Turbidity sensor
First Claim
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1. A turbidity sensor for underwater measurements, comprising:
- a watertight housing;
a light emitting diode;
a first light focusing device for focusing a light emitted from the diode and passing the focused light into to-be-measured water;
a second light focusing device for collecting at least one scattered light resulted form the focused light when passing the water;
a photodiode for receiving the collected light thereby generating electronic signals; and
an electronic board for processing the electronic signals.
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Abstract
A turbidity sensor for underwater measurements is provided with a watertight housing, a light emitting diode, a first light focusing device for focusing a light emitted from the diode and passing the focused light into to-be-measured water, a second light focusing device for collecting at least one scattered light resulted form the focused light when passing the water, a photodiode for receiving the collected light thereby generating electronic signals, and an electronic board for processing the electronic signals.
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Citations
46 Claims
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1. A turbidity sensor for underwater measurements, comprising:
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a watertight housing;
a light emitting diode;
a first light focusing device for focusing a light emitted from the diode and passing the focused light into to-be-measured water;
a second light focusing device for collecting at least one scattered light resulted form the focused light when passing the water;
a photodiode for receiving the collected light thereby generating electronic signals; and
an electronic board for processing the electronic signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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15. The turbidity sensor according to claim 15, wherein the infrared GaAlAs emitter and the GaAlAs photodiode have a preferred spectral bandwidth of emission of 820 to 890 nm.
Specification