The DYS-1 Multi-functional Portable Meter, independently developed by OPS, can automatically recognize a wide range of OPS’s digital water quality sensors and probes, including dissolved oxygen (DO), pH, oxidation-reduction potential (ORP), salinity, electrical conductivity (EC), total dissolved solids (TDS), ammonia nitrogen, nitrate, and turbidity, is an ideal choice for water quality monitoring. This device integrates measurement and display functions, featuring a user-friendly keypad and backlit screen for easy operation and an intuitive interface. With its comprehensive functionalities, the DYS-1 is suitable for various applications, such as laboratory research, aquaculture, environmental monitoring, and industrial water treatment.

Supported Connected Sensor Case

Features of DYS-1 Multi-functional Portable Meter

-DYS-1 meter has a large LCD (Liquid Crystal Display) for clear reading

-Low power consumption, high reliability, intelligent measurement

-Having reliable, easy (one-hand operation) operation

-Support manual salinity compensation, air pressure compensation

-Manual/ auto-calibration

-Self-recognizing for all Desun brand sensors(less than 9V supply)

(dissolved oxygen (DO), pH, oxidation-reduction potential (ORP), salinity, electrical conductivity (EC), total dissolved solids (TDS), ammonia nitrogen, nitrate, and turbidity)

-Suitcase packaging, easy to carry

-Testing at any time anywhere

Benefits

1, Versatility:

The DYS-1 Multi-functional Portable Meter is compatible with various sensor types, allowing for comprehensive water quality measurements, including DO, pH, ORP, salinity, EC, TDS, ammonia nitrogen, nitrate, and turbidity. This makes it suitable for diverse applications such as environmental monitoring, industrial water treatment, and aquaculture.

2, User-Friendly Design:

Featuring an intuitive interface and a straightforward calibration process, the DYS-1 simplifies operation. The backlit display ensures clear visibility even in low-light environments, enhancing usability in the field.

Technical Parameters

Applications of the DYS-1 Multi-functional Portable Meter

1, Environmental Monitoring:

The DYS-1 is ideal for assessing water quality in natural water bodies such as rivers, lakes, reservoirs, and oceans. It helps environmental agencies and researchers track pollution levels, detect water quality fluctuations, and support conservation efforts.

2, Industrial Applications:

This device is well-suited for monitoring water quality in industrial processes, including wastewater treatment, manufacturing, and power plants. It ensures compliance with environmental regulations and helps optimize water usage and treatment efficiency.

3, Aquaculture:

The DYS-1 plays a crucial role in fish farming and aquaculture by maintaining optimal water conditions. It enables real-time monitoring of parameters like dissolved oxygen, pH, and salinity, ensuring a healthy aquatic environment and improving productivity.

4, Research and Education:

Widely used in scientific research and academic institutions, the DYS-1 supports studies related to environmental science, water chemistry, and ecological sustainability. It provides accurate data for laboratory experiments and field studies, helping students and researchers gain valuable insights.

With its broad range of applications, the DYS-1 Multi-functional Portable Meter serves as a reliable tool for professionals in various industries, contributing to better water management and environmental protection.

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The post DYS-1 Multi-functional Portable Meter for Water Quality Sensors &Probes appeared first on Water Quality Sensors.

The OPS UV Fluorescence Non-contact DSOD703 Oil Spill Detector is a non-contact sensor designed for real-time detection of oil on water. It uses oil’s natural fluorescence to detect oil and alerts you to unsuspected oil spills immediately. It provides 24/7 industrial and environmental water monitoring at effluent discharge or influent intake points.

DSOD703 Oil Spill Detector Monitorable Oils

Automotive motor oil, turbine oil, fuel oil, marine diesel, crude oil, civilian fuel oil, lubricants, mineral oils(non-synthetic), and so on.

DSOD703 Oil Spill Detector Measuring Principle – UV Fluorescence Technology

The OPS DSOD703 Oil Spill Detection and Monitoring Sensor System can detect a 1 μm-thick oil layer on the water’s surface at distances of 0-10 meters above it.

The Oil Spill Detection Sensor emits UV pulses onto the water surface or the ground, stimulating oil molecules in the target area to fluoresce. Utilizing the inherent fluorescent properties of these oil molecules, it identifies their chemical composition and sends an early warning signal to the operator.

DSOD703 Oil Spill Detector Installation Cases

You can see the value of oil spill detectors in real-world settings. The table below highlights successful applications in different countries:

Case Study 1: Installation in Sewage Channels, Russia

In an industrial wastewater system in Russia, the OPS DSOD703 oil spill detector was deployed above sewage channels to address long-standing risks of hydrocarbon contamination. This project demonstrates that the DSOD703 is not limited to open-water environments—it is equally effective in wastewater channels, drainage conduits, and industrial effluent pathways. This Russian deployment significantly enhanced operational visibility for wastewater treatment personnel, enabling them to manage pollution risks more effectively and maintain environmental compliance.  ( Read more info: https://opticaldosensor.com/desun-uniwill-dsod703-oil-spill-detector-installed-in-sewage-channels-in-russia/ )

Case Study 2: Coastal Oil Depot in Hainan

A major coastal oil storage facility in Hainan implemented the DSOD703 to strengthen its environmental safety measures. Positioned above the water near loading zones, the system provides continuous real-time monitoring. Operators now receive instant alerts at the earliest signs of oil leakage, enabling containment before the spill spreads. The depot reports a significant improvement in operational environmental compliance and risk reduction. ( Read more info: https://opticaldosensor.com/desun-uniwill-dsod703-non-contact-oil-spill-detector-installed-at-coastal-oil-depot-in-hainan/ )

Case Study 3: Underground Diesel Storage Tank Leak Monitoring

Even small leaks from underground diesel storage tanks can migrate through soil and eventually reach drainage systems or groundwater, causing costly environmental damage and regulatory challenges. To strengthen its leak-detection capability, they deployed OPS DSOD703 Oil Spill Detectors as part of its early-warning monitoring system.

The DSOD703 units were installed above inspection wells and drainage collection channels connected to the underground diesel tank containment area. This configuration enables the detector to continuously monitor the presence of oil on water surfaces within the drainage infrastructure. If leaked diesel reaches the monitoring points, the sensor immediately detects the oil film and triggers an alarm signal to the facility’s control system.

