東亜ディーケーケー List of Products and Services

The organic pollution monitor "OPM-161L" is a measuring instrument developed based on our over 30 years of experience and achievements, utilizing the ultraviolet absorbance method. This device measures the degree of organic pollution in wastewater discharged from factories and business establishments based on ultraviolet absorbance. The obtained values are correlated with CODMn and are used for calculating pollution load related to total water quality regulations. 【Features】 ■ Compact and lightweight - In addition to the immersion type, a new drop-in type detector installation has been adopted. - Improved maintainability. - Can also accommodate sampling methods. ■ Adoption of LED light source - Reduces environmental impact by not using mercury. - Achieves reduced running costs by employing long-life LED light sources. *For more details, please refer to the PDF materials or feel free to contact us.

The "OPM-1610 model" is a measuring instrument developed based on our over 30 years of experience and achievements, utilizing ultraviolet absorption photometry. It achieves stable measurements through feedback control of light intensity and significantly reduces power consumption by adopting energy-saving lamps. Additionally, it can also be used as a sampling type by employing a receiving tank. 【Features】 ■ Realized miniaturization ■ Stable measurements achieved through feedback control of light intensity ■ Significant reduction in power consumption due to the adoption of energy-saving lamps ■ Resistant to corrosion, capable of measuring in harsh environments *For more details, please refer to the PDF document or feel free to contact us.

The "OPM-1630 model" is an automatic water quality measurement device that directly illuminates sample water falling from a nozzle with a diameter of 10mm and measures the absorbance of ultraviolet and visible light using a two-wavelength absorbance measurement method for falling water. It employs a light quantity feedback system that maintains a constant light level, ensuring stable measurements. Automatic cleaning is performed by periodically moving a wiper located on the inner surface of the nozzle up and down. Additionally, a shutter has been installed to prevent splashes of water droplets generated during cleaning or when introducing sample water from adhering to the optical components. 【Features】 - Measures the concentration of organic pollutants in water based on the absorbance of ultraviolet light (254nm). - The falling water method eliminates the need for a cell window, removing concerns about contamination. - Stable measurements with a new optical system. - Function to prevent water droplets from adhering to the optical components. *For more details, please refer to the PDF document or feel free to contact us.

The "NPW-400 model" is an automatic measurement device that can automatically measure total nitrogen (TN), total phosphorus (TP), and COD concentrations in wastewater from factories and business establishments, in response to water quality total quantity regulations. It is based on the measurement methods for total nitrogen and total phosphorus outlined in the Ministry of the Environment's Notification No. 64 of 1974, which establishes wastewater standards based on the provisions of the wastewater standards set by the Minister of the Environment. Additionally, it adopts the "120°C potassium peroxydisulfate digestion method - ultraviolet spectrophotometry for total nitrogen measurement" and the "120°C potassium peroxydisulfate digestion method - molybdenum blue spectrophotometry for total phosphorus measurement." 【Features】 ■ Adopts the same 120°C heating digestion method for 30 minutes as the specified measurement method ■ Achieves good correlation with manual analysis values ■ Simultaneous measurement of TN, TP, and COD (UV) using a multi-wavelength detector ■ Compact design with a simple sample and reagent weighing unit ■ Realizes a simple configuration with integrated manifold piping *For more details, please refer to the PDF document or feel free to contact us.

The "CODR-400 model" is an automatic measuring device designed to measure COD in factory wastewater and lake water, in response to wastewater regulations such as total water quality regulations. It is designed based on JIS K 0806 "Chemical Oxygen Demand (COD) Automatic Measuring Instruments." By adopting dual platinum electrodes, maintenance of the internal liquid of the reference electrode is no longer necessary. 【Features】 ■ Easy operation through an interactive method using a color touch panel ■ Display of titration curves on the color touch panel is possible ■ Rich logging functions allow for recording and checking of past measurement values, titration data, calibration data, alarm data, and start/stop data ■ Standard equipped with a cleaning function using oxalic acid to clean the reaction tank and electrodes from manganese contamination *For more details, please refer to the PDF materials or feel free to contact us.

