YEX-ORP-206 Online ORP Sensor Product Overview

YEXsensor YEX-ORP-206 online ORP sensor (model: YEX-ORP-206) is an industrial-grade digital ORP sensor launched by Yexsensor, developed for applications requiring real-time monitoring of oxidation-reduction potential. The sensor adopts platinum electrode method measurement principle and has a built-in dual high-impedance differential amplifier, effectively improving anti-interference ability and response speed to ensure fast and stable measurement data.

The core highlight of the sensor lies in the patented ORP electrode design: the internal reference solution seeps out extremely slowly through the microporous salt bridge under a pressure of at least 100KPa (1Bar), and the forward seepage can last more than 20 months. This unique reference system greatly improves electrode stability, extending electrode life several times longer than ordinary industrial electrodes, significantly reducing replacement frequency and maintenance costs.

YEX-ORP-206 outputs standard RS-485 Modbus RTU protocol, which can be directly connected to PLC, DCS, industrial control computers, paperless recorders or touch screens and other third-party equipment without additional transmitters, simplifying system integration and reducing overall costs. The range covers -1500～+1500mV, with 1mV resolution, ±20mV accuracy, and T90 response time<30s, meeting the needs of most industrial online ORP monitoring.

The housing is made of high-strength ABS/PC alloy material, which is lightweight and corrosion-resistant. The standard 3/4NPT pipe thread supports submersible installation and is suitable for pipelines, tanks and open water bodies. The standard cable length is 5 meters (customizable), and the IP68 protection rating allows the sensor to be immersed in water for long-term use. The low power consumption design (0.2W@12V) combined with 12～24VDC wide voltage power supply is particularly suitable for on-site deployment and remote monitoring scenarios.

Yexsensor adheres to high-quality manufacturing standards. Every YEX-ORP-206 sensor undergoes 72-hour aging tests and strict stability verification to ensure zero defects upon delivery, providing professional and reliable solutions for users' oxidation-reduction potential monitoring.

YEX-ORP-206 Online ORP Sensor Core Technical Advantages

Patented Electrode Technology and Ultra-Long Life

YEX-ORP-206 adopts patented ORP electrode. The slow seepage design of reference solution enables the electrode to maintain extremely high stability in high-pressure environments, greatly extending life and reducing downtime and cost pressure caused by frequent replacement.

Strong Anti-Interference and Fast Response

Dual high-impedance differential amplifier technology effectively suppresses electromagnetic interference in industrial sites. The response time is as short as<30s, capable of timely capturing ORP changes during chemical reactions and providing real-time data support for process control.

Digital Integration and Ease of Use

RS-485 Modbus RTU protocol output supports long-distance transmission and multi-device networking. Users can read ORP values through standard commands. The one-point calibration method is simple to operate, greatly reducing on-site debugging difficulty.

Rugged and Durable Design

The IP68 protection rating combined with ABS/PC alloy housing enables the sensor to adapt to working conditions of 0～50℃ and ≤0.2MPa, and can operate reliably even in humid and corrosive environments. The 3/4NPT submersible installation method is flexible and convenient.

These advantages make the YEXsensor YEX-ORP-206 not only a high-performance sensor, but also a complete solution that helps users achieve chemical process optimization, sewage treatment compliance, and industrial production stability.

YEX-ORP-206 Online ORP Sensor Technical Specifications

YEX-ORP-206 Online ORP Sensor Wide Application Scenarios

The YEXsensor YEX-ORP-206 online ORP sensor is widely suitable for various industrial and environmental scenarios that require precise monitoring of oxidation-reduction potential. Its high stability and digital integration features can effectively solve pain points of traditional ORP electrodes such as short life, weak anti-interference, and frequent maintenance.

• Environmental Water Quality Monitoring
  In rivers, lakes, sewage treatment plant inlet and outlet and other scenarios, real-time monitoring of ORP values assesses the oxidation-reduction state of water bodies, assists in judging water pollution levels and treatment effects, and provides reliable data for environmental compliance.

• Chemical Reaction Process Control
  In reaction kettles or pipelines in pharmaceutical, chemical, dye and other industries, precise monitoring of ORP changes optimizes reaction conditions, improves product yield, and reduces side reactions.

• Acid-Base Salt Solution Monitoring
  In processes involving acid-base salt solutions such as electroplating, metallurgy, and battery production, the YEX-ORP-206 can stably measure the oxidation-reduction potential of solutions, ensuring stable process parameters and preventing equipment corrosion or product quality fluctuations.

• Industrial Production Process
  In wastewater treatment or production process monitoring in food, papermaking, textile, leather and other industries, ORP is used to control dosing volume, achieving precise oxidation-reduction treatment, improving sewage treatment efficiency and reducing operating costs.

• Other Professional Fields
  Including ozone disinfection system monitoring, bioreactor control, laboratory process verification, etc. Whether for continuous online monitoring or intermittent process control, it can provide stable and reliable ORP data.

Through these applications, Yexsensor helps users build intelligent oxidation-reduction monitoring systems, improving production efficiency and ensuring process safety and environmental compliance.

YEX-ORP-206 Online ORP Sensor Installation and Electrical Connection

Installation Requirements

YEX-ORP-206 adopts submersible installation design and can be directly screwed into pipelines, tanks or brackets using 3/4NPT pipe thread. Important notes: The sensor must not be installed upside down or horizontally during installation. It must be installed at an angle of at least 15 degrees or more to ensure normal seepage of reference solution and measurement accuracy. Vertical or near-vertical installation is recommended to avoid air bubble or dead zone interference.