This case demonstrates that the DSOD703 is effective in open water bodies, wastewater channels, and coastal oil facilities, and that it serves as a reliable safeguard for underground fuel storage systems. By integrating oil-on-water detection at drainage and inspection points, industrial operators can establish a practical, cost-effective early-warning network for monitoring diesel storage leaks. ( Read more info: https://opticaldosensor.com/desun-uniwill-dsod703-oil-spill-detectors-installed-on-overseas-diesel-storage-project/ )

Case Study 4: DSOD703 Oil Spill Monitoring & Alarm Systems for Desalination

In a seawater desalination facility in the United Arab Emirates, the OPS DSOD703 oil spill detector was installed near seawater intake channels and drainage areas to monitor potential oil contamination from pumps, generators, or maintenance activities. The system continuously monitors the water surface in real time. It triggers immediate alarms when oil films are detected, allowing operators to respond quickly and prevent contamination from entering the desalination process. This deployment significantly improved environmental protection, operational safety, and regulatory compliance while safeguarding critical desalination equipment and surrounding coastal ecosystems. ( Read more info: https://opticaldosensor.com/desun-uniwill-dsod703-oil-spill-monitoring-alarm-systems-installed-in-seawater-desalination-plants-in-the-uae/)

You can trust these solutions to deliver real-time data, improve response, and support both environmental and economic goals.

Technical Parameter

Features and Benefits of Oil Spill Detectors

• Long-distance Non-contact Detection Sensor

With non-contact optical monitoring technology, the sensor is unaffected by marine biofouling or oil contamination, requiring no cleaning or maintenance and easier installation. Long-distance detection of oil, with a maximum monitoring distance of 10m above the water surface.

• High Sensitivity

Using UV LED light to excite the oil’s native fluorescence, the sensor can detect oil films as thin as 1 µm, minimizing false alarms.

• Online 24/7 Monitoring

24-hour continuous real-time monitoring, no daytime or nighttime limitations.

• IP68 Waterproof Rating

Rugged IP68-certified sealed design for harsh environments.

• Long Lifetime

Lifetime (>2 years), built-in system calibration, maintenance-free, low power operation (< 10W).

• RS485 Output Signal

The Oil Spill Detection System is equipped with an RS-485 interface that enables fast, easy sensor configuration via Modbus. It can be easily connected to the monitoring system. DSMC5100 can be equipped with it to read real-time monitoring data, and the data storage function provides users with a basis for analyzing the data.

Application Areas of Non-contact Oil Spill Monitoring System

• Waste Water

Monitors oil contamination in wastewater treatment facilities, ensuring compliance with environmental standards.

• Hydro Dam

Detects oil leaks from machinery and equipment, helping to prevent contamination in hydroelectric power reservoirs.

• Airports

Provides continuous monitoring for potential fuel and oil leaks in airport water runoff, protecting surrounding ecosystems.

• Oil Refinery

Enables early detection of oil spills and leaks in refineries, improving environmental safety and operational efficiency.

• Shipping Ports & Harbor

Monitors waterways for accidental oil spills, enabling immediate response and pollution control in busy port areas.

• Manufacturing

Helps detect oil leaks in industrial settings, reducing environmental impact and ensuring cleaner operations.

• Oil Platform

Continuously monitors offshore oil platforms to detect spills and leaks in real-time, minimizing ocean contamination risks.

• Powder Plant

Detects oil leaks in powder production facilities, reducing contamination risks in sensitive production areas.

• Drinking Water

Monitors sources of drinking water to ensure they remain uncontaminated by oil, safeguarding public health.

• Irrigation Canal

Ensures that irrigation channels remain free of oil pollutants, protecting agricultural water quality.

• Fuel Depot

Monitors storage and handling areas at fuel depots, detecting leaks before they impact the environment.

• Aquaculture

Detects oil contamination in aquaculture facilities, protecting water quality for aquatic farming.

Installation Diagram Reference of Non-contact Oil on Water Detection System

Comparison Table of Oil In Water Sensor and Oil Spill Detector

FAQs

1. What types of oil can the OPS Oil Spill Detector detect?

The OPS Oil Spill Detector is primarily used for testing industrial oils and cannot measure animal, vegetable, or synthetic oils. It supports testing of crude oil, diesel oil, lubricating oil, kerosene, and other industrial oils.

2. Can the oil spill monitor test the thickness of the oil film on the water surface? How thick can it be tested?

The oil spill detector primarily operates by detecting the fluorescence of petroleum-based substances, recognizing and quantifying the oil film through spectral excitation and signal analysis. Simply put, oil spill monitors cannot directly tell people the exact thickness of the water surface. It can only use the strength of the fluorescent signal reflected from the oil film to determine the amount of leakage, roughly.

We briefly divide the process into three steps:
Step 1: The detector adopts a 365nm UV pulsed LED, which vertically
irradiates the water surface and stimulates the oil film to produce fluorescence.
Step 2: The oil is excited to emit **400-650nm fluorescence** (the peak value varies with the type of oil; for crude oil, about 480nm; for light oil, about 420nm).
Step 3: The detector converts fluorescence data into oil spill alarms or concentration values using signal processing and classification algorithms.

3. What is the thickness or the sensitivity of the oil film that can be detected?

Mainly for oil films floating on the surface of water or the ground, the detection sensitivity is up to 1 micron in thickness (equivalent to 1 liter of oil spreading over 1000 square meters of water).

4. What about anti-interference performance?

Like flowing leaves in the water, plastic, water plants, etc. Non-petroleum substances (e.g., algae, organic debris) have different fluorescence properties and can be excluded from interference by spectral filtering and algorithms. In combination with our controllers, we can set up data to exclude such substances.

5. What is the Temperature limitation of the use environment?

0~60 degrees Celsius.

6. Is it disturbed by sunlight, and is it specially treated during installation?

It will be affected a little bit, so when installing it, we recommend equipping it with a light-avoiding Protective Shell. Of course, it is possible not to use it, but if we want to get a more perfect detection, the light shield will be very useful.

