The Hanna edge is thin and lightweight, measuring just ½" thick and weighing less than 9 ounces. edge has an incredibly wide viewing angle, 5.5" LCD and a sensitive capacitive touch keypad edge measures pH, conductivity and dissolved oxygen through its unique digital electrodes. These digital electrodes are auto-recognized. Providing sensor type, calibration data and a serial number, and they connect to edge with an easy to plug-in 3.5mm connector. edge's versatile design is equally at home in your hand, on a lab bench or mounted on a wall. edge simplifies measurement, configuration, calibration, diagnostics, logging and transferring data to a computer or a USB drive.
edge features Hanna's exclusive CAL-CHECK to warn you if the electrode you are using is not clean or if your buffers are contaminated during calibration. We have also added to CAL-CHECK for sensors with matching pin: now it warns you if the pH bulb is cracked, and if the junction of the electrode is compromised.
The electrodes used with edge are nearly as advanced as the edge itself: featuring a built-in microchip that stores sensor type, ID, and calibration information that is automatically retrieved by edge once the electrode is plugged in.
Stored pH calibration information includes: calibrated buffers, date, time, offset and slope characteristics of the electrode. Conductivity calibration information includes: calibrated conductivity standards, date, time, and cell
constant of the sensor. Dissolved oxygen calibration information includes: standards used for calibration, date, time, altitude and salinity correction.
These digital electrodes also feature an easy to plug in 3.5 mm connector so you never have to worry about the right angle or aligning pin settings.
Logging: stores up to 1000 records: 200 records (log-on-demand and stability logging); 600 records interval logging
Connectivity: 1 USB port for storage; 1 micro USB port for charging and PC connectivity
Range: 0.00 to 45.00 ppm; 0.0 to to 300.0 % saturation
Resolution: 0.01 ppm; 0.1 % saturation
Accuracy: ± 1.5% of reading ±1 digit
Calibration Points: one or two points at 0% (HI 7040 solution) and 100% (in air)
Temperature Compensation: ATC (0 to 50°C; 32.0 to 122.0°F)*
Salinity Compensation: 0 to 40 g/L (with 1 g/L resolution)
Altitude Compensation: -500 to 4000 m (with 100 m resolution)
Range: -20.0 to 120.0°C; -4.0 to 248.0°F
Resolution: 0.1°C; 0.1°F
Accuracy: ±0.2°C; ±0.4°F
INCLUDED: edge DO Kit, 115V, including edge meter, HI 764080 digital polarographic dissolved oxygen electrode, bench cradle, wall cradle, electrode holder, USB cable, 5V DC power adapter, HI 7041S electrolyte, two DO membranes, two replacement O-rings and instruction. Request pricing on buffers or storage solutions
The following link provides additional information from the instruction manual or original manufacturer's brochure. Right-click to open the PDF in a new window or download it: Hanna Instruments HI-2040 Bench-model Oxygen Meter