Reliable Online Water Quality Sensors for Industrial Monitoring

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YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter from YexSensor supports stable hydrology monitoring with RS485 Mod···

YEX-HY-RWLS-01 Radar Water Level Sensor

YEX-HY-RWLS-01 Radar Water Level Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, relia···

RS485 Modbus Conductivity Sensor | YEX-S1-EC

YEX-S1-EC industrial conductivity sensor with RS485 Modbus for PLC and SCADA monitoring. Review range options, installat···

YEX-S1-COD Online COD Sensor UV254 RS485 Modbus

Reagent-free online COD sensor using UV254 absorption with RS485 Modbus for wastewater, industrial effluent, surface wat···

YEX-S2-NHN-A Ammonium Nitrogen Sensor | RS485 & 4-20mA

Online ammonium nitrogen sensor with ISE measurement, temperature compensation, RS485 Modbus and 4-20mA for wastewater, ···

YEX-S1-TS Online Turbidity Sensor RS485 Modbus for Water

Industrial online turbidity and temperature sensor with RS485 Modbus for wastewater, drinking water, surface water, filt···

Optical Dissolved Oxygen Sensor RS485 | YEX-S1-RDO

IP68 fluorescence dissolved oxygen sensor, 0–20 mg/L, RS485 Modbus, for aquaculture, aeration and water monitoring. Req···

Industrial Online pH Sensor RS485 Modbus | YEX-S1-PH

YEX-S1-PH industrial online pH and temperature sensor with RS485 Modbus for wastewater, process water, PLC and SCADA int···

YEX-S1-ORP Online ORP Sensor RS485 Modbus for Water Treatment

Industrial online ORP and temperature sensor with RS485 Modbus for wastewater treatment, denitrification, disinfection, ···

YEX-S1-NHN Online Ammonium Nitrogen Sensor | RS485

Monitor ammonium nitrogen online with the YEX-S1-NHN ion-selective sensor, RS485 Modbus and temperature compensation for···

Online EC & TDS Sensor for Water | YEX-S1-EC

Measure conductivity, TDS and temperature online with RS485 Modbus. IP68 YEX-S1-EC sensor for drinking water, surface wa···

YEX-S1-CL Online Residual Chlorine Sensor RS485 Modbus

Online residual chlorine sensor with RS485 Modbus for drinking water, disinfection, swimming pools, cooling water and co···

Water Quality Sensor

RS485 Modbus Conductivity Sensor | YEX-S1-EC

YEX-S1-EC industrial conductivity sensor with RS485 Modbus for PLC and SCADA monitoring. Review range options, installat···

YEX-S1-COD Online COD Sensor UV254 RS485 Modbus

Reagent-free online COD sensor using UV254 absorption with RS485 Modbus for wastewater, industrial effluent, surface wat···

YEX-S2-NHN-A Ammonium Nitrogen Sensor | RS485 & 4-20mA

Online ammonium nitrogen sensor with ISE measurement, temperature compensation, RS485 Modbus and 4-20mA for wastewater, ···

YEX-S1-TS Online Turbidity Sensor RS485 Modbus for Water

Industrial online turbidity and temperature sensor with RS485 Modbus for wastewater, drinking water, surface water, filt···

Optical Dissolved Oxygen Sensor RS485 | YEX-S1-RDO

IP68 fluorescence dissolved oxygen sensor, 0–20 mg/L, RS485 Modbus, for aquaculture, aeration and water monitoring. Req···

Industrial Online pH Sensor RS485 Modbus | YEX-S1-PH

YEX-S1-PH industrial online pH and temperature sensor with RS485 Modbus for wastewater, process water, PLC and SCADA int···

YEX-S1-ORP Online ORP Sensor RS485 Modbus for Water Treatment

Industrial online ORP and temperature sensor with RS485 Modbus for wastewater treatment, denitrification, disinfection, ···

YEX-S1-NHN Online Ammonium Nitrogen Sensor | RS485

Monitor ammonium nitrogen online with the YEX-S1-NHN ion-selective sensor, RS485 Modbus and temperature compensation for···

Online EC & TDS Sensor for Water | YEX-S1-EC

Measure conductivity, TDS and temperature online with RS485 Modbus. IP68 YEX-S1-EC sensor for drinking water, surface wa···

YEX-S1-CL Online Residual Chlorine Sensor RS485 Modbus

Online residual chlorine sensor with RS485 Modbus for drinking water, disinfection, swimming pools, cooling water and co···

Online Oil-in-Water Sensor for Leak Detection | YEX-S1PRO-OIL

Fluorescence oil-in-water sensor with RS485 Modbus and 316L IP68 housing for produced water, industrial effluent and coo···

Online Residual Chlorine Sensor for Disinfection Control | YEX-S1PRO-CL

Online residual chlorine sensor with pH and temperature compensation plus RS485 Modbus for drinking water, pools and dis···

