An interlock data collection and calibration system has a device computer, a gas delivery system, and a data port. The device computer has a computer processor and a computer memory. The gas delivery system delivers a gas sample to an ignition interlock device. The data port is operably connected with the device computer for enabling sample data from the ignition interlock device to be transmitted to the device computer. A calibration program operably installed on the computer memory receives the sample data, calibrates the ignition interlock device, and generates confirmation data, which is stored in a local database.

A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.

A pressure type flowmeter includes a fluid resistance element provided in a flow path through which fluid flows, and in which a resistance flow path communicating with the flow path is formed, an upstream-side pressure sensor that detects upstream-side pressure of the fluid resistance element, and a downstream-side pressure sensor that detects downstream-side pressure of the fluid resistance element, in which the fluid resistance element is sandwiched and fixed by a pair of sandwiching components sealing components having a sheet-like shape are provided between the fluid resistance element and the sandwiching components and protrusions that partially press the sealing components are formed on at least one of the fluid resistance element and the sandwiching components.

A pressure type flowmeter includes a fluid resistance element provided in a flow path through which fluid flows, and in which a resistance flow path communicating with the flow path is formed, an upstream-side pressure sensor that detects upstream-side pressure of the fluid resistance element, and a downstream-side pressure sensor that detects downstream-side pressure of the fluid resistance element, in which the fluid resistance element is sandwiched and fixed by a pair of sandwiching components sealing components having a sheet-like shape are provided between the fluid resistance element and the sandwiching components and protrusions that partially press the sealing components are formed on at least one of the fluid resistance element and the sandwiching components.

Disclosed is an infusion pump which may include a native pumping mechanism to drive fluids through a functionally associated conduit, at least one native sensor to sense a physical characteristic of the fluid within the conduit and computing circuitry having a decalibration test mode to determine whether the infusion pump is decalibrated. The computing circuitry may be adapted to receive output from at least one native sensor during the decalibration test mode.

An interlock data collection and calibration system has a device computer, a gas delivery system, and a data port. The device computer has a computer processor and a computer memory. The gas delivery system delivers a gas sample to an ignition interlock device. The data port is operably connected with the device computer for enabling sample data from the ignition interlock device to be transmitted to the device computer. A calibration program operably installed on the computer memory receives the sample data, calibrates the ignition interlock device, and generates confirmation data, which is stored in a local database.

An interlock data collection and calibration system has a device computer, a gas delivery system, and a data port. The device computer has a computer processor and a computer memory. The gas delivery system delivers a gas sample to an ignition interlock device. The data port is operably connected with the device computer for enabling sample data from the ignition interlock device to be transmitted to the device computer. A calibration program operably installed on the computer memory receives the sample data, calibrates the ignition interlock device, and generates confirmation data, which is stored in a local database.

A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.

A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.

A flow rate measurement system outputs a measurement value which represents a magnitude of a flow rate and a flow direction of a fluid that flows through a particular main passage. The system includes a bypass passage disposed in the main passage, a detection unit disposed in the bypass passage that outputs a detection value corresponding to a magnitude of a flow rate and a flow direction of the fluid flowing through the bypass passage, and a calculation unit that, by using the detection value, calculates the measurement value by compensating as needed for a delay in the change in flow rate in the bypass passage with respect to the change in flow rate in the main passage. The compensation is based on whether a change of flow direction has occurred in the main passage or the bypass passage.