SMC Networks ISE70G-N02-L2 Operation Manual page 64

○Conversion formula of the process data and pressure gauge measurement value
(1) Conversion formula from the process data to the pressure gauge measurement value:
Pr = a × (PD) + b
(2) Conversion formula from the pressure gauge measurement value to the process data:
(PD) = (Pr – b) / a
Pr: Pressure gauge measurement value and pressure set value
PD: Pressure gauge measurement value
a: Inclination
b: Intercept
[Inclination and intercept to the unit specification]
Series
ISE70
ISE71
[Calculation example]
(1) Conversion from the process data to the pressure measurement value
(For ISE70 series, unit specification MPa and PD = 2000)
Pr = a × (PD) + b
= 0.00025 × 2000 - 0.25
= 0.25 [MPa]
(2) Conversion from the pressure measurement value to the process data
(For ISE70 series, unit specification MPa and Pr = 0.75 [MPa])
(PD) = (Pr – b) / a
= [0.75 – (–0.25)]/0.00025
= 4000
Unit Inclination a
MPa 0.00025
kPa 0.25
2
kgf/cm 0.002549
bar 0.0025
psi 0.03626
MPa 0.0004
kPa 0.4
2
kgf/cm 0.004079
bar 0.004
psi 0.05802
Intercept b
-0.25
-250
-2.549
-2.5
-36.26
-0.4
-400
-4.079
-4
-58.02
-63-
No.PS※※-OMV0004-H