Custody Transfer Measurement; Suitability For Custody Transfer, Metrological Control, Obligation To Subsequent Verification; Approval For Custody Transfer; Special Features Of Working In The Custody Transfer Mode - Endress+Hauser Proline Promass 84 MODBUS RS485 Operating Instructions Manual

Proline Promass 84 MODBUS RS485
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Endress+Hauser
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Custody transfer measurement

Promass 84 is a flowmeter suitable for custody transfer measurement for liquids (other than water)
and for gases.
7.1 Suitability for custody transfer, metrological control,
obligation to subsequent verification
All Promass 84 flowmeters are verified on site using reference measurements.
Only once it has been verified on site by the Verification Authority for legal metrology controls may
the measuring device be regarded as verified and used for applications subject to legal metrology
controls. The associated seal (stamp) on the measuring device ensures this status.
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Caution!
Only flowmeters verified by the Verification Authorities may be used for invoicing in applications
subject to legal metrology controls. For all verification processes, both the corresponding approvals
and the country-specific requirements resp. regulations (e.g. such as the German Verification Act)
must be observed. The owner / user of the instrument is obliged to subsequent verification.
7.1.1

Approval for custody transfer

The following guidelines for the custody transfer process were developed in accordance with the
following authorities for legal metrology controls:
• PTB, Germany
• NMi, The Netherlands
• METAS, Switzerland
• BEV, Austria
• NTEP, USA
• MC, Canada
7.1.2

Special features of working in the custody transfer mode

Switching on the power supply in custody transfer mode
If the measuring instrument is started in custody transfer mode, for example after a power outage,
system error No. 271 "POWER BRK. DOWN" flashes on the local display.
The fault message can be acknowledged or reset using the "Enter" key or by means of the status
input configured accordingly.
Note!
It is not mandatory to reset the fault message for correct operation.
Custody transfer measurement
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