Endress+Hauser PROline prosonic flow 93 Operating Instructions Manual page 114

6 Commissioning
114
Performing a zero point adjustment (with local display
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 display, select the "ZERO POINT ADJUSTMENT" function in the
function matrix:
HOME o F o R o BASIC FUNCTIONS
BASIC FUNCTIONS o F o R o PROCESS PARAMETER CH1/CH2
PROCESS PARAMETER o F o R o CALIBRATION
CALIBRATION o F o ZERO POINT ADJUSTMENT
6. If the function matrix is still locked, then you are automatically prompted to enter the
access code when pressing the OS keys. 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 "ZEROPOINT ADJUST RUNNING" appears on the display for
30...60 seconds while zero point adjustment is in progress.
– If the flow 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 completes, the "ZERO ADJUST" function
reappears on the display.
8. Back to the HOME position
– Press and hold down the Esc keys (
– Repeatedly press and release the Esc keys (
PROline Prosonic Flow 93 PROFIBUS-DP/-PA
k
X
) for longer than three seconds.
X
).
)
Endress+Hauser