Endress+Hauser Proline Promass E 500 - Density Adjustment

Proline Promass E 500 PROFIBUS PA Commissioning
Endress+Hauser 141
‣
Zero verification
→  144
‣
Zero adjustment
→  145
Parameter overview with brief description
Parameter Description Selection
Installation direction Set sign of flow direction to match the direction of the arrow on
the sensor.
• Flow in arrow direction
• Flow against arrow direction
Density adjustment
With density adjustment, a high level of accuracy is achieved only at the point of
adjustment and at the relevant density and temperature. However, the accuracy of a
density adjustment is only ever as good as the quality of the reference measuring data
provided. Therefore it is not a substitute for special density calibration.
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.