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

The "Organic Pollution Monitor UV Meter OPM-161L" is a measuring instrument that can continuously measure the degree of pollution caused by organic substances, such as factory wastewater. The measurement results using the ultraviolet absorption photometry method can be utilized for calculating COD. By adopting an LED light source, it is mercury-free and has a long lifespan, which helps reduce maintenance costs. The shape has been modified to achieve a compact and lightweight detector, increasing installation flexibility. 【Features】 ■ Supports a wide measurement range of absorbance from 0 to 2.5 Abs ■ Active in various fields including the food industry, water supply, and sewage ■ Utilizes a straight-shaped detector ■ Multiple installation methods available: Immersion type, drop-in type, hanging type, sampling type, and winding type (using existing equipment) *For more details, please refer to the materials available for download in PDF format. Feel free to contact us with any inquiries.

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 "LDO2" fluorescent dissolved oxygen meter is a dissolved oxygen meter that employs an optical sensor, achieving both stability and reliability through an innovative measurement principle that differs from traditional membrane types. By controlling the emission of blue and red LEDs inside the detector, it accurately detects fluorescent reactions corresponding to oxygen concentration. Optical zero adjustment is also performed automatically, ensuring stable measurements over long periods. 【Features】 ■ No membrane required: Structure without electrolyte or anodes/cathodes eliminates the need for part replacement. ■ Significantly reduces maintenance effort: Only requires sensor cap replacement every two years. ■ Long-term stability maintained through optical zero adjustment. ■ Minimal impact from interfering substances or flow rate changes, allowing stable operation in a wide range of water quality environments. ■ Simultaneous measurement with 2 channels: Two detectors can be connected to the SC4500 converter. *For more details, please refer to the PDF document or feel free to contact us.

The "OBM-162A type" is a robust aluminum die-cast, 4-wire (AC-free power supply) field-mounted dissolved oxygen meter converter. It is equipped with a transmission output of DC 4-20mA for two circuits (including water temperature) and two-point adjustable output. If normal calibration cannot be performed, it displays messages such as zero or slope abnormalities or response failures, and all operations can be performed using the ten waterproof sheet keys on the front without opening the door. 【Features】 ■ Compact aluminum die-cast case ■ Multifunctional field-mounted dissolved oxygen meter ■ Diaphragm rupture detection function (according to main unit specification code) ■ Two-point adjustable output, transmission output for two circuits including water temperature, RS-232C output (optional) ■ One-touch automatic calibration, diverse self-diagnosis functions *For more details, please refer to the PDF document or feel free to contact us.

The "HBM-160B/162B model" is a robust field-mounted pH/ORP converter made of aluminum die-cast with a 4-wire (AC-free power supply) design. It is equipped with a DC 4-20mA transmission output for pH/ORP values and water temperature, as well as a 2-point adjustment (upper and lower limit alarm contact) output. All operations, including calibration, can be performed using the 10 waterproof sheet keys on the front without opening the door. 【Features】 ■ Standard liquid calibration (check) with one-touch automatic stability determination ■ Stable calibration without individual differences ■ Automatic determination of electrode characteristics with message display ■ Alarm (adjustment) output with adjustable sensitivity settings for upper and lower limit ON-OFF operation ■ Display unit with backlight *For more details, please refer to the PDF document or feel free to contact us.

The "HC-7□ Series" is an industrial immersion-type pH/ORP meter detector used for pH/ORP measurement in open channels and tanks. It incorporates electrodes into the electrode holder, allowing for the storage of a large amount of KCl internal solution within the holder. To accommodate a wide range of applications, from wastewater treatment facilities to processes with harsh measurement conditions, we offer various types of contact materials and combination electrodes. 【Features】 ■ Maintains comparative potential stably over a long period ■ Standardized various pressurized detectors for more reliable measurements ■ Capable of storing a large amount of KCl internal solution within the electrode holder *For more details, please refer to the PDF document or feel free to contact us.

Introducing the immersion-type pH/ORP detector with cleaning function, the "□HC-7 Series." The pH and ORP electrodes are equipped with glass sensors or platinum sensors, with the sensing components such as the liquid junction and temperature compensation sensor positioned downward. It allows for the selection of a more effective cleaning method suitable for the installation site. Additionally, we offer the immersion-type pH/ORP electrode holder combined with an ultrasonic cleaner, the "UHC-7D type" ultrasonic cleaning immersion detector. 【□HC-7 Series Various Cleaning Methods】 ■ Ultrasonic cleaning method ■ Brush cleaning method ■ Water jet cleaning method ■ Pulse air jet cleaning method ■ Chemical cleaning method ■ Lift-up jet cleaning method *For more details, please refer to the PDF document or feel free to contact us.

The "SSF-1600 model" is an instrument that continuously measures the concentration of suspended solids (SS) in wastewater, sewage, and industrial effluents, as well as the concentration of activated sludge (MLSS) in aeration tanks, using an optical system. It consists of a small, lightweight infrared detector that is immersed in the sample water and a converter that outputs the SS concentration as DC 4-20mA and RS-485. Additionally, the small, lightweight stainless steel detector is designed to minimize the adhesion of dirt to the detection surface due to the cleaning effect of the sample water flow rate. 【Features】 ■ Continuous measurement of SS and MLSS concentrations in sample water using infrared scattering light measurement method ■ The detector is small, lightweight, and made of stainless steel, making maintenance operations safe and easy ■ Wide measurement range (0-30000 mg/L) *For more details, please refer to the PDF document or feel free to contact us.

"SOLITAX" is a turbidity and SS meter available in two types: immersion type and pipe insertion type, which does not require sampling. The immersion type detector can be selected from two materials: resin (PVC) and metal (SUS). The pipe insertion type detector is available only in metal (SUS). It comes standard with a wiper cleaning function, allowing for stable measurements over long periods. 【Features】 ■ Choose between immersion type or pipe insertion type ■ Turbidity is measured using 90-degree scattered light ■ SS is measured using two-direction detection with 90-degree and 140-degree scattered light ■ Can measure even black samples ■ Equipped with an automatic wiper cleaning function ■ Automatically performs cleaning at set intervals ■ The SC4500 converter can connect two detectors, enabling simultaneous 2-channel measurement *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 "DR3900" is a spectrophotometer equipped with a variety of functions in a compact device. The main unit has programmed analysis methods for heavy metals, inorganic ions, and organic substances, allowing for measurements when combined with reagents provided by HACH. Additionally, users can input their own calibration curves beyond the built-in programs. Analysis methods can be set according to the samples. 【Features】 ■ Pre-installed analysis programs (many dedicated reagents available) ■ Capable of accommodating user-specific analyses ■ Wavelength scanning function included ■ Equipped with a color touch panel (7-inch TFT LCD screen) ■ Compatible with a variety of measurement cells *For more details, please refer to the PDF document or feel free to contact us. 【Measurement Items】 Total nitrogen / Total phosphorus / Nitrate / Ammonia / COD (Permanganate method) / Silica / Cadmium / Residual chlorine / Iron / Copper / Volatile acids / Hardness / Phosphate, and approximately 70 other items.