7. Why is detecting oil leaks early important?

Detecting oil leaks is essential for environmental, operational, and safety.

-Environmental Protection
Preventing Ecological Damage: Oil spills can devastate marine and terrestrial ecosystems, affecting plants, animals, and water quality.
Early Detection Minimizes Spread: Sensors can detect spills early, reducing the area affected and enabling quicker response to protect vulnerable habitats.

-Compliance with Regulations
Governments and environmental agencies enforce strict regulations on pollution and spill management. Sensors help organizations monitor and report compliance in real-time.

-Emergency Response
Early detection reduces risks to personnel and infrastructure by initiating containment measures promptly.

-Reducing Cleanup Costs
Early detection of spills limits the spread, significantly reducing cleanup costs.

Deploying oil spill detection sensors is a proactive measure to balance industrial operations with environmental stewardship and regulatory adherence.

8. Where should Non-contact Oil Spill Detectors be installed?

-Detecting oil storage leaks to prevent industrial plant accidents;
-Monitoring oil leaks in wastewater flowing into a wastewater treatment plant;
-Monitoring oil spills into rivers;
-Monitoring oil spills that are entering waterways;
-Oil leak detection in food or pharmaceutical production processes;
-Monitoring oil leaks at specific locations;
-Installation in locations where contact oil detection equipment is difficult to install;
-Manufacturing process requiring control of oil content;
-Places where sleep oil monitoring is required;
-Where surface oil monitoring is required;
-Areas where unmanned oil monitoring is needed in industrial settings.

9. In what situations are oil leaks or spills likely to occur?

Oil leaks or spills can occur in various situations, often due to technical failures, operational errors, environmental factors, or unforeseen accidents. Here are the primary situations where oil leaks or spills are likely:

-Industrial Operations
Pipeline Ruptures: Damage due to corrosion, wear and tear, or external impacts.
Tank and Storage Failures: Structural issues or improper maintenance of oil storage tanks.
Refining and Processing Facilities: Equipment malfunctions or accidents during oil refining and transfer.
Machinery Leaks: Oil leaks from industrial equipment, pumps, or generators.

-Transportation
Marine Oil Spills: Tanker accidents, collisions, or groundings in oceans or rivers.
Pipeline Transportation: Leaks due to pressure changes, corrosion, or natural events.
Rail or Road Transport: Accidents involving vehicles carrying oil or fuel.
Air Transport: Leaks from aircraft fuel systems or during refueling operations.

-Offshore Drilling and Production
Blowouts: Uncontrolled releases of oil or gas during drilling operations.
Platform Failures: Structural damage to offshore rigs or production facilities.
Subsea Equipment Issues: Leaks from underwater pipelines, wellheads, or valves.

-Storage and Handling
Improper Handling: Errors during loading, unloading, or transferring oil.
Aging Infrastructure: Leaks from old or poorly maintained storage systems.
Tank Overfilling: Spills caused by human or mechanical errors during filling.

-Human Error
Operational Mistakes: Incorrect procedures during oil processing or transport.
Negligence: Failing to perform routine maintenance or follow safety protocols.
Spill Containment Failures: Lack of proper systems or oversight to control spills.

10. Who can benefit from using a Non-contact Oil Spill Detection Sensor Instrument?

-Port and coastal agencies, oil companies, ship owners, and oil spill response organizations.
-Anybody who requires reliable round-the-clock oil spill surveillance, support for fast and efficient recovery of oil spills, and efficient deployment of boom and skimmers.
-Oil spill response vessels.

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The post Non-contact DSOD703 Oil Spill Detector appeared first on Water Quality Sensors.

DS660 Online Self-Cleaning Colour Sensor, using our own R & D and design of optical devices, color sensor using optical absorption method of measurement principle, input installation online measurement, avoiding the process of complex sampling and laboratory measurements. No reagents, no pollution, more economical and environmentally friendly. Compact size, easy maintenance, the sensor with an automatic cleaning brush, and automatic compensation for turbidity interference, even for long-term online water quality monitoring still has excellent stability. It can be widely used for monitoring drinking water, surface water, municipal and industrial wastewater processing.

Features of DS660 Colour Sensor

-Digital RS-485 signal with standard MODBUS protocol;

-Automatic compensation for turbidity interference ensures more accurate data and stable product performance;

-Equipped with a self-cleaning brush to prevent microbial buildup, a longer maintenance cycle;

-Built-in calibration parameters for easy on-site use and secondary calibration;

-Real-time continuous online measurement.

Specifications

Applications of DS660 Online Self-Cleaning Colour Sensor

-Wastewater Treatment:

Sensors measure the color of wastewater to ensure it is properly treated before being discharged into the environment. Color changes can indicate the presence of pollutants or incomplete treatment.

-Aquaculture Water Quality Monitoring:

In fish farms and aquatic cultivation, color sensors monitor the clarity and cleanliness of water, which is crucial for maintaining healthy aquatic ecosystems.

-River and Lake Monitoring:

Color sensors help detect changes in water quality, which may indicate pollution, algae growth, or sediment disturbances.

-Process Water Quality Control:

Many industries, such as food processing, paper production, and textiles, use color sensors to monitor process water quality, ensuring product consistency and regulatory compliance.

-Effluent Discharge:

Monitoring the color of water discharged from industrial processes helps companies ensure that wastewater meets acceptable environmental standards.

-Drinking Water Treatment:

Color sensors help monitor the color of treated water to ensure it meets regulatory standards and is free from contaminants that can affect the taste or appearance of drinking water.

FAQ – Water Color Sensor

What is a Water Color Sensor?
A Water Color Sensor is a device used to measure the color of water, often applied to assess water quality. It detects changes in the color of the water, which can indicate the presence of contaminants, organic matter, or chemicals in the water.

How does a Water Color Sensor work?
A Water Color Sensor typically operates using light absorption or scattering techniques. It shines light through the water and measures the amount of light that is absorbed or reflected by the water. Different substances in the water absorb or reflect light differently, allowing the sensor to detect changes in water color.

What is the measurement principle of a Water Color Sensor?
Most Water Color Sensors operate based on light absorption or scattering. The sensor emits light of various wavelengths (often using LEDs) through the water sample and measures the intensity of the light that passes through or is reflected. The sensor analyzes this data to determine the color of the water.

