Improving sensor operation & efficiency

The Atlas hardness sensors:

  • Initiate regeneration based on hardness breakthrough
  • Monitor softener operations (including regeneration)
  • Identify & report problems

The Atlas will be installed on the water pipe leaving a water softener.  As the water softener’s resin is exhausted, calcium will begin to appear in the softened water. The Atlas is able to detect the initial breakthrough of calcium and will send a signal to the softener control valve system indicating regeneration is needed.

sensor products

The hardness sensor in development will allow the greatest savings in salt and water during regeneration, because the sensor is capable of detecting the exact time that regeneration is needed.


Residential model:

  • We envision utilizing a fixed set point for sending a signal to regenerate the water softener.

Industrial model

  • Industrial water treatment involves more flexibility in regeneration timing. The industrial hardness sensor is capable of relaying the relative amount of hardness detected and will allow for high flexibility of regeneration timing by advanced controls.

atlas regeneration technologies PRODUCTS

water softener operation with hardness sensor

Water softeners are comprised of three main components: a resin tank, a brine tank, and a regeneration control system. Hard water, which contains ions of dissolved calcium, passes through a tank filled with resin beads. These beads have sodium ions that are exchanged for calcium and produce soft water until the resin is saturated with calcium. At this point, low levels of calcium will be present and the hardness sensor will send a signal indicating  regeneration is required. The resin is regenerated by drawing a brine solution from the brine tank into the resin tank to displace the minerals in the resin and recharge the resin with sodium ions. A high concentration of salt is needed for regeneration to overcome the strong binding of hardness (e.g. calcium and magnesium) ions to the resin. Tap water is used to displace and rinse the brine from the resin. A waste stream containing a mixture of salt and minerals removed during the original softening process is sent to a drain for disposal.


Installation of an Atlas hardness sensor on a softener is estimated to reduce salt and water consumption dramatically. Another benefit of measuring the actual hardness level in the product water is that our direct-detection method allows for variability of incoming water quality.