- pH Calibration Check™ and electrode condition
- Up to five point pH and ISE calibration
- Seven standard pH buffers for calibration
- pH calibration with up to two custom buffers
- EC calibration for up to two calibration points
- Seven memorized EC standards for calibration
- Messages on the graphic LCD for an easy and accurate calibration
- Contextual help at the touch of a button
- Multi-language support
- Automatic logging interval up to 600 records
- Log on demand up to 400 samples
- GLP features
- PC interface via USB
The HI 3512 is a 2 channel professional benchtop meter with a graphic LCD, designed to provide accurate laboratory results. Channel 1 features pH/ORP/ISE and temperature measurement capability while channel 2 measures EC/TDS/NaCl/Resistivity
and temperature.
The pH channel offers up to five point pH calibration with seven standard buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) and up to two custom buffers.
HANNA’s exclusive Calibration Check™ diagnostics system ensures accurate pH?readings every time by alerting users of potential problems during the calibration process. The Calibration Check™ system eliminates erroneous readings due to dirty or faulty pH electrodes or contaminated pH buffer solutions. After the guided calibration process, a probe condition indicator is displayed on the LCD informing the user of the overall pH electrode status.
This instrument can measure using ORP electrodes (pH channel input), thanks to its capability to measure mV with a resolution up to 0.1 mV and ISE electrodes on ppm scale (pH channel input). The electrode type and unit selection capability and the ISE calibration in up to five calibration standard solutions make this instrument very useful for a large range of concentration solution measurements.
The EC channel offers up to two calibration points with 7 memorized 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 and 111.8 mS/cm). The EC channel supports autoranging, manual ranging and lock of the user selected range, temperature compensation selection, temperature reference selection (15 °C, 20 °C or 25 °C) and temperature coefficient set.
pH and EC channels also provide user selectable “out of calibration range” warnings and a “calibration timeout” to remind the user when a new calibration is necessary.
Messages on the graphic LCD offer directions for easy and accurate calibration for both channels as well as diagnostics to alert the user when calibration or measurement issues are detected.
Other features of the HI 3512 include log-on-demand of up to 400 samples, automatic logging interval with log on stability feature of up to 600 records, auto HOLD that freezes the first stable reading on the LCD display, GLP to view the last calibration data for pH, rel mV, ISE, EC or NaCl and PC interface via USB.
Spesification :
| pH | Range | -2.0 to 20.0; -2.00 to 20.00; -2.000 to 20.000 pH |
| Resolution | 0.1 pH; 0.01 pH; 0.001 pH | |
| Accuracy | ±0.01 pH; ±0.002 pH | |
| mV | Range | ±2000.0 mV |
| Resolution | 0.1 mV | |
| Accuracy | ±0.2 mV | |
| ISE | Range | 1.00 E-7 to 9.99 E10 conc. |
| Resolution | 3 digits 0.01, 0.1, 1, 10 conc. | |
| Accuracy | ±0.5% of reading (monovalent ions); ±1% of reading (divalent ions) | |
| Temperature Channel 1 | Range | –20.0 to 120.0 ºC (4.0 to 248.0 ºF) |
| Resolution | 0.1 ºC (0.1 ºF) | |
| Accuracy | ±0.2 ºC (±0.4 ºF) (excluding probe error) | |
| Rel. mV Offset Range | ±2000 mV | |
| 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 Calibration Check™ | yes | |
| Slope Calibration | from 80 to 110% | |
| pH Temp. Compensation | manual or automatic from –20.0 to 120.0 ºC (–4.0 to 248.0 ºF) |
|
| pH Electrode | HI 1131B glass body pH electrode with BNC connector and 1 m (3.3') cable (included) | |
| Temperature probe | HI 7662-T temperature probe with 1 m (3.3') cable (included) | |
| ISE Calibration | up to five-point calibration points 6 standard solutions available (0.1, 1, 10, 100, 1000, 10000 ppm) | |
| EC | Range | 0.000 to 400 mS/cm (shows values up to 1000 mS/cm) actual conductivity 1000 mS/cm; 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; 100.0 to 999.9 mS/cm; 1000 mS/cm (autoranging) |
| 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 | |
| Accuracy | ±1% of reading (±0.01 µS/cm or 1 digit whichever is greater) excluding probe error | |
| Resistivity | Range | 01.0 to 199.9 ohms; 100 to 1.999 ohms; 1.00 to 19.99 Kohms; 10.0 to 199.9 Kohms; 100 to 1.999 Kohms; 1.00 to 19.99 Mohms; 10.0 to 100.0 Mohms (autoranging) |
| Resolution | 0.1 ohm; 1 ohm; 0.01 Kohms; 0.1 Kohms; 1 Kohms; 0.01 Mohms; 0.1 Mohms | |
| Accuracy | ±1% of reading (±10 ohms or 1 digit whichever greater) excluding probe error | |
| 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) |
| Resolution | 0.001 ppm; 0.01 ppm; 0.1 ppm; 0.001 g/L; 0.01 g/L; 0.1 g/L | |
| Accuracy | ±1% of reading (±0.05 ppm or 1 digit whichever greater) excluding probe error | |
| Factor | 0.40 to 1.00 | |
| Salinity | Range | % NaCl: 0.0 to 400.0 % |
| Resolution | 0.1 % | |
| Accuracy | ±1% of reading excluding probe error | |
| Temperature Channel 2 | Range | -20.0 to 120°C |
| Resolution | 0.1°C | |
| Accuracy | ±0.2 °C (excluding probe error) | |
| EC Calibration | automatic up to two points with seven memorized 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) | |
| Constant Cell Setup | 0.010 to 10.000 | |
| NaCl Calibration | max. one point only (with HI 7037 standard) | |
| EC Probe | HI 76310 platinum four ring conductivity/TDS probe with 1 m (3.3') cable (included) | |
| Temperature Source | automatic from sensor inside the probe; manual entry | |
| EC Temp. Compensation | NoTC, MTC, ATC | |
| Reference Temperature | 15, 20, 25 °C | |
| Temperature Coefficient | 0.00 to 10.00 %/°C | |
| Log On Demand | 400 samples | |
| Lot Logging | 5, 10, 30 seconds; 1, 2, 5, 10, 15, 30, 60, 120, 180 minutes (max 600 samples) | |
| PC interface | opto-isolated USB | |
| Input Impedance | 1012 Ohms | |
| Power Supply | 12 VDC adapter (included) | |
| Environment / Dimensions / Weight | 0 to 50 °C (32 - 122 °F) RH max 55% non-condensing / 235 x 207 x 110 mm (9.2 x 8.14 x 4.33”) / 1.8 Kg (4.1 lbs.) |