OPERATION
5
17
OPTISWIRL 4070
www.krohne.com
05/2016 - 4001268803 - AD OPTISWIRL 4070C Ex-II3G R04
5.1 Start-up
Start-up may only commence when the vortex flowmeter:
•
is correctly installed in the system and connected.
•
has been checked for the proper state with regard to its installation and connection
requirements.
The user of the system must have it checked before start-up in compliance with the national
regulations for checks before startup.
If the device needs to be configured due to the existence of an explosive atmosphere, this can be
done using the supplied programming magnets. There is no need to open the housing as it can
be done through the glass window of the electronics compartment or digitally via the signal
output (HART
®
interface).
5.2 Operation
Vortex flowmeters must be operated in such a way that they remain within the maximum and
minimum permissible temperatures and pressures and the electrical limit values.
Vortex flowmeters may only be operated if the equipment parts necessary for safety are effective
in the long run, and are not rendered inoperable during operation.
When it comes to flammable products, the measuring sections must be included in the periodic
pressure tests of the system.
Terminal compartments may be opened even in an energised state in hazardous areas. Work on
electrical connections (e.g. configuration via the HART
®
interface) is also permitted in an
energised state. Terminal compartments must be closed immediately upon completion of the
work.
5.3 Electrostatic charge
In order to avoid ignition hazards due to electrostatic charge, vortex flowmeters may
not be used in areas with:
•
processes that generate strong charges,
•
mechanical friction and cutting processes,
•
spraying of electrons (e.g. in the vicinity of electrostatic painting systems) or
•
pneumatically conveyed dust is exposed.
CAUTION!
Electrostatic charging of the housing surface by friction must be avoided. The devices must not
be dry cleaned.
