KROHNE M10 Converter H250-H 54 Ex II2G EN - Manual (Page 9)

11/2002
Signal converter M10-EEx d – Supplementary instructions 9
6 Initial startup
Check the following points before initial startup:
• Suitability of the materials used for the measuring tube and gaskets for adequate resistance
to corrosion through the process product.
• Compare the data on the nameplate on the signal converter with the existing operating data.
• Check that the measuring tube has been correctly installed in the pipeline.
• Check that the equipotential bonding system is properly connected.
• Check correct connection of the power cables.
• Check that the cover(s) of the electronics compartment is firmly in place, that the special lock
is tightened down.
7 Operation
It is not permitted to open the cover of the electronics compartment during operation and in the
presence of an explosive atmosphere.
Should parameterization of the device become necessary in the presence of an explosive
atmosphere, this can be done by applying the supplied programming bar magnet to the glass
window of the electronics compartment, without opening the housing, or digitally by way of the
signal output (HART interface).
In the case of flammable products, the measuring sections shall be included in the periodic
pressure testing of the plant.
8 Preventive maintenance
8.1 Maintenance
The signal converter does not require any maintenance under normal operating conditions and
when used for the intended purpose. Within the scope of checks required to be carried out in
hazardous areas to maintain systems in proper working order, the following visual inspections
should be carried out at regular intervals:
• Inspection of the housing, cable entries and incoming cables for signs of corrosion and
damage,
• Check of pipe connections for leakages.