Laboratory Instruments

YEX-L1-EC2 Benchtop Conductivity Analyzer | YexSensor

YexSensor YEX-L1-EC2 measures conductivity, TDS, resistivity, salinity and temperature with three measurement modes, USB···

YEX-L1-DO1 Benchtop Dissolved Oxygen Meter | YexSensor

YexSensor YEX-L1-DO1 measures dissolved oxygen in % saturation and mg/L with temperature compensation, pressure/salinity···

YEX-L1-EC1 Benchtop Conductivity, TDS & Salinity Meter | YexSensor

YexSensor YEX-L1-EC1 measures conductivity, TDS, salinity and temperature with four cell constants, automatic range swit···

YEX-L1-PH2 Benchtop pH Meter with Optional ORP | YexSensor

YexSensor YEX-L1-PH2 is a benchtop pH meter with −2.00 to 16.00 pH range, optional ORP, automatic or manual temperature···

YEX-L1-BOD Digital BOD Analyzer, 0–4000 mg/L, 6 Samples | YexSensor

YexSensor YEX-L1-BOD digital BOD analyzer measures 0–4000 mg/L with six sealed 580 mL bottles, selectable 1–30 day tes···

YEX-L1-TUR Benchtop Turbidity Analyzer, 0–4000 NTU | YexSensor

YexSensor YEX-L1-TUR benchtop turbidity analyzer measures 0–4000 NTU using multi-angle tungsten-light optics, single/co···

YEX-L1-MP1 Benchtop Multi-parameter Water Quality Analyzer | YexSensor

YexSensor YEX-L1-MP1 combines configured photometric water tests, pH, temperature, suspended solids, custom calibration ···

YEX-L1-WS Mobile Water Quality Workstation for Field Testing | YexSensor

YexSensor YEX-L1-WS integrates dual-zone digestion, rapid cooling, photometric measurement, real-time result printing, a···

YEX-L1-PH-ORP Benchtop pH/ORP Analyzer for Laboratory Water Testing | YexSensor

YexSensor YEX-L1-PH-ORP measures pH, ORP and temperature in the laboratory with 1–5 point pH calibration, ATC/MTC, cont···

Level Sensors & Meters

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter from YexSensor supports stable hydrology monitoring with RS485 Mod···

YEX-HY-RWLS-01 Radar Water Level Sensor

YEX-HY-RWLS-01 Radar Water Level Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, relia···

YEX-HY-DFM-01 Doppler Flow Meter

YEX-HY-DFM-01 Doppler Flow Meter from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliable fie···

YEX-HY-DFM-02 Doppler Flow Meter

YEX-HY-DFM-02 Doppler Flow Meter from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliable fie···

YEX-HY-RFMS-01 Radar Flow Meter Sensor

YEX-HY-RFMS-01 Radar Flow Meter Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliab···

Data Collection & Control

YEX-DCC-02S Multi-Function Terminal for Integrated Water Quality Monitoring Systems

YexSensor YEX-DCC-02S is a multi-function terminal for water quality monitoring systems, supporting multi-parameter data···

YEX-DCC-02 Online Controller for Stable Water Quality Data Collection and Control

YexSensor YEX-DCC-02 is an online controller for water quality sensors, supporting display, calibration, RS485/Modbus co···

YEX-DCC-01D Portable Data Collection Device with OLED Display for Water Quality Sensors

YexSensor YEX-DCC-01D is a portable data collection device with OLED display, RS485 communication and 4-20mA output for ···

YEX-DCC-01 Bluetooth Wireless Transmission Module for Water Quality Sensor Field Data Collection

YexSensor YEX-DCC-01 is a Bluetooth wireless transmission module for field commissioning, mobile inspection and short-di···

Accessories/Components

YEX-Flow-Pool Flow Cell for Water Quality Sensor Installation

YexSensor YEX-Flow-Pool is a transparent flow cell component for water quality sensor installation, designed for stable ···

YEX-ACC-Clean-2 Online Self-Cleaning Bracket for Multi-Parameter Water Quality Sensors

YexSensor YEX-ACC-Clean-2 is an online self-cleaning bracket for multi-parameter water quality sensors, supporting autom···

YEX-ACC-Clean-1 Online Self-Cleaning Holder for Water Quality Sensors

YexSensor YEX-ACC-Clean-1 is an online self-cleaning holder for water quality sensors, designed to reduce fouling, suppo···

Portable Water Quality Instruments

YEX-PH-P100 Pen Type Acidity Tester

YexSensor YEX-PH-P100 Pen Type Acidity Tester is a portable pH and temperature meter for field water quality testing, aq···

YEX-TDS-100 Pen TDS Meter

YexSensor YEX-TDS-100 Pen TDS Meter is a portable tester for total dissolved solids and temperature measurement in field···

YEX-YD-100 Pocket Salinity Meter

YexSensor YEX-YD-100 Pocket Salinity Meter is a portable salinity and temperature tester for field water quality inspect···

YEX-P1-DO2 Portable Membrane Dissolved Oxygen Meter | YexSensor

YexSensor YEX-P1-DO2 portable membrane dissolved oxygen meter measures 0.00-20.00 mg/L and oxygen saturation with an SD0···

YEX-P1-AO1 Portable Active Oxygen Analyzer | YexSensor

YexSensor YEX-P1-AO1 portable active oxygen analyzer measures 0-1 mg/L by the DPD photometric method with a 520 nm LED, ···

YEX-P1-PH-ORP Portable pH ORP Meter | YexSensor

YexSensor YEX-P1-PH-ORP portable pH ORP meter measures 0.00-14.00 pH, -1999 to 1999 mV and temperature with automatic pH···

YEX-P1-MP2 Portable Multiparameter Water Quality Meter | YexSensor

YexSensor YEX-P1-MP2 is a configurable portable multiparameter water quality meter for pH, ORP, conductivity, TDS, salin···

YEX-P1-TUR Portable Turbidity Meter | YexSensor

YexSensor YEX-P1-TUR portable turbidity meter measures 0-1000 NTU with selectable ranges, NTU/FNU/EBC units, multi-point···

YEX-P1-DO Portable Fluorescence Dissolved Oxygen Meter | YexSensor

YexSensor YEX-P1-DO portable fluorescence dissolved oxygen meter measures 0.00-20.00 mg/L with a 316L IP68 probe, GPS, d···

YEX-P1-WQ-KIT Portable Multiparameter Water Quality Testing Kit for COD, Ammonia, TP, TN and CODMn | YexSensor

YexSensor YEX-P1-WQ-KIT combines a portable colorimeter and four-position digester for COD, ammonia nitrogen, total phos···

ABOUT US

Leading industrial solutionprovider since 2020
Yexsensor Company ProfileYexsensor is a leading high-tech enterprise specializing in the design, manufacturing, and export of industrial and environmental sensors. With a robust research and development (R&D) team, years of experience in global trade, and a focus on delivering precise and reliable sensing solutions, Yexsensor has established itself as a key player in the sensor technology industry. The company is committed to providing high-quality, cost-effective solutions tailored to a wid...
Changsha Yex Technology factory gate

Global Market Reach

To date, YexSensor products have been exported to 29+ countries and regional markets, covering Asia, Europe, North America, South America, Africa and Oceania.

North America Latin America Europe Middle East Africa Asia Oceania
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    Factory land occupation

    Factory land occupation
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    Senior technical engineer

    Senior technical engineer
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    Utility model patent

    Utility model patent
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    Global customers

    Global customers

CASE

Official certification, professional after sales service.
Malaysia Open-Channel Five-Parameter Water Quality Monitoring Case Study
Urban River Surface Water Online Monitoring Case: Solar Water Quality Station for Daily River Supervision
Singapore Tuas Port Nearshore Seawater Monitoring Case: A Water Quality Sensor on a Survey Boat
Secondary Water Supply Online Water Quality Monitoring Case: Real-Time Pump Room Outlet Supervision
Multi-Parameter Water Quality Sensor Probe Package Prepared for OEM Project Delivery
Case Study: Water Quality Sensor Procurement Handover for OEM Project Delivery
Yellow River High-Turbidity Water Monitoring Case: Sensor Configuration for Sediment-Rich Surface Water
Vietnam Mekong Delta River Water Quality Monitoring Reference Case: Online Sensors for Turbidity, COD and Conductivity
Wuhan Yangsigang Yangtze River Bridge Water Quality Monitoring Case: Online Monitoring for a Bridge Area
Submersible Level Transmitters Shipped to Spain for Multi-Point Water Level Monitoring
Shanghai Dazhi River Water Quality Monitoring Case: COD and Ammonium Nitrogen Monitoring for a Wide Artificial River
Philippines Laguna de Bay Algae Monitoring Reference Case: Chlorophyll and Blue-Green Algae Sensors for Lake Water Quality

Blog

Access to global foreword information
How to Test Water Quality for Industrial Monitoring Projects
2026-10-06
Learn how to test water quality in industrial monitoring projects. Compare onlin···—
pH Meter Calibration for Industrial Water Laboratories
2026-10-06
Build a defensible pH meter calibration procedure for industrial water laborator···—
Dissolved Oxygen Meter Selection for Field Projects
2026-10-06
Select a dissolved oxygen meter for aquaculture, wastewater and field surveys. C···—
Water Quality Monitoring System: IoT and SCADA Guide
2026-10-06
Plan a water quality monitoring system for IoT and SCADA projects. Compare senso···—