A clear view even in a rough environment

Filling level control of wood fuels

High performance photoelectric sensors are robust and reliable solutions for level control even under harsh conditions. Experiences of a manufacturer of hot-air heating systems that are automatically fed with wood residues.

Eisenwerke Winnweiler Krämer KG (EWI-THERM) is a family-owned metalworking company with about 25 employees that manufactures space heaters and warm-air heaters for joineries, carpentries and woodworking stores (see box). "With our solutions, wood residues can be recycled and at the same time the company building can be heated. Compared to conventional hot water heating systems, our warm air heating in particular is an economical alternative," says Michael Krämer, responsible for sales and development at EWI-THERM.