Abstract:
During the rinse cycle of a re-circulating dishwashing machine (132), water is simultaneously diverted into a dispenser (100) as water is delivered to the rinse arms (133) of the dishwashing machine (132). The cavity (118) of the dispenser (100) contains a solid detergent block (125) and is flooded with water during the rinse cycle. The water contacts the detergent (125) during the rinse cycle to create a use solution, and the use solution exits the dispenser (100) and flows into a wash water storage tank (135) of the dishwashing machine (132). During the wash cycle of the dishwashing machine (132), the wash water containing the use solution from the dispenser (100) is pumped into the wash arms (134). The wash water becomes diluted during the subsequent rinse cycle, however, the water diverted into the dispenser (100) during the rinse cycle replenishes the detergent (125) concentration in the wash water for use in the subsequent wash cycle.
Abstract:
A UV absorption spectrometer includes a housing, a controller, and a sensor unit including an ultraviolet light source, an analytical area in an analytical cell or in running water or gaseous medium, and an UV wavelength separator including a UV detector. An ultraviolet light in a wavelength range of 200-320 nm emits from the light source through the analytical area to the wavelength separator, and the controller transforms output signals from the UV detector into absorbance values or optical densities for two or more wavelengths in the wavelength range, calculates differences of said absorbance values or optical densities, determines a concentration of a chemical in the solution with calibration constants found for a known concentration of the chemical and said differences of said absorbance values or optical densities.
Abstract:
A UV absorption spectrometer includes a housing, a controller, and a sensor unit including an. ultraviolet light source, an analytical area in an analytical cell or in running water or gaseous medium, and an UV wavelength separator including a UV detector. An ultraviolet light in a wavelength range of 200-320 nm emits from the light source through the analytical area to the wavelength separator, and the controller transforms output signals from the UV detector into absorbance values or optical densities for two or more wavelengths in the wavelength range, calculates differences of said absorbance values or optical densities, determines a concentration of a chemical in the solution with calibration constants found for a known concentration of the chemical and said differences of said absorbance values or optical densities.
Abstract:
An ultraviolet (UV) fluorometric sensor (4) measures a chemical concentration in a sample (21) based on the measured fluorescence of the sample. The sensor includes a controller (18) at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.
Abstract:
An ultraviolet (UV) fluorometric sensor measures a chemical concentration in a sample based on the measured fluorescence of the sample. The sensor includes a controller, at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.
Abstract:
During the rinse cycle of a re-circulating dishwashing machine (132), water is simultaneously diverted into a dispenser (100) as water is delivered to the rinse arms (133) of the dishwashing machine (132). The cavity (118) of the dispenser (100) contains a solid detergent block (125) and is flooded with water during the rinse cycle. The water contacts the detergent (125) during the rinse cycle to create a use solution, and the use solution exits the dispenser (100) and flows into a wash water storage tank (135) of the dishwashing machine (132). During the wash cycle of the dishwashing machine (132), the wash water containing the use solution from the dispenser (100) is pumped into the wash arms (134). The wash water becomes diluted during the subsequent rinse cycle, however, the water diverted into the dispenser (100) during the rinse cycle replenishes the detergent (125) concentration in the wash water for use in the subsequent wash cycle.
Abstract:
A UV absorption spectrometer includes a housing, a controller, and a sensor unit including an. ultraviolet light source, an analytical area in an analytical cell or in running water or gaseous medium, and an UV wavelength separator including a UV detector. An ultraviolet light in a wavelength range of 200-320 nm emits from the light source through the analytical area to the wavelength separator, and the controller transforms output signals from the UV detector into absorbance values or optical densities for two or more wavelengths in the wavelength range, calculates differences of said absorbance values or optical densities, determines a concentration of a chemical in the solution with calibration constants found for a known concentration of the chemical and said differences of said absorbance values or optical densities.