Compact Float Switch: Agma – what happens when you cross a float switch, a rail and a magnet?
If you require a reliable solution for a shallow tank, such as an F-Line or similar, or installing in a restricted space inside a regular tank, then, the Agma by Mac3 float switch is an excellent option to consider.
The Agma series (22 and W) are magnetically operated vertical float switches. Simply put, a magnet (attached to the float) moves vertically on a rail. The magnet closes the sealed microswitch inside the top or head of the unit.
Of course, there is one limitation to using magnets. The Agma cannot be used in fluids that contain solids that are themselves magnetic (iron sand, nickel etc.) as these will interfere with the movement of the float arm.
The Agma Compact Float Switches are available in two different configurations:
Agma 22 – designed for clean water applications only.
Agma W – is primarily designed for dirty water applications and can be used in clear water too.
Both the Agma 22 and W are available with either a 10m cable or 25cm cable ends (for mounting directly to a pump or controller). Installing the Agma into a system removes the requirements of selecting the correct cable type and length for the installation – which, if incorrect, can cause issues with tangling or hanging of the float switch.
In terms of usage, the Agma is ideally suited for use with a dewatering pump – as seen in this OEM mounted example (right) though with the correct connections (and a little improvisation) a similar setup could be fabricated for almost any pump.
Overall, the Agma is an interesting idea and certainly something that will have some people scratching their heads (at least until they get their hands on it).
One to keep in mind when working with small or crowded tanks, or when installing a sump pump system.
For more information
Contact Jim, our Mac3 Technical lead. Jim and Tom have over 25 years of experience in Water Control Systems.
