Endress+Hauser Proline Promass A 100 PROFINET Operating Instructions Manual page 74

Commissioning
74
Performing density adjustment
Note the following before performing the adjustment:
• A density adjustment only makes sense if there is little variation in the operating
conditions and the density adjustment is performed under the operating conditions.
• The density adjustment scales the internally computed density value with a user-
specific slope and offset.
• A 1-point or 2-point density adjustment can be performed.
• For a 2-point density adjustment, there must be a difference of at least 0.2 kg/l
between the two target density values.
• The reference media must be gas-free or pressurized so that any gas they contain is
compressed.
• The reference density measurements must be performed at the same medium
temperature that prevails in the process, as otherwise the density adjustment will
not be accurate.
• The correction resulting from the density adjustment can be deleted with the
Restore original option.
"1 point adjustment" option
1. In the Density adjustment mode parameter, select the 1 point adjustment option
and confirm.
2. In the Density setpoint 1 parameter, enter the density value and confirm.
 In the Execute density adjustment parameter the following options are now
available:
Ok
Measure density 1 option
Restore original
3. Select the Measure density 1 option and confirm.
4. If 100% was reached in the Progress parameter on the display and the Ok option is
displayed in the Execute density adjustment parameter, then confirm.
 In the Execute density adjustment parameter the following options are now
available:
Ok
Calculate
Cancel
5. Select the Calculate option and confirm.
If the adjustment was completed successfully, the Density adjustment factor parameter
and the Density adjustment offset parameter and the values calculated for them are
shown on the display.
"2 point adjustment" option
1. In the Density adjustment mode parameter, select the 2 point adjustment option
and confirm.
2. In the Density setpoint 1 parameter, enter the density value and confirm.
3. In the Density setpoint 2 parameter, enter the density value and confirm.
 In the Execute density adjustment parameter the following options are now
available:
Ok
Measure density 1
Restore original
Proline Promass A 100 PROFINET
Endress+Hauser