The HI8424 is a compact, waterproof,
portable pH/mV/temperature meter that is supplied complete with a
protective carrying case, PEI plastic body pH electrode, stainless steel
temperature probe, calibration buffer sachets, and cleaning solution
sachets. The meter features automatic calibration at one or two points
as well as Automatic Temperature Compensation (ATC) when the temperature
probe is connected.
Compact waterproof design
Automatic Temperature Compensation (ATC)
Automatic one or two-point calibration
The HI8424 is an economical portable pH/ mV meter. This meter uses
a BNC connector for the pH electrode input allowing for a wide
selection of pH and ORP electrodes to be used. A separate temperature
probe is supplied to provide temperature compensated pH measurement. The
HI8424 is very basic in operation with automatic calibration to one or
two points to any of the three programmed buffer values (pH 4.01, 7.01,
and 10.01). The simplicity in operation and the economical price point
has made the HI8424 one of the most popular meters available in the
Low Battery Indicator - A low
battery indicator will be displayed when the battery life is almost
exhausted (5% remaining) alerting the user that a new battery will be
needed in the near future.
Automatic Shutoff - The automatic shutoff feature will turn the meter off after 20 minutes to conserve battery life.
High Resolution/Accuracy mV Range -
The HI8424 automatically switches resolution from 1 mV to 0.1 mV when
ORP readings are between -699.9 to +699.9 mV. The accuracy within this
range is ±0.2 mV.
Automatic Temperature Compensation - Separate temperature probe is supplied to provide temperature compensated measurements.
Automatic Calibration - calibration to one or two points to any of the three programmed buffer values (pH 4.01, 7.01, and 10.01).
Waterproof - Compact, heavy duty casing that is protected against any ingress of water that would damage the electronics.
-2.00 to 16.00 pH
automatic, at one or two points with three standard buffers (4.01, 7.01,10.01)
±699.9 mV; ±1999 mV
0.1 mV; 1 mV
±0.2 mV; ±1 mV
-20.0 to 120.0°C / -4.0 to 248.0°F
0.1°C / 0.1°F
Temperature Accuracy (@ 25°C/77°F)
automatic from -20.0 to 120.0ºC (-4.0 to 248.0ºF) or manual without temperature probe connected
HI1230B PEI body pH probe with BNC connector and 1 m (3.3’) cable (included)
HI7662 stainless steel temperature probe with 1 m (3.3’) cable (included)
From 75 to 110% / ±1 pH
Battery Type / Life
9V / approximately 150 hours of continuous use; auto-off after 20 minutes of non-use (can be disabled)
0 to 50°C (32 to 122°F); RH max 100%
164 x 76 x 45 mm (6.5 x 3.0 x 1.8”)
180 g (6.3oz.)
HI8424 is supplied with HI1230B pH
electrode, HI7662 temperature probe, HI70004 pH 4.01 buffer solution
sachet, HI70007 pH 7.01 buffer solution sachet, HI700601 electrode
cleaning solution sachets (2), battery, protective case and