HI-2641 Dissolved Oxygen Benchtop Meter with Data Logging
HI-2641 benchtop meter enables fast, accurate measurements utilising the Hanna Instruments digital electrode / probe for dissolved oxygen (HI-764080). Each digital electrode / probe has a unique serial number and the parameter that it measures is automatically identified by the meter.
Once connected, the single sensor or sensors are ready to measure the parameter along with temperature. The HI-2641 measures dissolved oxygen in ppm and % saturation while adding data logging capabilities.
The intuitive design simplifies configuration, calibration, measurement, data logging and transfer of data to a USB thumb drive or computer. The benchtop meter offers a Basic Mode that streamlines measurement configuration and is useful for routine applications. Additionally, HI-2641 can be used in Standard Operating Mode, where all features and capabilities are enabled.
The meter has a large display with capacitive keys which features a 5.5” (14 cm) LCD. The large display provides a 130 ° wide viewing angle.
Main feature points
- Automatic parameter recognition
- DO choice of measurement unit: ppm (mg/L), % saturation
- Basic mode for simplified operation
- Dedicated GLP key
- GLP data included with logged data
- Simplified data transfer to a PC
- Internal clock and date
Key Features
Digital probe input - simply connect each probe via the 3.5 mm jack, Digital Smart Electrodes are automatically recognised.
Clear, full text readout
- The HI-2641 presents clear, detailed text prompts at the bottom section of the screen.
Two operating modes - HI-2641 can be used in Standard or Basic Operating Modes. Standard Mode enables all features while Basic Mode displays a simplified screen and features which is ideal for routine measurements.
Data logging - The HI-2641 provides ample data storage capacity, allowing you to save up to 1000 log records. Each data set comprehensively includes readings, GLP information, as well as date and time stamps.
GLP - The sensor retains data from the most recent calibration, including date, time, and standards utilised. This information is available in Basic and Standard modes and is also included with logged data.
Capacitive touch keypad - HI-2641 features sensitive capacitive touch buttons for accurate keystrokes for navigating menus and screens. Since they are part of the screen, the buttons can never get clogged with sample residue.
Easy to read LCD - HI-2641 features a 5.5” (14 cm) LCD display that you can clearly view from over 5 m (16.4’). The large display, with its wide 130° viewing angle, provides one of the easiest to read LCDs in the industry.
USB-C port for charging and data transfer - The HI-2641 features a streamlined USB-C port that facilitates transferring data to your computer.
What's included:
- HI-764080 Dissolved Oxygen electrode
- HI-764026 Electrode holder with the following accessories: base plate with integrated pivot pin; cable holder clip, attached
- DO Calibration Kit – HI-7041S Refill electrolyte solution; DO membrane caps (2); 0-rings (2)
- HI-920018 - 1.5m USB-C to USB-C cable
- USB-C power adapter
- Instrument quality certificate
- Probe / electrode quality certificate
- Battery safety insert
- Quick reference guide with QR code for instruction manual download
| Specification | Detail |
| HI2640 and HI2641 | using the Dissolved Oxygen probe HI764080 |
| DO Range | 0.00 to 45.00 ppm (mg/L) 0.0 to 300.0% |
| DO Resolution | 0.01 ppm (mg/L) 0.1% |
| DO Accuracy at 25 °C / 77 °F | ±1.5% of reading ±1 digit |
| Temperature Range | -20.0 to 120.0 °C * (-4.0 to 248.0°F) |
| Temperature Resolution | 0.1 °C (0.1 °F) |
| Temperature Accuracy at 25 °C / 77 °F | ±0.5 °C (0.9 °F) |
| DO calibration | One or two points at 0% (HI7040) and 100% (water-saturated air) |
| DO Pressure compensation | Automatic 450.0 to 850.0 mmHg |
| DO Pressure compensation resolution | 0.1 mmHg |
| DO Salinity compensation | 0 to 40 g/L |
| DO Salinity compensation resolution | 1 g/L |
| Temperature compensation | 0.0 to 50.0 °C (32.0 to 122 °F) |
| Logging (HI2641 only) | Up to 1000 records organized in: � Manual log-on-demand, maximum 200 logs � Manual log-on-stability, maximum 200 logs � Interval logging**, maximum 600 logs (100 lots) |
| Notes | * Temperature limits will be reduced to actual probe limits. ** When operating in Standard Mode only! |
| PC interface (HI2641 only) | USB-C |
| Power supply | USB Type C (5 VDC |
| Environment | 0 to 50 °C (32 to 122 °F) Maximum 95 % RH non-condensing |
| Dimensions | 205 x 160 x 77 mm (8.0 x 6.2 x 3.0 inches) |
| Weight | Approximately 0.85 kg (1.87 lbs.) |
