Endress+Hauser HART Proline t-mass I 300 - Page 115

Proline t-mass I 300 HART Commissioning
Endress+Hauser 115
that the accuracy of the in-situ adjustment can suffer when just one flow point is defined if
the measured flow is not close to the adjustment value.
Bidirectional flow
Measuring devices that are equipped with the bidirectional option can be adjusted in situ
in both flow directions or in just one flow direction, as required. If the measuring device is
only adjusted in one direction, it is important that the adjustment is in the positive
direction (forward flow) as these adjustment points are automatically replicated to the
negative direction (reverse flow).
Unknown gas composition
If the gas or gas mixture is unknown, or if the gas composition cannot be defined by the
standard gas selection, the user can define the process gas as "Air". This method has the
disadvantage that compensation in the event of variations in the pressure and
temperature cannot be guaranteed. If the operator is not sure of the exact composition of
the gas but can make an approximate guess, it is recommended to use this approximate
gas composition instead of air.
"In-situ adjustment" submenu
Navigation
"Expert" menu → Sensor → In-situ adjustment
‣
In-situ adjustment
Activate in-situ adjustment (17360)
→  116
Input type reference value (17351)
→  116
Delete values (17355)
→  116
Confirm (17356)
→  116
Select flow reference (17354)
→  116
Stability check (17366)
→  116
Actual flow value (17365)
→  116
External reference value (17352)
→  116
Reference value (17353)
→  116
Apply value (17364)
→  116
Status (17367)
→  116
Description 1 (17359)
→  116
Description 2 (17358)
→  116