Siemens SITRANS F Operating Instructions Manual page 38

Commissioning
6.4 Configuring with HART
Input
All parameters that are involved in the acceptance of the measured value in the MEM are
included in this block.
● Unit
● MIN/MAX
● Final value
● Leak flow volume
38
The unit of the measured variable is defined via this parameter. The following units are
available:
– m /h, m /min, m /s
3 3 3
– l/h, l/min, l/s
– USgal/h, USgal/min, USgal/s
– IMPgal/h, IMPgal /min, IMPgal /s
– kg/h
– t/h
– g/h
Note
Change of unit
In case of alteration of the unit no conversion of the measured value or the upper
range value is conducted.
These two parameters define the maximum and the minimum limits of the relative
flowrate.
The falling short of or exceeding of MIN/MAX can be transmitted as an alarm at power
output (see description of self-test) as well as via the binary outputs (see description of
outputs)
This parameter (in HART known as "URV") serves the adaptation of the power output to
the measuring range (20 mA = 100%).
The initial value of the measuring range (in HART known as "LRV" (lower range value)) is
not supported by the MEM and is reset to zero.
This parameter is a percent value and determines a minimum flowrate value (in relation
to the final value). Below the leak flow volume, the measured value is reset to zero.
Operating Instructions, 02/2013, A5E03821131-01
SITRANS FVA250