Temperature compensated pressure switch (TCPS)
First Claim
1. A temperature compensated pressure switch for determining and analyzing an amount of material within a vessel comprising:
- a first control unit;
a pressure sensor connected to the first control unit outputting a first pressure data;
a temperature sensor connected to the first control unit outputting a first temperature data; and
a first storage unit connected to the first control unit storingminimum pressure data corresponding to temperature data, the first temperature data at periodic intervals, maximum rate of temperature change values, first substitute rate of temperature change values corresponding to maximum rate of temperature change values, minimum rates of temperature change values, and second substitute rate of temperature change values corresponding to minimum rates of temperature change values,wherein when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is above a maximum rate of temperature change value, the first control unit substitutes a second temperature data, based on a first substitute rate of temperature change value, for the first temperature data for a period of time, and when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is below a minimum rate of temperature change value, the first control unit substitutes a different second temperature data, based on a second substitute rate of temperature change value, for the first temperature data for a period of time, andwherein the first control unit outputs a first signal indicating the amount of material is acceptable when the first pressure data is above the minimum pressure data and outputs a second signal indicating the amount of material is unacceptable when the first pressure data is not above the minimum pressure data.
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Accused Products
Abstract
A temperature compensated pressure switch (“TCPS”) with thermal lag compensation, trend indication, and forecast analysis. The TCPS has a first control unit, a pressure sensor connected to the first control unit outputting a first pressure data, a temperature sensor connected to the first control unit outputting a first temperature data, and a first storage unit connected to the first control unit storing: minimum and maximum pressure data corresponding to temperature data and rate of temperature change values. The first control unit can substitute a second temperature data, for the first temperature data for a period of time. The first control unit also outputs a first signal indicating the amount of material is acceptable when the first pressure data is above the minimum pressure data and outputs a second signal indicating the amount of material is unacceptable when the first pressure data is not above the minimum pressure data.
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Citations
25 Claims
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1. A temperature compensated pressure switch for determining and analyzing an amount of material within a vessel comprising:
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a first control unit; a pressure sensor connected to the first control unit outputting a first pressure data; a temperature sensor connected to the first control unit outputting a first temperature data; and a first storage unit connected to the first control unit storing minimum pressure data corresponding to temperature data, the first temperature data at periodic intervals, maximum rate of temperature change values, first substitute rate of temperature change values corresponding to maximum rate of temperature change values, minimum rates of temperature change values, and second substitute rate of temperature change values corresponding to minimum rates of temperature change values, wherein when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is above a maximum rate of temperature change value, the first control unit substitutes a second temperature data, based on a first substitute rate of temperature change value, for the first temperature data for a period of time, and when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is below a minimum rate of temperature change value, the first control unit substitutes a different second temperature data, based on a second substitute rate of temperature change value, for the first temperature data for a period of time, and wherein the first control unit outputs a first signal indicating the amount of material is acceptable when the first pressure data is above the minimum pressure data and outputs a second signal indicating the amount of material is unacceptable when the first pressure data is not above the minimum pressure data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A temperature compensated pressure switch for determining and analyzing an amount of material within a vessel comprising:
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a first control unit; a wireless transmission unit connected to the first control unit; a pressure sensor connected to the first control unit outputting a first pressure data; a temperature sensor connected to the first control unit outputting a first temperature data; a first storage unit connected to the first control unit storing minimum pressure data and maximum pressure data corresponding to temperature data, the first temperature data at periodic intervals, maximum rate of temperature change values, first substitute rate of temperature change values corresponding to maximum rate of temperature change values, minimum rates of temperature change values, and second substitute rate of temperature change values corresponding to minimum rates of temperature change values, wherein when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is above a maximum rate of temperature change value, the first control unit substitutes a second temperature data, based on a first substitute rate of temperature change value, for the first temperature data for a period of time, and when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is below a minimum rate of temperature change value, the first control unit substitutes a different second temperature data, based on a second substitute rate of temperature change value, for the first temperature data for a period of time, and wherein the first control unit outputs a first signal indicating the amount of material is acceptable when the first pressure data is above the minimum pressure data and below the maximum pressure data and outputs a second signal indicating the amount of material is unacceptable when the first pressure data is not above the minimum pressure data and not below the maximum pressure data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A system for storing and monitoring an amount of material comprising:
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a vessel for storing the material; and a temperature compensated pressure switch mounted on the vessel comprising; a first control unit; a pressure sensor connected to the first control unit outputting pressure data; a temperature sensor connected to the first control unit outputting a first temperature data; and a first storage unit connected to the first control unit storing minimum pressure data corresponding to temperature data, the first temperature data at periodic intervals, maximum rate of temperature change values, first substitute rate of temperature change values corresponding to maximum rate of temperature change values, minimum rates of temperature change values, and second substitute rate of temperature change values corresponding to minimum rates of temperature change values, wherein when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is above a maximum rate of temperature change value, the first control unit substitutes a second temperature data, based on a first substitute rate of temperature change value, for the first temperature data for a period of time, and when the first control unit determines, based on the first temperature data stored in the first storage unit, that a rate of temperature change value is below a minimum rate of temperature change value, the first control unit substitutes a different second temperature data, based on a second substitute rate of temperature change value, for the first temperature data for a period of time, and wherein the first control unit outputs a first signal indicating the amount of material is acceptable when the pressure data is above the minimum pressure data and outputs a second signal indicating the amount of material is unacceptable when the pressure data is not above the minimum pressure data. - View Dependent Claims (23, 24, 25)
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Specification