| 摘要 |
The invention relates to a portable turbidimetric system meant to in-situ determining the concentration of solution suspensions by a method established to be optimal, such as a turbidimetric or a nephelometric method. According to the invention, the system consists of a first photo-barrier for determining turbidity by measuring the radiation emitted by a sample, which consists of a LED () emitting a monochromatic radiation having a wavelength of 860 nm and a receiving diode () arranged under an angle of 90° in respect of the radiation direction, a second photo-barrier for determining turbidity by measuring the radiation passing through the sample, which consists of a LED () emitting a monochromatic radiation having a wavelength of 860 nm and a receiving diode () arranged under an angle of 180° in respect of the radiation direction, and a third photo-barrier meant to determine turbidity by nephelometry, by measuring the radiation passing through the sample, which consists of a LED () emitting a monochromatic radiation having a wavelength of 860 nm and a receiving diode () arranged under an angle of 120° in respect of the radiation direction, the optical elements of the photo-barriers being mounted within some cylindrical orifices cut into two dies () of resiliently clamping jaws which also comprise two arms (), two channels () for electrical connections, two steel sheet covers (), a bolt (), a spring () and an electric cable () making the connection with an electronic unit (). |
