Engee documentation

Absolute Pressure Sensor (IL)

Pressure sensor that measures differential pressure, absolute pressure or gauge pressure.

Absolute Pressure Sensor (IL)

absolute pressure sensor (il)

Pressure Difference Sensor (IL)

pressure difference sensor (il)

Description

The Pressure Sensor (IL) unit is an ideal sensor that measures pressure in an isothermal liquid network. There is no mass flow through the sensor.

The unit icon changes depending on the value of the Pressure Measurements parameter, which controls the type of measurement and sensor configuration:

  • When Pressure difference is selected, the P signal port outputs the result of the pressure difference measurement at the sensor ports:

    where:

    and are the pressures at the sensor ports. The result is positive if the value on port A is greater than the value on port B.

  • When Absolute pressure is selected, the Pa signal port outputs the result of the absolute pressure measurement on port A:

    where:

    - A port pressure measured relative to absolute zero.

    In this configuration, the sensor has only one isothermal liquid port.

  • When Gauge pressure is selected, the Pg signal port outputs the result of the gauge pressure measurement at port A:

    where:

    - A port pressure measured relative to absolute zero.

    - atmospheric pressure.

    In this configuration, the sensor has only one isothermal liquid port.

Ports

Output

P - pressure difference, Pa
scalar

Output port of the measured pressure difference value signal.

Dependencies

To use this port, set Pressure Measurements to `Pressure difference'.

Pa - absolute pressure, Pa
scalar

Output port of the measured absolute pressure value signal.

Dependencies

To use this port, set Pressure Measurements to `Absolute pressure'.

Pg is the overpressure, Pa
scalar

Output port of the measured overpressure signal.

Dependencies

To use this port, set Pressure Measurements to Gauge pressure.

Non-directional

A - sensor input
isothermal liquid

Isothermal liquid port, corresponds to the sensor input.

B - sensor input
isothermal liquid

Isothermal liquid port, corresponds to the sensor input.

Dependencies

To use this port, set Pressure Measurements to `Pressure difference'.

Parameters

Pressure Measurements - type of pressure measurement
Pressure difference (by default)` | Absolute pressure | Gauge pressure

Select the pressure measurement type:

  • Pressure difference - pressure difference. Selecting this option opens the P signal output port and a second isothermal liquid port B. The measurement is positive when the value on port A is greater than the value on port B.

  • Absolute pressure - absolute pressure on port A. When this option is selected, the Pa signal output port is displayed.

  • Gauge pressure - overpressure at port A. Selecting this option displays the Pg signal output port.

Examples