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

This is a multi-type portable water quality meter that allows for the measurement of "pH," "ORP," "electrical conductivity," and "dissolved oxygen" through probe replacement. Available in a 2-channel type MM-42DP and a 1-channel type MM-41DP! The measurement of dissolved oxygen adopts an "optical method"! With a waterproof structure and backlight, it can be safely used in the field. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look. Additionally, you can download materials that clearly explain the measurement methods for pH, electrical conductivity, and dissolved oxygen.

The "WQC-40" is a portable water quality meter that supports various measurements including pH, electrical conductivity, salinity, TDS (total dissolved solids), seawater specific gravity, turbidity, temperature, dissolved oxygen, ORP (oxidation-reduction potential), ions, and water depth. The sensor module in the measurement section can simultaneously measure up to 9 items with a single unit and is capable of measuring water depths up to 100 meters, making it useful for environmental monitoring of rivers, lakes, and dams, as well as for water quality management in factories and aquaculture sites. It has a diameter of 45mm, allowing for easy insertion into drilling investigation pipes and other equipment. By connecting the optional Modbus power box to a general-purpose gateway, a water quality monitoring system can also be established. 【Measurement Items】 Standard: pH, electrical conductivity, salinity, TDS (total dissolved solids), seawater specific gravity, turbidity, temperature Optional: dissolved oxygen, ORP (oxidation-reduction potential), water depth, ions *Ion electrodes can be selected from 6 types (fluoride, chloride, nitrate, calcium, potassium, ammonium ions) *For detailed information such as measurement ranges, please refer to the documentation. Feel free to contact us with any inquiries.

The "WQC-30" is a high-performance integrated sensor that can simultaneously measure up to 6 parameters, making it a simple portable multiparameter water quality meter. It features a memory function for 200 data points. Automatic memory at regular intervals is also possible, making it effective for simple monitoring. Additionally, with its energy-saving design, it can measure continuously for approximately 70 hours using two AA alkaline batteries. This achieves about a 90% reduction in power consumption compared to our conventional products. 【Features】 ■ High-performance integrated sensor for simultaneous measurement of up to 6 parameters ■ Improved reliability in low-concentration turbidity range ■ Memory function for 200 data points ■ Energy-saving design ■ Continuous measurement for approximately 70 hours using two AA alkaline batteries *For more details, please refer to the PDF document or feel free to contact us.

The "CM-42X" electrical conductivity meter is a tabletop water quality meter that can measure electrical conductivity, electrical resistivity, salinity, concentration, TDS, and more. It features a large touch panel and has excellent operability with a clear screen display. Additionally, the display content is comprehensive, allowing for both vertical and horizontal display switching, as well as the ability to show graphs that clearly indicate the stability of measurement values. Maintenance information is also well-documented. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

The "CM-41X" electrical conductivity meter is a tabletop water quality meter that can measure electrical conductivity, electrical resistivity, salinity, TDS, and more. It is a basic type that can operate on four AA alkaline batteries, with a long battery life of up to approximately 1000 hours. Additionally, it can also be powered via a USB cable. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

The tabletop multi-parameter water quality meter "MM-43X" is a desktop water quality meter capable of measuring pH, ORP, electrical conductivity, resistivity, dissolved oxygen, ions, and more. It can connect two sensors and display two parameters simultaneously. Additionally, it features a large touch panel with an easy-to-read screen display, enhancing usability. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog for more information.

The TTT-710 is a turntable capable of automatic measurement of up to 100 samples. The electrode cleaning tank and electrode storage tank are located at the front of the device, making maintenance of piping and electrodes easier. It can perform multi-sample measurements at a constant temperature, such as measuring the electrical conductivity of pharmaceutical water in accordance with JP18 revisions, and by pre-stirring the next measurement sample, it is possible to mix the measurement solution in advance. 【Features】 ■ Automatic measurement of up to 100 samples (100 samples is a manufacturer option) ■ Excellent maintainability ■ A variety of electrode cleaning modes available ■ Turntable with a constant temperature water bath available (manufacturer option) ■ Next sample stirring function included (manufacturer option) ■ Analysis equipment installation stand designed for space-saving (optional) *For more details, please refer to the PDF document or feel free to contact us.

Electrical conductivity is defined as "the reciprocal of the electrical resistance measured in a container filled with an electrolyte solution, where two flat electrodes with an area of 1 m² are facing each other at a distance of 1 m." In other words, it indicates how easily electricity can flow, which can also be described as the sum of the ions contained in the solution. This document provides detailed information on electrical conductivity, including its units, temperature characteristics of solutions, and measurement methods. We invite you to read it. 【Contents (excerpt)】 ■ Measurement of electrical conductivity ■ Electrical conductivity cell ■ Cell constant ■ Display of electrical conductivity at 25°C ■ Units of electrical conductivity *For more details, please refer to the PDF document or feel free to contact us.

