Level indicator for liquid reservoirs
First Claim
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1. A level indicator for a liquid reservoir having liquid-retaining walling defining said reservoir and used in a medical apparatus, comprising:
- a level responsive component which comprises a dipole including a carrier having means for mounting said dipole on an external surface of said liquid reservoir walling, an oscillator set to an operating frequency at least as high as 50 MHz and including said dipole integrated therein, and wherein said dipole is adjusted to said oscillating frequency and responsive to a preset limiting value and adapted to change one of a phase condition and an amplitude condition decisive for oscillation of said oscillator in response to said preset limiting value being passed.
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Abstract
A level indicator for blood reservoirs, in particular of medical apparatus, having a level-responsive component to be provided on the wall of the blood reservoir is provided with an oscillator set to an operating frequency of greater than or equal to 50 MHz and having integrated into its circuit the level-responsive component which, when a preset limiting value is passed, changes the phase condition or amplitude condition decisive for the oscillation of the oscillator.
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Citations
30 Claims
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1. A level indicator for a liquid reservoir having liquid-retaining walling defining said reservoir and used in a medical apparatus, comprising:
a level responsive component which comprises a dipole including a carrier having means for mounting said dipole on an external surface of said liquid reservoir walling, an oscillator set to an operating frequency at least as high as 50 MHz and including said dipole integrated therein, and wherein said dipole is adjusted to said oscillating frequency and responsive to a preset limiting value and adapted to change one of a phase condition and an amplitude condition decisive for oscillation of said oscillator in response to said preset limiting value being passed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
Specification