Method of and apparatus for multiple detector measurement of an environmental parameter
First Claim
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1. A method of measuring and evaluating a parameter of an atmosphere which comprises the steps of:
- continuously determining the magnitude of said parameter with a first measuring system sensitive to said parameter;
at time-spaced intervals measuring said parameter and determining the magnitude thereof with a second measuring system sensitive to said parameter and producing an output signal; and
adjusting at least one functional state of said first measuring system in response to said signal.
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Abstract
Mine ventilating atmosphere parameters, e.g. methane concentration, can be measured according to the invention with an arrangement which has a continuously operating first measuring system to which a second measuring system is periodically connected to measure the same parameter with its output being utilized to control the zero point or sensitivity setting of the first measuring system.
16 Citations
16 Claims
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1. A method of measuring and evaluating a parameter of an atmosphere which comprises the steps of:
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continuously determining the magnitude of said parameter with a first measuring system sensitive to said parameter; at time-spaced intervals measuring said parameter and determining the magnitude thereof with a second measuring system sensitive to said parameter and producing an output signal; and adjusting at least one functional state of said first measuring system in response to said signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for measuring and evaluating a parameter of a mine atmosphere which comprises:
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a first measuring system exposed to said atmosphere and responsive to said parameter for continuously measuring the magnitude thereof and reporting said magnitude; a second measuring system connectable to detect said parameter at time-spaced intervals for producing an output representing the magnitude of said parameter; and a means responsive to said output of said second measuring system for controlling a functional state of said first measuring system. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification