Initial Startup; Operation; Preventive Maintenance; Maintenance - KROHNE H250/M10 Installation And Operating Instructions Manual
Variable-area flowmeter
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Also See for H250/M10:
- Supplementary instructions manual (16 pages) ,
- Supplementary instructions manual (16 pages)
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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 dust atmosphere.
•
Should parameterization of the device become necessary in the presence of an explosive
dust 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).
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 locations 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.
•
After any maintenance work has been carried out, be sure to regrease the thread of the
flameproof cover of the signal converter, including cover gaskets, with a resin-free and acid-free
all-purpose grease.
8.2
Dismantling
8.2.1
General
Before connecting or disconnecting the device interconnecting cables, make sure that all cables
leading into the signal converter are isolated from the ground (reference potential) of the
hazardous location. This also applies to safety conductors (PE), functional ground (FE) and the
equipotential bonding conductor (PA).
Supplementary Installation and Operating Instructions M10 EEx d
9
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