Proline Promag 51
6 Commissioning
Hauser
71
6
Commissioning
6.1
Custody Transfer Measurement
The Promag 51 flowmeter is suitable for custody transfer measurement with cold water. The meas-
uring system operates within a temperature range of 0...+30 °C and can be used, for example, in
drinking water supplies. Examples are given on Page 7. The Promag 51 is operated with a totalizer
display suitable for custody transfer and, optionally, with a pulse output suitable for custody transfer.
Measuring points for custody transfer for water are considered or approved by the certifying author-
ities as “entire plants”. Promag 51 including the inlet and outlet sections are, therefore, considered
as a part of this entire plant. To ensure correct measurement in custody transfer procedures, the pip-
ing and the measuring tube must always be filled with liquid.
When installing a certified measuring system, please also note the regulations for custody transfer
(Deutscher Eichverlag GmbH – Braunschweig):
• Allgemeine Vorschriften (AV) zur Eichordnung (EO)
• Anlage 6 zur Eichordnung (EO 6-1): Vorschriften für Volumen-Messgeräte für strömendes
Wasser
• PTB-A6.1: Volumen-Messgeräte für Kaltwasser
6.1.1
Suitability for custody transfer, custody transfer approval,
reapproval
With flowmeters suitable for custody transfer, approval by the standards authorities has not yet been
carried out. Flowmeters suitable for custody transfer may not be used for custody transfer proce-
dures until approved. However, such flowmeters can either be approved at a later date by a certifi-
cation body or, with the agreement of the authorities, calibrated for custody transfer on site. The
leaded seal of the certified instruments confirms this status.
The operator of an approved Promag 51 measuring system is required to apply for reapproval and
to comply with current regulations set by the standards authorities. The date for reapproval (year
number) is given on a special seal.
!
Note!
• Flowmeters suitable for custody transfer are technically identical to flowmeters approved for
“custody transfer”.
• In contrast to mechanical counters, magnetic flowmeters approved by the standards authorities
may be in continuous operation at Q
max
(= 100%).
• Flowmeters with a max. flow rate of Q > 2000 m
3
/h are exempted from custody transfer
approval. Such instruments are not approved but however can still be used as suitable for custody
transfer measurement.
"
Caution!
Only flowmeters approved by the standard authorities may be used for regulatory fiscal metering.
Содержание Proline Promag 51
Страница 4: ...QUICK SETUP commissioning Proline Promag 51 4 Endress Hauser...
Страница 10: ...1 Safety instructions Proline Promag 51 10 Endress Hauser...
Страница 52: ...4 Wiring Proline Promag 51 52 Endress Hauser...
Страница 80: ...7 Maintenance Proline Promag 51 80 Endress Hauser...
Страница 104: ...9 Trouble shooting Proline Promag 51 104 Endress Hauser...
Страница 122: ...11 Index Proline Promag 51 122 Endress Hauser...
Страница 124: ...www endress com worldwide BA080D 06 en 03 05 50101924 FM SGML6 0...