3410 Series Gas Ultrasonic Meters Operations Manual
Section 5: Calibrate and configure the meter
3-9000-777 Rev E
January 2018
Wet calibration
43
5.1.2
Wet calibration
The Daniel 3410 Series Gas Ultrasonic Flow Meter meter offers three selections for wet
calibration: 12-point piece-wise linearization, a third-order polynomial, or none. The wet
calibration method is selected via the
CalMethod
data point with “None” being the default
value. The wet calibration gas flow velocity is calculated from the dry calibration gas flow
velocity as shown in
Equation 5-2
.
Equation 5-2 Wet-calibration gas flow velocity
where
Configure the data points listed below from the Daniel MeterLink
Calibration| Meter Factors
menu:
1.
Choose a Flow Calibration Method:
•
Polynomial
•
Piece-wise linear
•
None (If set to
None
then the wet calibration has the same value as the dry
calibration.)
=
wet-calibration gas flow velocity (m/s) (
AvgFlow
)
=
dry-calibration gas flow velocity (m/s) (
DryCalVel
)
=
selected wet calibration function
Table 5-2 Data points for wet calibration method
Daniel MeterLink
Display Name
Data Points, Options and Guidelines
Flow calibration method
Data points affected:
•
CalMethod
Options:
•
Piece-wise (2)
•
Polynomial (1)
•
None (0)
Guidelines:
•
This value should only be modified under direction of Daniel
personnel.
VWetCal WetCalFunction VDryCal
(
)
=
V
WetCal
V
DryCal
WetCalFunction x
( )
