Siemens SITRANS F Modbus RTU RS 485 - Appendix; Unit Definitions

Appendix
B
B.1 Units
The following units are used in USMII transmitters:
SITRANS FM
• Volume 󹪞ow: Table B-2 Volume 󹪞ow units (Page 60) (default: m
3
/s)
• Totalizers: Table B-5 Totalizer units for volume 󹪞ow (Page 63) (default: m
3
)
Note
Unit settings on MODBUS and the display are linked
Changing the MODBUS units in󹪞uence the units displayed on the device and vice versa.
SITRANS FC
• Mass 󹪞ow: Table B-1 Mass󹪞ow units (Page 60) (default: kg/sec)
• Volume 󹪞ow: Table B-2 Volume 󹪞ow units (Page 60) (default: m
3
/sec)
• Density: Table B-3 Density Units (Page 62) (default: kg/m
3
)
• Temperature: °C
• Fraction (A, B): kg/sec.
• Fraction A pct: % (percent)
• Totalizer 1 & 2: Table B-4 Totalizer units for mass󹪞ow (Page 63) or Table B-5 Totalizer units
for volume 󹪞ow (Page 63) (default: kg or m
3
) depending on totalizer mode
• Batch: same as totalizers
Note
°C for temperature is not strictly speaking an SI unit. This should be K (Kelvin), but K is of little
practical signi󹪝cance to most users, hence the use of C (Celsius).
See also
Units and point positioners (Page 60)
Modbus RTU RS 485
Operating Instructions, 03/2021, A5E00753974-AB 59