| pH/mV Range |
0.00 to 14.00
pH ±600.0 mV |
| pH/mV Resolution |
0.01 pH
0.1 mV |
| pH/mV Accuracy* |
±0.05 pH
±3.0 mV |
| pH/mV Calibration |
• One point, using HI9828-20 Quick calibration standard solution
• Up to three points, using pH 4.01, pH 6.86, pH 7.01, pH 9.18, pH 10.01 standard buffers and one custom buffer |
| ORP Range |
±2000.0 mV |
| ORP Resolution |
0.1 mV |
| ORP Accuracy* |
±10.0 mV |
| ORP Calibration |
Automatic at one custom point (relative mV) |
| Dissolved Oxygen (DO) Range |
0.0 to 500.0 % saturation
0.00 to 50.00 ppm (mg/L) |
| Dissolved Oxygen (DO) Resolution |
0.1 % saturation
0.01 ppm (mg/L) |
| Dissolved Oxygen (DO) Accuracy* |
• 0.0 to 300.0 %: ±1.5 % of reading or ±1.0 % whichever is greater,
• 300.0 to 500.0 %: ±3 % of reading,
• 0.00 to 30.00 ppm (mg/L): ±1.5 % of reading or ±0.10 ppm (mg/L) whichever is greater,
• 30.00 ppm (mg/L) to 50 ppm (mg/L): ±3 % of reading, |
| Dissolved Oxygen (DO) Calibration |
• One point, quick calibration in water-saturated air
• One or two points, at 100 % and 0 %
• One point, using a custom solution (% saturation or mg/L) |
| Dissolved Oxygen (DO) Pressure compensation |
Automatic
450 to 850 mmHg |
| Conductivity Range |
0 to 200 mS/cm
0 to 400 mS/cm (absolute) |
| Conductivity Resolution |
• Manual 1 μS/cm
0.001 mS/cm,
0.01 mS/cm, 0.1 mS/cm, 1 mS/cm
• Automatic 1 μS/cm from 0 to 9999 μS/cm
0.01 mS/cm from 10.00 to 99.99 mS/cm
0.1 mS/cm from 100.0 to 400.0 mS/cm
• Automatic (mS/cm) 0.001 mS/cm from 0.000 to 9.999 mS/cm
0.01 mS/cm from 10.00 to 99.99 mS/cm
0.1 mS/cm from 100.0 to 400.0 mS/cm |
| Conductivity Accuracy* |
±1 % of reading or ±1 μS/cm, whichever is greater |
| Conductivity Calibration |
• One point, using HI9828-20 Quick calibration standard solution
• One point, using 84 μS/cm, 1413 μS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm standard solutions or custom point |
| Resistivity Range |
0 to 999999 Ω·cm
0 to 1000.0 kΩ·cm depending on resistivity reading
0 to 1.0000 MΩ·cm |
| Resistivity Resolution |
1 Ω·cm
0.1 kΩ·cm
0.0001 MΩ·cm |
| Resistivity Calibration |
Based on conductivity calibration |
| Total Dissolved Solids (TDS) Range |
0 to 400000 ppm (mg/L)
Maximum value depends on the TDS factor |
| Total Dissolved Solids (TDS) Resolution |
• Manual 1 ppm (mg/L)
0.001 ppt (g/L), 0.01 ppt (g/L), 0.1 ppt (g/L), 1 ppt (g/L)
• Automatic 1 ppm (mg/L) from 0 to 9999 ppm (mg/L)
0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L)
0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L)
0.001 ppt (g/L) from 0.000 to 9.999 ppt (g/L)
0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L)0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L) |
| Total Dissolved Solids (TDS) Accuracy |
±1 % of reading or ±1 ppm (mg/L), whichever is greater |
| Total Dissolved Solids (TDS) Calibration |
Based on conductivity or salinity calibration |
| Salinity Range |
0.00 to 70.00 PSU |
| Salinity Resolution |
0.01 PSU |
