Technical data

High viscosity calibration coefficients (continued)Table 4-2:
Daniel MeterLink Display Name Data Points, Options and Guidelines
Reverse A2 High Viscosity Data points affected:
• RevA2High Viscosity
Options:
• Enter a value (s/m or s/ft) within the range [‑0.1,0.1
s/m].
Guidelines:
• This value should only be modified under direction
of Daniel personnel.
Reverse A3 High Viscosity Data points affected:
• RevA3High Viscosity
Options:
• Enter a value (s
2
/m
2
or s
2
/ft
2
) within the range
[‑0.1,0.1 s
2
/m
2
].
Guidelines:
• This value should only be modified under direction
of Daniel personnel.
4.1.2 Customer calibration method
The Daniel 3810 Series Liquid Ultrasonic Flow Meter offers forward and reverse meter
factors for Customer Calibration. The Customer Calibration method to use is selected via
the CalMethod data point with None (0) being the default value (i.e., do not apply any
meter factor).
Customer-Calibrated Average Flow Velocity Equation 4-2:
V
C
ustomerCal
= V
FactoryCal
V
CustomerCal
=
Customer-calibrated average flow velocity (m/s) (AvgFlow)
V
FactoryCal
=
Factory-calibrated average flow velocity (m/s) (FactoryCalVel)
In order for the appropriate meter factor to be applied, the CalMethod data point must be
set to “Meter Factor” (3). In that case, the meter shall apply the appropriate meter factor
as shown in the following equation.
Customer-Calibrated Average Flow Velocity (MeterFactor) Equation 4-3:
V
C
ustomerCal
= V
FactoryCal
× MtrFc
tr
V
CustomerCal
=
Customer-calibrated average flow velocity (m/s) (AvgFlow)
V
FactoryCal
=
Factory-calibrated average flow velocity (m/s) (FactoryCalVel)
MtrFctr =
Meter factor (dimensionless) where MtrFctr = FwdMtrFctr if FactoryCalVel ≥ 0,
RevMtrFctr otherwise
Daniel Liquid Ultrasonic Flow Meters calibration and configuration parameters
Operations 31