Horiba U50 pH, DO, EC, alinity, TDS, Temp, Turbidity, ORP, GPS and more
 Horiba U50 Series data sheet in pdf
Horiba U-50 Series Instruction Manual pdf
Horibas U-50 series is a line of water quality meters that allows you to measure up to 11 parameters at the same time. It is designed to be both rugged and easy to operate making it a perfect match for field work. Sampling rivers, environmental groundwarwe wells, lakes, runoff and drainage is right up this meters alley. See the chart below to help decide which model fits your needs.
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 |
| Specification attribute |
Specification value |
Measurement principle |
Glass electrode method |
Range |
pH 0 to 14 |
Resolution |
0.01pH |
Repeatability |
±0.05pH |
Accuracy |
±0.1pH |
| Dissolved Oxygen |
- Salinity conversion (0 to 70 PPT / automatic)
- Automatic temperature compensation
|
| Specification attribute |
Specification value |
Measurement principle |
Polarograph 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 |
- 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 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 |
| 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 |
-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 |
U-52G |
U-53 |
U-53G |
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 |
U-53 |
U-53G |
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) |
| Specification attribute |
Specification value |
Measurement principle |
Platinum electrode method |
Range |
-2000 mV to +2000 mV |
Resolution |
1 mV |
Repeatability |
±5 mV |
Accuracy |
±15 mV |
GPS - 12 channel parallel (This is availalble for U-52G.)
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