Endress+Hauser MODBUS RS485, Operating Instructions Manual

Page: 49 / 92

LPGmass Modbus RS485 Commissioning
Hauser 49
Parameter overview with brief description
Parameter Prerequisite Description Selection / User
interface / User
entry
Factory setting
Corrected volume flow calculation – Select reference density for
calculating the corrected
volume flow. • Fixed reference
density
• Calculated
reference density
• Reference density
by API table 53
• External reference
density
Calculated reference
density
External reference density In the Corrected volume flow
calculation parameter, the
External reference density
option is selected.
Shows external reference
density. Floating point
number with sign –
Fixed reference density The Fixed reference density
option is selected in the
Corrected volume flow
calculation
parameter
parameter.
Enter fixed value for reference
density. Positive floating-
point number –
Reference temperature In the Corrected volume flow
calculation parameter, the
Calculated reference density
option is selected.
Enter reference temperature
for calculating the reference
density. –273.15 to 99 999 °C Country-specific:
• +20 °C
• +68 °F
Linear expansion coefficient In the Corrected volume flow
calculation parameter, the
Calculated reference density
option is selected.
Enter linear, medium-specific
expansion coefficient for
calculating the reference
density. Signed floating-point
number 0.0
Square expansion coefficient In the Corrected volume flow
calculation parameter, the
Calculated reference density
option is selected.
For media with a non-linear
expansion pattern: enter the
quadratic, medium-specific
expansion coefficient for
calculating the reference
density. Signed floating-point
number 0.0
10.5.2 Carrying out a sensor adjustment
The Sensor adjustment submenu contains parameters that pertain to the functionality of
the sensor.
Navigation
"Setup" menu → Advanced setup → Sensor adjustment
‣
Sensor adjustment
Installation direction
→  49
‣
Zero point adjustment →  50
Parameter overview with brief description
Parameter Description Selection Factory setting
Installation direction Set sign of flow direction to match the
direction of the arrow on the sensor. • Flow in arrow direction
• Flow against arrow direction Flow in arrow direction