U-50 Multiparameter Water Quality Checker

Overview

U-50 series Multi-parameter water quality checker enables to measure and indicate the monitoring result simultaneously up to 11 parameters with one unit. Tough & powerful design, considering user friendly field monitoring on site, such as rive, ground water, drainage water, etc. bring together feature of  function and performance, which makes simple operation for everybody.

U-50 Series product literature

Features

  • 5 languages display (English,  Japanese, Russian,  Spanish, Portuguese)
  • Multiple sensors allow for the measurement of 11 paramenters simultaneously.
    (pH, pH (mV), ORP, DO, COND, Salinity, TDS, Seawater, Specific Gravity, Temperature, Turbidity, Water depth)
  • Turbidity sensor U-53 conforms to US EPA method 180.1 Precision has been improved over conventional instruments. The Model U-53 high precision field replaceable sensor with wiper has a resolution of 0.01 NTU.
  • Turbidity sensor of U-54 conforms to EN ISO 7027. The model U-54 has a resolution of 0.01 NTU.
  • Improved stability of the dissolved oxygen sensor has been achieved with a new 3 electrode design for fast response and polarographic sensor for ease of maintenance.
  • pH and ORP electrodes can be replaced individually to reduce replacement costs.

Manufactured by HORIBA

Specifications

U-50 series Feature comparison

U-51

U-52

U-52G

U-53

U-53G

U-54

U-54G

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

   —

   —

    ○

   —

    ○

  —

  ○

 Note: *U-54/G(2m) don't have the feature of water depth.

Sensor Probe 

U-
51

U-
52

U-
52G

U-
53

U-
53G

U-54

U-54G

Max.items displaying simultaneously

  10

 11

 11

 11

 11

 11

 11

Measurement temperature

-10 to 55°C

Max. sensor diameter

Approx. 96mm

Probe length

Approx. 340mm

Cable length

Standard: 2m, Option: 10m,30 m

Mass

Approx. 1800g
(Approx. 3.97 Ibs)

Automatic calibration
(use pH4)

Applying to all models

Turbidity wiper

 –

 –

 –

 ○

 ○

 –

 –

Measurement depth

Max. 30 m

Material contact with liquid

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

Water resistance

JIS protection livel 8

 Monitor

U-51

U-52

U-52G

U-53

U-53G

U-
54

U-
54G

Outer dimensions

115(W) X 66(D) X 283(H) mm

Mass

Approx. 800 g
(Approx. 1.76 Ibs)

LCD

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

Data memory

10,000

Communication

USB

Battery

C batteries X 4

Water resistance

JIS protection level 7 (when sensor cable is fitted)

Battery life

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

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

Approx. 70 hours (without backlight)

Approx. 70 hours (without backlight)

Storage temperature

-10 to 60°C

Ambient temperature

-5 to 45°C

pH(All models in common)

  • Two-point calibration
  • Automatic temperature

Specification attribute

Specification value

Measurement principle

Glass electrode method

Range

pH 0 to 14

Resolution

0.01pH

Repeatability

±0.05pH

Accuracy

±0.1pH

Oxidation Reduction Potential (ORP)

Specification attribute

Specification value

Measurement principle

Platinum electrode method

Range

-2000 mV to +2000 mV

Resolution

1 mV

Repeatability

±5 mV

Accuracy

±15 mV

 Dissolved Oxygen (DO, All models in common)

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

Specification attribute

Specification value

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 (COND, All models in common)

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

Specification attribute

Specification value

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 mS/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

 

Specification attribute

Specification value

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

0.1% F.S.

Repeatability

±2 g/L

Accuracy

±5 g/L

Seawater specific gravity

  • Display δ1, δ0, δ15

Specification attribute

Specification value

Measurement principle

Conductivity conversion

Range

0 to 50 δt

Resolution

0.1 δt

Repeatability

±2 δt

Accuracy

±5 δt

Temperature

Specification attribute

Specification value

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 |t|)

Turbidity (TURB)

U-51

U-52

U-52G

U-53

U-53G

U-
54

U-
54G

Measurement principle

LED
light
source
and
30°scattering
method

Tungsten lamp
source
and
90°scattering
method

LED
light
source
and
90°scattering
method

LED
light
source
and
90°scattering
method

Range

0 to 800 NTU

0 to 1000 NTU

0 to 1000 NTU
0 to 0.99: 0.01 NTU
1 to 99.9:
0.1 NTU

0 to 1000 NTU
0 to 0.99: 0.01 NTU
1 to 99.9:
0.1 NTU

Resolution

0 to 99.9 NTU: 0.1,
100 to 800 NTU: 1

0 to 9.99 NTU: 0.01,
10 to 99.9 NTU: 0.1, 
100 to     1000 NTU: 1,

0 to 0.99 NTU: 0.01,
1 to 99.9 NTU: 0.1,
100 to 1000 NTU: 1

0 to 0.99 NTU: 0.01,
1 to 99.9 NTU: 0.1,
100 to 1000 NTU: 1

Repeatability

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

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

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

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

Accuracy

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

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

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

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

Water depth

 

U-  51

U-52

U-52G

U-53

U-53G

U-54            

U-54G    

Measurement principle

   –

   –

Pressure method      

Pressure method,
only 10m and 30m product

Pressure method, only 10m and 30m product

Range

   –

   –

0 to 30 m       

Resolution

   –

   –

0.05 m      

Repeatability

   –

   –

±1% F.S. 

Accuracy

   –

   –

±0.3 m

GPS

12 channel parallel (This is availalble for U-52G, U-53G and U-54G.)

Note:
*Battery life based on continuous operation using alkaline C dry batteries when the monitor temperature is over 20℃ and the backlight OFF.
*Accuracy is measured by calibrating 4 points for turbidity and electrical conductivity and 2 points for all other measurements against standard solution.
*Repeatability is measured by the ability to reproduce the results against the standard solution (at 25℃ normal pressure condition).

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