Electric and magnetic fields
WEHA combines electrical and pulsed magnetic fields to address different water and system conditions.
Operating principle
One control unit. A coil system tailored to the pipe.
A WEHA system consists of an electronic base unit and a coil system installed specifically around the pipe. The electronics generate electrical impulses with defined waveforms, intensities and frequencies. These impulses are transferred to cables wound around the outside of the pipe.
This creates changing electrical and magnetic fields that act through the pipe wall on the water and its dissolved mineral components without direct contact. The pipe itself is neither opened nor modified.
What distinguishes WEHA
A flexible signal platform for changing water conditions.
No two water systems are identical. Mineral composition, conductivity, pipework and operating conditions all matter, so WEHA systems offer several signal and coupling options.
Pulsed operation
The signal remains active even during low-flow periods or when water is temporarily stationary.
Variable frequency and waveform
Frequency and waveform can be configured to suit the water characteristics and intended application.
Contact-free transmission
Signals are coupled into the water through the pipe wall.
Coils wound around the outside of the pipe generate changing fields within the water system. These fields may influence charged mineral components and the conditions in which crystallisation takes place.
The illustration is schematic. System design depends on the pipe material and diameter, water analysis, flow conditions and operating parameters.
Four stages
From pulse generation to crystallisation control.
- 01
Generate impulses
The base unit generates defined electrical impulses with varying frequencies and waveforms.
- 02
Transfer fields
The coil system transfers electric and pulsating magnetic fields through the pipe wall.
- 03
Influence crystallisation
The treatment is intended to encourage microscopic crystallisation nuclei to form within the moving water.
- 04
Manage deposit formation
Under suitable conditions, minerals can remain as transportable particles in the water instead of forming firmly bonded deposits on equipment surfaces.
General operating principle
The minerals remain in the water. The way they crystallise may change.
These diagrams illustrate the general principle of physical water treatment. Actual results depend on the water and system conditions.
Without treatment
Crystal growth on the pipe wall
Dissolved hardness-forming minerals can crystallise preferentially on existing nuclei and rough surfaces. Firmly adhering deposits may then form and continue to grow.
With physical treatment
Fine crystals may form in the water
Physical treatment may encourage fine crystal particles to form within the water flow. Under suitable conditions, existing deposits may also loosen gradually.
Schematic representation of the general principle of physical water treatment. Whether and to what extent changes occur depends, among other factors, on water composition, temperature, flow rate, pipe material and system conditions.
Installation & operation
Retrofittable without opening the pipe.
The coils are wound around the outside of the existing pipe. The water does not come into contact with the unit. The base unit, number of coils and winding arrangement are selected for the individual system.
- suitable for different pipe materials and diameters
- project-specific selection of frequencies and programmes
- continuous automatic operation
- no salt regeneration and no chemical dosing
Microscopic level
Encouraging crystallisation in the water—not on equipment.
The natural mineral content remains in the water. The aim is to create conditions in which scale-forming minerals are more likely to form fine suspended crystals than firmly bonded layers on technical surfaces.
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FURTHER TECHNICAL READING
“Physical Water Treatment – How It Works”
The paper discusses the formation of scale, the calcium carbonate–carbonic acid equilibrium and the physical conditions under which calcium carbonate may crystallise preferentially in the water rather than on pipe walls.
01 Formation of scale and boiler deposits02 Crystallisation nuclei in water03 Electric and magnetic fields04 Physical and chemical relationships
This publication provides further technical background. Individual theoretical explanations reflect the author’s professional view.
READ THE GERMAN PAPER →Technical background & field experience
Explore the science and the applications.
Background papers, test reports and documented cases provide further insight into the technology and its use in real water systems.