Zero Point Adjustment - Siemens SITRANS FC430 Operating Instructions Manual

Zero Point Adjustment wizard (menu item 1.2) (Page 103)
Inputs/Outputs wizard (menu item 1.4) (Page 107)
6.3.3.3

Zero point adjustment

The flowmeter system is optimized through a zero point adjustment which is performed via the
Zero Point Adjustment wizard.
Performing a zero point adjustment
Gas application
Zero point adjusting the device is only recommended for liquid applications.
1. Flush out any gases and obtain stable temperature conditions by running flow at operational
conditions (pressure and temperature) for minimum 30 minutes.
Figure 6-2
2. Close the outlet shut-off valve while maintaining the system pressure. If bypass flow is
necessary, open the bypass valve. If the pressure can be increased by 1 to 2 bars with
stopped flow, this should be applied.
3. Wait 1 to 2 minutes, for the system to settle, and then perform zero adjustment. Waiting
longer can change the temperature.
FC430 (From firmware 4.0)
Operating Instructions, 06/2017, A5E39789392-AA
CAUTION
Best practice zero point adjustment with a by-pass line and two shut-off devices
Commissioning
6.3 Local commissioning
101