Table 2-1: Pre-Programmed Engineering Units For Dp - Honeywell SMV800 User Manual

Engineering Units
The Differential Pressure Config tab displays the Lower Range Value (LRV), Low Range Limit (LRL),
Upper Range Value (URV) and Upper Range Limit (URL) for DP in the unit of measure selected in the
Engineering Units field "
DP Engineering Units
Select one of the preprogrammed engineering units in

Table 2-1: Pre-programmed Engineering Units for DP

Engineering Unit
inH2O @ 39F d
inH2O @ 68F
mmHg @ 0C
inHg @ 32F
mmH2O @ 4C
mH2O @ 4C
inH2O @ 60F
LRV and URV
The Lower Range Value and the Upper Range Value fields for DP are found on the Differential
Pressure Config tab.
DP Range Values
Configure LRV and URV outputs for the differential pressure input.
•
LRV = Enter the desired lower range value
•
URV = Enter the desired upper range value
(default = 100 inH2O@39.2 °F for SMV models SMA845 and SMG870)
(default = 10 inH2O@39.2 °F for SMV models SMA810)
Damping
Adjust the damping time constant for Differential Pressure to reduce the output noise. Default
value of damping is 0.5 seconds.
Page 18
Diffrential Pressure Unit"
psi
kPa
M Pa
mbar
bar
2
g/cm
2
Kg/cm
ATM
SMV800 Modbus User's Guide
.
Table 2-1
for display of the DP measurement.
Meaning
Inches of Water at 39.2
Inches of Water at 68
Millimeters of Mercury at 0
Pounds per Square Inch
Kilopascals
Megapascals
Millibar
Bar
Grams per Square Centimeter
Kilograms per Square Centimeter
Inches of Mercury at 32
Millimeters of Water at 4
Meters of Water at 4
Normal Atmospheres
Inches of Water at 60
° F (4 ° C)
° F (20 ° C)
° C (32 ° F)
° F (0 ° C)
° C (39.2 ° F)
C (39.2 F)
° °
° F (15.6 ° C)
Revision 1.0