Y4000 Online Multiparameter Sonde
Yosemitech Y4000 multi-parameter sonde features an integrated multi-in-one structural design. Each individual probe is an RS485 digital probe with calibration data stored directly in the single-parameter sensor. This allows for easy on-site calibration or replacement of each probe. The sonde supports online monitoring of multiple parameters, including temperature, pH, ORP, DO, conductivity, turbidity, chlorophyll, BGA, OIW, salinity, and depth. The main body can connect up to six probes, enabling simultaneous detection of seven parameters. Additionally, the Y4000 is equipped with a self-cleaning brush that effectively cleans the measurement surface, removes bubbles, prevents microbial attachment, and ensures reliable performance across various water environments, such as wastewater treatment, surface water, oceanic, and groundwater monitoring.
- RS485 output with standard MODBUS protocol, facilitating seamless integration between data acquisition platforms and water quality automatic monitoring stations.
- The main body supports connection to up to six probes for parameters such as DO, conductivity (salinity), turbidity, pH, ORP, chlorophyll, BGA, OIW, and depth.
- Equipped with a self-cleaning brush for scheduled cleaning at predefined intervals, minimizing errors caused by bubbles or contamination.
- Each probe can be individually replaced, calibrated, and maintained on-site, offering flexibility and convenience.
- Features an efficient acquisition algorithm with a system-wide response time of ≤30 seconds.
| Name | Online Multiparameter Sonde |
| Model | Y4000 |
| Measuring depth | 0-30m |
| Main body information | connect up to 6 probes, 1 central cleaning brush |
| Size | Φ84mm*476mm |
| IP range | IP 68 |
| Operating temperature | 0-50℃ |
| Calibration data | The calibration data is stored within the probe. The probe can be removed for direct calibration. |
| Output | 1 channel 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) |
| Power supply | Whole machine: DC 12-24V, ≥1A; Single probe: 9-24V, ≥1A |
| IP range | IP68 |
| Weight | 2.3kg（main body+6 probes） |
| Status alert | Power supply abnormal alarm, communication abnormal alarm, cleaning brush abnormal alarm |
| Cable length | With waterproof connectors, 10m (default), customizable |
| Material | POM, Ti, anti-fouling copper |
| Sensor | Model | Range | Accuracy |
| DO | Y504-B | 0-50mg/L or 0-500%saturation | 0-20mg/L:±1%or±0.2mg/L ＞20mg/L:±5%or±0.6mg/L |
| TUR | Y510-C | 0-1000NTU or 0-4000NTU | ±5%or0.3NTU，take the bigger one |
| Conductivity Salinity | Y523-B | conductivity：0-200mS/cm (0-2mS/cm、2-20mS/cm、20-200mS/cm) Salinity: 0-175ppt TDS: 0-128000mg/L | ±1%or0.01mS/cm，take the bigger one |
| ±1ppt | |||
| / | |||
| OIW | Y616-C | 0-50ppm or 0-150ppm | Linearity：R²＞0.999 |
| pH | Y532-B | 0-14 pH | ±0.02 pH |
| ORP | Y533-B | ﹣1999-1999mV | ±20mV |
| CHL | Y515-B | 0-500μg/L | ±5% or 0.5μg/L，take the bigger one |
| BGA | Y613-C | 0 - 300,000 cells/mL (can be set at 0 - 2,000,000 cells/mL) | Linearity：R²＞0.999 |
| Depth | Y700-B | 0m-2m...100m | ＜0.1% FS |
- Multiparameter Sonde
- 10m Cable（default), Customizable
- User Manual
- Delivery Inspection Report
- Other Accessories
Sewage and Wastewater Treatment:
Continuous monitoring of effluent quality to ensure compliance with environmental regulations.
Optimization of treatment processes based on real-time data.
Surface Water Monitoring:
Monitoring lakes, rivers, and reservoirs for pollution, eutrophication, and other environmental concerns.
Supporting environmental research and management.
Oceanographic Studies:
Studying marine ecosystems by monitoring water quality parameters.
Detecting oil spills and monitoring algal blooms.
Groundwater Monitoring:
Ensuring the safety and quality of groundwater for drinking purposes.
Monitoring the impact of agricultural and industrial activities on groundwater.
Industrial Applications:
Monitoring process water in various industries to ensure it meets quality standards.
Managing cooling water systems to prevent issues like scale, corrosion, and biological growth.
Aquaculture:
Ensuring optimal water quality in fish farms to promote healthy fish growth.
Monitoring harmful algae that can affect aquatic life.
Municipal Water Supply:
Ensuring safe drinking water by monitoring water quality from source to tap.
Detecting and addressing contamination issues in the distribution system.
Environmental Impact Assessments:
Providing baseline data for environmental impact assessments.
Ongoing monitoring to detect changes due to project implementation.
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.
