Multiparameter Water Quality Checker U-50

U-50 Multiparameter Water Quality Checker

Portable multiparameter water quality measurement

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.

 

 

Segment: Process And Environment
Division: Water Pollution
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.

 

 

 Control Unit

 Control Unit Design for Field Operations

 

  • Auto-calibration feature provides hassle free calibration of pH, dissolved oxygen, conductivity, turbidity and depth.
  • Shock resistant cover designed for rough treatment in the field and is easily cleaned.
  • Cable can be easily connected and disconnected with quick-connect fitting.

 

 Data Management

 

  • Auto hold function freezes average data values on the screen to offer more time to verify or transcribe data.
  • Diagnostic functions notify the user of errors.
  • Integral USB connection for data transfer to a PC. USA cable is sold separately and includes software.
  • Selectable measurement units allow the operator to report data without the need to convert data to desired units of measure.

 

 Sensor Probe Unit

 Multiple Sensors Housed in Each Probe

 

  • Multiple sensors allow for the measurement of 11 parameters 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 filed replaceable turbidity 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

 

 

U-50 series Feature comparison

 U-51U-52U-52GU-53U-53GU-54U-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-54U-54G
Max.items displaying simultaneously  10 11 11 11 11 11 11
Measurement temperature-10 to 55°C  
Max. sensor diameterApprox. 96mm  
Probe lengthApprox. 340mm  
Cable length

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

  
MassApprox. 1800g
(Approx. 3.97 Ibs)
  
Automatic calibration
(use pH4)
Applying to all models  
Turbidity wiper – – – ○ ○ – –
Measurement depthMax. 30 m  
Material contact with liquidPPS, glass, SUS316L, SUS304, FKM, PEEK, Q,Titaniumu,
FEP membrane, POM
  
Water resistanceJIS protection livel 8  

 Monitor

 U-51U-52U-52GU-53U-53GU-
54
U-
54G
Outer dimensions115(W) X 66(D) X 283(H) mm  
MassApprox. 800 g
(Approx. 1.76 Ibs)
  
LCD320 X 240 liquid crystal display with backlight (black and white)  
Data memory10,000  
CommunicationUSB  
BatteryC batteries X 4  
Water resistanceJIS 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 attributeSpecification value
Measurement principleGlass electrode method
RangepH 0 to 14
Resolution0.01pH
Repeatability±0.05pH
Accuracy±0.1pH

Oxidation Reduction Potential (ORP)

Specification attributeSpecification value
Measurement principlePlatinum electrode method
Range-2000 mV to +2000 mV
Resolution1 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 attributeSpecification value
Measurement principlePolarographic method
Range0 to 50.0 mg/L
Resolution0.01 mg/L
Repeatability±0.1 mg/L
Accuracy0 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 attributeSpecification value
Measurement principle4 AC electrode method
Range0 to 10 S/m (0 to 100 mS/cm)
Resolution0.000 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 attributeSpecification value
Measurement principleConductivity conversion
Range0 to 70 PPT (permillage)
Resolution0.1 PPt
Repeatability±1 PPT
Accuracy±3 PPT

Total Dissolved Solid (TDS)

  • Conversion factor setting
Specification attributeSpecification value
Measurement principleConductivity conversion
Range0 to 100 g/L
Resolution0.1% F.S.
Repeatability±2 g/L
Accuracy±5 g/L

Seawater specific gravity

  • Display δ1, δ0, δ15
Specification attributeSpecification value
Measurement principleConductivity conversion
Range0 to 50 δt
Resolution0.1 δt
Repeatability±2 δt
Accuracy±5 δt

Temperature

Specification attributeSpecification value
Measurement principleThermistor method
Range-10 to 55°C
Resolution0.01°C
Repeatability*±0.10°C (at calibration point)
AccuracyJIS class B platinum thermometer sensor (±0.3+0.005 |t|)

Turbidity (TURB)

 U-51U-52U-52GU-53U-53GU-
54
U-
54G
Measurement principleLED
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

Range0 to 800 NTU0 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

Resolution0 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-  51U-52U-52GU-53U-53GU-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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