DO6800 Dissolved Oxygen and Temperature Controller China Factory Suppliers

The DO-6800 online Dissolved Oxygen and Temperature Transmitting Controller from our China factory offers high-precision monitoring with automatic temperature compensation and Modbus RS485. As leading suppliers, we provide this micro computerized instrument featuring a large LCD and IP57 protection for industrial water treatment.

Product Details

Product Details

Contact Now

Contact Now

Product Details

The DO-6800 is a high-precision online Dissolved Oxygen and Temperature Transmitting Controller designed for rigorous industrial and environmental monitoring. Engineered for versatility, it supports both Polarographic and Galvanic DO sensors, ensuring seamless integration into diverse water treatment workflows, boiler deoxygenation processes, and aquaculture systems where precise oxygen regulation is critical for operational success.

Combining a large-screen multi-parameter LCD with advanced automatic temperature compensation (NTC 10K), the DO-6800 delivers real-time, accurate data tracking. With its robust IP57 protection grade and isolated 4-20mA signal output, this controller ensures maximum stability and reliability in challenging environments, making it an essential tool for water quality pollution prevention and environmental safety.

Detailed Parameters

Measuring Range0.0 - 20.00 mg/L (ppm) / 0 - 200.0 ug/L (ppd) Temperature Range0-60℃ / 0-100℃ (Optional)
Resolution0.1 ug/L, 0.01 mg/L, 0.1℃ Accuracy (mg/L)±2% FS / ±0.3℃
Display TypeLarge Screen Multi-parameters LCD Temp. CompensationNTC 10K Automatic Compensation
Signal OutputIsolated 4 ~ 20mA Current Output Control OutputTwo sets of ON/OFF relay contacts
CommunicationStandard Modbus RS485 (Optional to PC) Power SupplyAC 220V±10%, 50/60Hz

Key Advantages

Industrial Protection

Boasts an IP57 protection rating, ensuring the device remains operational and safe against dust and water immersion in harsh industrial settings.

Real-time Monitoring

Provides continuous, high-resolution dissolved oxygen tracking with a large LCD for instant on-site data verification.

Dual Sensor Support

Compatible with both Polarographic and Galvanic sensors, allowing users to choose the best sensing technology for their specific application.

Smart Compensation

Integrated NTC 10K automatic temperature compensation eliminates errors caused by temperature fluctuations in water.

Isolated Output

Features optically isolated relay outputs and isolated current signals to protect the system from electrical interference.

Digital Integration

Standard Modbus RS485 communication allows for seamless integration with PLC and PC-based management systems.

Product Gallery

Management Platforms

Boiler Deoxygenation

Precisely control dissolved oxygen levels to prevent corrosion in industrial boiler systems.

Wastewater Treatment

Optimize aeration processes in biological treatment plants to reduce energy costs.

Aquaculture Control

Maintain ideal oxygen levels for aquatic livestock to ensure growth and prevent mortality.

Env. Monitoring

Continuous monitoring of river and lake water quality for environmental compliance.

PLC Integration

Seamless connectivity via RS485 Modbus for centralized factory automation control.

Remote Alerting

Configure high/low alarm relay points for immediate notification of critical oxygen drops.

Investment Return Comparison

MetricLabor CostData AccuracyResponse TimeEnergy EfficiencyRisk Mitigation
Manual SamplingDO-6800 Online System
High (Daily Manual Testing)Minimal (Automated)
Variable (Human Error)High (Constant Precision)
Delayed (Batch Analysis)Instant (Real-time)
Low (Inefficient Aeration)High (Demand-based Control)
Reactive (Post-failure)Proactive (Alarm Alerts)

Frequently Asked Questions

Q: What is the difference between Polarographic and Galvanic sensors in DO-6800?

Polarographic sensors require a polarization period before measurement and typically have a longer lifespan, while Galvanic sensors are ready for immediate use but may have different maintenance intervals.

Q: How does the automatic temperature compensation work?

The DO-6800 uses an integrated NTC 10K thermistor to detect water temperature and automatically adjusts the oxygen reading based on the solubility of oxygen at that specific temperature.

Q: Can the DO-6800 be integrated into a SCADA system?

Yes, via the optional Modbus RS485 communication output, the controller can be linked to most industrial SCADA systems and PLCs for centralized data management.

Q: What is the meaning of the IP57 protection grade?

IP57 means the device is completely protected against dust and can withstand temporary immersion in water (up to 1 meter for 30 minutes), making it ideal for humid environments.

Q: How do the alarm relay outputs function?

The controller features two sets of ON/OFF relays that can be programmed to trigger when DO levels hit a specific high or low threshold, activating pumps or sirens.

Q: Is the 4-20mA output signal isolated?

Yes, the current output is isolated to prevent ground loops and protect the internal circuitry from external electrical surges, enhancing overall system stability.

Ready to Optimize Your Water Quality Monitoring?

Contact Us

Get in Touch

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.

* Name

* E-mail

Phone

*Message

FAQS

What's the MOQ?

Down Down

1set sample is available.

What's your price?

Down Down

We quoted based on your products’ code and qty. We can offer different discount depending on qty.

I am not sure of the required product type, how to get quotation?

Down Down

Please tell us the details of your project: Measuring range, temperature, pressure, If need relay control output, 4-20mA or Modbus RS485 output? We will choose suitable product type as per your project details and make quotation for you.

How long is your delivery time?

Down Down

Most of our products are in stock. Generally, we can delivery to you within 2-3 working days. The big order’s delivery time will be determined according to the type and quantity of products ordered.

What’s your term of payment?

Down Down

We accept T/T, Paypal, Western Union, Alipay, credit card, wechat and other suitable payment.
                  