Why is water color important in water quality monitoring?
Water color can indicate the presence of various substances, such as dissolved organic matter, algae, sediment, or pollutants. A change in water color may suggest contamination or shifts in the ecological balance of a water source.

Can a Water Color Sensor detect specific contaminants?
While Water Color Sensors can detect color changes, they may not directly identify specific contaminants. However, certain pollutants, such as dissolved organic matter or algal blooms, can cause noticeable color changes that the sensor can detect.

What is the difference between turbidity and color in water analysis?
Turbidity measures the cloudiness caused by suspended particles, while color usually indicates dissolved substances. Turbidity sensors measure how much light is scattered by particles, whereas color sensors measure how light is absorbed by dissolved materials.

How is a Water Color Sensor calibrated?
Water Color Sensors are calibrated using reference solutions with known colors. These reference standards ensure that the sensor provides accurate measurements over a range of colors. Regular calibration is recommended to maintain accuracy.

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The post DS660 Water Colour Sensor for Real-time Colour Monitoring appeared first on Water Quality Sensors.

A CDOM sensor (Colored Dissolved Organic Matter sensor) is a device used to measure the concentration of dissolved organic matter in water, particularly organic substances that absorb and emit light. OPS DS630 CDOM Sensor adopts the analysis principle of the ultraviolet fluorescence method. It can be widely used for monitoring seawater, river water, drinking water, and wastewater.

The DS630 CDOM Probe features high precision, high sensitivity, and compact size, and it is equipped with an automatic cleaning brush that eliminates bubbles and reduces contamination’s impact on measurements, thereby extending the maintenance cycle. As an energy-efficient and environmentally friendly anti-fouling solution, it ensures long-term stability of measurements.

Measuring Principle of DS630 CDOM Sensor

CDOM absorbs light in the ultraviolet to blue range of the spectrum (250-500 nm) and often emits fluorescence in the blue to green spectrum. Sensors typically measure either the absorption or the fluorescence emitted by CDOM when excited by specific wavelengths of light.

Features of DS630 CDOM Sensor

-Digital RS-485 signal with standard MODBUS protocol;
-Measurement range 0 – 5000ppb.
-Utilizes the principle of UV fluorescence analysis to detect colored dissolved organic matter in water;
-Capable of measuring seawater and high-salinity samples;
-Equipped with a self-cleaning brush to prevent microbial attachment, extending the maintenance cycle;
-Built-in calibration parameters for convenient on-site use and secondary calibration.
-Low maintenance.

Specifications

Applications of CDOM sensor 

-Rivers and lakes monitoring
-Wastewater and water treatment
-Pollution surveillance & investigative monitoring
-Point source pollution tracking
-Hydrocarbon monitoring in ports & coastal areas
-Road and airport apron run-off monitoring
-Pollution ingress into infrastructures
-Monitoring industrial effluent discharge in natural waters
-Environmental monitoring
-Marine research
-Aquaculture

FAQs

What is Colored Dissolved Organic Material (CDOM)?
Colored Dissolved Organic Matter (CDOM) refers to organic matter dissolved in water that can absorb and emit light. CDOM is primarily composed of naturally derived organic substances, such as decomposed plant material and soil organic matter, and is widely found in bodies of water such as rivers, lakes, and oceans.

Why Measure CDOM in Water?
Measuring Colored Dissolved Organic Matter (CDOM) in water is important. Because of its propensity for absorbing UV and blue light, an overabundance of CDOM/FDOM can severely limit aquatic photosynthesis, sparking vegetative death and decomposition and sapping water systems of dissolved oxygen (DO). In sufficient quantities, CDOM/FDOM may also impact rates of air-gas exchange, influence water surface temperatures, and disrupt drinking water production.

What is the difference between CDOM and FDOM?
Fluorescent Dissolved Organic Matter (FDOM) is the fraction of CDOM that fluoresces. FDOM is a surrogate for CDOM and a fast and easy means of tracking DOM in natural waters.

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The post DS630 CDOM (Colored Dissolved Organic Matter) Sensor appeared first on Water Quality Sensors.

The digital conductivity sensor adopts a new generation of four-electrode/six-electrode technology, with a wide measurement range and automatic range switching. Automatic temperature compensation for the changing temperature of the water body. It has excellent anti-pollution ability and will not cause polarization even in harsh environments for long-term online monitoring. An RS458 output can be networked without a controller.

Features of DS480 Water Conductivity Sensor:

1. Small in size, it can be assembled in many ways.
2. Wide measurement range, automatic switching of measurement ranges.
3. Built-in temperature sensor, automatic temperature compensation.
4. four/six electrode technology, no polarization.
5. Digital Sensor, RS458 output, support Modbus.

Technical parameter:

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The post DS480 Water Conductivity Sensor Online Conductivity Probe appeared first on Water Quality Sensors.

OPS DS530 Online Oil in Water Sensor is a complete solution for oil in water measurements in the waste water. The oil in water sensor adopts the principle of ultraviolet fluorescence analysis, has high sensitivity, and can detect soluble and emulsifiable oils. In addition, the self-cleaning brush version can be selected to effectively eliminate the influence of oil pollution on the measurement. It is suitable for a variety of water quality measurement scenarios such as oilfield monitoring, industrial circulating water, condensate, wastewater treatment, and surface water stations.

Measuring Principle of DS530 Fluorescence Oil in Water Sensor

The ultraviolet fluorescence method is used to monitor the concentration of oil in the water, and the oil concentration in the water is quantitatively analyzed based on the fluorescence intensity emitted by the petroleum and its aromatic hydrocarbon compounds and compounds containing conjugated double bonds after absorbing ultraviolet light. The aromatic hydrocarbons in petroleum can produce fluorescence under the excitation of ultraviolet light, and the value of oil in water can be calculated according to the intensity of the fluorescence.

Features of Online Oil in Water Probe

-Digital sensor, RS-485 output, support MODBUS;

-With automatic cleaning brush to eliminate the impact of oil on the measurement;

-Eliminate the effects of ambient light on measurements with unique optical and electronic filtering techniques;

-Unaffected by suspended solids in water.