Electrical Connection

The cable adopts 4-core twisted shielded wire, with the following wiring definitions:

• Red wire: Power positive pole (12～24V DC)

• Black wire: Ground (GND)

• Blue wire: 485A

• White wire: 485B

Before powering on, carefully check the wiring sequence to avoid reverse connection causing equipment damage. Considering that the sensor may be immersed in water (including seawater) for a long time or exposed to air, all wiring must be waterproof and anti-corrosion treated. The cable should have certain corrosion resistance. The sensor connector is M16-5 core waterproof male connector to ensure reliable connection.

After installation, it is recommended to power on and run in clean water for a period of time, confirm that the data is stable before calibration.

YEX-ORP-206 Online ORP Sensor Maintenance and Calibration Guide

Daily Use and Maintenance

Before use, clean the sensor in distilled water or deionized water and dry it with filter paper to prevent impurities from contaminating the measured solution. During measurement, 1/3 of the electrode should be immersed in the measured solution.

When the electrode is not in use, it should be cleaned and inserted into a protective sleeve containing 3mol/L potassium chloride solution, or stored in a container with 3mol/L KCl solution. Regularly check whether the wiring terminals are dry. If contaminated, wipe with absolute alcohol, blow dry and use.

Avoid long-term immersion of the electrode in distilled water or protein solutions, and prevent contact with organosilicon grease. For electrodes that have been used for a long time, they can be cleaned with dilute hydrochloric acid and then rinsed with water. If there is a large measurement error, calibration with the instrument is required. If it still cannot be calibrated normally after maintenance, it indicates that the electrode has failed and should be replaced in time.

ORP Standard Solution Preparation Method

• 256mV solution: Weigh 2.1g quinhydrone and add it to 200mL pH 4.00 standard buffer solution, mix well.

• 86mV solution: Weigh 2.1g quinhydrone and add it to 200mL pH 6.86 standard buffer solution, mix well.

• -40mV solution: Weigh 2.1g quinhydrone and add it to 200mL pH 9.18 standard buffer solution, mix well.

pH buffer solution preparation: Take 250mL distilled water, add one pack of corresponding pH calibration powder, stir until completely dissolved, then measure 200mL for use.

Calibration Operation (One-point Calibration)

Place the sensor in the prepared standard solution (recommended 86mV, 256mV or -40mV), let it stand for 3～5 minutes. After the value stabilizes, if the displayed value does not match the standard value, execute one-point calibration through Modbus command. For detailed calibration instructions, please refer to the product appendix or contact Yexsensor technical support.

Regular calibration can effectively maintain measurement accuracy. It is recommended to perform it every 1-3 months according to actual working conditions.

Quality Assurance and Service Support

Yexsensor quality inspection department is equipped with advanced testing equipment and strictly follows specifications to conduct 72-hour aging tests and stability tests on each YEX-ORP-206 to ensure high-quality delivery. We provide one-year after-sales service from the date of sale (excluding damage caused by improper use). For repairs, please send it back to the company with good packaging, and we will repair the relevant damaged parts free of charge.

Standard accessories include:

• 1 × YEX-ORP-206 sensor

• 1 × User manual

• 1 × Certificate of conformity

• 1 × 5-meter cable

Optional accessories include extension cables, mounting brackets, ORP standard solutions, etc. Cable length customization and other personalized needs are supported.

Yexsensor professional technical team can provide full support for model selection guidance, installation and commissioning, and system integration to help users quickly implement ORP monitoring projects.

Common Questions and Answers (FAQ)

Q1: What range does the YEX-ORP-206 support? What is the accuracy?

A1: The range is -1500～+1500mV, resolution 1mV, accuracy ±20mV, which can meet the needs of most industrial ORP monitoring.

Q2: How does the sensor integrate with PLC or DCS systems?

A2: It adopts standard RS-485 Modbus RTU protocol. Data can be read by direct wiring. Yexsensor provides protocol documents and sample codes to support mainstream industrial controllers.

Q3: How long is the service life of the ORP electrode?

A3: The patented slow seepage design of reference solution allows forward seepage of the electrode to last more than 20 months. The life is significantly longer than ordinary industrial electrodes, depending on actual working conditions.

Q4: What are the strict requirements during installation?

A4: The sensor must not be installed upside down or horizontally. It must be installed at an angle of at least 15 degrees or more to ensure normal operation of the reference solution and measurement accuracy.

Q5: How to perform calibration? What standard solutions are needed?

A5: One-point calibration method is adopted, using 86mV, 256mV or -40mV standard solutions (prepared with quinhydrone). Immerse the sensor in the solution for 3-5 minutes and then execute the calibration command.

Q6: What are the advantages compared with traditional analog ORP sensors?

A6: Digital RS-485 output has stronger anti-interference ability, longer transmission distance, no need for additional transmitters, longer patented electrode life, and lower maintenance costs.

Q7: What problems will improper electrode maintenance cause? How to store the electrode?

A7: Improper maintenance may cause electrode failure. When storing, insert into a 3mol/L KCl solution protective sleeve or container, and avoid long-term immersion in distilled water or protein solutions.

Q8: Does Yexsensor support batch customization services?

A8: Yes. We can customize cable length, special installation methods or integration solutions. Bulk users are welcome to contact us for exclusive quotes and technical support.

The YEXsensor YEX-ORP-206 online ORP sensor has become the ideal choice in the fields of environmental monitoring, chemical process control and industrial production with its patented electrode technology, strong anti-interference ability and digital integration advantages. Yexsensor is committed to providing you with professional and reliable oxidation-reduction potential monitoring solutions.

Welcome to contact Yexsensor for the latest quotation, technical information or on-site demonstration to jointly build an efficient and intelligent industrial process monitoring system.