👃 CoffeeNose brewing tips
• 🫘 WB.coffee filter-coffee pairings
• 🎓 Pour ’n Drip workshops

⚖️ 0.1 g Precision – Up to 3 kg

The Pearl Model S combines:

0.1 g readability

with a generous:

3,000 g maximum capacity.

That makes it particularly useful for manual filter brewing where the scale may need to support:

☕ Server

💧 Brewer

📄 Filter

🫘 Coffee

+

💧 500–1,000+ g brewing water.

A smaller espresso scale can technically weigh a V60.

But the Pearl's larger platform is far more comfortable when using:

☕ Carafes

🌸 Large ORIGAMI brewers

🚀 Pulsar setups

🌀 AeroPress

☕ Batch-style manual brews.

📐 160 × 160 mm Brewing Platform

Dimensions:

160 × 160 × 32 mm

with a weight of approximately:

620 g.

The larger square platform provides a much more stable base than a tiny espresso scale when you're pouring water over a brewer and carafe.

For manual coffee brewing:

bigger is often better.

For squeezing underneath an espresso group?

The Acaia Lunar is the more logical choice.

👃 CoffeeNose – Pearl S vs Lunar

This distinction is simple.

☕ Lunar

Designed around:

espresso.

Small.

Thin.

Water-resistant.

Fits on the drip tray.

💧 Pearl Model S

Designed around:

manual brewing.

Larger platform.

Higher 3 kg capacity.

Brewguide.

Flow-rate tools.

Voice and sound guidance.

CoffeeNose choice 👃

If your day starts with:

18 g → 40 g espresso

choose Lunar.

If it starts with:

15 g → 250 g V60

choose Pearl.

💧 See Your Flow Rate in Real Time

One of the most useful Pearl S features is:

flow-rate monitoring.

The scale can display how quickly water is being added in:

grams per second.

That turns something normally described as:

“pour slowly”

into an actual measurable variable.

👃 Why Flow Rate Matters

Imagine two V60 brews.

Both use:

15 g coffee

and:

250 g water.

But one brewer pours at:

3 g/s

while another pours at:

8 g/s.

Same recipe on paper.

Potentially very different:

🌀 Agitation

💧 Bed movement

⏱️ Contact time

☕ Extraction.

Flow rate helps explain why two apparently identical recipes can taste completely different.

📚 Brewguide Mode

This is where the Pearl Model S becomes much more than a normal scale.

Acaia's Brewguide app allows you to:

📲 Download recipes

💾 Save recipes

🔗 Share brewing guides

☕ Discover recipes from roasters

📟 Send the recipe directly to the scale.

The Pearl then walks you through the brew:

step by step

on its own dot-matrix display.

For example:

00:00

Pour to 50 g.

00:40

Continue to 150 g.

01:20

Pour to 250 g.

Instead of continuously looking at:

📱 your phone

the instructions appear directly on:

the scale.

👃 CoffeeNose – Brewguide Is Useful for Training

We particularly like Brewguide for:

🎓 Workshops

☕ Café recipes

👥 Shared household brewing

🧪 Recipe comparison.

Once you find a recipe that works, you can turn:

“pour roughly like this”

into:

a repeatable sequence.

But remember:

A recipe is a starting point.

Coffee changes with:

🫘 Age

⚙️ Grinder

💧 Water

🔥 Roast

🌡️ Temperature.

So don't become a slave to somebody else's Brewguide.

Taste.

Adjust.

Save the better recipe.

🔄 Eight Brewing Modes

The current Pearl Model S offers eight core modes.

1️⃣ Weighing Only

The simplest mode.

Displays:

weight.

Nothing more.

Perfect for:

🫘 Weighing beans

⚙️ Dosing

☕ General coffee prep.

Sometimes a smart scale should simply:

be a scale.

2️⃣ Dual Display

Shows:

timer + weight

together.

This is probably the most useful everyday mode for many brewers.

You control the workflow manually while still seeing both main brewing variables.

3️⃣ Pour-Over Auto-Start

Designed specifically for manual filter brewing.

The Pearl detects when water begins flowing into the brewer and:

automatically starts the timer.

When you remove the brewing setup, it can display the final beverage weight.

Excellent for:

💧 V60

🌸 ORIGAMI

☕ Flat-bottom brewers.

4️⃣ Portafilter Mode

Place a portafilter on the scale.

The Pearl can assist with:

⚖️ taring

and:

🫘 weighing the coffee dose.

