Mettler Toledo GPro 500 Guía De Instalación Rápida página 30

Quick Setup Guide TDL GPro 500
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Connections on IO board in the sensor head
Note: T he sensor head cover of ATEX version should never been
opened, as this will invalidate the ATEX certification.
All openings have to be closed with certified cable glands
or blocking plugs of the same degree of certification as the GPro 500.
It is essential that you observe all provided information
and warnings. The system must be closed and grounded
WARNING
WARNING
before switching on the system.