The "ODL-1600A model" is an oil film detector (non-explosion-proof type) that automatically detects oil films on the water surface using laser light, utilizing the difference in reflectivity between water and oil in visible light, allowing for early detection of oil spills. It is suitable for use not only on the water surface but also as a detector for water and oil leaks on the floor. Through the optimization of the optical system, it can detect distances from 0.3m to 4m, and up to 6.5m on a still water surface, making it capable of functioning even in areas with significant water surface fluctuations. 【Features】 ■ Non-contact measurement using laser light ■ Suitable for use as a detector for water and oil leaks on the floor ■ Capable of functioning in areas with significant water surface fluctuations ■ Allows for the connection of two detectors to one converter for operation *For more details, please refer to the PDF document or feel free to contact us.

The "ODL-1610A model" is a product that achieves oil film detection up to a water surface distance of 10 meters by adopting technologies such as laser light source scanning methods and high-speed pulse emission, as well as enlarging the condenser lens. It can also accommodate locations with significant water surface fluctuations or where it is not possible to approach the water surface due to installation conditions. The optional mounting brackets allow for easy installation and adjustment, ensuring reliable maintenance. It is possible to connect two detectors to one converter for operation. 【Features】 ■ Non-contact measurement using laser light ■ Suitable for use as a detector for leaks of water and oil on the floor ■ Detection range improved to 0.3m to 10m due to enhancements in the optical system ■ Capable of accommodating locations with significant water surface fluctuations or where it is not possible to approach the water surface due to installation conditions ■ Can operate with two detectors connected to one converter *For more details, please refer to the PDF document or feel free to contact us.

The "OF-1600 model" is an oil film detector that continuously monitors the presence or absence of oil film on the water surface, such as in drainage pits, and outputs an alarm signal when oil film is detected. By adopting the reflectance measurement method, it can detect most oils that form an oil film, including heavy oil, light oil, kerosene, gasoline, and solvents. With the peak hold circuit, it is unaffected by debris or foreign objects flowing on the monitored water surface, and it can record and retrieve the history of oil film detection and errors along with the date and time. 【Features】 - Compact and lightweight design with no consumables and minimal maintenance required. - The LED light source is pulse-modulated, allowing measurements even in direct sunlight. - Equipped with a self-diagnostic function that emits abnormal detection signals. - Rich self-diagnostic features enable instant judgment of equipment or measurement abnormalities. - Standard transmission output is also equipped, allowing for the recording of oil film spill history. *For more details, please refer to the PDF document or feel free to contact us.

Our "Oil Film Detector" detects oil films floating on the water surface by measuring the difference in light reflection rates between water and oil, allowing for continuous monitoring of the presence of oil films and rapid alarm activation. We offer a variety of models to accommodate different installation conditions, including the standard model "ODL-1600A," which boasts a strong track record, the long-distance model "ODL-1610A," capable of detecting up to 10 meters, the robust aluminum pressure-resistant explosion-proof model "SODL-1600," and the compact and lightweight LED-equipped model "OF-1600." Please select the model based on the conditions of the installation site. 【Product Lineup】 ■ODL-1600A ■ODL-1610A ■SODL-1600 ■OF-1600 *For more details, please refer to the PDF materials or feel free to contact us.

The NT3100sc model is a nitrate meter that measures nitrate and nitrite ions dissolved in water using ultraviolet absorbance spectrophotometry. Total nitrogen discharge is regulated under water quality total quantity regulations. The concentration of nitrate and nitrite ions is used as an indicator for managing the nitrification process in denitrification processes and advanced treatment reaction tanks to reduce total nitrogen discharge. The NT3100sc is suitable for managing nitrate ions in such denitrification processes and advanced treatments. Features: - Measurement using ultraviolet absorption method allows for reagent-free measurement. - 215 nm ultraviolet spectrophotometer for measuring nitrate and nitrite ions dissolved in water. - Equipped with an automatic wiper cleaning function that performs cleaning automatically at set intervals. - Flexible installation according to various environments; it can be used as a submerged type where the detector is directly placed in the sample water, or as a flow type using a bypass panel (optional) to supply sample water to the measurement section of the detector.