A method for detecting a replacement of a differential pressure sensor arranged for measuring a differential pressure across a filter of an aftertreatment system of a vehicle. The method includes determining a sensor offset value being an offset from a sensor value measured with a differential pressure sensor; adding an adaption value to the measured sensor value to compensate for the offset value to centre the sensor value around a predetermined level; if a sum of a subsequently measured sensor value and the adaption value exceeds a limit value, concluding that the differential pressure sensor has been replaced.

Provided is a substrate treating facility, including: an index module on which a substrate is loaded or unloaded; a treating module for performing a substrate treatment on the substrate loaded into the index module; a buffer chamber disposed between the index module and the treating module; and a differential pressure measuring device for measuring a differential pressure between a pressure at a specific position inside the substrate treating facility and a pressure at a reference position serving as a reference, in which the differential pressure measuring device is provided outside the substrate treating facility.

Provided is a substrate treating facility, including: an index module on which a substrate is loaded or unloaded; a treating module for performing a substrate treatment on the substrate loaded into the index module; a buffer chamber disposed between the index module and the treating module; and a differential pressure measuring device for measuring a differential pressure between a pressure at a specific position inside the substrate treating facility and a pressure at a reference position serving as a reference, in which the differential pressure measuring device is provided outside the substrate treating facility.

A sub-slab monitor includes a housing configured to extend through a foundation such that an upper surface of the housing is in contact with an indoor air environment and a lower surface of the housing is in contact with a sub-slab environment. A pressure sensor contained within the housing is configured to measure a differential pressure between the indoor air environment and the sub-slab environment, and electronics contained within the housing include a communication circuitry for communicating differential pressure data from the pressure sensor to a computer and a battery. A system and method for sub-slab monitoring includes providing and installing one or more sub-slab monitors and uploading differential pressure data from the one or more sub-slab monitors onto a central computer.

A sub-slab monitor includes a housing configured to extend through a foundation such that an upper surface of the housing is in contact with an indoor air environment and a lower surface of the housing is in contact with a sub-slab environment. A pressure sensor contained within the housing is configured to measure a differential pressure between the indoor air environment and the sub-slab environment, and electronics contained within the housing include a communication circuitry for communicating differential pressure data from the pressure sensor to a computer and a battery. A system and method for sub-slab monitoring includes providing and installing one or more sub-slab monitors and uploading differential pressure data from the one or more sub-slab monitors onto a central computer.

A system and method for detecting faulty engine anti-ice sensor is disclosed and may include obtaining first pressure data representing a first pressure over a period of time at a first engine anti-ice pressure sensor on an aircraft engine. The method may further include obtaining second pressure data representing a second pressure over the period of time at a second engine anti-ice pressure sensor on the aircraft engine. The method may also include generating a variance value based at least partially on a variance of a difference between the first pressure data and the second pressure data. The method may include providing an indication that liquid is within the first engine anti-ice pressure sensor or the second engine anti-ice pressure sensor when the variance value exceeds a threshold.

A system and method for detecting faulty engine anti-ice sensor is disclosed and may include obtaining first pressure data representing a first pressure over a period of time at a first engine anti-ice pressure sensor on an aircraft engine. The method may further include obtaining second pressure data representing a second pressure over the period of time at a second engine anti-ice pressure sensor on the aircraft engine. The method may also include generating a variance value based at least partially on a variance of a difference between the first pressure data and the second pressure data. The method may include providing an indication that liquid is within the first engine anti-ice pressure sensor or the second engine anti-ice pressure sensor when the variance value exceeds a threshold.

A method for detecting a replacement of a differential pressure sensor arranged for measuring a differential pressure across a filter of an aftertreatment system of a vehicle. The method includes determining a sensor offset value being an offset from a sensor value measured with a differential pressure sensor; adding an adaption value to the measured sensor value to compensate for the offset value to centre the sensor value around a predetermined level; if a sum of a subsequently measured sensor value and the adaption value exceeds a limit value, concluding that the differential pressure sensor has been replaced.

A method for detecting a replacement of a differential pressure sensor arranged for measuring a differential pressure across a filter of an aftertreatment system of a vehicle. The method includes determining a sensor offset value being an offset from a sensor value measured with a differential pressure sensor; adding an adaption value to the measured sensor value to compensate for the offset value to centre the sensor value around a predetermined level; if a sum of a subsequently measured sensor value and the adaption value exceeds a limit value, concluding that the differential pressure sensor has been replaced.

An air filter includes filter media, a sensor, and circuitry coupled to the sensor, the circuitry configured to receive data from the sensor representative of the condition of the filter media and wirelessly transmit such data. The data may be received by a device with a display to use the information to present an indication of the filter media condition to a user.