Hanna HI2002 Portable Benchtop pH/ORP/Temperature Meter
| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI2002 |
| pH Range | -2.000 to 16.000 |
| pH Resolution | 0.001 / 0.01 |
| pH Accuracy | ±0.002 / ±0.01 |
| mV Range (pH-mV) | ±1000 mV |
| ORP Range | ±2000 mV |
| mV Resolution/Accuracy | 0.1 mV / ±0.2 mV (±999.9 mV), ±1 mV (±2000 mV) |
| Temperature Range | -20.0 to 120.0 °C |
| Temp Resolution/Accuracy | 0.1 °C / ±0.5 °C |
| Calibration | Up to 5-point auto-recognizing pH, single-point ORP |
| Data Storage | 1000 auto, 200 interval, 600 manual |
| Interface | micro-USB + USB-A |
| Power | Rechargeable Li-ion battery with 5 V adapter |
| Dimensions | 202 × 140 × 12 mm |
| Weight | 250 g |
Overview
The Hanna HI2002 is a high-precision, multi-parameter benchtop/portable pH/ORP/temperature meter engineered for laboratories, quality control environments, and field applications requiring traceable, reproducible electrochemical measurements. It operates on potentiometric principles: pH measurement follows the Nernst equation via glass electrode potential difference relative to a stable reference; ORP quantifies redox potential in millivolts using inert platinum or gold sensing elements; temperature is acquired via integrated Pt1000 or thermistor-based probes embedded in smart electrodes. Its modular architecture supports interchangeable digital electrodes with 3.5 mm locking connectors, enabling rapid deployment across diverse sample matrices—from aggressive industrial process streams to sensitive biological buffers—while maintaining compliance with ISO/IEC 17025 documentation requirements.
Key Features
- Tri-mode operation: benchtop (with adjustable stand), wall-mounted (using included bracket for overhead installation), and handheld—optimized for ergonomic workflow integration.
- 5.5-inch high-contrast LCD with 150° viewing angle, readable up to 5 meters; capacitive touch interface with haptic feedback for glove-compatible operation.
- Digital smart electrodes (e.g., HI11310 pH probe) embed microprocessor memory storing calibration history, serial ID, and sensor diagnostics—automatically recognized upon insertion.
- CAL Check™ algorithm continuously validates electrode health: compares current calibration slope and offset against historical baselines; flags degraded response, clogged junctions, expired buffers (e.g., pH 4.01, 7.01, 10.01 certified standards), or thermal drift.
- Real-time impedance monitoring during measurement detects pH electrode failure (e.g., >1 GΩ resistance indicating dried gel or cracked bulb) before erroneous readings occur.
- Auto-ranging mV measurement with selectable resolution (0.1 mV below ±999.9 mV; 1 mV beyond) ensures optimal signal-to-noise ratio across low-potential fermentation assays and high-voltage chlorination monitoring.
Sample Compatibility & Compliance
The HI2002 accommodates aqueous, non-aqueous, and semi-solid samples compatible with standard pH/ORP electrodes—including HI36180 (platinum) and HI36200 (gold) ORP sensors for oxidizing environments. Its IP54-rated enclosure meets IEC 60529 for dust resistance and light splashing, supporting use in ISO Class 7 cleanrooms and food processing lines. Data integrity complies with GLP and GMP frameworks: all stored measurements include timestamp, electrode ID, calibration parameters, ambient temperature, and operator ID (via optional user login). Audit trails adhere to FDA 21 CFR Part 11 requirements when paired with Hanna’s HI92000 software (version 7.0+), enabling electronic signatures and immutable record retention.
Software & Data Management
Data export occurs via dual-interface architecture: micro-USB enables simultaneous charging and real-time data streaming to PC; standard USB-A port supports direct flash drive logging. The HI92000 Windows software provides advanced analysis tools—including trend plotting, statistical summaries (mean, SD, RSD), and custom report generation compliant with ISO/IEC 17025 clause 7.8. All 1000 auto-stored readings retain metadata (date/time, electrode SN, calibration status, temperature compensation value), facilitating root-cause analysis during out-of-spec investigations. Firmware updates are delivered through the same interface, ensuring long-term regulatory alignment.
Applications
- Environmental labs: wastewater pH/ORP profiling per ASTM D1293 and EPA Method 150.1; acid mine drainage monitoring.
- Pharmaceutical QC: buffer preparation verification (USP ), lyophilization cycle validation, and cleaning-in-place (CIP) endpoint detection.
- Food & beverage: titratable acidity tracking in dairy, redox potential control in wine fermentation (OIV-MA-AS313-01A), and brine stability in canned goods.
- Electroplating: bath chemistry control (e.g., chromic acid reduction potential at 1200–1400 mV vs. Ag/AgCl).
- Academic research: enzyme kinetics studies requiring sub-0.002 pH precision under temperature-controlled conditions (±0.5 °C accuracy).
FAQ
What electrode types are supported?
The HI2002 accepts all Hanna digital electrodes with 3.5 mm DIN connectors, including HI11310 (pH/temp), HI36180 (ORP/Pt), HI36200 (ORP/Au), and HI7698282 (dissolved oxygen). Analog electrodes require HI2002-0 base unit plus HI8424 adapter.
Does it support automatic temperature compensation (ATC)?
Yes—integrated Pt1000 sensor in HI11310 automatically compensates pH and ORP measurements across -20.0 to 120.0 °C; manual input is available for external probes.
How is calibration traceability ensured?
Each calibration event logs buffer lot numbers, expiration dates, and measured mV/pH values; HI92000 software generates PDF certificates with digital signatures meeting ISO/IEC 17025 clause 7.7 requirements.
Can data be exported to LIMS?
Yes—CSV and Excel formats are natively supported; HI92000 includes ODBC drivers for direct SQL database ingestion into enterprise LIMS platforms.
Is the battery replaceable in the field?
No—the sealed Li-ion battery is service-replaceable only by authorized Hanna technicians to maintain IP54 integrity and calibration validity.