<Currently featuring the following videos!> ● TOA DKK Company Introduction (Japanese version and English version) ● Portable Multi-Water Quality Meter Product Introduction ● Portable Tabletop Water Quality Meter Product Introduction ● HACH Spectrophotometer Product Introduction ● HACH Turbidimeter Product Introduction We also have various videos on measurement operations, calibration procedures, maintenance, and more for each product! We plan to add more diverse content in the future. Please take a look and consider subscribing to our channel!

The WDM-135A model (2-wire type) / WDM-136A model (4-wire type) is a compact and robust aluminum-cased, easy-to-operate 2-electrode field-installed conductivity (electrical conductivity) meter converter (transmitter). It supports a wide measurement range from ultra-pure water (0–0.2 μS/cm) to industrial wastewater (0–20 mS/cm) and a wide temperature compensation range from -5 to 120°C. There are 2-wire (DC 24V power supply) and 4-wire (AC-free power supply) options, with a transmission output of DC 4–20 mA. 【Features】 ■ Wide measurement range ■ Adjustable measurement range ■ Temperature measurement display ■ Self-diagnosis ■ Automatic return to measurement mode *For more details, please refer to the PDF document or feel free to contact us.

The "WBM-160 model" is a robust, aluminum die-cast, 4-wire field-mounted electrical conductivity meter (2-electrode type) converter. By selecting from four types of reference cell constants, it can accommodate a wide measurement range from ultra-pure water to factory wastewater. The measured values can be adjusted to match known electrical conductivity values, and operations such as setting changes can be performed using the waterproof sheet keys on the front without opening the door. 【Features】 ■ Compact aluminum die-cast case, field-mounted electrical conductivity meter ■ Wide measurement range from ultra-pure water to wastewater ■ Adjustable output, two circuits of transmission output including water temperature, RS-232C output (optional) *For more details, please refer to the PDF materials or feel free to contact us.

The "WBM-100 model" is a compact and lightweight panel-mounted conductivity meter converter. It can handle a wide measurement range from ultra-pure water to factory wastewater, and a wide temperature compensation range from -5 to 120°C. It features transmission output (DC 4-20mA) and adjustment (alarm) output (2 circuit C contacts), as well as functions such as sample water temperature display. 【Features】 ■ Compact DIN96 size ■ Temperature compensation via microcontroller calculation ■ Cell constant adjustment function ■ Water temperature display capability *For more details, please refer to the PDF document or feel free to contact us.

The "WBM-210A model" is a compact and lightweight panel-mounted 2-channel electrical conductivity meter. It can accommodate a wide measurement range from ultra-pure water in semiconductor plants (displaying four decimal places) to factory wastewater, as well as a wide temperature compensation range from -5 to 120°C. It features transmission output (DC 4-20mA, 2 circuits) and alarm output (2 circuits with c contacts), as well as RS-232C digital output. 【Features】 ■ Compact DIN96 size ■ Microcontroller-equipped electrical conductivity meter for various solutions ■ Insulated transmission output of 4-20mA, 2 circuits ■ Capable of connecting 2 detectors ■ Standard RS-232C equipped *For more details, please refer to the PDF document or feel free to contact us.

This product is a panel-type electric conductivity meter specifically developed for the food industry, designed to be installed in pipelines and tanks of food manufacturing processes for applications such as CIP (Clean-in-Place) management, defoamer control, and liquid level control. It uses a microcomputer for temperature compensation, allowing for accurate temperature compensation over a wide temperature range, and can be set to any desired temperature characteristics. The measurement range features a manual switchable two-range system, corresponding to the cell constant of the combination detector, with options of 0–300/3000 μS/cm (at 25°C) or 0–20/200 mS/cm (at 25°C). 【Features】 ■ Compact DIN96 size ■ Sanitary electric conductivity meter specifically for the food industry ■ Installed in pipelines and tanks of food manufacturing processes for use in CIP management, defoamer control, and liquid level control *For more details, please refer to the PDF document or feel free to contact us.

Introducing a two-electrode conductivity detector that can accommodate a wide measurement range from ultra-pure water used in semiconductors and power plants to river water and industrial wastewater. We offer various installation methods, including pipe insertion, immersion, and submersible types. There are four cell constants available: 0.01/cm, 0.1/cm, 1/cm, and 10/cm, allowing measurements from ultra-pure water below 0.2μS/cm to wastewater up to 10mS/cm (A5/A6 models). 【Features】 ■ The insulating seal materials for the inner and outer electrodes are made of glass hermetic and Teflon (PTFE), providing high heat and pressure resistance (A5/A6 models). ■ The connector box is integrated, making it easy to connect with the converter and detach the detector. ■ The compact and lightweight AR4/AR5 models for pure water have no restrictions on installation orientation. *For more details, please refer to the PDF materials or feel free to contact us.

