What Comes With Your Metra Optical Sorter?

14 October 2026

Planning an optical-sorter purchase means knowing what comes with the machine and what your farm must provide. Metra Grain Cleaner provides a complete package that includes an air compressor, air dryer, and air tank. Matching that package to the selected model helps clarify electrical needs, connections, and installation responsibilities.

Compressed air does the ejecting

An optical sorter detects optical differences in incoming material, then uses compressed air to eject the material selected for rejection. The optical system identifies what to separate; the compressed air carries out that separation.

That makes compressed air part of operating the sorter—not another grain-cleaning stage.

Metra offers color sorters that can be configured for different grains according to color. Its team helps select equipment and settings for your material, connecting the sorting job to the machine choice.

Three supporting components are listed as included

Metra’s optical color sorter page lists these components as included without additional cost:

– Air compressor
– Air dryer
– Air tank

The component list identifies the supporting equipment offered with the sorter. The selected model’s requirements determine what needs to be reviewed for your farm’s setup.

Air requirements differ by sorter

Metra publishes different air-pressure and air-consumption specifications for different models. Two examples show why the selected model matters:

| Sorter | Listed air pressure | Listed air consumption |
|—|—|—|
| 6AS-68 | 0.4–0.6 MPa | Below 35 CFM |
| 6AS-680 | 0.6–0.8 MPa | Below 215 CFM |

CFM means cubic feet per minute, a measure of airflow. MPa is a pressure unit.

These are manufacturer-listed sorter specifications, not ratings for the included compressor, dryer, or tank. The specifications and configuration of this auxiliary equipment are individually tailored to each Metra Grain Cleaner optical sorter model, ensuring optimal compatibility and performance.

Match the package to the farm

Metra Grain Cleaner evaluates each customer’s specific needs and existing infrastructure to recommend the most suitable equipment and configuration. Start with a simple description of your crop, the material you want separated, and where you intend to operate the sorter.

Confirm current package terms for the selected model and order, and work through these questions with Metra:

– What compressor, dryer, and tank are supplied with this model, and what are their ratings?
– What electrical supply and air connections will this package require at our location?
– Which installation tasks will Metra handle, and which will the farm need to arrange?

You do not need to design the air system before making that first call. Metra Grain Cleaner can review your intended setup as part of helping you choose equipment.

See the sorting job and discuss the setup

At a representative sample test or arranged warehouse demonstration, ask Metra to explain how selected material is ejected and how the proposed model’s air package would fit your installation.

Explore Metra optical color sorters and contact Metra at 701-515-0488 to discuss your grain, sample testing, or an arranged warehouse visit. Coordinate sample handling or a visit with Metra before shipping grain or traveling.