Manual
<2. About the EJX Multivariable Transmitter>
2-9
IM 01C25R01-01E
Example: Kfactor Calculation
Table 2.9 Flow Condition Example
Symbol Value Description
Qm 3011.76 (lb/h)
∆p 201.0935 inH2O@68degF Differential pressure
Tb 273.15 K Reference temperature unit: K
SPb 101.325 kPa abs Reference static pressure unit: kPa abs
T 293.15 K Temperature unit: K
SP 500 kPa abs Static pressure unit: kPa abs
Kfactor = Qm(lb/h) / ∆p × (Tb / T) × (SP / SPb)
= 3011.76 / 201.0935 × (273.15 / 293.15) × (500 / 101.325)
= 99.0464
Table 2.10 For HART Communicator (Function : Basic Flow Calc)
Symbol HART Parameter name Item
Kfactor Flow Calc Fixed
Calcuration xation value of ow
SPb Ref SP
Reference static pressure
Tb Ref Temp Reference pressure
TempK1 Temp K1
The rst in temperature correction coefcient for liquid
For volume ow: set 0.