HORIBA U51 Multiparameter Water Quality Checker | EMIN.MY

HORIBA U51 Multiparameter Water Quality Checker

Name: HORIBA U51 Multiparameter Water Quality Checker
Brand: HORIBA

ManufacturerHORIBA(View more products from this manufacturer)

ModelU51

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pH: 0-14
Dissolved Oxygen: 0 to50mg/L
Conductivity: 0 to10 S/m
Salinity: 0 tới 70 PPT
TDS(Total Dissolved Solid): 0 to 100g/L
Seawater specific gravity: 0 to 50σt
Temperature: -5 to 55oC

ORP (Oxidation Reduction Potential): -2000mV to + 2000mV

U-50 Multi-parameter Water Qualty Meters

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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) dont 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).