Commissioning Instructions for PTB gas approval Proline Promass 84
Operation subject to legal metrological control ("Custody
Hauser
17
5.3
Requirements for usage
The meter must be operated with an uninterruptible voltage supply (emergency current supply in
according to EN 60654-2), which can bridge a power failure and secure operation for at least 3 days
or until maintenance operations are is carried out.
An automatic maintenance request must be technically ensured by the operator of the meters.
The functioning of the uninterruptible voltage supply and the triggering of the automatic
maintenance request must be checked and recorded in writing by the operator of the device.
When the device is in use, it must be ensured that the operating pressure does not drop below the
minimum operating pressure.
Missing seals must be set on the meter by the operator of the facility (the party selling the energy),
to ensure that the purchasing party cannot make any intentional or accidental changes.
5.4
Security measures
The main verification mark and the protective marks are taken from
20.