Technology Parameter

Applications of Oil in Water Monitor

-Drinking water

-Wastewater

-Process measurement and control technology

-The environmental monitoring

-Heat Exchanger Leak Detection

-Oil Tank Leakage Detection

-Intake Water Monitoring

-Reinjection Water Monitoring

-Industrial Wastewater Monitoring

-Marine Discharge Monitoring

-Plant Runoff / Storm Water Monitoring

Oil Measured by OPS Oil in Water Detection Sensor 

-Marine Diesel Engine

-Heating Oil

-Lubricating Oil

-Hydraulic Oil

Mineral Oil

-Diesel

-Petrol Diesel

-Fuel oil

OPS Oil in Water Sensors Use sites

Customer Comment

Comparison Table of Oil In Water Sensor and Oil Spill Detector

FAQs

1. How does an online oil-in-water sensor work?

For Fluorescence-based oil in water sensors: These sensors utilize fluorescent molecules that emit light when excited by a specific wavelength of light. When oil or hydrocarbons are present in water, they interact with the fluorescent molecules, causing a change in the emitted light’s intensity or wavelength. By measuring this change, the sensor can determine the oil concentration in the water.

The sensor typically consists of a probe or sensor head that is immersed in the water sample. This probe contains the necessary components for detecting and measuring the presence of oil. The data collected by the sensor can then be analyzed to determine the oil concentration in the water.

2. Why do we need to monitor oil in water?

Oils and hydrocarbons are often a major component of a variety of products, from fuels to solvents to the many chemicals used in industry during processing. In industrial production, some of these hydrocarbons, oils, and solvents can leak into sewers or, worse, directly into the environment. Similarly, domestic and agricultural fuel storage can lead to accidental spills into waterways and aquifers. In the oil industry, one ton of oil spilled can quickly spread over an oil slick covering an area of approximately 10,000 sq. m. Oil in water sensors and analyzers can be useful by giving early warning of problems as they occur.

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The post DS530 Online Oil In Water Sensor 0-200ppm & 0-5ppm appeared first on Water Quality Sensors.

COD, BOD, and TSS are important water quality parameters for wastewater treatment operations. The online COD BOD TSS Sensor Analyzer can be used to detect the Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), and Total Suspended Solids (TSS) values of water quality.

The DS500 series Online COD BOD TSS Sensor Analyzer is a new generation of environmental protection-type sensors launched by OPS. It is based on the UV absorption principle, reagent-free, pollution-free, more economical, and environmentally friendly. Small size, more convenient installation, and online continuous water quality monitoring. Automatic compensation for turbidity interference, automatic cleaning devices, and even long-term monitoring still have excellent stability. It can be used in harsh environments, and the monitoring data is stable and reliable. Multiple path length options are available to ensure our clients have the detection range that meets their wastewater monitoring demands.

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Online COD BOD TSS Sensor Analyzer Principle

Many organic substances dissolved in water absorb ultraviolet light. Therefore, the total amount of organic pollutants in water can be measured by measuring the absorption of these organic substances by ultraviolet light at a wavelength of 254 nm. DS500 series sensors use two light sources, one 254nm ultraviolet light and one 850nm infrared light, which can automatically compensate for the optical path attenuation and turbidity effects, thus achieving more stable and reliable measurement values. The sensors measure organics in a multi-dimensional way that results in improved correlations to water quality parameters such as BOD, COD, and TSS.

Features of DS500 series Online COD BOD TSS Sensor Analyzer

-Digital sensors, RS-485 output, Modbus protocol;

-With automatic cleaning function and few maintenance;

-No chemical reagents, no secondary pollution;

-Direct immersion COD measurement without sampling;

-Quick response time and precision for COD continuous measurement;

-Real-time data transmission allows you to get timely and accurate data on monitoring water;

-Corrosion-resistant shell, easy to install;

-Proven UVC LED technology, long lifetime, stable and instant measurement;

-Measurement of parameters such as COD, TOC, TSS, and temperature;

-Adopts low power consumption design and has the characteristics of anti-interference performance;

-Automatic compensation for turbidity interference for excellent test performance.

Technology Parameter

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Application Areas of Online COD BOD TSS Sensor Analyzer

-Surface Water Pollution Detection and Monitoring

-Urban Well Monitoring

-River & lake Water Quality Monitoring

-Sewage Treatment Plant Water Quality Monitoring

-Fishery Water Quality Pollution Monitoring

-Fish farming, aquaculture

-Swimming Pool Water Quality Monitoring

-Industrial and Mining Enterprises, Detection of Urban Sewage Discharge

-Water quality monitoring of petrochemical, chemical, power generation, pharmaceutical, food, electronic, water plant, etc

-Water quality inspection of urban parks

-Smart city water quality detection

-Urban wastewater treatment: detecting organic load variations during input/ treatment process/ output.

-Treatment of industrial effluents

-Drinking water: monitoring Organic matter in raw water, oxidation process, coagulation, activated carbon filtration.

OPS COD Sensors Use sites

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FAQs about Online COD BOD TSS Sensor Analyzer

1. What is COD, BOD, and TSS?

COD, BOD, and TSS are commonly used terms in environmental science and wastewater treatment.

COD: Chemical Oxygen Demand

COD measures the amount of oxygen required to chemically oxidize organic and inorganic matter in water. It is a measure of the pollution load, particularly the amount of organic pollutants, in water. COD is often used as an indicator of water quality and pollution levels in industrial and municipal wastewater.

BOD: Biochemical Oxygen Demand

BOD refers to the amount of dissolved oxygen consumed by microorganisms while decomposing organic matter in water. It indicates the level of organic pollution in water and the amount of oxygen needed for aerobic biological processes to break down organic pollutants. BOD is a key parameter in assessing the effectiveness of wastewater treatment processes and the overall health of aquatic ecosystems.

TSS: Total Suspended Solids

TSS represents the concentration of solid particles suspended in water, including organic and inorganic matter. These particles can include silt, sediment, organic debris, and other materials that are not dissolved in the water. It is an important parameter in assessing water clarity, sedimentation, and overall water quality, particularly in evaluating the effectiveness of sediment control measures and wastewater treatment processes.

