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Measurement method:
+ pH: Glass electrode method
+ Electric conductivity (EC): AC 4-electrode method
+ Salt: Conversion from electrical conductivity
+ Total dissolved solids (TDS): Conversion from electrical conductivity
+ Sea water specific gravity (σt): Conversion from electrical conductivity
+ Temperature (TEMP): Platinum resistor
+ Turbidity (TURB): 90-degree scattered light method
+ Dissolved Oxygen (DO) (Optional): Membrane galvanic cell method
+ ORP (Optional): Platinum electrode method
+ Ion (Optional) (6 types：F-, Cl-, NO3-, Ca2+, K+, NH4+): ion electrode method
+ Water depth (DEPT) (Factory option): Diaphragm pressure sensor method
Display: LCD digital display
Measurement range:
+ pH: pH0.00 to pH14.00
+ Electric conductivity (EC): 0.00 to 10.00S/m
Display range: 0.0 to 202.0mS/m, 0.000 to 2.020S/m, 0.00 to 20.20S/m (manual / automatic / switch range)
+ Salt: 0.00 to 4.00％ (NaCl)
0.00 to 40.00psu (PSS)
+ Total dissolved solids (TDS): 0.0 to 999.9g/L
+ Seawater specific gravity (σt): 0.0 to 50.0σt
+ Temperature (TEMP): -5.00 to 55.00℃
+ Turbidity (TURB): 0.0 to 80.0NTU（mg/L）
0 to 800NTU（mg/L）
+ Dissolved Oxygen (DO) (Optional): 0.00 to 20.00mg/L
0 to 200％
+ ORP (Optional): -2000 to 2000mV
+ Ion (Optional): 0.00 to 2.00mg/L 0 to 62g/L (6 range) (Depending on electrode used)
+ Water depth (DEPT): 0.0 to 100.0m
Accuracy (main unit):
+ pH: ±0.05 pH
+ ORP: ±5 mV
+ Turbidity: ±-1.6NTU & +/-8NTU
+ Conductivity: ±1 % FS
+ Salinity: ±0.04% (NaCl); 0.40psu (PSS)
+ TDS: ±2g/L
+ DO: ±0.1 mg/L / ±1%
+ Seawater specific gravity: ±0.1σt
+ Water depth: ±0.1 m
+ Temperature: ±0.25
Calibration:
+ Turbidity: Zero/Span correction
+ Conductivity: Can be calibrated
+ Salinity: Calibrated
+ TDS: Can be calibrated
+ DO: Zero/Span correction
+ Specific gravity of seawater: Calibrated
+ Water depth: Calibrated
+ Temperature: Can be calibrated
Waterproof design: IP67 - can be submerged in water
