The HI3512 is a professional, accurate multiparameter benchtop meter. Offering two input channels, this meter is able to measure up to eight parameters including pH, ORP, ISE, EC, TDS, resistivity, salinity, and temperature. The meter comes with Hanna’s HI1131B glass pH electrode, HI76310 four-ring conductivity probe, and a temperature probe to allow for automatic temperature compensation. The HI3512 offers many features including CAL Check^™, five-point pH and ISE calibration, autoranging EC, TDS, and resistivity measurements, data logging, comprehensive GLP data, and PC connectivity via USB to provide users with a simple way to organize and manage their data.

Includes:

• (1) HI76310 EC/TDS probe
• (1) HI1131B pH electrode
• (1) HI7662-T temperature probe
• (1) HI70004 pH 4.01 buffer solution sachet(
• (1) HI70007 pH 7.01 buffer solution sachet
• (2) HI700601 electrode cleaning solution sachet
• (1) HI7082 3.5M KCl electrolyte solution (30 mL)
• (1) HI76404N electrode holder
• (1) 12 VDC adapter and instructions.

Specifications:

• pH Range     -2.0 to 20.0 pH, -2.00 to 20.00 pH, -2.000 to 20.000 pH
• pH Resolution     0.1, 0.01, 0.001 pH
• pH Accuracy (@25ºC/77ºF)     ±0.01 pH, ±0.002 pH
• pH Calibration     up to five point calibration, seven standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45), and two custom buffers
• pH Temperature Compensation     automatic or manual from -20.0 to 120.0 °C
• mV Range     ±2000 mV
• mV Resolution     0.1 mV
• mV Accuracy     ±0.2 mV
• Relative mV Offset Range     ±2000 mV

EC Specifications

• EC Range     0 μS/cm to 400 mS/cm (shows values up to 1000 mS/cm absolute conductivity), 0.001 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, 1000 mS/cm (autoranging)
• 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, 1 mS/cm
• EC Accuracy (@25ºC/77ºF)     ±1% of reading (±0.01 μS/cm or 1 digit whichever is greater) excluding probe error
• EC Calibration     automatic up to two points with seven Hanna standards (0.00 µS/cm, 84.0 µS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm)
• EC Temperature Compensation     NoTC, MTC, ATC

TDS Specifications

• TDS Range     0.000 to 9.999 ppm, 10.00 to 99.99 ppm, 100.0 to 999.9 ppm, 1.000 to 9.999 g/L, 10.00 to 99.99 g/L, 100.0 to 400.0 g/L (autoranging)
• TDS Resolution     0.001 ppm, 0.01 ppm, 0.1 ppm, 1 ppm, 0.01 g/L, 0.1 g/L, 0.001 g/L
• TDS Accuracy (@25ºC/77ºF)     ±1% of reading (±0.05 ppm or 1 digit whichever greater) excluding probe error
• TDS Factor     0.40 to 1.00
• Resistivity Specifications
• Resistivity Range     1.0 to 99.9 Ω•cm; 100 to 999 KΩ•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 (autoranging)
• Resistivity 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
• Resistivity Accuracy     ±1% of reading (±10 Ω or 1 digit whichever greater) excluding probe error

Salinity Specifications

• Salinity Range     0.0 to 400.0% NaCl
• Salinity Resolution     0.1% NaCl
• Salinity Accuracy (@25ºC/77ºF)     ±1% of reading (excluding probe error)
• Salinity Calibration     one point, with HI7037 calibration solution (optional)

ISE Specifications

• ISE Range     1.00 E-7 to 9.99 E10 concentration (user selectable units)
• ISE Resolution     3 digits
• ISE Accuracy @ 25 °C/77 °F     ±0.5% (monovalent ions); ±1% (divalent ions)
• ISE Calibration Points     up to five-point calibration points six standard solutions available (0.1, 1, 10, 100, 1000, 10000 ppm)

Additional Specifications

• Cell Constant     0.010 to 10.000
• pH Electrode     HI1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included)
• EC Probe     HI76310 platinum four-ring EC/TDS probe and 1 m (3.3’) cable (included)
• Temperature Probe     HI7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)
• Slope Calibration     from 80 to 110%
• Temperature Source     automatic from sensor inside the probe; manual entry
• Logging     400 samples, log-on-demand
• Logging Interval     5, 10, 30 seconds; 1, 2, 5, 10, 15, 30, 60, 120, 180 minutes, AutoEnd (max 600 samples)
• Connectivity     opto-isolated USB
• Environment     0 to 50°C (32 to 122°F), RH max 55% non-condensing
• Input Impedance     10¹² Ohms
• Power Supply     12 VDC adapter (included)
• Dimensions     235 x 207 x 110 mm (9.2 x 8.14 x 4.33”)
• Weight     1.8 kg (4 lbs)