2. Why Measure Chemical Oxygen Demand (COD)?

(1) Assessing Water Quality: COD measurement provides valuable information about the organic pollution level in water bodies. High COD levels indicate the presence of organic contaminants, which can adversely affect aquatic ecosystems and human health if not properly treated.

(2) Monitoring Wastewater Treatment Efficiency: In industrial and municipal wastewater treatment plants, measuring COD helps operators assess the efficiency of treatment processes. By monitoring COD levels in influent and effluent wastewater, operators can determine how effectively organic pollutants are being removed during treatment.

(3) Compliance with Regulations: Many environmental regulations set limits on the allowable COD levels in wastewater discharges. Industries and municipalities must comply with these regulations to avoid fines and penalties. Regular COD monitoring ensures compliance with regulatory requirements.

(4) Optimizing Treatment Processes: COD data allows wastewater treatment plant operators to optimize treatment processes for maximum efficiency. By tracking COD levels and adjusting treatment parameters accordingly, operators can improve the removal of organic pollutants and minimize environmental impact.

(5) Predicting Oxygen Depletion: High COD levels in water bodies can lead to oxygen depletion as microorganisms decompose organic matter, leading to conditions such as hypoxia or anoxia, which can harm aquatic life. Measuring COD helps predict and prevent such oxygen depletion events.

(6) Research and Development: COD measurement is also valuable in research and development efforts aimed at developing more efficient and sustainable wastewater treatment technologies. Researchers use COD data to evaluate the performance of new treatment methods and technologies.

3. What Processes Require Chemical Oxygen Demand (COD) Monitoring?

-Municipal and industrial wastewater treatment

-Primary Treatment.

-Secondary Treatment.

-Discharge limits.

-Continuous monitoring of organic matter load in the sewage treatment process.

-On-line real-time monitoring of influent and outflow water of the wastewater treatment.

4. Why is COD an Important Water Quality Parameter?

COD is an important water quality parameter and is used in a wide range of applications, including:

1, To confirm wastewater discharge and the waste treatment procedure meets criteria set by regulators;

2, To quantify the biodegradable fraction of wastewater effluent – ratio between BOD and COD;

3, COD or BOD measurements are also used as an indicator of the size of a wastewater treatment plant required for a specific location.

5. What to Consider When Selecting a Method to Analyze Oxygen Demand?

-Specific test application

-The oxidant to be used

-Time to completion

-Accuracy and precision of the measurement

VIDEOS

Related Articles

Top 9 Water Quality Sensors For Wastewater Treatments

Application of COD Sensor in sewage treatment

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Various Applications of OPS Chemical Oxygen Demand sensors

What are Online COD BOD TSS analyzers?

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OPS is delighted to introduce its newly developed DS810 PAH Sensor. The PAH Probe is a fluorimeter that accurately and continuously measures the concentration of Polycyclic Aromatic Hydrocarbons (PAHs) in water. These PAHs result from the incomplete combustion of petroleum and are present in most mineral oils or fuels. The sensor measures the total amount of PAHs passing through the lens, detecting and reporting PAHs from 0 to 1000 ppb (µg/L).

OPS PAH Measurement Sensor operates on the principle of UV fluorescence, which is much more sensitive than the conventionally used infrared scattering or absorption method. This enables the determination of even the slightest traces of PAHs, for example, in drinking and cooling water condensates. Application areas include the petrochemical industry, leakage detection in cooling and wastewater streams, and environmental monitoring. The Fluorescence PAH Analyzer can be used stationarily in shafts, flow, and pipelines. PAH probes connect to controllers for data display and recording. It features an RS-485 interface that allows easy and fast sensor configuration via Modbus.

Technical Parameter

PAH Sensor Measuring Principle

The measuring principle is based on the fluorescent properties of PAHs. Mineral oils rich in aromatic content will fluoresce when illuminated with ultraviolet light. The intensity of this fluorescence depends on the polyaromatic hydrocarbon (PAH) content of the oil. Typical oils that fluoresce include fuel oil, crude oil, hydraulic oil, and transformer oil. Each oil has its unique fluorescence intensity resulting from its specific PAH content. PAHs are integral parts of most mineral oil products and are a very specific indicator of oil contamination in water bodies and process water.

After excitation caused by a UV light source, PAHs emit light with longer wavelengths after a short time delay. The intensity of this light is measured and is proportional to the concentration of the PAHs. This measuring principle is considerably more sensitive than absorption and scattered light measurement. It is possible to detect even the slightest trace of PAH contamination in water. OPS PAH Sensor is a fiber-optic probe-based oil-in-water monitor. Fluorescence measurement assures continuous monitoring of oil and hydrocarbon contamination in water.

Features of the DS810 PAH Sensor

• PAH Measurement Range: 0 – 1000 ppb (µg/L)
• Equipped with an RS-485 interface that enables simple and quick sensor configuration via Modbus
• In situ measurement, no sampling no reagents
• Installations on the inlet and outlet of the scrubber
• Fluorescence probe for PAH/Oil in water measurements
• Corrosion-free Housing
• Detects oil in water through UV fluorescence
• Real-time in-line measurement
• Simple installation and operation

Advantages of DS810 PAH Probe

• Allowing for uninterrupted monitoring
• High Sensitivity with Low Cost
• Very High Accuracy
• Compliant with current IMO regulations
• Precisely measure hydrocarbons in water around oil wells
• Continuous PAH oil-in-water monitoring for the right price
• Minimal Maintenance
• High Sensitivity and Selectivity
• High Technology at a low price
• Fast Response Time
• Optical window with coating to minimize clogging

Cases of OPS PAH sensors for Marine Scrubbers Wash Water Monitoring System

Demand Background of PAH Sensor

Exhaust emissions from ships’ engines using heavy fuel oils release gases and particulates that can harm human health and the environment. To mitigate this pollution, the IMO established regulations through the Marine Environment Protection Committee (MEPC). Ships are now required to decrease emissions of nitrogen dioxide (NOx), sulfur dioxide (SOX), and particulates. To comply with the 2020 sulfur limit of 0.5%, the shipping industry is implementing various strategies, such as installing Exhaust Gas Cleaning Systems (scrubbers) to neutralize sulfur. Any discharge into the environment must be monitored to ensure it doesn’t contain harmful substances. Ships must install monitoring systems and ensure they perform comprehensive regulatory analysis, as mandated by the IMO, including testing for PAH, pH, turbidity, and temperature. This ensures accurate and robust measurements are conducted in line with regulatory requirements.

