Measuring systems for harvester

4W Herman Advanced Control and Measuring System

Epec 4W Herman system is both an extremely versatile and easy-to-use measuring system as well as a control system for the harvester heads for the most demanding professional usage. 4W Herman has been developed utilizing all the experience that we have gained from our well-known and proven Epec 4W30 and 4W50 solutions to be up to standards given by the forestry companies.

Epec 4W Herman is a reliable and accurate measuring system for measuring both the length and diameter of the log as well as the timber volume. Versatile and user friendly trouble-shooting features decrease the need for after-sale-service in the field. The key features in designing the system have been paying attention to accuracy and reliability of the operations as well as the easiness of use, inspite of the versatility of the system.

Numerous features to make work easier:
– Versatile features for controlling the harvester head
– Advanced calibration modes
– Easy-to-use graphical user interface
– Fast and easy to install
– Easy to program
– Color marking
– Versatile controlling of the pumps to the different machines
– Up to 30 pre-selections, 10 tree species, 10 assortments
– Printable production reports
– Buzzer

USB support:
– Updating the programs
– Printer connection
– Data transfer (e.g. PRD-files) to the home computer using USB
memory stick
– MASK Service Key System










Contact us for more
+358 (0)20 760 8111


tested, designed and produced in finland.


Epec control systems are made 100% in Finland. We are a control system expert, specializing in intelligent control systems and information systems for even the most demanding conditions. Epec’s organization and processes have been fine tuned to cooperate with large international customers.