Precalibrated flow meter with airflow compensator
First Claim
1. An air flow compensator which comprises a fluid flow passage having an inlet end and an outlet end;
- a main slide element having a magnetic insert in one end thereof;
a proximity sensor for detecting the proximity of the magnetic insert;
a secondary slide element positioned on the main slide element and within a fluid flow passage;
a first spring element that biases both the main slide element and the secondary slide element away from the proximity sensor; and
a second spring element that biases only the secondary slide element away from the proximity sensor.
1 Assignment
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Accused Products
Abstract
An air flow compensator for use with flow meters which includes a main slide element, a secondary slide element and first and second spring elements. The main slide element includes a magnetic insert in one end thereof and is movable toward a proximity sensor that detects the proximity of the magnetic insert. The first spring element biases both the main slide element and the secondary slide element away from the proximity sensor and the second spring element biases only the secondary slide element away from the proximity sensor. The secondary slide element is both movable together with the first slide element and independently movable with respect to the main slide element.
45 Citations
17 Claims
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1. An air flow compensator which comprises a fluid flow passage having an inlet end and an outlet end;
- a main slide element having a magnetic insert in one end thereof;
a proximity sensor for detecting the proximity of the magnetic insert;
a secondary slide element positioned on the main slide element and within a fluid flow passage;
a first spring element that biases both the main slide element and the secondary slide element away from the proximity sensor; and
a second spring element that biases only the secondary slide element away from the proximity sensor. - View Dependent Claims (2, 3)
- a main slide element having a magnetic insert in one end thereof;
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4. An air flow compensator which comprises:
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a fluid flow passage having an inlet end and an outlet end;
a proximity sensor positioned adjacent the outlet end of the fluid flow passage;
a main slide element having a magnetic element in one end, the main slide element moveable between a first position in which the magnetic element is spaced away from the proximity sensor and a second position in which the magnetic element is near the proximity sensor;
a secondary slide element positioned on the main slide element for movement therewith and for independent movement along the main slide element, the secondary slide element being positioned within the fluid flow passage so as to determine the amount of fluid that can flow therethrough;
a first spring element that biases the secondary slide toward the inlet end of the fluid flow passage; and
a second spring element that biases the main slide element toward the inlet end of the fluid flow passage. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification