YEX-ORP-206A Industrial Online ORP Sensor: Stable, Precise, and Built for Longevity

In complex chemical reactions and water treatment processes, the Oxidation-Reduction Potential (ORP) is a critical indicator of water sanitization levels and chemical reactivity. The YEX-ORP-206A Online ORP Sensor by Yexsensor is a professional-grade solution engineered to overcome the common challenges of electrode drift and short service life in industrial environments.

With its patented reference system and digital signal processing, the YEX-ORP-206A provides the reliability needed for 24/7 automated monitoring.

Patented Technology for Extended Electrode Life

The core of the YEX-ORP-206A is its innovative reference system. Unlike conventional electrodes where the internal solution depletes rapidly, our patented design ensures the internal reference solution oozes extremely slowly from a microporous salt bridge.

Key Technical Advantages:

• Constant Pressure System: Maintains at least 100KPa (1Bar) of internal pressure to ensure a steady forward bleed of the reference solution for over 20 months.

• Double High-Impedance Differential Amplifier: This integrated electronic design provides exceptionally strong anti-interference capabilities and a lightning-fast response time.

• Superior Stability: The reference system remains stable in varying solution concentrations, doubling the lifespan compared to standard industrial ORP electrodes.

YEX-ORP-206A High-Performance Online ORP Sensor Technical Performance & Specifications

The YEX-ORP-206A is designed to be a versatile workhorse for acidic, alkaline, and saline solutions.

Core Technical Parameters

YEX-ORP-206A High-Performance Online ORP Sensor Strategic Application Scenarios

The YEX-ORP-206A is optimized for a wide range of "mission-critical" water quality tasks:

• Environmental Water Monitoring: Continuous tracking of Redox potential in rivers, lakes, and reservoirs to assess biological activity and pollution levels.

• Chemical & Industrial Production: Ideal for monitoring chemical reaction processes, especially in electroplating, textile bleaching, and chemical synthesis where precise ORP control is mandatory for product quality.

• Wastewater Treatment & Disinfection: Used in the control of chlorine dosing, denitrification processes, and the treatment of industrial wastewater containing cyanide or chromate.

• Cooling Towers & Aquaculture: Ensures that oxidative biocides are maintained at effective levels to prevent algae growth and bacterial outbreaks without over-dosing chemicals.

Installation and Electrical Connection

Proper Mechanical Mounting

For the most accurate and stable readings, follow these installation guidelines:

• Mounting Angle: The sensor must not be installed horizontally or upside down. It should be tilted at an angle of at least 15 degrees or more to ensure proper contact of the internal electrolyte with the electrode bulb.

• Installation Method: Features a standard 3/4 NPT pipe thread, making it easy to install via immersion (submersible) or directly into pressurized pipe flows and tanks.

Electrical Wiring (RS-485 Modbus)

• Red: Power Supply (12~24V DC)

• Black: Ground (GND)

• Blue: RS-485 A

• White: RS-485 B

Pro Tip: Ensure all external wiring points are properly waterproofed, especially if the connection point is exposed to the elements or corrosive industrial vapors.

Maintenance and Calibration Guide

Electrode Care & Storage

• Cleaning: Before measurement, clean the electrode with distilled or deionized water and gently blot dry with filter paper.

• Storage: When not in use, the electrode should be stored in a protective cover containing 3.5 mol/L Potassium Chloride (KCl) solution. Never store the electrode in distilled water or protein solutions for long periods.

• Restoration: If the glass film becomes translucent or develops deposits, wash briefly with dilute hydrochloric acid and rinse thoroughly with water.

Standard Solution Preparation

To ensure accuracy, the YEX-ORP-206A should be calibrated using standard solutions. A common method involves adding 2.1g of hydrazine to 200mL of specific pH buffer solutions:

• 256mV Standard: Mix with pH 4.00 buffer.

• 86mV Standard: Mix with pH 6.86 buffer.

• -40mV Standard: Mix with pH 9.18 buffer.

FAQ

Q1. How do I know when the ORP electrode has failed?

If the sensor fails to calibrate correctly or the response becomes extremely sluggish even after proper cleaning and soaking in KCl solution, the electrode has likely reached its end-of-life and needs replacement.

Q2. Is the YEX-ORP-206A compatible with my existing PLC?

Yes. The sensor uses the industry-standard Modbus/RTU protocol over RS-485, making it compatible with almost all modern PLCs, DCS, and industrial touch screens.

Q3. Why is the 15-degree installation angle necessary?

The angle ensures that the internal reference solution and electrolyte remain in constant contact with the electrode's sensing surface, preventing air bubbles from trapped inside the bulb which would cause erratic readings.

Q4. Can this sensor handle high-pressure pipes?

The YEX-ORP-206A is designed for working pressures of less than 0.2 MPa (2 Bar). If your application involves higher pressures, please consult our engineering team for specialized housing options.

Q5. How often should I calibrate the sensor?

For most industrial applications, a monthly calibration check is recommended. However, in clean water environments, the stable reference system of the YEX-ORP-206A may allow for longer intervals.

Q6. What is the wetted material, and is it chemical resistant?

The wetted material is POM (Polyoxymethylene), which offers excellent chemical resistance to many acids, bases, and salts. It is a durable engineering plastic suitable for most industrial production processes.

Q7. Does the sensor measure temperature?

Yes, the sensor includes an internal temperature sensor with an accuracy of ±0.5℃, allowing for simultaneous monitoring of water temperature alongside ORP.

Q8. Can I use this for swimming pool or spa monitoring?

Absolutely. It is an excellent choice for automated chlorine or ozone dosing systems in commercial pools and aquatic centers due to its long-term stability.

Quality Assurance & Service

Yexsensor is committed to delivering excellence. Every YEX-ORP-206A undergoes a 72-hour aging and stability experiment before shipment.

Quality Guarantee: We operate under standardized inspection procedures using advanced testing equipment.

Warranty: 12-month after-sales service from the date of purchase.

Package Includes: ORP Sensor *1, User Manual *1, Certificate of Quality *1.