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pH Measurement
pH range:
-2.0 to 20.0 pH
-2.00 to 20.00 pH
-2.000 to 20.000 pH
pH resolution:
0.1 pH
0.01 pH
0.001 pH
pH accuracy:
±0.1 pH
±0.01 pH
±0.002 pH (±1 LSD)
ORP Measurement
ORP range: ±2000 mV
ORP resolution:
1 mV
0.1 mV
ORP accuracy: ±0.2 mV ±1 LSD
Relative mV offset: ±2000 mV
Temperature Measurement
Temperature range:
-20.0 to 120.0 °C
-4.0 to 248.0 °F
253.0 to 393.0 K
Temperature resolution: 0.1 °C / 0.1 °F / 0.1 K
Temperature accuracy: ±0.2 °C / ±0.4 °F / ±0.2 K
ISE Measurement
Range: 1 × 10⁻⁶ to 9.99 × 10¹⁰ concentration
Resolution: 1; 0.1; 0.01; 0.001
Accuracy: ±0.5% (monovalent ions); ±1% (divalent ions)
Calibration: Automatic, up to 5-point calibration using 7 standard solutions and 5 custom solutions
Conductivity (EC)
EC range:
0.000 to 9.999 µS/cm
10.00 to 99.99 µS/cm
100.0 to 999.9 µS/cm
1.000 to 9.999 mS/cm
10.00 to 99.99 mS/cm
100.0 to 1000.0 mS/cm
EC resolution: 0.001 µS/cm; 0.01 µS/cm; 0.1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm
EC accuracy: ±1% of reading (±0.01 µS/cm)
EC calibration:
Mode: Automatic standard recognition / User standard, single-point or multi-point calibration
Standard points: 84.00 µS/cm, 1.413 mS/cm, 5.000 mS/cm, 12.88 mS/cm, 80.00 mS/cm, 111.8 mS/cm
Calibration reminder: Off, Daily (0 min to 23 h 59 min), Time-based (1 min to 500 days 23 h 59 min)
Total Dissolved Solids (TDS)
TDS range:
0.00 to 9.999 ppm (mg/L)
10.00 to 99.99 ppm (mg/L)
100.0 to 999.9 ppm (mg/L)
1.000 to 9.999 ppt (g/L)
10.00 to 99.99 ppt (g/L)
100.0 to 400.0 ppt (g/L)
Actual TDS (1.00 conversion factor)
TDS resolution: 0.001 ppm, 0.01 ppm, 0.1 ppm, 1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt
TDS accuracy: ±1% of reading (±0.01 ppm)
TDS calibration: Based on conductivity calibration
Resistivity
Range:
1.0 to 99.9 Ω·cm
100 to 999 Ω·cm
1.00 to 9.99 KΩ·cm
10.0 to 99.9 KΩ·cm
100 to 999 KΩ·cm
1.00 to 9.99 MΩ·cm
10.0 to 100.0 MΩ·cm
Resolution: 0.1 Ω·cm; 1 Ω·cm; 0.01 KΩ·cm; 0.1 KΩ·cm; 1 KΩ·cm; 0.01 MΩ·cm; 0.1 MΩ·cm
Accuracy: ±1% of reading (±1 Ω·cm)
Calibration: Based on conductivity calibration
Salinity – NaCl
Range:
0.00 to 42.00 PSU (Practical Scale)
0.00 to 80.00 ppt (g/L) – Natural Sea Water
0.0 to 400.0% – Percent Scale
Resolution:
0.01 for Practical Scale / Natural Sea Water
0.1% for Percent Scale
Accuracy: ±1% of reading
Dissolved Oxygen (DO)
DO range:
0.00 to 90.00 mg/L (ppm)
0.0 to 600.0% saturation
Note: Measurement range depends on probe limitations
DO resolution: 0.01 mg/L (ppm); 0.1% saturation
DO accuracy: Depends on probe used
(HI7641133 optical DO probe or HI764833 polarographic membrane DO probe)
Barometric Pressure
Range:
450 to 850 mmHg
600 to 1133.2 mBar
60 to 113.32 kPa
17.72 to 33.46 inHg
8.702 to 16.436 psi
0.5921 to 1.1184 atm
Resolution: 0.1 mmHg / 0.1 mBar / 0.01 kPa / 0.001 inHg / 0.001 psi / 0.0001 atm
Accuracy:
±3 mmHg ±15% of value at calibration point
±3 mmHg ±1 LSD
Pressure compensation: Automatic or manual
Other Specifications
Result modes:
Direct; Direct/AutoHold; Module
Stability modes: Accurate, Medium, Fast
Data Logging
Type: Automatic, manual, AutoHold
Records: Up to 50,000 records per file; at least 1,000,000 data points per user
Auto logging intervals: 1, 2, 5, 10, 30 s; 1, 2, 5, 10, 15, 30, 60, 120, 150, 180 min
Sample ID: Automatic or manual
File format: .csv
Connectivity
USB-A: 2 ports for keyboard and/or printer or USB drive
USB-C: 1 port for PC connection and USB-C drive
Wi-Fi & Ethernet: Data transfer and download (web server, email, FTP)
RS232: Peripheral device connection
Calibration reminders
Daily: 0 min to 23 h 59 min
Periodic: 1 min to 30 days, 23 h 59 min
Off
Users: Up to 9 users + 1 default admin account
Power supply: DC adapter 100–240 VAC ~ 24 VDC 2A
Dimensions: 205 × 160 × 77 mm (8.0 × 6.2 × 3.0”)
Weight: Approximately 1.2 kg
