U-50 Series Multiparameter Water Quality Meter

pH

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Dissolved Oxygen

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Conductivity

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Salinity

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TDS(Total Dissolved Solid)

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Seawater specific gravity

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Temperature

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Turbidity (LED)

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Turbidity (Tangsten lamp)

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Water depth

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ORP (Oxidation Reduction Potential)

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GPS

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pH (mV)

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Max.items displaying simultaneously

  9

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

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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

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

Measurement principle

Glass electrode method

Range

pH 0 to 14

Resolution

0.01pH

Repeatability

±0.05pH

Accuracy

±0.1pH

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

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)

Measurement principle

Conductivity conversion

Range

0 to 70 PPT (permillage)

Resolution

0.1 PPT

Repeatability

±1 PPT

Accuracy

±3 PPT

Measurement principle

Conductivity conversion

Range

0 to 100 g/L

Resolution

F.S. 0.1%

Repeatability

±2 g/L

Accuracy

±5 g/L

Measurement principle

Conductivity conversion

Range

0 to 50 δt

Resolution

0.1 δt

Repeatability

±2 δt

Accuracy

±5 δt

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)

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

Measurement principle

Pressure method      

Range

Resolution

0.5 m      

Repeatability

±1% F.S.       

Accuracy

±0.3 m

Measurement principle

Platinum electrode method

Range

-2000 mV to +2000 mV

Resolution

1 mV

Repeatability

±5 mV

Accuracy

±15 mV