Useful if the Pearl is serving double duty at an espresso station.

Its larger platform is actually very convenient for balancing a portafilter.

5️⃣ Espresso Mode

Yes, Pearl can also handle espresso workflows.

Useful for:

⚖️ Dose

☕ Beverage weight

⏱️ Shot time.

But its physical size means we still consider:

Lunar

the better dedicated espresso scale.

Pearl is the:

all-round brewing workstation.

6️⃣ Flowrate Mode

Displays:

⚖️ Weight

⏱️ Time

💧 Flow rate

to help you understand exactly how your pouring speed changes during brewing.

This is one of our favourite modes for:

🎓 training

and:

🧪 recipe development.

7️⃣ Brewguide Mode

Load a recipe through the Brewguide app and allow the scale to guide you through each brewing phase.

Great for:

☕ Repeating successful recipes

🎓 Training

👥 Sharing brewing techniques.

8️⃣ Countdown Mode

Exclusive to the 2022 generation, Countdown Mode gives you a configurable timer with:

3 presets

and:

more than 30 notification tones.

Useful for:

🌀 AeroPress steeping

☕ French press

🍵 Tea

🧪 Sensory exercises

⏱️ Brewing stages.

🔊 Sound & Voice Notifications

Another major difference between the 2022 Pearl S and the older model is:

audible guidance.

The scale can announce:

⚖️ Weight intervals

and:

⏱️ Time intervals

using sound or voice.

Acaia specifies notifications at approximately:

every 10 seconds

for time

and:

every 20 g

for weight.

This means you can focus more attention on:

💧 the kettle

and:

☕ the coffee bed

instead of staring constantly at numbers.

👃 CoffeeNose – Surprisingly Useful

At first:

talking coffee scale

sounds slightly ridiculous.

Then you try pouring while:

💧 controlling flow

⭕ watching circles

🌀 monitoring agitation

🌡️ thinking about temperature

and realise:

not looking at the display is actually useful.

Especially during training.

🎵 More Than 30 Melodies

The Pearl S 2022 contains:

30+ notification tones

which can be assigned to Countdown Timer presets.

There is even a hidden music mode that can play the tones consecutively.

Essential to coffee quality?

No.

Fun?

Absolutely.

🔉 Adjustable Volume

The 2022 generation also adds:

adjustable audio volume.

You can:

🔊 Turn it up

🔉 Reduce it

🔇 Switch it off completely.

Useful in:

☕ Busy cafés

🏠 Quiet kitchens

🎓 Classrooms.

🔵 Bluetooth 5.0

Pearl S 2022 upgraded from the original scale's Bluetooth 4.0 to:

Bluetooth 5.0.

This provides the wireless connection required for:

📚 Brewguide

📱 Acaia applications

⚙️ Firmware updates and settings.

📱 Acaia Apps

Acaia supports several apps for different purposes.

For Pearl Model S, the most important is:

Brewguide

which is designed specifically around the Pearl S platform.

Use it to:

📚 Browse recipes

📲 Transfer recipes

🔗 Share Brewguides

⚙️ Adjust certain scale settings.

Other Acaia apps can be useful for more detailed:

📊 Brewing data

and:

📝 Logging workflows.

⚡ USB-C – Finally

The older Pearl Model S used:

Mini-USB.

The 2022 revision switched to:

USB-C.

A small change.

But a very welcome one.

One less ancient cable living permanently in your coffee drawer.

🔋 2,200 mAh Battery

Inside is a rechargeable:

3.7 V / 2,200 mAh lithium-ion battery.

Acaia specifies battery life of approximately:

16–40 hours

depending on:

💡 Display brightness

🔊 Audio use

📱 Bluetooth

⚙️ Power-saving settings.

For normal home brewing that usually means:

charge occasionally

rather than:

charge daily.

☀️ Optimised Display Visibility

Pearl Model S uses a:

dot-matrix LED display

rather than the simpler LED display used on the standard Pearl.

The richer display is necessary because Pearl S can show:

📚 Brewguide instructions

💧 Flow information

⏱️ Multiple data points

🔊 Menu options.

Acaia also optimised brightness for better visibility in brighter environments.

Useful for:

☀️ Outdoor brewing

☕ Café counters

🏆 Competitions.

🆚 Pearl Model S vs Standard Pearl

Both are excellent professional brewing scales.

But they target slightly different users.

Official current specifications support those differences.

