Wilger Electronic Flow Monitoring System

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 patented flow meter and stabilizing jet design, the EFM system can maintain better accuracy over a much larger flow range than traditional flow meters

Wilger electronic flow monitoring system

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

More Info

Electronic Flow Meter Sensors


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.

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: 0.004 – 0.12 US GPM flow range
Red Jet: 0.10 – 0.31 US GPM flow range
Tan Jet: 0.18 – 0.98 US GPM flow range
Black Jet: 0.57 – 1.53 US GPM flow range


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.

Ors Metering Orifices

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

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

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


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.



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