Now, Real-time detection may be possible with a new polycyclic aromatic hydrocarbon sensor (PAH), developed by OPS. The fluorescence PAH sensor accurately measures the PAH concentration in the inlet and outlet of marine gas scrubbers (ECGS), offering all the benefits of the digital sensor technology. With PAH sensors, precise and real-time data is possible and can be monitored — and acted upon — by operators on ocean rigs.

PAH Testing Purpose

1. Trace oil in water
2. Leak detection
3. Oil Spill Monitoring
4. Water Quality Monitoring
5. Hydrocarbons monitoring in water
6. Oil in Water Monitoring

PAH Monitoring Medium

1. Ballast Water
2. Discharge Water
3. Industrial Wastewater
4. Drinking Water
5. Washing Water
6. Cooling water & condensate return
7. Process water (refineries, desalination plants)
8. Rainwater (airport runoff monitoring)

Application Areas of PAH Sensor

• Monitoring drinking water resources
• Biological wastewater treatment plant protection
• Control of industrial discharges and wastewater
• PAH measurement in processed water
• Protection of membranes in desalination plants
• Control of washing water from purifiers on ships
• Marine ship Scrubber wash water monitoring
• Pipeline monitoring
• Bilge water monitoring
• Outflow detection in cooling condensates
• Environmental monitoring
• Petrochemical
• Wastewater monitoring
• Fuel detection in natural waters and sewage plants
• Gas Station/Refinery
• Bottom Water Monitoring
• Smoke Scrubbing
• Desalination device
• Airport Monitoring
• Maritime EGCS (Scrubber)
• Exhaust gas cleaning systems (EGCS) wash water monitoring
• Supervision and online control of fresh water in waterworks and boreholes
• Monitoring of wastewater in industrial and municipal sewage works
• Crude oil detection and leakage control at offshore oil pipelines
• Exhaust gas wash water monitoring

Benefits of Using a PAH Sensor

1, Early Detection and Prevention:

PAH sensors contribute to early detection and prevention of environmental pollution, allowing for proactive measures to mitigate potential damage. This leads to more effective pollution control strategies.

2, Cost-effective and Time-saving:

Compared to traditional lab-based analysis, PAH sensors offer a cost-effective and time-saving solution. Rapid data collection and analysis reduce operational costs and expedite decision-making processes.

3, Real-time Risk Assessment:

The real-time capabilities of PAH sensors enable immediate risk assessment. This empowers decision-makers to respond promptly to emerging environmental threats and implement targeted interventions.

4, Regulatory Compliance and Environmental Protection:

Employing PAH sensors supports regulatory compliance, ensuring that industries adhere to environmental standards. This, in turn, contributes to broader environmental protection efforts, fostering sustainable practices.

For any interest, freely contact sale@dshech.com for a quote.

Installation of PAH Sensor

FAQ About PAH Sensor

1. What is a PAH sensor?

A PAH sensor, which stands for Polycyclic Aromatic Hydrocarbon sensor, is a device used to detect the presence and concentration of polycyclic aromatic hydrocarbons in a given environment. Polycyclic aromatic hydrocarbons (PAHs) are organic compounds composed of multiple fused aromatic rings, and they are often found as pollutants in the environment due to incomplete combustion of organic materials such as coal, oil, gas, and wood. PAH sensors typically utilize various detection techniques such as spectroscopy, chromatography, or electrochemical methods to quantify PAH levels. These sensors are important tools in environmental monitoring, particularly in assessing air and water quality, as PAHs are known to be carcinogenic and can have harmful effects on both human health and the environment.

2. Why monitor PAH as a proxy for oil?

The EGCS Guidelines don’t request monitoring of PAH content specifically; rather, they focus on oil. However, the challenge lies in monitoring oil content well below 15 ppm continuously. Traditional oil-in-water sensors didn’t seem promising. Hence, an alternative approach emerged: using PAH sensors. These sensors can detect very low “oil” content, leveraging the presence of PAH compounds in oil.

3. Why monitor PAH in wash water?

Exhaust emissions from ships’ engines using heavy fuel oils release gases and particulates that can be detrimental to human health and the environment. In response, the IMO, through the Marine Environment Protection Committee (MEPC), established regulations to mitigate this pollution. Ships are now required to reduce nitrogen dioxide (NOX), sulfur dioxide (SOX), and particulate emissions. To comply with the 2020 sulfur limit of 0.5%, the shipping industry is adopting strategies, including installing Exhaust Gas Cleaning Systems (scrubbers) to neutralize sulfur. However, any discharge into the environment must be monitored to ensure nothing harmful is released. Therefore, ships need to install monitoring systems and ensure they perform the full regulatory analysis mandated by the IMO. This includes monitoring parameters such as PAH, pH, turbidity, and temperature to ensure robust and accurate measurements are made by regulatory requirements.

4. What are PAHs?

Polycyclic aromatic hydrocarbons (PAHs) constitute a large group of organic compounds with two or more fused aromatic rings. They occur naturally in petroleum and are also produced as by-products of fuel combustion.

PAHs represent an important class of environmental contaminants that are known to accumulate in ecosystems. The US EPA has identified 16 PAH compounds as priority pollutants. Some of these compounds are carcinogenic and/or mutagenic to mammals. Moreover, they exhibit both acute toxicity and sub-lethal effects on certain aquatic organisms. PAHs may also bio-accumulate in edible shellfish, providing a pathway to humans.

One source of PAHs is the incomplete combustion of fuel oils. Although engines and boilers are designed to optimize fuel combustion, exhaust gases inevitably contain a proportion of incompletely combusted material. This results in gaseous hydrocarbon and particulate emissions ranging from methane to very large complex molecules, including polycyclic aromatic hydrocarbons. While low molecular weight PAHs are primarily found unbound in the gaseous phase of the exhaust stream, heavier molecular weight PAHs constitute a group of substances that bind onto soot created during combustion.