CoffeeNose choice 👃

Want:

a brilliant straightforward scale?

Pearl.

Want:

recipes, voice, Brewguide and deeper training features?

Pearl S.

🆚 Pearl S vs Lunar

Pearl S

Best for:

💧 Pour-over

☕ Batch-style manual brewing

🌀 AeroPress

🎓 Training

📚 Brewguide.

Lunar

Best for:

☕ Espresso

💦 Wet drip trays

📐 Restricted clearance

⚡ Fast shot workflow.

If you own:

both,

you have probably reached the point where nobody can reasonably pretend coffee is still just a hobby.

💧 Perfect for V60

Pearl S is in its natural habitat underneath a:

Hario V60.

Try:

🫘 Coffee

15 g

💧 Water

250 g

🌡️ Temperature

94°C

and monitor:

⚖️ Total water

⏱️ Brew time

💧 Flow rate.

Then save the recipe once you find the combination that tastes best.

🌸 Excellent for ORIGAMI

The larger platform comfortably holds an ORIGAMI plus server.

Use the flow-rate display to experiment with:

💧 Faster pours

versus:

💧 slower pours

while keeping:

⚖️ Coffee dose

💧 Total water

🌡️ Temperature

the same.

That turns pouring technique into something measurable.

🚀 Excellent with NextLevel Pulsar

The Pearl S is also a natural companion for:

NextLevel Pulsar / Pulsar Mini.

Now you can control:

⚖️ Dose

💧 Water

⏱️ Contact time

🚰 Valve behaviour

⚙️ Grind.

For brewing experiments, the generous platform and flow data are particularly useful.

🌀 AeroPress

Countdown Timer Mode makes Pearl S excellent for:

AeroPress.

Set:

1:30

or:

2:00

as a preset and get an audible signal when it's time to press.

No phone timer required.

☕ Moccamaster

A 3 kg maximum capacity means Pearl S can also be useful for:

☕ larger coffee doses

💧 brewing-water preparation

🫘 batch-brew recipes.

Use:

60 g coffee

to:

1,000 g water

as a sensible starting ratio.

Then adjust according to taste.

⚙️ Comandante C40

If you're investing in a Pearl S because you care about:

💧 Flow rate

⚖️ Ratio

⏱️ Time

then:

grind quality

is the next major variable.

A Comandante C40 makes a natural manual-brewing partner.

Use:

⚙️ consistent grind

⚖️ accurate dose

💧 measured water

and now your recipe becomes genuinely repeatable.

⚙️ Fellow Opus 2

Prefer electric grinding?

The Fellow Opus 2 provides a versatile setup for:

💧 Filter

🌀 AeroPress

☕ Espresso.

Pair it with Pearl S and you have one grinder and one scale covering an enormous range of coffee preparation.

🫖 Precision Kettle

A flow-rate scale becomes much more useful when your kettle lets you control:

the flow.

Pair Pearl S with a precision kettle such as:

🫖 Fellow Stagg EKG

💧 Hario pouring kettle

🔥 Another controlled gooseneck.

The scale tells you:

how quickly you're pouring.

The kettle lets you:

do something about it.

💧 Brewing Water

Once:

⚖️ dose

⚙️ grind

💧 water quantity

⏱️ time

🌡️ temperature

are repeatable, water chemistry becomes increasingly obvious.

Explore:

💧 Lotus Water Drops

⚗️ Controlled mineral recipes

and compare the same coffee with different brewing water.

The Pearl S makes it much easier to keep everything else constant.

🍓 Coffee Pairing – FJ Fruity & Juicy

A perfect coffee for ratio experiments:

FJ – Fruity & Juicy

Try:

15 g → 225 g

1:15

versus:

15 g → 255 g

1:17

and compare:

🍓 Fruit intensity

🍯 Sweetness

👅 Body

✨ Clarity.

🌸 FF – Fruity & Floral

Want to use flow-rate data more deliberately?

Try:

FF – Fruity & Floral.

Experiment with:

💧 Slow, calm pours

versus:

🌀 higher-flow, higher-agitation pours.

Look for changes in:

🌸 Aromatics

🍑 Fruit

🍋 Acidity

🍯 Sweetness.

🌍 Single-Origin Coffee

The Pearl S becomes most valuable when you're brewing coffee worth documenting.

Try:

🍓 Kenya Currant Crush

🌸 Ethiopia Guji Majesty

💎 Guatemala Geisha – Finca Inferno

🍊 Fernando Díaz Orange Bourbon

🍍 Pineapple Express

🌍 Changing WB.coffee limited editions.

