FMC Corporation - Talstar 80 - Handbuch (Seite 63)

Proline Promass 80 PROFIBUS PA Commissioning
63
Performing a zero point adjustment
1. Operate the system until operating conditions have settled.
2. Stop the flow (v = 0 m/s).
3. Check the shutoff valves for leaks.
4. Check that operating pressure is correct.
5. Now perform the adjustment as follows:
Key Procedure Display text
F
HOME position → enter the operating matrix > GROUP SELECTION <
MEASURED VALUES
P
Select the "PROCESS PARAMETER" function group > GROUP SELECTION <
PROCESS PARAMETER
N Select the desired function "ZERO ADJUST". ZERO ADJUST CANCEL
P
When you press P you are automatically prompted to enter the access code if
the function matrix is still disabled.
CODE ENTRY
***
P
Enter code (80 = factory setting) CODE ENTRY
80
F
Confirm code entry.
The "ZERO ADJUST" function then appears again on the display.
PROGRAMMING
ENABLED
ZERO ADJUST.
CANCEL
P
Select "START" ZERO ADJUST.
START
F
Confirm entry with the E-key.
A security query appears on the display. SURE? NO
P Select "YES" SURE? YES
F
Confirm entry with the E-key. Zero point adjustment is now started. The
message on the right appears on the display for 30 to 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 is completed, the "ZERO ADJUST." function
reappears on the display.
ZERO ADJUST.
RUNNING
ZERO ADJUST.
CANCEL
F The new zero point value is displayed when the Enter key is pressed. ZERO POINT
Q Press P simultaneously → HOME position