U-50
Multi-parameter Water Quality Checker
The U-50 Multi-parameter Water Quality Checker is a rugged, field-ready water quality monitoring instrument designed to measure and display up to 11 parameters simultaneously using a single integrated sensor probe. By consolidating multiple sensors into one probe, it enables efficient and reliable field water quality testing for groundwater, river water, surface water, and wastewater applications.
This portable multi-parameter water quality meter supports measurement of pH, ORP, dissolved oxygen (DO), conductivity, salinity, total dissolved solids (TDS), seawater specific gravity, temperature, turbidity, and water depth (model dependent). All measurement data is displayed in real time on a large backlit LCD and up to 10,000 datasets can be stored and transferred via USB.
Engineered for demanding outdoor environments, the U-50 features a waterproof sensor probe (JIS protection level 8), shock-resistant control unit, and chemical-resistant construction materials. One-touch automatic calibration, Auto-Hold functionality, on-screen instructions, and diagnostic error notification ensure simple and reliable operation in the field.
GPS-compatible models (U-52G / U-53G) allow recording of latitude and longitude alongside measurement data, supporting location-based environmental surveys of rivers, lakes, coastal waters, marshes, and drainage systems.
The U-50 Multi-parameter Water Quality Checker combines multi-parameter measurement capability, rugged outdoor design, and intuitive operation to support comprehensive water quality monitoring and environmental assessment activities.
Why Choose U-50
Simultaneous measurement and display of up to 11 parameters using a single probe
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Multiple sensors consolidated in one probe with individually replaceable electrodes
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One-touch automatic calibration for pH, dissolved oxygen, conductivity, turbidity, and depth
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Rugged outdoor design with shock-resistant cover and JIS protection level 8 (sensor probe)
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Easy one-hand operation with large 3.5-inch LCD display and backlight
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Data memory storage of up to 10,000 datasets with USB data transfer
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GPS compatible models for recording latitude and longitude (U-52G / U-53G)
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Chemical-resistant materials including PPS, SUS316L, SUS304, FKM, PEEK, titanium, FEP membrane, and POM
Key Advantages of U-50
1.
Simultaneous Multi-Parameter Measurement
Measures pH, ORP, dissolved oxygen, conductivity, salinity, TDS, seawater specific gravity, temperature, turbidity, and water depth in a single deployment.
2.
Rugged Outdoor Field Design
Waterproof sensor probe with shock-resistant control unit designed for harsh field environments and outdoor measurements.
3.
Intuitive One-Touch Operation
Equipped with one-touch automatic calibration, auto-hold function, on-screen instructions, and diagnostic error notification.
4.
Advanced Data & GPS Capability
Stores large volumes of measurement data and transfers via USB; GPS-compatible models record location data for environmental surveys.
Applications of U-50
Groundwater Monitoring
Lower the probe into an intake to collect and store up to 10,000 datasets for later PC transfer.
River and Surface Water Testing
Optional 30 m cable enables deployment at varying depths in lakes, rivers, and coastal waters.
Marsh and Wetland Measurements
Waterproof control unit allows operation without concern for splashing or accidental immersion.
Drainage Ditch and Wharf Monitoring
Instantly monitor, collect, and store data while moving the submerged sensor probe.
Environmental Surveys
GPS-compatible models support recording latitude and longitude for environmental assessment activities.
Technical Specifications of U-50
| Specification | U-51 | U-52 | U-52G | U-53 | U-53G |
|---|---|---|---|---|---|
| Sensor Probe | |||||
| Measurement temperature | -10 to 55°C | ||||
| Maximum sensor diameter | Approx. 96 mm | ||||
| Probe length | Approx. 340 mm | ||||
| Cable length | Standard: 2 m, Option: 10 m, 30 m | ||||
| Mass | Approx. 1,800 g (Approx. 3.97 lbs) | ||||
| Measurement depth | Max. 30 m | ||||
| Water resistance | JIS protection level 8 | ||||
| Liquid contact materials | PPS, glass, SUS316L, SUS304, FKM, PEEK, titanium, FEP membrane, POM | ||||
| Control Unit | |||||
| Outer dimensions | 115 (W) × 66 (D) × 283 (H) mm | ||||
| Mass | Approx. 800 g (Approx. 1.76 lbs) | ||||
| Display | 320 × 240 LCD with backlight | ||||
| Data memory | 10,000 datasets | ||||
| Communication | USB | ||||
| Battery | C batteries × 4 | ||||
| Water resistance | JIS protection level 7 (when sensor cable is fitted) | ||||
| Battery life | Approx. 70 hours (without backlight) | ||||
| Operating temperature | -5 to 45°C | ||||
| Measurement Parameters | |||||
| pH | Range: 0 to 14 | Resolution: 0.01 pH | Accuracy: ±0.1 pH | ||||
| ORP | Range: -2000 to +2000 mV | Resolution: 1 mV | ||||
| Dissolved Oxygen (DO) | Range: 0 to 50.0 mg/L | Resolution: 0.01 mg/L | ||||
| Conductivity | Range: 0.000 to 10 S/m | Accuracy: ±1% F.S. | ||||
| Salinity | Range: 0 to 70 PPT | ||||
| Total Dissolved Solids (TDS) | Range: 0 to 100 g/L | ||||
| Seawater Specific Gravity | Range: 0 to 50 σt | ||||
| Temperature | Range: -10 to 55°C | Resolution: 0.01°C | ||||
| Turbidity | Range: 0 to 1000 NTU (model dependent) | ||||
| Water Depth | Range: 0 to 30 m | ||||
| GPS | — | — | ● | — | ● |
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