Dosch Messapparate GmbH products

The construction of these paddle units has been developed over more than 30 years operational usage. The units control the flow of liquids and gases in either horizontal or vertical pipes DN 15 to DN 5000 with pressure ranges PN 10 to PN 320. It is approved acc. KAT IV PED as saftey related control system.

These rugged and hard wearing float operated units measure and control gases and uncontaminated liquids. The units can be mounted in either horizontal or vertical pipes, DN 15 to DN 150, and are suitable for use with pressure ranges PN 10 to PN 320.

EARL type 172 controls the flow in pipes DN 80 and larger. Tough and unaffected by non-adhesive impurities in the medium these flow switches controls the flow of gases regardless of high operating pressures.

The unit has been developed for long-term operational use and controls liquid flows from 0.1 l/h or gas flows from 20 l/h referred to air with standard conditions. The unit is suitable for horizontal pipes with threaded process G ¼. The set point is factory set.

When the medium enters in the direction of flow indicated by the arrow it moves the pendulum with target disc and weight against the force of the weight, in the direction of flow A permanent magnet is situated at the upper end of the lever which operates either one or two switch contacts, these are located adjacent to the system tube. The set point is fixed. For adjustable set points see type 107hve.

Tough and unaffected by non-adhesive impurities in the medium these flow switches control the flow of gases regardless of high operating pressures. For units to control the flow of liquids see type 107.