Honeywell SmartLine, User Manual

Page: 69 / 130

6. Operation
6.3. Transmitter PV display
Revision 2 SmartLine Wireles User's Manual 55
Pressure Description
KGCM2
Kilograms per centimeter square
INH20
Inches H2O
INH20_4C
Inches H2O referenced to 4˚C
INH20_68f
Inches H2O referenced to 68˚F
MMH20
millimeters H2O
MMH20_4C
millimeters H2O referenced to 4˚C
MMH20_68F
millimeters H2O referenced to 68˚F
FTH20
Feet H2O
FTH20_4C
Feet H2O referenced to 4˚C
FTH20_68F
Feet H2O referenced to 68˚F
INHG Inches mercury
INHG_0C
Inches mercury referenced to 0˚C
MMGH
millimeters mercury
MMGH_0C
millimeters mercury referenced to 0˚C
For Pressure
The upper and lower calibration points indicate the upper and lower pressure value that will
correspond the upper and lower scale value respectively.
Flow = (scale EU100 – scale EU0) * sqroot(( DP – Cal Lower) / (Cal Upper – Cal Lower)) –
scale EU0 for DP > cal Lower
Flow = (scale EU100 – scale EU0) * sqroot((Cal Lower - DP) / (Cal Upper – Cal Lower)) – scale
EU0 for DP < -cal Lower
Flow = 0 for DP < abs ( cal lower)
Where scale EU100 and scale EU0 are in flow units and Cal Upper and Cal Lower are in
pressure units.
The square root function is automatically employed for conversion from pressure to flow scale
units. Calibration units are always in pressure units.