Introducing a simple conductivity (electrical conductivity) meter that integrates a 2-electrode detector and amplifier (measurement circuit) in a single unit (non-indicative). It can be selected from four types of cell constants, allowing for a wide measurement range from ultra-pure water to river water and industrial wastewater. The insulating seal materials for the inner and outer electrodes use glass hermetic and fluororesin, providing high heat resistance and pressure resistance. 【Features】 ■ Outputs a DC 4–20mA signal for measurement value transmission ■ Many variations available, including screw-in and flange-connected insertion types, immersion types, and flow-through types ■ Supports a wide measurement range from ultra-pure water to river water and industrial wastewater *For more details, please refer to the PDF document or feel free to contact us.

The "MDM-135A/137A model" can accurately measure high electrical conductivity and the concentration of strongly corrosive solutions that cannot be measured with a two-electrode type. It also supports a wide measurement range from a minimum of 0 to 0.5 mS/cm and a maximum of 0 to 2000 mS/cm, as well as a wide temperature compensation range from -5 to 105°C. 【Features】 ■ Measurement of high electrical conductivity (MDM-135A) ■ Measurement of strongly corrosive solution concentration (MDM-137A) ■ Minimal influence from contaminants (dirt and bubbles) ■ Holds transmission output during maintenance ■ Automatically returns to measurement mode after 2 hours in maintenance mode *For more details, please refer to the PDF document or feel free to contact us.

The "MBM-160/162 model" can accurately measure high electrical conductivity and the concentration of strongly corrosive solutions that cannot be measured with a two-electrode type. It is equipped with a transmission output of DC 4-20mA for two circuits (including water temperature) and a two-point adjustment (upper and lower limit alarm) output. The detector is made of heat-resistant PVC (C-PVC) or fluororesin (PFA), providing excellent corrosion resistance and heat resistance against most chemical solutions. 【Features】 ■ Measurement of high electrical conductivity (MBM-160 model) ■ Change of transmission output range (MBM-160 model) ■ Measurement of strongly corrosive solution concentration (MBM-162 model) ■ Outputs DC 4-20mA for any range ■ Ability to correct measurement values *For more details, please refer to the PDF document or feel free to contact us.

The "MBM-100A model" is a compact and lightweight panel-mounted electrical conductivity regulator that uses electromagnetic induction measurement methods. It is equipped with a transmission output of DC 4-20mA and two-point adjustment (upper and lower limit alarms), and the power supply is AC-free. The detector is made of heat-resistant PVC (C-PVC) or PFA, providing excellent corrosion resistance and heat resistance against most chemical solutions. 【Features】 ■ Compact DIN96 size ■ Measurement of high electrical conductivity ■ Measurement and display of sample water temperature ■ Ability to correct measurement values to operational management electrical conductivity values ■ Automatically returns to measurement mode after 2 hours in maintenance mode *For more details, please refer to the PDF document or feel free to contact us.

The "ME-100 series" is an electrical conductivity detector that operates based on electromagnetic induction. When combined with a dedicated converter, it accurately measures the electrical conductivity of various solutions. It is capable of measuring highly corrosive acids or alkaline solutions with high electrical conductivity, as well as seawater, which cannot be measured using electrode methods. There are many variations available for installation methods, including pipe insertion, immersion, and submersion types. 【Features】 ■ Wetted materials: C-PVC, PVDF, or PFA ■ Minimum measurement range: 0 to 0.5 mS/cm (0.05 S/m) ■ Maximum measurement range: 0 to 2000 mS/cm (200 S/m) ■ Concentrations of hydrochloric acid, sulfuric acid, caustic soda, etc., can be converted and manufactured as concentration meters ■ Drip-proof structure allows for outdoor installation *For more details, please refer to the PDF document or feel free to contact us.

This is a portable meter compatible with field measurements that can measure "dissolved oxygen," "pH," "ORP," "electrical conductivity," and "ions" through probe replacement. It features intuitive operation with an illustrated step-by-step guide and supports Japanese display. Additionally, it has smooth and convenient data management and output functions, allowing all data logs to be output to a PC or USB memory via USB connection. The dissolved oxygen measurement adopts a fluorescent method (LDO), making maintenance easy. 【Features】 ■ Supports water quality measurement in combination with digital sensor IntelliCAL probes ■ The multi-meter "HQ4000" series is equipped with a color display ■ Powered by a rechargeable lithium-ion battery, with charging possible via a dedicated AC adapter or USB connection ■ Equipped with data sorting and filtering functions *For more details, please refer to the PDF document or feel free to contact us.