Emerson Daniel 3410 Series User Manual

3410 Series Gas Ultrasonic Meters Operations Manual Section 4: Flow measurement
3-9000-777 Rev E January 2018
Temperature-effect expansion correction 31
4.5.4 Temperature-effect expansion correction
The meter is capable of correcting the raw volumetric flow rate for the effect of pipe expansion
due to temperature changes. Note that for the temperature-effect expansion correction factor
to be calculated, the correction must be enabled (via the
EnableExpCorrTemp data point) and
the flow-condition temperature must be available (i.e., the
EnableTemperatureInput data point
must be set to ‘Live’(1) or ‘Fixed’(2), see Section 5.9.2). The temperature-effect calculation is
shown in Equation 4-12. If the temperature-effect expansion correction factor is not calculated,
it is set to 1.0.
Equation 4-12 Temperature-Effect Expansion Correction
where
= expansion correction factor due to temperature (dimensionless)
(ExpCorrTemperature)
= pipe linear expansion coefficient due to temperature (K-1)
(LinearExpansionCoef)
= flow-condition temperature (K) (FlowTemperature)
= reference temperature for the pipe linear expansion coefficient (K)
(RefTempLinearExpCoef)
ExpCorr
T
13α× T
f
T
ref
–()×[]+=
ExpCorr
T
α
T
f
T
ref

Emerson Daniel 3410 Series Specifications

General

Brand	Emerson
Model	Daniel 3410 Series
Category	Measuring Instruments
Language	English