When you find the sweet spot:

save the recipe.

That is what Brewguide is for.

🎓 Pour ’n Drip – Filter Coffee Workshop

Pearl S gives you:

data.

Our Pour ’n Drip workshop at Amsterdam Coffee Lab helps you understand:

what the data means.

Explore:

⚙️ Grind size

⚖️ Brew ratio

💧 Flow rate

🌀 Agitation

🌡️ Temperature

⏱️ Contact time

📄 Filter geometry

👅 Extraction.

A scale should help you learn.

Not merely make the coffee station look more technical.

🎓 Press It Real Good – AeroPress

Use Pearl S Countdown Mode during our:

Press It Real Good

AeroPress workshop.

Compare:

🌡️ Different temperatures

⚙️ Grind sizes

⏱️ Steep times

🌀 Agitation

⚖️ Ratios.

Then save your favourite recipe.

🔧 Technical Specifications

Product: Acaia Pearl Model S

Generation: 2022 / current USB-C generation

Models: PS003 / PS004

Colours: White / Black

Dimensions: 160 × 160 × 32 mm

Weight: 620 g ± 5 g

Maximum capacity: 3,000 g / 105.82 oz

Minimum weight: 0.1 g

Readability: 0.1 g

Repeatability: 0.1 g

Units: grams / ounces

Display: Dot-matrix LED

Connectivity: Bluetooth 5.0

Battery: 3.7 V / 2,200 mAh rechargeable lithium-ion

Battery life: Approx. 16–40 hours

Power: 5 V / 500 mA

Charging: USB-C

Material: PC.

🔄 Current Modes

• ⚖️ Weighing Only
• ⏱️ Dual Display
• 💧 Pour-Over Auto-Start
• ☕ Portafilter
• ☕ Espresso
• 💧 Flowrate
• 📚 Brewguide
• ⏳ Countdown.

📦 Inside the Box

Acaia currently specifies:

⚖️ Acaia Pearl Model S scale

🔥 Round heat-resistant coaster

⚡ USB Type-C charging cable.

✅ Perfect For

The Pearl Model S is particularly suited to:

✔️ Serious filter-coffee brewing

✔️ V60

✔️ ORIGAMI

✔️ Pulsar

✔️ AeroPress

✔️ Manual batch brewing

✔️ Coffee professionals

✔️ Roasters

✔️ Brewing trainers

✔️ Coffee competitions

✔️ Recipe development

✔️ Home brewers who enjoy data

✔️ Anyone wanting Brewguide

✔️ Users who benefit from sound or voice guidance.

❤️ Why We Like It at WB.coffee

There are cheaper scales that can tell you:

15.0 g.

And:

250.0 g.

If that's all you need:

buy one of them.

The Pearl S becomes interesting when you want to understand:

what happened between those two numbers.

How fast did you pour?

When did you pause?

How repeatable was the sequence?

Can another person reproduce the same brew?

Can you save the recipe?

Can the scale walk a student through it?

That is where:

💧 flow rate

📚 Brewguide

🔊 audio guidance

⏳ Countdown presets

📱 Bluetooth

start to make sense.

For us, its strongest use is not simply:

making coffee.

It is:

learning about coffee.

CoffeeNose verdict 👃

If you primarily need an accurate scale:

buy the normal Pearl.

If you want a scale that can become part of:

🎓 training

🧪 experimentation

📚 recipe sharing

💧 pouring practice

the Pearl Model S is worth the extra complexity.

And unlike app-only scales, it still remains a very capable standalone scale when you don't feel like connecting your phone.

Use the numbers to become consistent.

Use your palate to decide whether that consistency is worth repeating.

📍 Acaia & Filter Coffee Equipment in Weesp

At WB.coffee / Amsterdam Coffee Lab in Weesp, combine your Pearl Model S with:

⚙️ Premium filter grinders

🫖 Precision pouring kettles

💧 V60 & ORIGAMI

🚀 NextLevel brewers

🌀 AeroPress

📄 Premium filter papers

💧 Coffee-water tools

🫘 Fresh WB.coffee blends & single origins

🎓 Pour ’n Drip workshops

🌀 AeroPress workshops

👃 Sensory training

👅 Coffee tastings

🥡 Specialty coffee from the tasting menu @ Amsterdam Coffee Lab

Measure the brew.

Understand the variables.

Then taste the result.