       
                

Related Products

right
right
RO Membrane

RO Membrane

PH-6800

PH-6800

WS-9200/9250

WS-9200/9250

RO-8100

RO-8100

RO- 8200

RO- 8200

ORP-6800

ORP-6800

PH/ORP-600

PH/ORP-600

JIRS-803C

JIRS-803C

Related News

right
right
Guide to Ensuring Water Purity for drinking water tds Monitoring

Jul.01,2026

Guide to Ensuring Water Purity for drinking water tds Monitoring

Ensuring Water Purity: The Ultimate Guide for Drinking Water TDS Monitoring Maintaining high water quality standards is essential for public health and industrial safety. One of the most critical metrics for assessing water purity is Total Dissolved Solids TDS, which represents the combined content of all inorganic and organic substances dissolved in water. Utilizing high-precision equipment for drinking water tds measurement allows facilities to detect contamination and ensure that filtration systems are operating at peak efficiency. In this guide, we will explore the technical aspects of TDS monitoring and how advanced transmitters provide the reliability needed for modern environmental monitoring.

Understanding the Conversion of Electrical Conductivity to TDS

Jun.29,2026

Understanding the Conversion of Electrical Conductivity to TDS

Understanding the Conversion of Electrical Conductivity to TDS In water quality analysis, measuring the purity of a liquid often involves understanding the relationship between electrical conductivity to tds Total Dissolved Solids. While conductivity measures the ability of water to pass an electrical currentwhich is directly influenced by the concentration of ionized substancesTDS represents the total amount of mobile charged ions, including minerals, salts, or metals dissolved in a given volume of water. For professionals in environmental monitoring and water treatment, mastering this conversion is essential for maintaining system efficiency and ensuring regulatory compliance.

Industrial Guide to Electrical Conductivity Salt Water Monitoring

Jun.27,2026

Industrial Guide to Electrical Conductivity Salt Water Monitoring

Understanding Electrical Conductivity Salt Water Monitoring for Industrial Precision In the realm of water quality analysis, measuring the electrical conductivity salt water levels is a critical process for maintaining industrial efficiency and environmental safety. Conductivity serves as a direct indicator of the concentration of dissolved ions, which is essential for industries ranging from desalination plants to chemical manufacturing. Accurate monitoring prevents equipment corrosion, ensures product purity, and supports regulatory compliance. By utilizing advanced instrumentation, operators can achieve real-time insights into salt concentrations, allowing for immediate adjustments in water treatment processes to avoid costly downtime.

Technical Guide to Industrial ec meter circuit Design and Use

Jun.26,2026

Technical Guide to Industrial ec meter circuit Design and Use

Understanding the EC Meter Circuit: The Heart of Water Quality Analysis Electrical Conductivity EC is a fundamental parameter in environmental monitoring, aquaculture, and industrial water treatment. At the core of every reliable measurement device is a sophisticated ec meter circuit , which converts the physical conductance of a liquid into a precise digital reading. Whether you are managing a boilers deoxygenation process or monitoring nutrient levels in hydroponics, understanding how the circuit handles signal amplification and temperature compensation is key to ensuring data accuracy. This guide explores the technical intricacies of EC circuitry and how it integrates into professional water quality controllers.

Professional Guide to drinking water testing for tds and Purity

Jun.25,2026

Professional Guide to drinking water testing for tds and Purity

Drinking Water Testing for TDS: Ensuring Pure and Safe Water Quality Maintaining high water quality is essential for both health and industrial efficiency. When performing drinking water testing for tds , professionals seek to measure the Total Dissolved Solids TDS, which indicates the concentration of dissolved inorganic salts and organic matter in water. Whether you are managing a municipal water plant or a high-precision industrial facility, understanding the conductivity and TDS levels is the first step toward effective water treatment. In this guide, we explore the technical aspects of TDS measurement and the advanced instrumentation required for accurate monitoring.

Industrial TDS Controller Machine for Water Quality Management

Jun.23,2026

Industrial TDS Controller Machine for Water Quality Management

Maintaining precise water purity is critical for various industrial, agricultural, and domestic applications. A tds controller machine serves as the brain of a water treatment system, continuously monitoring Total Dissolved Solids TDS to ensure that water quality remains within specified limits. Whether you are managing a hydroponic farm, a pharmaceutical lab, or a large-scale reverse osmosis plant, having an automated way to regulate mineral concentrations is essential for efficiency and product consistency. In this guide, we will explore how these machines work and why they are indispensable for modern water management.

Optimize Water Purity with a TDS Controller in RO System

Jun.21,2026

Optimize Water Purity with a TDS Controller in RO System

Maximizing Water Purity: The Role of a TDS Controller in RO System Achieving consistent water quality is the primary goal of any reverse osmosis setup. A tds controller in ro system acts as the brain of the filtration process, monitoring Total Dissolved Solids TDS in real-time to ensure the output meets specific purity standards. Without precise control, users often face the dilemma of either wasting too much water or compromising on the purity of the drinking or process water. By integrating an intelligent controller, you can automate the blending process, extending the life of your membranes while maintaining a perfect balance of minerals.

Optimize Water Quality Using a tds controller for ro Systems

Jun.20,2026

Optimize Water Quality Using a tds controller for ro Systems

Optimizing Water Purity with a TDS Controller for RO Systems Maintaining the ideal balance of minerals in purified water is critical for both industrial processes and residential health. A tds controller for ro acts as the brain of a Reverse Osmosis system, ensuring that Total Dissolved Solids TDS remain within a precise range. Without an effective controller, RO systems can either strip too many essential minerals or allow contaminants to leak through as membranes age. This guide explores how these devices function, their importance in water treatment, and how to choose the right model for your specific needs to ensure consistent water quality.

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.


en_USEnglish