4
VEGAMET 841, 842, 861, 862
61274-EN-191219
Ambienttemperature
You can nd the details in chapter "Thermal data" of these safety instructions.
Electrostaticcharging(ESD)
You can nd the details in chapter "Electrostatic charging (ESD)" of these safety instructions.
Zone 2 applications
The device must be installed in a protective housing or a switching cabinet with IP54 according to
IEC 60079-0.
The device may only be used in an area with a minimum pollution level of 2 or better, as dened in
IEC 60664-1.
6 Safeoperatingmode
Generaloperatingconditions
•
Do not operate the instrument outside the electrical, thermal and mechanical specications of
the manufacturer
Connectionconditions
•
The connection cable of VEGAMET 841, 842, 861, 862 has to be wired x and in such a way
that damages can be excluded
•
If the temperature at the inlet components exceeds 70 °C, temperature-resistant connection
cables must be used
7 Importantinformationformountingandmaintenance
Generalinstructions
The following requirements must be fullled for mounting, electrical installation, setup and mainte-
nance of the instrument:
•
The sta must be qualied according the respective tasks
•
The sta must be trained in explosion protection
•
The sta must be familiar with the respectively valid regulations, e.g. planning and installation
acc. to IEC 60079-14
•
Make sure when working on the instrument (mounting, installation, maintenance) that there is no
explosive atmosphere present, the supply circuits should be voltage-free, if possible.
•
The instrument has to be mounted according to the manufacturer specications, the Certicate
of Conformity and the valid regulations and standards
•
Modications on the instrument can inuence the explosion protection and hence the safety
•
Modications must only be carried out by employees authorized by VEGA company
•
Use only approved spare parts
•
Components for installation and connection not included in the approval documents are only
permitted if these correspond technically to the latest standard mentioned on the cover sheet.
They must be suitable for the application conditions and have a separate certicate. The special
conditions of the components must be noted and if necessary, the components must be inte-
grated in the type test. This applies also to the components already mentioned in the technical
description.
Mounting
Keep in mind for instrument mounting
•
Mechanical damage on the instrument must be avoided
•
Mechanical friction must be avoided