Endress+Hauser dosimass, Руководство по эксплуатации

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Dosimass Commissioning
Hauser 21
6 Commissioning
6.1 Function check
Make sure that all final checks have been completed before you start up your measuring point:
• Checklist for "Post-installation check"
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11
• Checklist for "Post-connection check"
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17
6.2 Switching on the measuring device
Once the function checks have been successfully completed, it is time to switch on the supply
voltage. The device is now operational.
The measuring device performs a number of power on self-tests. Normal measuring mode
commences as soon as startup completes.
!
Note!
If startup fails, an error message indicating the cause is displayed in the FieldCare operating program.
6.3 Zero point adjustment
All Dosimass measuring devices are calibrated with state-of-the-art technology. The zero point
obtained in this way is printed on the nameplate. Calibration takes place under reference operating
conditions (
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35). Consequently, zero point adjustment is generally not necessary for Dosimass!
Experience shows that the zero point adjustment is advisable only in special cases:
• To achieve highest measuring accuracy also with very small flow rates.
• Under extreme process or operating conditions (e.g. very high process temperatures or very high-
viscosity fluids).