Endress+Hauser PROline prosonic flow 93 Operating Instructions Manual page 92

6 Commissioning
92
Performing a zero point adjustment
1. Operate the system until normal operating conditions resume.
2. Stop the flow (v = 0 m/s).
3. Check the shut-off valves for leaks.
4. Check that operating pressure is correct.
5. Using the local operation, select the "ZERO POINT ADJUSTMENT" function in the
function matrix:
HOME → F → R → BASIC FUNCTIONS
BASIC FUNCTIONS → F → R → PROCESS PARAMETER C1/C2
PROCESS PARAMETER → F → R →CALIBRATION
CALIBRATION → F → ZERO POINT ADJUSTMENT
When you press OS you are automatically prompted to enter the code if the func-
6.
tion matrix is still disabled. Enter the code.
Use OS to select START and press F to confirm.
7.
Select YES at the prompt and press F again to confirm. Zero point adjustment now
starts.
– The message "ZERO POINT ADJUST RUNNING" appears on the display for
30...60 seconds while adjustment is in progress.
– If the fluid velocity in the pipe exceeds 0.1 m/s, the following error message
appears on the display: ZERO ADJUST NOT POSSIBLE.
– When the zero point adjustment is completed, the "ZERO ADJUST." function
reappears on the display.
8. Back to the HOME position
– Press and hold down the Esc key (
– Repeatedly press and release the Esc key (
PROline Prosonic Flow 93
X
) for longer than three seconds.
X
).
Endress+Hauser