HI 9024 • HI 9025

pH and pH/ORP Meterswith Temperature

Conductivity

Conductivity (EC) is a measure of the ability ofwater to pass an electrical current. Conductivity in water is affected by the pres- ence of inorganic dissolved solids such as chloride, nitrate, sulfate, and phosphateanions (ions that carry a negative charge) orsodium, magnesium, calcium, iron, and alu- minum cations (ions that carry a positive charge). These are called Total Dissolved Solids (TDS). Conductivity is also affected by temperature: the warmer the water, the higher the conductivity. For this reason, conductivity is reported as conductivity at 25 degreesCelsius (25 °C). Our waterproof conductivityand total dissolved solids meters have many applications, such as: -Monitor TDS levels for sensitive speciessuch as discus. -Use in conjunction with R/O units, both todetermine membrane efficiency (outflow of water should read 5-25 uS/cm) and correct application of the purified water.-Take precise salinity readings. TDS or ECcan be converted to salinity more accuratelythan a hydrometer or refractometer. •Specialized electrode•High accuracy •Fast response •Automatic temperature compensation This family of industrial ph meters feature manual or automatic temperature compensation with separatepH and temperature probes. The Auto-Instruction feature guides the user through the calibration process, using one or two of five memorized buffers. The HI 9025 has the capability to measureORP as well with the optional ORP probe (HI 3230B).

SPECIFICATIONS HI 9024 HI 9025

pH: 0.00 to 14.00;Temperature: 0.0 to 100.0°C/32.0to 212.0°F pH: 0.00 to 14.00; mV: ±399.9 to ±1999;Temperature: 0.0 to 100.0°C/32.0to 212.0°F Range Resolution pH: 0.01; Temperature: 0.1°C/0.1°F pH: 0.01; mV: 0.1, 1;Temperature: 0.1°C/0.1°F Accuracy
(@20°C/68°F) pH: ±0.01; Temperature:±0.4°C/±0.8°F pH: ±0.01; mV: ±0.2, ±1;Temperature: ±0.4°C/±0.8°F Conductivity(mS/cm) RefractiveIndex SpecificGravity PSU pH Calibration Automatic, 1 or 2 point with 5 memorized buffer values (pH 4.01, 6.86, 7.01, 9.18,10.01); offset calibration: ±1 pH; slope calibration: 70 to 108% (25°C) (20°C) (25°C) Temp. Compensation Automatic or manual, -5 to 105°C (23°F to 221°F) 1.333 1 46.2 1.3385 1.0226 30 pHElectrode HI 1230B, double junction, PEI body, gel filled, BNC connectorand 1 m cable (included) 47.6 1.3386 1.0233 31 Temperature Probe HI 7669/2W with 1 m (3.3’) cable (included) 49 1.3388 1.0241 32 Input Impedance 10
12 Ohm 50.4 1.339 1.0249 33 Battery Type/Life (4) 1.5V AA / approx. 500 hours of continuous use;auto-off after 20 minutes of non-use(can be disabled) Environment 0 to 50°C (32 to 122°F); 100% RH Water Conductivity Dimensions 196 x 80 x 60 mm (7.7 x 3.1 x 2.4’’) Pure water 0.055 µS/cm Weight 500 g (1.1 lb.) Distilled water 0.5 µS/cm Mountain water 1.0 µS/cm

ORDERING INFORMATION ACCESSORIES

Domestic water 500-800 µS/cm HI 9024 is supplied with HI 1230B ph electrode, HI 7669/2Wtemperature probe, pH 4 and pH 7 buffer sachets, 100 mL plastic beaker, batteries, rugged carrying case and instructions. HI 3230B ORP electrode, gel filled, PEI body, BNC, 1 m cable Max. for potable water 10,055 µS/cm (10 mS/cm) HI 9025 is supplied with HI 1230B pH electrode, HI 7669/2Wtemperature probe, pH 4 and pH 7 buffer sachets, 100 mL plastic beaker, batteries, rugged carrying case and instructions. Sea water 52,000 µS/cm (52 mS/cm) HI 7007L pH 7.01 buffer solution, 500 mL bottle HI 7010L pH 10.01 buffer solution, 500 mL bottle

Tank

HI 70300L Electrode storage solution, 500 mL bottle

Tip

PSU is an acronym for practical salinity units,which is essentially a modern replacement for ppt, since salinity is no longer defined as directly relating to solids in the water, but rather by its conductivity.

HI 7061L Electrode cleaning solution, 500 mL bottle HI 8427 pH/mV electrode simulator

12 HANNA instruments