The use of heat pumps has increased along with the green transition to environmentally friendly forms of energy. Many large air to water heat pumps are already installed where the energy in the air is used to evaporate a refrigerant either directly where the refrigerant is present in the evaporator or indirectly where a frost-proof one circulates brine.
The A2 will now be replaced by A3 to provide a better product and simplify our product program. The A3 provide a better accuracy especially at elevated temperatures and has been used for heat pumps for some years.
HB-level switches are upgraded to IP66 for outdoor use with new electronic unit/housing and union thread / threaded connection. The product update will be ready for the market in the fall of 2020.