The HI9126 is a rugged, portable pH and mV meter designed to provide laboratory precision and accuracy under harsh environmental and industrial conditions. The meter offers a variety of features including CAL Check™ electrode diagnostics, automatic calibration to 1 or 2 points, automatic temperature compensation, backlit LCD, on-screen instructions, and Battery Error Prevention System.
The HI9126 includes Hanna‘s exclusive CAL Check™ technology. CAL Check™ monitors the pH bulb every time the instrument is calibrated. In the event of a dirty pH electrode, CAL Check™ warns users that maintenance may be needed.
Calibrated buffers are continuously displayed in measurement mode to remind users of the instrument’s calibration point. Users can easily determine if readings are taken too far outside the calibration range. The HI9126 can store and recall a reading at the touch of a button and features a real-time clock.
HI9126 utilizes the HI1230B double junction pH electrode. The double junction design helps to minimize junction contamination for consistently accurate results. The HI9126 can also measure ORP in the mV range using an optional ORP probe.
Features at a Glance
CAL Check Electrode Diagnostics - CAL Check™ monitors the condition of the pH electrode’s offset and slope characteristics. These characteristics are determined by the voltages generated in the calibration buffers. As part of the CAL Check feature the meter will display “clean” when the pH electrode needs to be cleaned.
One or Two-Point Calibration - Automatic calibration can be performed at 1 or 2 points using the 7 pre programmed buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, and 12.45) and 2 custom buffers.
Calibration Time-Out - A selectable interval from 0 (disabled) to 14 days can be set in which after the selected interval the meter will display “Cal Due”.
On-Screen Instructions - Clear and easy to use on-screen instructions take you through all of the steps in performing a calibration and taking measurements.
Durable Plastic Body pH Electrode - The HI9126 is supplied with the HI1230B PEI plastic body, double junction pH electrode that is gel filled. The PEI body offers excellent chemical resistance to many harsh chemicals. The double junction design helps minimize contamination of the inner reference cell which could cause precipitation of the Ag/AgCl electrolyte resulting in a clogged junction. The HI1230B is gel filled and requires no refill electrolyte solution to maintain.
Temperature Compensation - The HI9126 offers automatic or manual temperature compensation of pH measurements over a wide range from -20.0 to 120.0°C.
mV Mode - The HI9126 has a mV mode that can be used with a wide variety of ORP electrodes for monitoring oxidation reduction potentials.
Stability Indicator - The HI9126 features a stability indicator. An hourglass appears on the display when there is instability in the reading. The hourglass disappears once the reading has stabilized. At that time a reading should be taken or stored.
Measurement Recall - The HI9126 has a “MEM” button to store a reading. The reading can be recalled at anytime by pressing the memory recall “MR” button
Backlit LCD - The HI9126 has a display with a backlight for easy viewing of readings in poor lighting conditions.
Automatic Shut-off - The HI9126 has an adjustable auto-off feature. The meter can be set to turn itself off after 20 minutes to prevent accidental drainage of the batteries or it can be disabled so the user has to turn the meter off with the power button.
Battery Error Prevention System (BEPS) - The Battery Error Prevention System detects when the batteries become too weak to ensure reliable meaasurements.
pH Range -2.00 to 16.00 pH pH Resolution 0.01 pH pH Accuracy ±0.01 pH pH Calibration automatic, one or two-point with seven standard buffers available (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01,12.45) and two custom buffers pH Input impedence 10¹² Ohms mV Range ±699.9 mV; ±1999 mV mV Resolution 0.1 mV; 1 mV mV Accuracy ±0.2 mV; ±1 mV Temperature Range -20.0 to 120.0°C (-4.0 to 248.0°F) Temperature Resolution 0.1°C / 0.1°F Temperature Accuracy ±0.4°C (±0.8°F) (excluding probe error) pH Electrode HI1230B PEI body pH electrode with BNC connector and 1 m (3.3’) cable (included) Temperature Probe HI7662 stainless steel temperature probe with 1 m (3.3’) cable (included) Automatic Shut-Off after 20 minutes of non-use (can be disabled) Battery Type/Life 1.5V (3) AAA / approximately 200 hours of continuous use without backlight (50 hours with backlight) Environment 0 to 50°C (32 to 122°F); RH max 100% Dimensions 185 x 72 x 36 mm (7.3 x 2.8 x 1.4”) Weight 300 g (10.6 oz.) Ordering Information HI9126 is supplied with HI1230B pH electrode, HI7662 temperature probe, HI70004 pH 4.01 buffer solution sachet (20 mL), HI70007 pH 7.01 buffer sachet (20 mL), HI700661 electrode cleaning solution sachet (20 mL), 100 mL plastic beaker, 1.5V AAA batteries (3), instructions and hard carrying case.