Y4003 Multi-parameter Sonde for Deep Water
Yosemitech Y4003 deep-water multi-parameter sonde features a robust structural design, an in-house developed titanium (Ti) waterproof connector, and is specifically engineered for deep water/well, marine, and other demanding working conditions. The main unit can connect up to six probes, with options including DO, pH, ORP, conductivity (salinity), turbidity, chlorophyll, BGA, OIW, and depth sensors, which can be freely selected based on application requirements. All probes are constructed from titanium, ensuring excellent corrosion resistance.
The Y4003 is equipped with a self-cleaning brush that effectively cleans the measurement surface, removes bubbles, prevents microbial attachment, and ensures stable performance under underwater pressures of up to 200 meters. This makes it suitable for monitoring needs in deepwater lakes, oceanic environments, underground drilling, harsh wastewater treatment, and other mid-to-deep water scenarios.
- RS485 output with standard MODBUS protocol, facilitating seamless integration with data acquisition platforms and water quality automatic monitoring stations.
- The main body includes six standardized probe interfaces and a central interface for the cleaning brush, enabling flexible plug-and-play functionality with Yosemitech probes and automatic identification.
- All calibration parameters are stored within individual sensors, allowing for convenient on-site replacement, calibration, and maintenance.
- The configured probes are all made of titanium, providing high-pressure resistance and reliable operation at depths of up to 200 meters underwater.
| Name | Deep Water Multi-parameter Sonde |
| Model | Y4003 |
| Measuring depth | 0-200m |
| Main body information | connect up to 6 probes, 1 central cleaning brush |
| Size | Φ84mm*544.4mm |
| Operating temperature | 0-50℃ |
| Calibration data | The calibration data is stored within the probe. The probe can be removed for direct calibration. |
| Output | RS-485 output, MODBUS protocol |
| Brush control | The default cleaning frequency is once every 30 minutes. The cleaning interval can be set. |
| Full load power consumption | 0.8W(non-wiping), 2W(wiping)；DC 12-24V, ≥1A |
| IP range | IP68 |
| Weight | 3.25kg（main body+6 probes） |
| Status alert | Power supply abnormal alarm, communication abnormal alarm, cleaning brush abnormal alarm |
| Cable length | With waterproof connectors, 30 meters (default), customizable |
| Material | PVC, Ti, anti-fouling copper |
| Sensor | Model | Range | Accuracy |
| DO | Y504-D | 0-50mg/L or 0-500%saturation | 0-20mg/L:±1%or±0.2mg/L ＞20mg/L:±5%or±0.6mg/L |
| TUR | Y510-D | 0-1000NTU or 0-4000NTU | ±5%or0.3NTU，take the bigger one |
| Conductivity Salinity | Y523-D | conductivity：0-200mS/cm (0-2mS/cm、2-20mS/cm、20-200mS/cm) | ±1%or0.01mS/cm，take the bigger one |
| salinity：0-175ppt | ±1ppt | ||
| TDS：0-128000mg/L | / | ||
| OIW | Y616-D | 0-50ppm or 0-150ppm | Linearity：R²＞0.999 |
| pH | Y532-D | 0-14 pH | ±0.02 pH |
| ORP | Y533-D | ﹣1999-1999mV | ±20mV |
| CHL | Y515-D | 0-500μg/L | ±5% or 0.5μg/L，take the bigger one |
| BGA | Y613-D | 0 - 300,000 cells/mL (can be set at 0 - 2,000,000 cells/mL) | Linearity：R²＞0.999 |
| Depth | Y700-D | 0m-2m...200m | ＜0.1% FS |
- Multiparameter Sonde
- 30m Cable（default), Customizable
- User Manual
- Delivery Inspection Report
- Other Accessories
Oceanographic Research:
Marine Ecosystem Studies: Measure parameters such as temperature, salinity, dissolved oxygen, pH, turbidity, and chlorophyll to understand marine ecosystems' health and dynamics.
Climate Change Research: Track changes in oceanographic conditions over time to study the impacts of climate change on marine environments.
Deep-Sea Exploration: Collect data from deep-sea environments to discover new species and understand the geology and chemistry of the ocean floor.
Environmental Monitoring:
Pollution Detection: Monitor for pollutants like oil, heavy metals, and chemicals in deep water to detect and address pollution sources.
Water Quality Assessment: Continuously monitor water quality parameters to ensure the health of aquatic ecosystems and compliance with environmental regulations.
Harmful Algal Bloom (HAB) Monitoring: Detect and track harmful algal blooms that can affect marine life and human health.
Fisheries and Aquaculture:
Habitat Monitoring: Ensure optimal conditions for fish health and growth by monitoring parameters such as dissolved oxygen, temperature, and turbidity.
