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 Environmental

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-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- 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-53	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-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).

3.76 MB

Water Treatment: U-50 series Multi-parameter Water Quality Meters Brochure (version A)