Wilger Electronic Flow Monitoring System

Electronic Flow Monitoring System Example Assembly. Given the system is modular, they can make systems from anywhere from 1-196 (or more) flow outlets.
Electronic Flow Monitoring System Example Assembly. Given the system is modular, they can make systems from anywhere from 1-196 (or more) flow outlets.

The electronic flow monitoring system takes Wilger row-by-row flow meters and pairs it to a manufacturer’s monitor or tablet to provide accurate monitoring for both blockage and flow rate irregularity.

Similar to the visual ball flow indicators, it shows variation in flow that might be caused by blocked lines, incorrect orifices, or blown product hoses, but it provides the added benefits of knowing the actual flow (not just relative) for each row, as well as having it conveniently located on a screen in your cab.

With a patent-pending flow meter and stabilizing jet design, the EFM system can maintain better accuracy over a much larger flow range than traditional flow meters.

The EFM system is completely available as a retro-fit option, and is especially easy to add to an existing visual flow indicator system.

Example EFM System Costing

As there are many ways to configure an electronic flow monitoring system, for base pricing (without outlet fittings). Note the package cost does get less expensive with larger configurations, as it already includes the base-package’s ECU cost.

16 Channel/Outlet Kit: $238/Row ($3,809.36 CDN Total)


ECU KIT (Main ECU, battery harness, antenna, and harness terminator), 16CH Node Kit (16CH Node Harness & Node, and sensors), 4x 4-Outlet Manifolds (Plumbing Manifolds, 16 flow meters, 16 check valves)

32 Channel/Outlet Kit: $180/Row ($5,784.52 CDN Total)

48 Channel/Outlet Kit: $162/Row ($7,759.68 CDN Total)

64 Channel/Outlet Kit: $152/Row ($9,734.84 CDN Total)

80 Channel/Outlet Kit: $146/Row ($11,710.00 CDN Total)

Example for Dual Shank/Product Monitoring. As the same system can monitor up to 2-3 different products or flow rates, the amount of rows used in a dual shank/product application would simply be added up to make a single system.

(48 Row Dual) 96 Channel/Outlet Kit: $142/Row ($13,685.16 CDN Total)

(72 Row Dual) 144 Channel/Outlet Kit: $136/Row ($19,610.64 CDN Total)

Max Operating Pressure 100 PSI (7BAR)
Max Operating Flow Rate Up to 1.5 us gpm (for standard flow bodies)
Max Operating Temperature 185°F / 85°C
O-ring Seal Materials FKM or VITON®
U-clip Material Stainless Steel
ORS Fitting Material Glass-reinforced Polypropylene
Flow Meter Body Material TPX (Polymethylpentene) .

TPX Compatibility – plastic compatibility guide is not developed by Wilger, and cannot be guaranteed for accuracy

Electronic Flow Meter Sensors

Electronic Flow Meter for Row-by-Row Flow Monitoring on an air drill, corn planter or seeder.

Wilger’s Row-By-Row Flow Meters

The compact flow meter is different than your traditional flow meter in a lot of ways.


With the TPX polymer body, you have a great deal of chemical resistance and any residue or chemical have a very tough time sticking to it at all, meaning residue has a tough time building up within the flow meter moving components.


Often flow meters are literally used until they start to wear, and then replaced. Physically being able to maintain or replace components is virtually impossible, or impractical. As the wilger flow meter is completely accessible, it allows for both easy and convenient cleaning (if req’d), but it also allows for the paddle wheel to be replaced if excessive wear begins to effect accuracy.

Patented Stabilizing Jets:

The flow meters have 4 different sizes of stabilizing jets that maintain better accuracy over the operating flow range of the flow meter.

Green Jet: 0.04 – 0.12 us gpm flow range
Red Jet: 0.10 – 0.31 us gpm flow range
Blue Jet: 0.18 – 0.98 us gpm flow range
Black Jet: 0.57 – 1.53 us gpm flow range

EFM System Harnessing & Electronics

System Harnessing & Electronics

Since the flow meter’s output is a raw pulse frequency, it is compatible with almost any of today’s application technology configurations (ISOBUS, etc.). It only requires the front-end and application to pull in and display the information.

As such, we are continuing work with OEM system manufacturers and welcoming other system manufacturers to pull the EFM sensor feedback into their existing monitors and systems to be able to provide more value to their users.

We offer our current standard/retrofit options, using Agtron’s electronics and controllers, which are highly regarded for their use in seed-blockage monitors. The same quality of electronics is available immediately for use to build an EFM system.

O-ring Seal (ORS) Metering and Plumbing Components

ORS Metering Orifices

ORS metering orifices with ISO Color coding for flow rate

O-ring seal metering orifices are accurate and large enough to make them easy to handle, so switching rates is easy.

Custom hole-size orifices and ISO-color coded orifices are available to match any rate required.

ORS Check Valves

#20551-00 ORS to ORS Check Valve Body for ORS Manifolds and Flow Indicators

A variety of check valve options are available to act as a drip-check, but also keep stable back-pressure on the flow meter itself.

360° Range of Motion

#20574-00 4 outlet O-Ring Seal manifold

All O-ring sealed fittings can be spun 360° without fear of leaking of pulling out.

This makes installation easy as the fittings pivot to where you need them to point.

Chemical Resistance

Electronic Flow Meter for Row-by-Row Flow Monitoring on an air drill, corn planter or seeder.

Find the below plastic compatibility chart, which compares TPX to other commonly used clear plastics like PVC.
TPX outperforms all other clear polymers in chemical resistance, cold/hot temperature rating, and more.

TPX & Other Plastic Compatibility

Related News or Videos

As a pro-tip for assembling a flow indicator system, using a small amount of lubricant, such as liquid silicone on the o-ring when fitting any ORS components together makes it a breeze.

The clear plastic used to make all Wilger flow meter bodies is very special. It provides the greatest amount of chemical resistance, while maintaining the best clarity at the same time.

Over time, as with all plastic, it deteriorates in long term exposure to UV (such as the sun). To combat this and to extend the life of the flow indicator columns, Wilger uses a UV inhibitor, but to further extend the clarity of the plastic flow indicator columns, it is best to cover them up whenever in use.

Having a flow meter bodies covered from UV will significantly increase the lifespan and clarity of the plastic.

Contact Wilger

Have a question? Find a broken link on the website and need more information? Email us directly, and we can personally help you out.

Not readable? Change text. captcha txt