Measurement Selector (MA)
Access to measured values of pressure, temperature, humidity, and the amount of impurity gases in the final volume of humid air.
blockType: AcausalFoundation.MoistAir.Sensors.MeasurementSelector
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Path in the library: |
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Description
Block Measurement Selector (MA) allows you to access measurements of pressure, temperature, humidity, and the amount of impurity gases inside a unit with a finite volume of humid air. There is no mass or energy flow through the sensor.
Blocks with a finite volume of humid air, that is Constant Volume Chamber (MA), Pipe (MA), Rotational Mechanical Converter (MA) and Translational Mechanical Converter (MA), contain an internal node that represents the volume of moist air inside the component. Conventional sensors cannot connect to this internal node. Therefore, each of the units with a finite volume of moist air has an output signal port F, which outputs a vector signal containing measurement data of pressure (in Pa), temperature (in K), humidity level, mass ratio of water droplets and the amount of impurity gases inside the component.
Block Measurement Selector (MA) It is used to separate the vector signal and convert units of measurement (for pressure and temperature). To access the measurement results, connect the input port F of the unit Measurement Selector (MA) to the output port of the F signal of the unit with a finite internal volume of humid air.
Ports
Output
#
D
—
mass ratio of water droplets to moist air, dimensionless value
scalar
Details
An outlet port for the mass ratio of water droplets to moist air.
| Data types |
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| Complex numbers support |
No |
#
T
—
temperature, K
scalar
Details
Output port for temperature measurement.
| Data types |
|
| Complex numbers support |
No |
#
P
—
pressure, Pa
scalar
Details
Output port for pressure measurement.
| Data types |
|
| Complex numbers support |
No |
#
G
—
gas level
scalar
Details
An output port for measuring the amount of impurity gases. The measurement method is set by the parameter Measured trace gas specification.
| Data types |
|
| Complex numbers support |
No |
#
W
—
humidity
scalar
Details
Output port for humidity measurement. The measurement method is set by the parameter Measured humidity specification.
| Data types |
|
| Complex numbers support |
No |
Input
#
F
—
a signal containing the results of measurements of pressure, temperature, humidity, and the amount of impurity gases
vector
Details
Connect this port to the signal output port F of the unit with a finite internal volume of humid air to access the measurement results.
Units with a finite volume of humid air have an output signal port F, which outputs a vector signal containing the results of measurements of pressure, temperature, humidity and the amount of impurity gases inside the component. Block Measurement Selector (MA) it is used to separate this vector signal.
| Data types |
|
| Complex numbers support |
No |
Parameters
Main
#
Measured trace gas specification —
method of measuring the amount of impurity gases
Mass fraction | Mole fraction
Details
Sets the measurement method:
-
Mass fraction― the scalar signal on port G is equal to the mass fraction of impurity gases. -
Mole fraction― the scalar signal on port G is equal to the molar fraction of impurity gases.
| Values |
|
| Default value |
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| Program usage name |
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| Evaluatable |
No |
#
Measured humidity specification —
humidity measurement method
Relative humidity | Specific humidity | Mole fraction | Humidity ratio
Details
Sets the measurement method:
-
Relative humidity― the scalar signal on port W is equal to relative humidity. -
Specific humidity― the scalar signal on port W is equal to the specific humidity. -
Mole fraction― the scalar signal on port W is equal to the molar fraction of humidity. -
Humidity ratio― the scalar signal on port W is equal to the humidity coefficient.
| Values |
|
| Default value |
|
| Program usage name |
|
| Evaluatable |
No |