Absolute Pressure & Temperature Sensor (TL)
Pressure and temperature measurement in thermal liquid networks.
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Description
The Pressure & Temperature Sensor (TL) unit is an ideal sensor that measures pressure and temperature in a network of thermal liquid. There is no mass or energy flow through the sensor.
The sensor contains an implicit reference node, which means that only port A is required for absolute pressure and temperature measurements as well as overpressure.
Port B is used if the pressure or temperature difference between two nodes in the model is to be measured. Measurements are positive when the pressure and temperature values in port A are greater than the values in port B.
Four signal ports are available to output measurement data:
-
Pa - absolute pressure.
-
Pg - overpressure.
-
P - pressure difference.
-
T - temperature (temperature difference).
These ports are displayed on the unit icon depending on the unit settings. Adjust the unit parameters to display only those ports that are required for measurements in a particular model.
Ports
Non-directional
A - sensor input
thermal liquid
Thermal liquid port, corresponds to the sensor input.
B - sensor output
thermal liquid.
Thermal liquid port, corresponds to the sensor output. Measurements are positive when the pressure and temperature values in port A are greater than the values in port B.
Dependencies
To use this port, set the Measurement reference parameters to `Difference'.
Output
Pa - absolute pressure, Pa
scalar
Output port. Outputs the result of absolute pressure measurement.
Dependencies
To use this port, set the Measurement reference parameter to Absolute, select the Pressure checkbox, and set the Pressure type parameter to Absolute pressure.
Pg - overpressure, Pa
scalar
Output port. Outputs the result of gauge pressure measurement.
Dependencies
To use this port, set the Measurement reference parameter to `Absolute', select the Pressure checkbox, and set the Pressure type parameter to `Gauge pressure'.
P - pressure difference, Pa
scalar
Output port. Outputs the result of pressure difference measurement.
Dependencies
To use this port, set the Measurement reference parameters to Difference and select the Pressure checkbox.
T - temperature, K
scalar
Output port. Outputs the result of temperature measurement, if the value of Measurement reference parameters is set to Absolute — absolute temperature is measured, if Difference — temperature difference between ports A and B is measured.
Dependencies
To use this port, select the Temperature checkbox.
Parameters
Measurement reference - absolute value or difference measurement
Absolute (by default) | Difference
Specifies the method of pressure and temperature measurement:
-
Absolute- the sensor measures absolute or gauge pressure and temperature at port A. The sensor contains an implicit reference node, which means that only port A is needed for pressure or temperature measurements. -
Difference- the sensor measures the difference in pressure and temperature between two nodes in the model. When this parameters is selected, the B port is displayed on the block icon.
Pressure - enable or disable the output port for pressure measurement
On (By default) | Off.
Checking this box enables the Pa, Pg or P output port to measure pressure.
Pressure type - the type of pressure to be measured
Absolute pressure (by default) | Gauge pressure.
Select whether the sensor is measuring absolute pressure or gauge pressure:
-
Absolute pressure- the sensor measures absolute pressure at port A. When this parameter is selected, the Pa port is displayed on the unit icon. -
Gauge pressure- the sensor measures the gauge pressure at port A. When this parameter is selected, the Pg port is displayed on the unit icon.
Dependencies
To use this parameter, set the Measurement reference parameters to `Absolute' and select the Pressure checkbox.
Temperature - Enable or disable the output port for temperature (temperature difference) measurement
`Off (By default)
When this checkbox is selected, the T output port enabling temperature (temperature difference) measurement is enabled.