The HI2300 is a benchtop meter that automatically ranges EC, TDS, Salinity, and temperature measurements. It features a four-ring potentiometric conductivity probe with platinum sensors that offers versatility in measuring low or high conductivity levels without needing to switch probes. Temperature compensation is available in three options, and the temperature coefficient (β) and TDS factor are adjustable. Additionally, the meter has GLP capabilities and can connect to a PC via USB, allowing for easy data organization and management. The HI2300 also includes an adjustable cell constant for more precise measurements.

Specifications:

Measurement Ranges:
EC Range: 0.00 to 29.99 μS/cm, 30.0 to 299.9 μS/cm, 300 to 2999 μS/cm, 3.00 to 29.99 mS/cm, 30.0 to 200.0 mS/cm, up to 500.0 mS/cm (absolute EC)
TDS Range: 0.00 to 14.99 ppm (mg/L), 15.0 to 149.9 ppm (mg/L), 150 to 1499 ppm (mg/L), 1.50 to 14.99 g/L, 15.0 to 100.0 g/L, up to 400.0 g/L (absolute TDS), with 0.80 conversion factor
Salinity (% NaCl) Range: 0.0 to 400.0% NaCl

Resolution:

EC Resolution: 0.01 μS/cm, 0.1 μS/cm, 1 μS/cm, 0.01 mS/cm, 0.1 mS/cm
TDS Resolution: 0.01 ppm, 0.1 ppm, 1 ppm, 0.01 g/L, 0.1 g/L
Salinity (% NaCl) Resolution: 0.1% NaCl

Accuracy:
EC Accuracy: ±1% of reading (±0.05 μS/cm or 1 digit, whichever is greater)
TDS Accuracy: ±1% of reading (±0.03 ppm or 1 digit, whichever is greater)
Salinity (% NaCl) Accuracy: ±1% of reading

Calibration:
EC Calibration: automatic, one point with six memorized values (84, 1413, 5000, 12880, 80000, 111800 μS/cm)
Salinity (% NaCl) Calibration: one point, with HI7037 calibration solution (optional)

Temperature:
Temperature Range: -20.0 to 120.0 ºC
Temperature Resolution: 0.1 °C
Temperature Accuracy: ±0.4°C (±0.8°F) (excluding probe error)
Temperature Correction Coefficient: selectable from 0.00 to 6.00%/°C (EC and TDS only)
Probe:EC/TDS Probe: HI76310 platinum, four-ring conductivity/TDS probe with internal temperature sensor and 1 m (3.3’) cable (included)

Logging and Connectivity:
Logging Type: log-on-demand
Logging Memory: 500 sample
Connectivity: opto-isolated USB

Other Specifications:
GLP: yes
Power Supply: 12 VDC adapter (included)
Environment: 0 to 50°C (32 to 122°F), RH max 95% non-condensing
Dimensions: 235 x 222 x 109 mm (9.2 x 8.7 x 4.3”)
Weight: 1.3 kg (2.9 lbs.)