A system for testing and validating the performance of a pressure sensor includes a test fixture operatively connected to the pressure sensor, and the pressure sensor is configured to identify a fluid pressure relative to an atmospheric pressure. A microcontroller is in electrical communication with the test fixture and the pressure sensor, and the microcontroller is configured to cause the test fixture to introduce air and/or vapor through the pressure sensor at a known fluid pressure. The microcontroller is also configured to receive the identified fluid pressure from the pressure sensor, the identified fluid pressure being based on the air and/or vapor flowing through the pressure sensor. A power source is in electrical communication with the microcontroller, and a display is in electrical communication with the microcontroller. The display is configured to display results to a user, the results comprising the determination of the performance of the pressure sensor.

Aiming to more easily perform calibration of a sensor output from a pressure sensor, the calibration being necessitated due to the occurrence of sedimentation, a resonance point measurement unit (122) measures a resonance point of a diaphragm (112) on the basis of the result obtained by performing measurement of a constant pressure using the pressure sensor while a power supply frequency is changed, a characteristic calculation unit (123) calculates, on the basis of the measured resonance point, an elastic modulus of the diaphragm (112) at the time of the measurement of the resonance point, and a correction unit (124) calculates a corrected sensor sensitivity resulting from correcting a sensor sensitivity of a sensor chip (101) on the basis of the elastic modulus calculated by the characteristic calculation unit (123).

A differential pressure measuring arrangement, comprising: a differential pressure measuring transducer; a first differential pressure line supplying the differential pressure measuring transducer with the first media pressure; a second differential pressure line supplying the differential pressure measuring transducer with the second media pressure; a temperature sensor; and a processing and evaluation unit for processing the differential pressure measurement signal and the temperature signal; wherein the processing and evaluation unit is adapted to determine a significant correlation between a change of the temperature signal and the differential pressure signal and to consider such as indication of a plugged differential pressure line and is further adapted to test whether a considered indication of a plugged differential pressure line can be verified based on additional process data, which preferably were not registered by the differential pressure measuring transducer.

A method for monitoring a cylinder pressure sensor, in which method the sensor value is checked for admissibility and inadmissibility in a predefinable crankshaft angle range, when admissibility is detected the cylinder pressure sensor is used further and when inadmissibility is detected the cylinder pressure sensor is deactivated. A first sensor value of the cylinder pressure sensor is set as a start value, and a second sensor value is set as a stop value, a plateau range is determined from the number of sampling steps between the start value and the stop value, and the plateau range is set as decisive for the admissibility or inadmissibility of the sensor values.

The present disclosure illustrates a calibration circuit for a pressure sensing device. The calibration circuit, via at least one passive component installed in the pressure sensing device, obtains a calibration gain factor of at least one converter also installed in the pressure sensing device, and when the pressure sensing device is in a regular operating mode, the calibration gain factor can be used to calibrate the output of the converter, so that a sensing signal inputted into the pressure sensing device can be correctly converted to a relevant pressure value.

A sensor test apparatus having excellent versatility is provided.

The sensor test apparatus 30 includes a first application unit 40 including a first application device 42 including a socket 445 to which the sensor 90 is electrically connected, and a pressure chamber 43 which applies pressure to the sensor 90, a test unit 35 which tests the sensor 90 via the socket 445, a conveying robot 33 which conveys the sensor 90 into and out of the first application unit 40, and an apparatus main body 301 which houses the first application unit 40, the test unit 35 and the conveying robot 33, and the apparatus main body 301 has an opening 306d which allows the first application unit 40 to be inserted into the apparatus main body 301 and removed from the apparatus main body 301 to an outside.

A flaw detection system may include a dedicated monitor volume within a structural component of a system. The monitor volume may establish an air tight space bounded by at least one joint where the joint establishes a portion of a boundary of the air tight space and is in fluid communication with the air tight space. The system may also include a pressure sensing device configured for sensing the pressure in the dedicated monitor volume. A method of monitoring a system for flaw development may include monitoring a pressure sensor configured to sense the pressure in a dedicated monitor volume of a structural component of a system. The method may also include inspecting the structural component to identify a flaw location when the pressure sensor identifies a change in pressure in the dedicated monitor volume.

A respiratory apparatus evaluates accuracy of a pressure sensor, such as when only a single pressure sensor is provided. The accuracy of the pressure sensor may be assessed based on pressure measurement obtained from the pressure sensor and a subordinate or secondary characteristic of the respiratory device such as altitude or atmospheric pressure. A controller or processor may calculate the altitude of the respiratory device based in part on the pressure measurement. In some embodiments, the assessment of the pressure sensor may involve an evaluation of the calculated altitude. In some cases, the assessment of the pressure sensor may involve determining an estimated pressure based on a calculated altitude, and comparing the pressure measurement obtained from the pressure sensor with the estimated pressure.

A pressure measurement device comprising a pressure sensor of a first type and a pressure sensor of a second type different from the first, which sensors are mounted on a common support in order to be subjected to the same pressure, in which the pressure sensor of the first type is of the capacitive type, the device being characterized in that the pressure sensor of the first type comprises at least one membrane and a first internal channel passing through the common support, a second internal channel bringing a fluid to the membrane being in fluid flow connection with the first internal channel. A calibration method associated with the device.

The present disclosure illustrates a calibration method and circuit for a pressure sensing device. The calibration method, via at least one passive component (e.g., the default capacitor) installed in the pressure sensing device, obtains a calibration gain factor of at least one converter also installed in the pressure sensing device, and when the pressure sensing device is in a regular operating mode, the calibration gain factor can be used to calibrate the output of the converter, so that a sensing signal inputted into the pressure sensing device can be correctly converted to a relevant pressure value.