Resource Management: Use data to manage fish stocks and aquaculture operations more effectively, ensuring sustainable practices.
Hydrographic Surveys:
Mapping and Charting: Collect data for accurate mapping and charting of underwater features and seabed topography.
Subsea Infrastructure: Monitor conditions around subsea pipelines, cables, and other infrastructure to ensure their integrity and safety.
Deep Lake and Reservoir Studies:
Ecosystem Health: Study the health and dynamics of deep freshwater lakes and reservoirs by measuring key parameters.
Water Supply Management: Monitor water quality to manage and protect drinking water sources.
Multiparameter water quality meters measure a number of water quality parameters, including pH, orp, conductivity, dissolved oxygen, turbidity, temperature, oil in water, blue green algae, chlorophyll, etc.
pH:
Changes in pH in surface water quality affect the ability of algae to take up oxygen and the sensitivity of animals to food intake;
Conductivity:
mainly measures the electrical conductivity of water and monitors the total ion concentration in the water body. Contains a variety of chemicals, heavy metals, impurities and so on a variety of conductive material total.
Dissolved oxygen:
DO in surface water in addition to the usual water sulfide, nitrite, ferrous ions and other reducing substances consumed, but also by the respiration of microorganisms in the water as well as organic matter in the water by the oxidative decomposition of aerobic microorganisms consumed. Dissolved oxygen is an important indicator for surface water monitoring, and is an indication of whether the water body has the ability to self-purify.
Turbidity:
The turbidity value is a visual reflection of the turbidity of the water body. Turbidity is mainly caused by the insoluble substances in the water, insoluble substances including sediment suspended in the water, corrosive substances, planktonic algae and colloidal particles. Reducing turbidity also reduces bacteria, coliform bacteria, viruses, cryptosporidium, iron, manganese, etc. in the water.
Temperture:
Changes in surface water temperature can have a significant negative impact on aquatic wildlife, affecting biological growth and the rate at which fish and shrimp species feed, as well as the timing and efficiency of their reproduction.
Yosemitech supply two types of Multi parameter Water Quality Sensor and one type of Handheld Multi parameter Water Quality Meter. Our multiparameter water quality sensor & meter price is affordable with high quality.
1. Online water quality analysis and monitoring of surface water and groundwater quality of river section, river, reservoir and so on.
2. Internet of things, intelligent agriculture, online aquaculture monitoring.
3. Water Quality real-time monitoring, red tide monitoring and early warning, blue-green algae monitoring and early warning, sudden pollution accident early warning, surface water quality investigation.
4. Research projects. Investigation of pollution sources in the estuary, temporal and spatial distribution of nitrogen and phosphorus in aquaculture area, continuous and automatic monitoring in coastal waters.
Hello, everyone! In this video, we will introduce our Portable Multi Parameter Meter. It can monitor water quality standard 5 parameters(water temperature, pH/ORP, dissolved oxygen, conductivity, turbidity), also can monitor chlorophyll, blue-green algae, oil in water and more.
Yosemitech Y4000 multiparameter water quality sonde adopts multi-in-one structure design, each single parameter sensor is RS485 digital probe and tightly inserted with the parent water surface, calibration data is stored in the single parameter sensor, which can be easily calibrated or replaced on site. Online monitoring of conventional 5 parameters (water temperature, pH/ORP, dissolved oxygen, conductivity, turbidity), can also monitor chlorophyll, blue-green algae, oil in water, etc., up to support a mother insert 6 probes, detect 7 parameters. This multiparameter meter also comes with a clean scraper, which can effectively clean the measurement end face, scrape out bubbles, prevent microbial attachment, and can calmly meet the monitoring needs of various water environment conditions such as sewage treatment, surface water, ocean and groundwater.
From April 21th to 23rd, 2025, IE Expo China 2025 concluded successfully at the Shanghai New International Expo Centre. As a highly anticipated communication platform in the industry, the exhibition attracted exhibitors, experts, scholars, and industry elites from around the world to gather in Shanghai. Through various forms such as cutting - edge technology displays and high - end forum sharing, it created a professional and forward - looking audio - visual feast for the industry.
Suzhou Yosemite Technology Co., Ltd. ("YOSEMITECH"), which has been deeply involved in the water quality monitoring field for over 11 years, always adheres to the mission of "Water Monitoring Made Simple". YOSEMITECH showcased its self - developed water quality monitoring sensors and instruments at the exhibition. As a manufacturer of water quality monitoring sensors, we had in - depth exchanges with domestic and foreign partners and industry peers during the exhibition. It fully demonstrated its profound expertise in areas such as water quality sensor research and development and intelligent monitoring system integration, and continuously empowered global water quality monitoring scenarios with innovative technologies to promote the efficient and intelligent development of the industry.
