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The ZK840 counting scale offers exceptional accuracy and flexibility. A fully programmable counting scale, with database inventory control and a suite of built-in applications, this high resolution touch-screen scale has been designed with flexibility, ease of use and precision in mind.

Exceptional Flexibility
At its simplest, the ZK840 can be used as a general high resolution weighing and counting scale. A host of applications, including checkweighing, with inventory control, balance and density weighing, recipe filling, grading and pick list programs are available for use and can be fully customized if required.

Fully configurable solution
The sleek design and user-friendly features provide an ideal platform to build a solution that has been specifically programmed and tailored to your business - with no need to compromise.

Touch screen graphical weight display
The 5.3” x 2.75” (135mm x 75mm) touch screen graphical weight display offers ease of use and extreme durability. Graphics and text such as user prompts result in a more intuitive interface, allowing users to navigate applications using the touch screen.

Unrivaled Precision
An ideal counting scale for weighing micro-components or large items, the ZK840 features highly accurate Quartzell™ weighing technology. With 100,000 divisions (non legal for trade) or 10,000 divisions (legal for trade) and a 1 billion internal count resolution, the scale offers unrivaled precision.

Unrivaled Strength
A robust die-cast enclosure provides 1100% overload protection and protects the cell from shock and dropped loads, ensuring accuracy and repeatability in even the most extreme conditions.


Technical specs

Product Weight Available Capacities Resolution Size Variants

0.5kg - 80kg

500g - 80,000g
0.5kg - 80kg


- 235mm x 305mm with a 156mm dia top platter
- 305mm x 350mm 5kg to 35kg
- 305mm x 350mm 5kg to 80kg


Counting Scale with Inventory Control

Created to adapt to most inventory control processes, the ZK840 counts and samples components quickly and accurately, speeding up processes and improving efficiencies and accuracy when counting large numbers of identical parts.

Built-in database inventory control packages store around to 5000 piece weights and provide business critical real-time stock data and statistical analysis that will help improve product line efficiency. The option to link to PLU Lookup, our external database system, enables users to capture, control and manage data for hundreds of thousands of parts on 32 linked scales. Find out more about the counting scale application. 

Checkweighing and QA Management Application: With clear under, over and accept weight bands providing a simple visual indication of whether the package falls within tolerance, the ZK840 is ideal for fast and efficient checkweighing or end-of-line quality control. Find out more about the Checkweighing application  

Balance and Density Weighing Application: With over 1 billion internal counts and a readability of over 3.5 million divisions the ZK840 offers precise lab-balance accuracy, density formulation, percentage weighing and percentage recipe on an industrial scale. The scale conforms to the Good Laboratory Practices (GLP) quality system management. Find out more about the Balance application. 

Grading Application: The ZK840 grading application and graphical display give users a clear indication of the grade and location of each item when segregating by weight. Comprehensive data such as running total per location, last weight/weight band and Parts-per-minute (PPM) provides a complete overview of the production process.Find out more about the Grading application. 

Pick List Kitting Application: Combines filling, counting, checkweighing and QA applications to give an operator step by step picking instructions as on-screen prompts. On screen validation prevents steps being missed, helping to reduce common picking errors and ensure that the correct parts and quantities have been picked. Find out more about the Pick List Kitting application. 

Service and support

The new approach to servicing weighing equipment

Choose market-leading comprehensive cover. Or ground breaking, fully-inclusive with up to 99% uptime guaranteed. Introducing new, clear, unrivalled service levels for critical weighing operations – only from Avery Weigh-Tronix.


WeighCare Total™ and WeighCare™

Comprehensive, all-inclusive service cover, backed by a groundbreaking uptime guarantee, for heavy duty, integrated scales up to 5-tonne capacity.

Learn more about WeighCare Total™ and WeighCare™


ZK840 Counting Scale Brochure

ZK840 Specifications

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