7
ENGLISH
• Measure the spin time (ST) until the tur-
bine wheel stops.
See Annex 5 for typical values of spin
time.
The following recommendations have to
be observed for repair:
• In case of use with aggressive or danger-
ous gas, it may be necessary to send a
safety statement with the meter, detail-
ing the type of Gas that has been mea-
sured.
• Some gas may still be present inside the
meter and the pipe; therefore sufficient
ventilation is required.
• Repairs and maintenance must be done
by trained or qualified personal. Afte-
rwards a tightness test with 1.1 x PS
(Pmax) must be performed.
• When changing pressure-bearing parts,
ensure that spare parts which comply
with the PED are used.
• If used with wet gas, internal and exter-
nal effect of corrosion has to be checked
regularly and in case of severe corrosion,
the meter must be replaced.
• Use solvent and alcohol free cleaning
product to clean the meter.
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