U-50 Multiparameter Water Quality Meter

Overview

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.

U-50 Series product literature

U-50 Instruction Manual

U-50 Series Literature

U-50 Flow Cell Instruction Manual

U-50 PC Instruction Manual

Features

  • 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.

Manufactured by HORIBA

Specifications

U-50 series Feature comparison

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 (Tangsten lamp)

   —

    —

    —

    ○

    ○

Water depth

   —

    —

    ○

    ○

    ○

ORP (Oxidation Reduction Potential)

    ○

    ○

    ○

    ○

    ○

GPS

   —

    —

    ○

    —

    ○

pH (mV)

    ○

    ○

    ○

    ○

    ○

Sensor Probe 

U-51

U-52

U-52G

U-53

U-53G

Max.items displaying simultaneously

  9

10

11

10

11

Measurement temperature

-10 to -55°C

Max. sensor diameter

Approx. 96 mm

Probe length

Approx. 340 mm

Cable length

2m, 10m, 30m

Mass

Approx. 1800 g

Automatic calibration (use HORIBA 100-4)

Applying to all models

Turbidity wiper

Measurement depth

Max. 30 m

Material contact with liquid

PPS, glass, SUS316L, SUS304, FKM, PEEK, Titaniumu, FEP membrane, POM

Water resistance

JIS protection level 8

  Control Unit

U-51

U-52

U-52G

U-53

U-53G

Outer dimensions

115(W) X 65(D) X 280(H) mm

Mass

Approx. 800 g (Without Batteries)

LCD

320 X 240 Graphic liquid crystal with backlight (black and white)

Data memory

10000 Data Sets

Communication

USB peripheral

Battery

C batteries x 4 ; CR2032 x 1

Water resistance

JIS protection level 7 (when sensor cable is connected)

Battery life

U-51, U-52, U-52G: Approx. 70 hours (without backlight)

U-53, U-53G: Approx. 500 measurements

Storage temperature

-10 to 60°C

Ambient temperature

-5 to 45°C

pH (Avaliable In All Models)

  • Two point calibration
  • Automatic temperature compensation

Measurement principle

Glass electrode method

Range

pH 0 to 14

Resolution

0.01pH

Repeatability

±0.05pH

Accuracy

±0.1pH

 Dissolved Oxygen (Available in All Models)

  • Salinity conversion (0 to 70 PPT / automatic)
  • Automatic temperature compensation

Measurement principle

Polarographic method

Range

0 to 50.0 mg/L

Resolution

0.01 mg/L

Repeatability

±0.1 mg/L

Accuracy

0 to 20 mg/L: ±0.2 mg/L, 20 to 50 mg/L: ±0.5 mg/L

Conductivity (Avaliable in All Models)

  • Auto range
  • Automatic temperature conversion (25°C)

Measurement principle

4 AC electrode method

Range

0 to 10 S/m (0 to 100 mS/cm)

Resolution

0.000 to 0.999 mS/cm: 0.001
1.00 to 9.99 mD/cm: 0.01
10.0 to 99.9 mS/cm: 0.1
0.0 to 99.9 mS/m: 0.1
0.100 to 0.999 S/m: 0.001
1.00 to 9.99 S/m: 0.01

Repeatability

±0.05% F.S.

Accuracy

±1% F.S. (Median of two-point calibration)

Salinity (Avaliable in All Models

Measurement principle

Conductivity conversion

Range

0 to 70 PPT (permillage)

Resolution

0.1 PPT

Repeatability

±1 PPT

Accuracy

±3 PPT

Total Dissolved Solid (TDS)

  • Conversion factor setting

Specification attribute

Specification value

Measurement principle

Conductivity conversion

Range

0 to 100 g/L

Resolution

F.S. 0.1%

Repeatability

±2 g/L

Accuracy

±5 g/L

Seawater specific gravity (Available in All Models)

  • Display δ1, δ0, δ15

Measurement principle

Conductivity conversion

Range

0 to 50 δt

Resolution

0.1 δt

Repeatability

±2 δt

Accuracy

±5 δt

Temperature (Available in All Models)

Measurement principle

Thermistor method

Range

-10 to -55°C

Resolution

0.01°C

Repeatability

±0.10°C (at calibration point)

Accuracy

JIS class B platinum thermometer sensor (±0.3 + 0.005 / 1°C)

Turbidity (TURB)

U-52

U-52G

U-53

U-53G

Measurement principle

LED transmitting light source, 30° forward scattering method

Tungsten lamp transmitting source and 90° scattering method

Range

0 to 800 NTU

0 to 1000 NTU

Resolution

0.1 NTU

0.01 NTU

Repeatability

±5% (reading) or ±0.5 NTU whichever is greater

±3% (reading) or ±0.1 NTU whichever is greater

Accuracy

±5% (reading) or ±1 NTU whichever is greater

0 to 10 NTU: ±0.5 NTU
10 to 1000 NTU: 3% (reading) or ±1 NTU whichever is greater

Water depth

U-52G

U-53

U-53G

Measurement principle

Pressure method      

Range

0 to 30 m       

Resolution

0.5 m      

Repeatability

±1% F.S.       

Accuracy

±0.3 m

Oxidation Reduction Potential (ORP) (Available in All Models)

Measurement principle

Platinum electrode method

Range

-2000 mV to +2000 mV

Resolution

1 mV

Repeatability

±5 mV

Accuracy

±15 mV

GPS 12 channel parallel (This is availalble for U-52G and U-53G.)