5. How do you measure PAH in water?

Gas Chromatography-Mass Spectrometry (GC-MS):
This is one of the most widely used techniques for PAH analysis. GC separates the different PAH compounds based on their chemical properties, and MS detects and quantifies them based on their mass-to-charge ratio.

High-Performance Liquid Chromatography (HPLC):
HPLC can also be used for PAH analysis, especially when coupled with fluorescence or UV-visible detection methods. HPLC separates PAH compounds based on their affinity for the stationary phase.

Liquid Chromatography-Mass Spectrometry (LC-MS):
LC-MS combines the separation power of liquid chromatography with the detection capabilities of mass spectrometry. It can be effective for analyzing PAHs in complex matrices.

Thin-Layer Chromatography (TLC):
Although less commonly used for quantitative analysis, TLC can be used for qualitative screening of PAHs in water samples.

Related Video

Related Products

Oil In Water Sensor

Related Blogs

OPS Ships 7 Sets of PAH, pH and Turbidity Sensors to South Korea for Marine EGCS Systems

Success Case of OPS PAH Sensors used for Exhaust Gas Cleaning System (EGCS)

Why do exhaust gas cleaning systems (EGCS) need a PAH measurement sensor?

PAH sensors can be employed in marine scrubber systems(MS-SOx) for several purposes 

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The post DS810 PAH Sensor Analyzer for Marine Scrubbers (EGCS) Wash Water Monitoring System appeared first on Water Quality Sensors.

The Inline Total Dissolved Solids (TDS) Sensor adopts a new generation of four-electrode/ six-electrode technology, with a wide measurement range, automatic switching measurement range, a built-in temperature sensor, and real-time temperature compensation. It has excellent anti-pollution ability and will not cause polarization even in a harsh environment for long-term online monitoring. An RS-485 output can be networked without a controller.

Features:

1. Digital sensor, RS485 output, support Modbus;
2. Wide measurement range, automatic switching measurement range.
3. Built-in temperature sensor, real-time temperature compensation;
4. Four-electrode/six-electrode technology, no polarization.

Technical parameter:

Inline Total Dissolved Solids (TDS) Sensor Video

FAQs

1. What is TDS?

TDS stands for Total Dissolved Solids, and it is used to measure the concentration of dissolved substances in a liquid, typically water. These substances include minerals, salts, and organic matter that are small enough to pass through a filter.

2. What is TDS used to measure?

TDS is used to:

Assess water quality – Higher TDS levels may indicate hard water or contamination.

Monitor drinking water purity – Safe drinking water usually has a TDS below 500 mg/L.

Evaluate the performance of water filters – Checking TDS before and after filtration.

Test aquariums, hydroponics, and pools – To maintain healthy water conditions for plants or animals.

Industrial applications – Like boiler water quality, or in food and beverage production.

3. What is a TDS sensor?

A TDS sensor is an electronic device that measures the total concentration of dissolved solids in water. It usually works by:

Measuring electrical conductivity (EC) of the water, because dissolved ions increase conductivity.

Converting the EC value into an estimated TDS value, typically reported in ppm (parts per million).

Common Types:

Handheld TDS meters – Portable and widely used for on-the-spot water testing.

Inline TDS sensors – Installed in water systems for continuous monitoring.

Note: TDS sensors give an estimate of total solids but don’t identify what the solids are (e.g., specific minerals or contaminants). For a detailed analysis, lab testing is needed.

4. What’s the difference between TDS and EC sensors?

EC sensor gives a direct reading of electrical conductivity (µS/cm or mS/cm).

TDS sensor converts EC to ppm using a multiplier.

Some devices offer dual EC/TDS readings.

5. What does a TDS sensor measure?

A TDS sensor estimates the total concentration of dissolved solids in water by measuring its electrical conductivity (EC) and converting it to parts per million (ppm).

6. What is a good TDS value for drinking water?

Ideal range: 0–300 ppm

Acceptable: Up to 500 ppm (as per WHO and EPA guidelines)

Above 500 ppm: May affect taste, and could indicate contamination or high mineral content

7. How does a TDS sensor work?

It measures electrical conductivity in water. Since dissolved salts and minerals conduct electricity, higher conductivity means higher TDS. The sensor converts this data into a TDS reading, typically using a conversion factor (~0.5–0.7, depending on the sensor and solution type).

8. What substances contribute to TDS?

-Calcium

-Magnesium

-Sodium

-Potassium

-Bicarbonates

-Chlorides

-Sulfates

-Organic matter and some metals

9. How often should I calibrate a TDS sensor?

Typically: Every 3–6 months

Or whenever readings seem inaccurate

10. Can TDS sensors be used in hot water?

Most TDS sensors are rated for room temperature to about 50°C (122°F). For higher temperatures, use a sensor rated for industrial or lab use.

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The post DS285 Inline Digital Total Dissolved Solids (TDS) Sensor appeared first on Water Quality Sensors.

1. El medidor de OD DYS-1 tiene una gran pantalla LCD (pantalla de cristal líquido) para una lectura clara.
2. Salida de señal RS-485.
3. Bajo consumo de energía, alta confiabilidad, medición inteligente.
4. Tener una operación confiable y fácil (operación con una sola mano).
5. Admite compensación de salinidad manual y compensación de presión de aire.
6. Calibración manual/automática.
7. Muestra la temperatura DO.
8. Embalaje de maleta, fácil de llevar.
9. Pruebas en cualquier momento en cualquier lugar.

APPLICATIONS:

Puede ser ampliamente utilizado en acuicultura de agua dulce y acuicultura marina.

PARÁMETROS TÉCNICOS Y DIMENSIONES:

DIMENSIONES:

INSTALACIÓN:

Apague la cubierta de la interfaz en la parte superior del medidor de agua medido a mano. Inserte un extremo del cable del sensor en la parte superior del medidor de agua medido a mano y apriételo.

MOSTRAR PRODUCTOS RELACIONADOS:

VÍDEOS:

Productos relacionados: 

Sensor y Medidor de oxígeno disuelto en agua para acuicultura

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