Endress+Hauser Proline Prosonic Flow 91 Operating Instructions Manual page 86

Description of device functions
86
Functional description PROCESS PARAMETER
ZERO POINT Use this function to start zero point adjustment automatically. The new zero point
ADJUSTMENT determined by the measuring system is adopted by the ZERO POINT function.
Options:
CANCEL
START
Factory setting:
CANCEL
!
• Zero point adjustment must only be carried out if the sensors have been replaced. The
value determined should not be over 3 ns. If the value is overshot, check whether the
pipe actually has zero flow. For example, sunshine can partially warm the pipe and the
resulting movement in liquid is measured as flow.
• Programming is locked during zero point adjustment The message "ZEROPOINT
ADJUST RUNNING" appears on the display.
• If the zero point adjustment is not possible, (e.g. if v > 0.1 m/s), or has been canceled,
then the alarm message "ZERO ADJUST NOT POSSIBLE" is shown on the display.
ZERO POINT Use this function to display the zero point correction value for the measuring pipe and the
measuring sensors.
Display:
Max. 5-digit number
Factory setting:
0 ns
Note!
Proline Prosonic Flow 91
Endress+Hauser