| Salinity Accuracy |
±2% of reading or ±0.01 PSU, whichever is greater |
| Salinity Calibration |
One point, using a custom solution |
| Seawater Sigma Range |
0.0 to 50.0 σt, σ0, σ15 |
| Seawater Sigma Resolution |
0.1 σt, σ0, σ15 |
| Seawater Sigma Accuracy |
±1.0 σt, σ0, σ15 |
| Seawater Sigma Calibration |
Based on conductivity or salinity calibration |
| Turbidity Range |
0.0 to 99.9 FNU
100 to 1000 FNU |
| Turbidity Resolution |
0.1 FNU from 0.0 to 99.9 FNU 1 FNU from 100 to 1000 FNU |
| Turbidity Accuracy* |
±0.3 FNU or ±2 % of reading, whichever is greater |
| Turbidity Calibration |
Automatic
Up to three points, using 0 FNU, 20 FNU, 200 FNU, or custom |
| Atmospheric Pressure Range |
450.0 to 850.0 mmHg, 17.72 to 33.46 inHg, 600.0 to 1133.2 mbar
8.702 to 16.436 psi , 0.5921 to 1.1184 atm , 60.00 to 113.32 kPa |
| Atmospheric Pressure Resolution |
0.1 mmHg, 0.01 inHg, 0.1 mbar
0.001 psi , 0.0001 atm, 0.01 kPa |
| Atmospheric Pressure Accuracy |
±3.0 mmHg within ±15 °C from calibration temperature |
| Atmospheric Pressure Calibration |
Automatic at one custom point |
| ISE Ammonium-Nitrogen Range |
0.02 to 200.0 ppm Am (as NH4+-N) |
| ISE Ammonium-Nitrogen Resolution |
0.01 ppm to 1.00 ppm
0.1 ppm to 200.0 ppm |
| ISE Ammonium-Nitrogen Accuracy |
±5 % of reading or 2 ppm, whichever is greater |
| ISE Ammonium-Nitrogen Calibration |
1 or 2 point
10 ppm and 100 ppm |
| ISE Chloride Range |
0.60 to 200.0 ppm Cl(as Cl–) |
| ISE Chloride Resolution |
0.01 ppm to 1 ppm
0.1 ppm to 200.0 ppm |
| ISE Chloride Accuracy |
±5 % of reading or 2 ppm, whichever is greater |
| ISE Chloride Calibration |
1 or 2 point
10 ppm and 100 ppm |
| ISE Nitrate- Nitrogen Range |
0.62 to 200.0 ppm N(as NO3–-N) |
| ISE Nitrate-Nitrogen Resolution |
0.01 ppm to 1 ppm
0.1 ppm to 200 ppm |
| ISE Nitrate-Nitrogen Accuracy |
±5 % of reading or 2 ppm, whichever is greater |
| ISE Nitrate-Nitrogen Calibration |
1 or 2 point
10 ppm and 100 ppm |
| Temperature Range |
−5.00 to 55.00 °C
23.00 to 131.00 °F
268.15 to 328.15 K |
| Temperature Resolution |
0.01 °C
0.01 °F
0.01 K |
| Temperature Accuracy |
±0.15 °C
±0.27 °F
±0.15 K |
| Temperature Calibration |
Automatic at one custom point |
| Temperature compensation |
Automatic: −5 to 55°C
23 to 131 °F
268.15 to 328.15 K |
| Logging memory |
• Interval logging : 50000 total records (meter and probe)
• Log-on-demand (all parameters) : 15000 total records (meter and probe) |
| Logging interval |
1 second to 3 hours |
| USB-C (host) functions |
Mass-storage host |
| USB-C (device) functions |
Mass-storage device |
| Protection rating |
IP67 |
| Environment |
0 to 50 °C (32 to 122 °F) R
H 100 % |
| Battery type |
4×1.5 V AA alkaline batteries |
| GPS |
12 channel receiver
10 m (30 ft) range |
| Dimensions |
185×93×35.2 mm (7.3×3.6×1.4 inches) |
| Weight (with batteries) |
435 g (13.3 oz) |
| Notes |
*Accuracy is evaluated with a calibrated system at ambient temperature. |