50
Triggered Delta Volumes
Section 5: Calibrate and configure the meter
3410 Series Gas Ultrasonic Meters Operations Manual
January 2018
3-9000-777 Rev E
Read delta volume registers (either the FLOAT registers or the LONG register pairs) in a single
Modbus read. If the delta volume registers are read as LONG register pairs, calculate each delta
volume as follows:
Equation 5-5 Triggered Delta volume
where
Repeat “
P
ERIODIC
L
OOP
”
5.2 Configure operational parameters
=
triggered delta volume (forward or reverse, flow-condition or
base-condition) (m
3
or ft
3
) (
TrigDeltaPosVolFlow,
TrigDeltaNegVolFlow, TrigDeltaPosVolBase,
TrigDeltaNegVolBase
)
=
triggered delta volume overflow integer value (forward or
reverse, flow-condition or base-condition) (1e
9
m
3
or 1e
9
ft
3
)
=
triggered delta volume lower integer value (forward or
reverse, flow-condition or base-condition) (m
3
or ft
3
)
Table 5-5 Configure operational parameters
Calibration selection
Description
Analog inputs and outputs (
Section 5.3
)
Calibration settings for the pressure and temperature analog inputs.
Meter factors (
Section 5.4
)
View or edit the calibration coefficients for the meter.
Flow calibration (
Section 5.4.1
)
Calibrate the meter during flowing conditions.
Frequency/Digital output sources
(
Section 5.4.2
)
Outputs that can be configured as either a frequency output or a digital status.
Frequency output (
Section 5.5
)
Configure the available frequency outputs.
Meter Digital outputs
(
Section 5.6
)
Configure the digital outputs.
HART outputs
(
Section 5.8
)
Configure the HART outputs.
Meter corrections
(
Section 5.9
)
Configure meter corrections that include:
•
Profile factor for 3412 and 3411 Meters.
•
Temperature expansion correction (if Live or Fixed), Linear expansion
coefficient.
•
Linear expansion coefficient reference temperature.
•
Pressure expansion correction.
•
Pipe outside diameter.
•
Young’s modulus value (ratio of tensile stress to tensile strain).
•
Poisson's Ratio value (the absolute ratio of the pipe material lateral strain
over axial strain).
Temperature and pressure
(
Section 5.10
)
Temperature and Pressure - to set the scaling for analog inputs, enter fixed
values, and set alarm limits for both temperature and pressure.
DeltaVolume
Overflow
1e9
¥
(
)
Lower
+
=
DeltaVolume
Overflow
Lower
