U-50 Series 다항목 수질 측정기

U-50 series Feature comparison

	U-51	U-52	U-52G	U-53	U-53G
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	—	—	○	—

Sensor Probe

	U-51	U-52	U-52G	U-53	U-53G
Max.items displaying simultaneously	10	11	11	11	11
Measurement temperature	-5 to 55°C
Max. sensor diameter	Approx. 96 mm
Probe length	Approx. 340 mm
Cable length	Standard: 2 m, Option: 10, 30 m
Mass	Approx. 1800 g
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, Titaniumu, FEP membrane, POM
Water resistance	JIS protection livel 8

Monitor

	U-51	U-52	U-52G	U-53	U-53G
Outer dimensions	115(W) X 65(D) X 280(H) mm
Mass	Approx. 800 g
LCD	320 X 240 Graphic liquid crystal with backlight (black and white)
Data memory	10000
Communication	USB peripheral
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
Storage temperature	-10 to 60°C
Ambient temperature	-5 to 45°C

pH(All models in common)

Dissolved Oxygen (DO, All models in common)

Conductivity (COND, All models in common)

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 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)

Salinity

Total Dissolved Solid (TDS)

Seawater specific gravity

Temperature

Specification attribute	Specification value
Measurement principle	Thermistor method
Range	-5 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)

Turbidity (TURB)

	U-51	U-52
Measurement principle	30°LED forward penetration and scattering method	90°Tungsten lamp penetration and 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: ±5 NTU 10 to 1000 NTU: 3% (reading) or ±1 NTU whichever is greater

Water depth

	U-51	U-52	U-52G
Measurement principle	–	–	Pressure method
Range	–	–	0 to 30 m
Resolution	–	–	0.5 m
Repeatability	–	–	±1% F.S.
Accuracy	–	–	±0.3 m

Oxidation Reduction Potential (ORP)

GPS 12 channel parallel (This is availalble for U-52G.)

U-50 Series