Turbidity/Chlorine SMART Sensor Platform

Turbidity and chlorine measurements in Water Treatment Plants

since 1959 No.1 Process analyzer supplier to Japanese market*

"Our mission is supplying clean water for all people."

“Human health and safety water is our starting point.”

"Reduce maintenance time and costs are our largest concern.”

Many of our customers face these challenges - the SENCOM™ 4.0 Platform resolves them.

*Based on a Yokogawa survey in 2019

Sustainable Water Management with Turbidity & Chlorine

Reliable and smart water management system

Yokogawa supports the entire lifecycle of their products through reliable sensing technology and data utilization. We extended SENCOM 4.0 platform to Turbidity measurement and Chlorine measurement, and it will continue to provide unique value throughout the product's entire lifecycle.

Yokogawa's next-generation Turbidity and Chlorine analyzer for smart city

To facilitate optimal processes and improve personnel efficiency, Yokogawa has placed a strong focus on our Digital SMART Sensor SENCOM 4.0 Platform. This innovative analyzer platform provides full visualization and enhanced process uptime by optimizing maintenance, reducing configuration time, and simplifying in-field maintenance and calibration.

> What is SENCOM?


About OpreX

OpreX is the comprehensive brand for Yokogawa’s industrial automation (IA) and control business and stands for excellence in the related technology and solutions. It consists of categories and families under each category. This product belongs to the OpreX Analyzers family that is aligned under the OpreX Measurement category.


The SENCOM SMART Sensor System

4-wire SMART Sensor Platform for Turbidity/Chlorine FLXA402T

Changing technologies don't have to result in negative consequences putting throughput, quality, or compliance at risk. The advanced flexibility function features multi-input, allowing the connection of up to 2 sensors at one unit.

The FLXA402T can handle new SMART sensors (Turbidity detector/Chlorine detector) and conventional pH/Conductivity sensors. SENCOM4.0 Platform allowing an easy upgrade to digital SMART sensors in the future, giving you more flexibility and optimizing your OPEX.

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2 in 1 FLXA402T and TB820D, FC800D


 Possible sensor connection to Digital SMART SENCOM

FLXA402T and TB820D, FC800D

Turbidity Measurement

The biggest problem with the turbidity meter is the dirt on the sensor. Easy to clean cell structure, Automatic wash system, Long life time light source contribute to the reduction of maintenance costs.

Chlorine Measurement

Environmentally friendly with the right amount of chlorine injection, minimizes remote maintenance and reduce maintenance time.

pH and Conductivity Measurement

Yokogawa’s pH and Conductivity sensors are highly reliable and very unique. You can select the most valuable sensor.

pH and Conductivity sensors

Analyzer specialized for Tap water treatment process

Tap Water treatment process

Water Treatment Application

1. Sedimentation
Receiving well 
Raw water contains sand, pebbles and soil. They are removed by sedimentation in the middle of a gentle stream.
-Monitor Turbidity, pH and SC

2. Stabilization
Receiving well
The well adjust to keep the water level constant and pressure for the next process.
-Monitor Turbidity, pH and Chlorine

3. Flocculation
Flocculation basin

The raw water with the coagulant is slowly agitated ."Flock" is a group of fine sand and soil  and  gathered together by the action of a coagulant. By creating flocs, particles such as sand and soil become relatively large and easily sink.
-Monitor Turbidity and pH

Flocculation basin

4. Sedimentation
Sedimentation basin
Flocks are sunk in a quiet stream, removing sand and soil ( flocs) from the water
-Monitor Turbidity, pH

5. Sand filtration
Sand filtering
A layer of sand or gravel filters the water and removes fine particles
-Monitor Free chlorine, Turbidity

6. Chlorination
Mixing basin
Added chlorine for disinfection
-Monitor Free chlorine, Turbidity and pH

7. Clean water reservoir
Water reservoir

Store clean water in the distribution reservoir and adjust the water amount for distribution
-Monitor Turbidity , Free chlorine and pH

Water reservoir

8. Distribution pump
Send the water from the distribution reservoir to the water supply station. Water is sent to each distribution station / reservoir using water pipes and supplied to each household or facility.
-Monitor Turbidity, Free chlorine and pH

9. Distribution Tank and Piping
Distribution reservoir
Keep enough water for use
-Monitor Turbidity, Free chlorine and pH