Flow Rate Sensor (MA)
Measurement of mass, volume and energy consumption in the humid air network.
blockType: AcausalFoundation.MoistAir.Sensors.FlowRate
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Description
Block Flow Rate Sensor (MA) It is an ideal sensor that measures mass flow, energy consumption and volume flow in the humid air network. The pressure, temperature, specific humidity or mass fraction of impurity gases on the sensor do not change.
The unit is connected in series with the measured component.
The mutual orientation of ports A and B sets the measurement sign. The sign is positive if the flow goes from port A to port B, and vice versa.
Switching connections to ports changes the sign of the measurement to the opposite.
Five ports are available for the output of measurement data:
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Port M outputs the mass flow rate.
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Port V outputs the volumetric flow rate.
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Port φ displays the power consumption value.
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The Mw port displays the mass flow of water vapor.
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Port Mg displays the value of the mass flow of impurity gases.
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Port Md displays the value of the mass flow of water droplets.
These ports are displayed on the block icon depending on the block settings. Configure the parameters of the unit to display only those ports that are necessary for measurements in a particular model.
Ports
Output
#
V
—
volumetric flow rate, m3/s
scalar
Details
Output port for volume flow measurement.
Dependencies
To use this port, check the box Volumetric flow rate.
| Data types |
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| Complex numbers support |
No |
#
Mw
—
mass flow rate of water vapor, kg/s
scalar
Details
An output port for measuring the mass flow of water vapor.
Dependencies
To use this port, check the box Water vapor mass flow rate.
| Data types |
|
| Complex numbers support |
No |
#
Mg
—
mass consumption of impurity gases, kg/s
scalar
Details
An output port for measuring the mass flow of impurity gases.
Dependencies
To use this port, check the box Trace gas mass flow rate.
| Data types |
|
| Complex numbers support |
No |
#
φ
—
power consumption, W
scalar
Details
An output port for measuring energy consumption.
Dependencies
To use this port, check the box Energy flow rate.
| Data types |
|
| Complex numbers support |
No |
#
M
—
mass flow rate, kg/s
scalar
Details
Output port for mass flow measurement.
Dependencies
To use this port, check the box Mass flow rate (dry air, water vapor, trace gas).
| Data types |
|
| Complex numbers support |
No |
#
Md
—
mass flow rate of water droplets, kg/s
scalar
Details
An output port for measuring the mass flow of water droplets.
Dependencies
To use this port, check the box Water droplets mass flow rate.
| Data types |
|
| Complex numbers support |
No |
Conserving
#
A
—
sensor input
humid air
Details
The humid air port corresponds to the sensor inlet. The flow rate is positive if the air flows from port A to port B.
| Program usage name |
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#
B
—
sensor input
humid air
Details
The humid air port corresponds to the sensor input. The flow rate is positive if the air flows from port A to port B.
| Program usage name |
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Parameters
Main
# Energy flow rate — enabling the output port to measure power consumption
Details
Select this option so that the sensor measures the energy consumption.
When this option is selected, the output port φ opens.
| Default value |
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| Program usage name |
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| Evaluatable |
No |
# Water droplets mass flow rate — switching on the output port for measuring the mass flow of water droplets
Details
Select this option so that the sensor measures the mass flow of water droplets.
When this option is selected, the Md output port opens.
| Default value |
|
| Program usage name |
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| Evaluatable |
No |
# Trace gas mass flow rate — switching on the output port for measuring the mass flow of impurity gases
Details
Select this option so that the sensor measures the mass flow of impurity gases.
When this option is selected, the Mg output port opens.
| Default value |
|
| Program usage name |
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| Evaluatable |
No |
# Volumetric flow rate — enabling the output port for volume flow measurement
Details
Select this option so that the sensor measures the volume flow.
When this option is selected, the output port V opens.
| Default value |
|
| Program usage name |
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| Evaluatable |
No |
#
Volumetric flow measurement conditions —
conditions for measuring volume flow
Actual conditions | Standard conditions
Details
Select whether the sensor calculates the volumetric flow rate under real operating conditions or at standard pressure, temperature, and relative humidity.:
-
Actual conditions— the sensor calculates the volumetric flow rate using the density of moist air under real operating conditions of the system. -
Standard conditions— The sensor calculates the volumetric flow rate using the density of humid air under standard conditions. If this option is selected, additional parameters become available for setting standard pressure, temperature, and relative humidity.
Dependencies
To use this option, check the box for the option Volumetric flow rate.
| Values |
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| Default value |
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| Program usage name |
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| Evaluatable |
No |
#
Standard temperature —
humid air temperature under standard conditions
K | degC | degF | degR | deltaK | deltadegC | deltadegF | deltadegR
Details
Humid air temperature under standard conditions.
Dependencies
To use this option, check the box for the option Volumetric flow rate, and for the parameter Volumetric flow measurement conditions set the value Standard conditions.
| Units |
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| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Mass flow rate (dry air, water vapor, trace gas) — enabling the output port for mass flow measurement
Details
Select this option so that the sensor measures the mass flow.
When this option is selected, the output port M opens.
| Default value |
|
| Program usage name |
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| Evaluatable |
No |
#
Standard pressure —
humid air pressure under standard conditions
Pa | uPa | hPa | kPa | MPa | GPa | kgf/m^2 | kgf/cm^2 | kgf/mm^2 | mbar | bar | kbar | atm | ksi | psi | mmHg | inHg
Details
Humid air pressure under standard conditions.
Dependencies
To use this option, check the box for the option Volumetric flow rate, and for the parameter Volumetric flow measurement conditions set the value Standard conditions.
| Units |
|
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Water vapor mass flow rate — switching on the output port for measuring the mass flow of water vapor
Details
Select this option so that the sensor measures the mass flow of water vapor.
When this option is selected, the output port Mw opens.
| Default value |
|
| Program usage name |
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| Evaluatable |
No |
# Standard relative humidity — relative humidity of the air under standard conditions
Details
Relative humidity of the air under standard conditions.
Dependencies
To use this option, check the box for the option Volumetric flow rate, and for the parameter Volumetric flow measurement conditions set the value Standard conditions.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |