Horiba U-50 Series Water Quality Meter
Horiba U-50 Series Water Quality Meter Probe

Horiba U-50 Series Water Quality Meter

  • Options to measure pH, Dissolved Oxygen (DO), Conductivity, Salinity, Total Dissolved Solids (TDS), Seaweater Specific Gravity, Temperature, Turbidity, Water Depth, and Oxidation Reduction Potential (ORP).
  • Model with GPS available
  • Optional Flow-Cell available for low-flow sampling
  • View all readings on one screen

Discontinued

We no longer offer this product.

If available, alternative products will be listed below.

The U-50 Series multi-parameter water quality meters are equipped to measure and log data for as many as 11 parameters simultaneously with one single probe. Experience the durability, reliability and intuitive software that will exceed your expectations. Monitor surface water and ground water by deploying the probe directly into a body of water or using a flow cell.

Model Comparison
Parameter U-51 U-52 U-52G U-53 U-53G
pH
Dissolved Oxygen
Conductivity
Salinity
TDS(Total Dissolved Solid)
Seawater specific gravity
Temperature
Turbidity (LED)      
Turbidity (Tungsten lamp)      
Water depth    
ORP (Oxidation Reduction Potential)
GPS      
pH (mV)

EPA method 180.1 turbidity design

For high sensitivity turbidity measurements and wiper system using the Model U-53 and Model U-53G.

Dissolved oxygen polarographic sensor

requires little maintenance and is easy to rebuild

Automatic one point calibration feature

Speeds calibration of pH, DO, conductivity, turbidity and water depth

  • All parameters are displayed on one screen.
  • On screen icons display battery power and GPS, USB and probe connectivity.
  • Backlight display and enlarged font capability.
  • Field replaceable sensors.
  • GPS capability.
  • Store as many as 10000 sets of data.

Measurement at a Drainage Ditch or Wharf

Instantaneously monitor, collect and store data while moving the submersed sensor probe unit

Measurement in Marshes

The control unit's waterproof design allows the user to work without concern of splashing or accidentally dropping the control unit in the water. The backlight display allows the user to take measurements in the dark.

Measuring Ground Water from an intake

With the sensor probe lowered and submersed at an intake, 10,000 data sets can be stored in the control unit and transfered to a PC later.

Measurements in Surface Waters

The long 30 meter cable option allows the user to deploy the sensor probe unit and collect measurement data at various depths. The GPS models facilitate environmental surveys of oceans, lakes and rivers.

Parameter Range Resolution Repeatability Accuracy Measuring Principle
pH pH 0 to 14 0.01 pH ±0.05 pH ±0.1pH Glass electrode method
Dissolved Oxygen 0 to 50.0 mg/L 0.01 mg/L ±0.1 mg/L 0 to 20 mg/L: ±0.2 mg/L, 20 to 50 mg/L: ±0.5 mg/L Polarographic method
Conductivity 0 to 10 S/m (0 to 100 mS/cm) Range Dependant ±0.05% F.S. ±1% F.S. (Median of two-point calibration) 4 AC electrode method
Salinity 0 to 70 PPT (permillage) 0.1 PPT ±1 PPT ±3 PPT Conductivity conversion
Total Dissolved Solids (TDS) 0 to 100 g/L F.S. 0.1% ±2 g/L ±5 g/L Conductivity conversion
Seawater Specific Gravity 0 to 50 δt 0.1 δt ±2 δt ±5 δt Conductivity conversion
Temperature -10 to -55°C 0.01°C ±0.10°C (at calibration point) JIS class B platinum thermometer sensor (±0.3 + 0.005 / 1°C) Thermistor method
Turbidity (U-52, U-52G Only) 0 to 800 NTU 0.1 NTU ±5% (reading) or ±0.5 NTU whichever is greater ±5% (reading) or ±1 NTU whichever is greater LED transmitting light source, 30° forward scattering method
Turbidity (U-53, U-53G Only) 0 to 1000 NTU 0.01 NTU ±3% (reading) or ±0.1 NTU whichever is greater
  • 0 to 10 NTU: ±0.5 NTU
  • 10 to 1000 NTU: 3% (reading) or ±1 NTU whichever is greater
Tungsten lamp transmitting source and 90° scattering method
Water Depth (U-52G, U-53, U-53G Only) 0 to 30 m 0.5 m ±1% F.S. ±0.3 m Pressure method
Oxidation Reduction Potential (ORP) -2000 mV to +2000 mV 1 mV ±5 mV ±15 mV Platinum electrode method
GPS (U-52G and U-53G Only) --- --- --- --- ---