General Instruction Manual
System configuration and operation
Default settings
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IM 01U10B00-00EN-R, 3rd edition, 2018-07-09
9.3.4 Setting zero point
In order to avoid systematic flow rate measurement deviations, performance of a zero
point adjustment is recommended before starting measuring operations. For two- or multi-
phase fluids, the factory-set zero point value is preferable to a manual zero point adjust-
ment.
1. Flush flow meter with fluid and check valves for tightness.
2. Close valves in front of and after the flow meter and stop the flow.
3. Wait until density, temperature and pressure are stabilized.
4. In case of fluids, compare the density displayed on the Rotamass Total Insight with
the fluid density in order to rule out gas accumulations in the measuring tube.
5. In applications with increased process pressure, ensure that the process pressure
and its unit of measurement are set correctly.
6. Perform autozero.
9.3.5 Performing autozero
To ensure ideal measuring results, performance of a second autozero process is recom-
mended after several days of operation and stabilization of the installation conditions.
1. Press [SET] switch for 2 seconds to enter [Operation level].
2. Press [▼] switch until the [Operator] menu is selected.
3. Press [SET] switch to enter [Device setup].
4. Press [▼] switch until the [Diag/Service] menu is selected.
5. Press [SET] switch to enter [Diag/Service].
6. Press [▼] switch until the [AZ] menu is selected.
7. Press [SET] switch to enter [AZ].
ð Menu [Exe] is preselected.
8. Press [SET] switch to enter [Exe].
ð Parameter [Not exe] appears.
9. Press [▼] switch until [Exe] is selected.
10. Press [SET] switch.
ð Parameter [Exe] flashes.
11. Press [SET] switch to start autozero.
ð Progress bar appears to indicate status of autozero, after completion display
switches to next higher menu level.
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