ABB SM2000 User Manual Supplement page 18

Videographic Recorders
SM1000 and SM2000
Fig. 2.12 Temperature and Density Compensation
16
Mass Flow Calculation – Average density correction
The average density over a given temperature range is used to
calculate the mass flow as follows:
Qma = Qc x Da,
where Qc is the temperature compensated flow and Da (a
constant) is the average density.
This is implemented as follows:
×
a1 Da
m3
= -------------------
m2
where a1 and m2 are the linearized flow and temperature
compensation from the previous example:
2 Math Configuration
IM/SM2000ADV Issue 7