Emerson Daniel 3410 Series Operation Manual page 46

Configurations
January 2019
Table 5-3: Data points for Piece-wise linearization calibration
Daniel Meterlink
Display Name
Reverse Flow Rate
Reverse Meter Factor
Procedure
1. Select Piece-wise linear from the Calibration > Meter Factors menu.
2. Click the Add button below the table to add a new calibration point to the bottom
3. Click Write to apply the calibration parameters to the meter.
Third-order polynomial for wet calibration
When the Polynomial wet calibration method is selected, the meter uses a third-order
polynomial on the dry-calibration velocity
Equation 5-4: Wet calibration - third order polynomial
Where
V
WetCal
V
SryCal
C
0
C
1
C
2
C
3
Wet calibration procedure using Third-order polynomial
If selecting "Polynomial Coefficients", the "C" calibration coefficients are applied.
46
™
Data points, options and guidelines
Data points affected
• RevFlwRate1...RevFltRate
12 Options:
• Enter a value (m
Guidelines:
• The flow rates must be entered from highest to lowest.
Data points affected
• RevMtrFctr1...RevMtrFctr1
12 Options:
• Enter a value (dimensionless) within the range [0.95, 1.05]
of the table. You can add a maximum of 12 points. The calibration points must be
entered from the highest flow rate to the lowest flow rate.
V = C
WetCal
= wet-calibration gas flow velocity (m/s) (AvgFlow)
= dry-calibration gas flow velocity (m/s) (ADryCalVel)
th
order coefficient (m/s) (FwdC0 or RevC0)
= wet-calibration 0
st
= wet-calibration 1 order coefficient (dimensionless) (FwdC1 or RevC1)
nd
= wet-calibration 2 order coefficient (s/m) (FwdC2 or RevC2)
rd
= wet-calibration 3 order coefficient (s
3 3
/h or ft /h) within the range [0.200000 m
Wet calibration - third order
+ C V C V
2
0 1 DryCal + 2 DryCal
2 2
/m ) (FwdC3 or RevC3)
Operations manual
DAN-20057316
(continued)
3
/h]
polynomial.
+ C V
3
3 DryCal
Operations manual