Fan air flow measurement system
AssigneeRuskin Company
InventorsTim Vogel, Josiah Wiley, Jeff Beneke
Life of this patent
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Abstract
A fan air flow measurement sensor comprising a housing having a sensor cap, a thermistor pair disposed within the housing, each thermistor projecting through the sensor cap a predetermined distance above the sensor cap, a flange extending normally from the housing, the flange engagable with a mounting surface, a sensor circuit comprising a multiplexer for controlling each thermistor, and for measuring a condition of each thermistor, and for receiving and transmitting signals, and a cable for connecting the sensor to a multiplexing circuit.
Claims9
A fan air flow sensor comprising:
- a housing having a sensor cap;
- a thermistor pair disposed within the housing and in housing potting to prevent movement of the thermistor pair in the housing, each thermistor projecting through the sensor cap a predetermined distance above the sensor cap up to approximately 0.03 inches, the sensor cap disposed to protect the thermistor pair from airborne particulate;
- a flange extending normally from the housing, the flange for flush mounting the housing on a mounting surface;
- a sensor circuit comprising a multiplexer for controlling each thermistor, and for measuring a condition of each thermistor, and for receiving and transmitting signals, and a microprocessor to calculate air velocity and temperature;
- a control transmitter connected to the multiplexer for displaying the air velocity and temperature;
- and
- a cable for connecting the sensor to a multiplexing circuit.
A fan air flow measurement system comprising:
- a fan having an inlet;
- a sensor having a substantially flush mounting to a surface of the inlet;
- the sensor comprising a housing having a sensor cap;
- a thermistor pair disposed within the housing and in housing potting to prevent movement of the thermistor pair in the housing, each thermistor projecting through the sensor cap a predetermined distance above the sensor cap up to approximately 0.03 inches, the sensor cap disposed to protect the thermistor pair from airborne particulate;
- a flange extending normally from the housing, the flange engagable with a mounting surface;
- a sensor circuit comprising a multiplexer for controlling each thermistor, and for measuring a condition of each thermistor, and for receiving and transmitting signals;
- a cable for connecting the sensor to a multiplexer circuit;
- the multiplexer circuit connected to a transmitter circuit.
Dependencies are inferred from the claim text.