Emerson MMI-20019043 Manuel D’Utilisation
•
You cannot stop totalizers while the tranmitter is secured.
•
You cannot reset inventories while the transmitter is secured.
10.1.1
Approved methods to read or obtain process data
When the Weights & Measures application is installed, process data is approved for
custody transfer use only if an approved method is used for reading or obtaining it.
custody transfer use only if an approved method is used for reading or obtaining it.
Note
On the primary mA output, HART/Bell 202 communications may be used to poll for either
temperature or pressure, in conjunction with process data reporting.
temperature or pressure, in conjunction with process data reporting.
NTEP-approved methods to read or obtain process data
Table 10-1:
Process data
mA output
Modbus/RS-485 or
HART/RS-485
HART/RS-485
Transmitter dis-
play
play
Mass
✓
✓
Volume
✓
✓
Density
✓
✓
✓
Totalizer values
✓
✓
Inventory values
✓
✓
OIML-approved methods to read or obtain process data
Table 10-2:
Process data
mA output
Modbus/RS-485 or
HART/RS-485
HART/RS-485
Transmitter dis-
play
play
Mass
✓
✓
Volume
✓
✓
Density
✓
✓
✓
Totalizer values
✓
✓
(1)
Inventory values
✓
✓
10.1.2
Large totalizer values on the display (OIML applications
only)
If Approval is set to OIML and totalizer values become large enough, the display handles
large values in a special way. The value displayed may not reflect the actual value.
large values in a special way. The value displayed may not reflect the actual value.
(1) Special handling is applied to large totalizer values.
Operate the transmitter with the Weights & Measures application
164
Micro Motion
®
Model 2700 Transmitters with Analog Outputs