METAL ATMOSPHERIC PRESSURE COLUMNS

Brand	Owner	Address	Description
IPSCO	SYNALLOY CORPORATION	Suite 201 4510 Cox Road Glen Allen VA 23060	METAL ATMOSPHERIC AND PRESSURE COLUMNS, TOWERS AND REACTORS FOR INDUSTRIAL USE;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

To identify a failed atmospheric pressure sensor in a control apparatus having two atmospheric pressure detecting systems as a failsafe. A first comparing unit outputs an abnormal signal when a difference between atmospheric pressures detected by two sensors is larger than a threshold value. An atmospheric pressure estimating unit estimates the atmospheric pressure from an engine revolution, a throttle opening, and a manifold pressure. The difference calculating unit calculates a difference between the detected atmospheric pressure and the estimated atmospheric pressure. The difference calculating unit calculates a difference between the detected atmospheric pressure and the estimated atmospheric pressure. When an abnormal signal is outputted from the first comparing unit, a second comparing unit compares the differences in response thereto. The failed atmospheric pressure sensor is identified according to which one of the differences is larger.