Y4000 Online Multiparameter Water Quality Sonde
Yosemitech Y4000 Online Multiparameter Water Quality Sonde is designed for continuous, real-time monitoring of multiple water quality parameters in rivers, lakes, reservoirs, wastewater treatment facilities, aquaculture systems, and coastal environments.
Featuring a modular sensor architecture, Y4000 accommodates up to six interchangeable digital probes and supports simultaneous monitoring of up to seven parameters, depending on the selected sensor configuration.
Available measurements include temperature, dissolved oxygen (DO), pH, oxidation-reduction potential (ORP), conductivity, salinity, turbidity, chlorophyll, blue-green algae (BGA), oil in water, and water depth.
An integrated automatic cleaning brush helps reduce fouling, sediment buildup, and air bubbles on sensor measurement surfaces, supporting reliable long-term deployment and reducing manual cleaning requirements.
Each digital probe stores its own calibration data, allowing individual sensors to be calibrated, maintained, or replaced in the field without replacing the complete monitoring system.
With RS485 communication and the Modbus protocol, Y4000 can be integrated into compatible data loggers, PLCs, SCADA systems, and remote water quality monitoring stations.
- 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
- River & Surface Water Monitoring
Continuous monitoring of rivers, lakes, and reservoirs to support environmental assessment and pollution detection.
- Wastewater Treatment Monitoring
Track key water quality indicators for process optimization and continuous monitoring of treated effluent.
- Aquaculture Water Quality Monitoring
Monitor dissolved oxygen, salinity, and other water quality conditions in fish farms and aquaculture facilities.
- Coastal & Marine Water Monitoring
Support coastal water quality observation, algae monitoring, and marine environmental research.
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.
In this video, we will delve into the entire calibration process of Conductivity Sensor for Y4001 Handheld Meter.
Calibration is a crucial step for ensuring the accuracy and reliability of sensor measurement data.
This video includes:
Preparation: required tools and precautions.
Step-by-step operation: from connecting the equipment to completing the calibration, hands-on instruction.
Y4003 multi-parameter sonde can operate stably at a depth of 200m underwater.
-Robust and pressure-resistant design, self-developed Ti waterproof connectors -6 sensor interfaces of uniform specifications and 1 central cleaning brush interface (optional DO, pH,ORP, conductivity/salinity, turbidity, chlorophyll, BGA,OIW, Depth probes etc. ).
-All probes are made of Ti, pressure-resistant and corrosion-resistant.
-It is utilized for the monitoring of water environments, including oceans, deep lakes, underground wells, and challenging wastewater systems.
If you want to know more information or quotation, feel free to contact us!
