A clear view even in a rough enviroment

High performance light barriers are robust and reliable solutions for filling level control even under harsh conditions. Experiences of a manufacturer of warm air heaters, which are automatically fed with wood residues.


Eisenwerke Winnweiler Krämer KG (EWI-THERM) is a familyowned metalworking business that employs around 25 people and manufactures space heaters and hot-air heaters for joineries, carpentry stores and woodworking businesses (see box). ''With our solutions, wood residues can be recycled
and the company building can be heated at the same time. Compared to conventional hot water heating systems, our hot air heating in particular is an economical alternative,'' says Michael Krämer, who is responsible for sales and development at EWI-THERM.