Hanna Instruments HI8424 Instruction Manual
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Hanna Instruments HI8424 Instruction Manual

Portable ph/mv/degree c meter
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Instruction Manual
HI8424
Portable pH/mV/°C Meter
w w w . h a n n a i n s t . c o m

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Summary of Contents for Hanna Instruments HI8424

  • Page 1 Instruction Manual HI8424 Portable pH/mV/°C Meter w w w . h a n n a i n s t . c o m...

  • Page 2: Table Of Contents

    Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using this instrument. This manual will provide you with the necessary information for the correct use of this instru- ment, as well as a precise idea of its versatility.

  • Page 3: Preliminary Examination

    Any defective items must be returned in the original packing with the supplied accessories. GENERAL DESCRIPTION HI8424 is a portable microprocessor-based pH/mV/temperature meter. It features an enhanced user interface, rainproof casing, battery percentage indication, low battery detection, automatic shut-off, automatic calibration and error codes to guide the user in calibration and troubleshooting.

  • Page 4: Functional Description

    FUNCTIONAL DESCRIPTION 1) BNC connector for pH or ORP electrodes 2) Liquid Crystal Display (LCD) 3) RANGE key, to select pH, mV or temperature range 4) Up Arrow key, to manually set the temperature value when no temperature probe is connected 5) CAL/SELECT key, to enter calibration mode or select menu options 6) CFM/SETUP key, to confirm data or enter/exit setup menu 7) Down Arrow key, to manually set the temperature value when no temperature...

  • Page 5: Specifications

    SPECIFICATIONS -2.00 to 16.00 pH Range ±699.9 mV/ ±1999 mV -20.0 to 120.0 °C/ -4.0 to 248.0 °F Resolution 0.01 pH/ 0.1 mV/ 1 mV/ 0.1 °C/ 0.1 °F Accuracy ±0.01 pH/ ±0.2 mV/ ±1 mV/ ±0.4 °C/ ±0.8 °F (@20 °C/68 °F) Typical EMC ±0.02 pH/ ±0.2 mV/ ±1 mV/ ±0.4 °C/ ±0.8 °F...

  • Page 6: Operational Guide

    OPERATIONAL GUIDE INITIAL PREPARATION • Remove the electrode protective cap before taking any measurements. If the electrode has been left dry, soak the tip in HI70300 storage solution for a few hours or overnight to reactivate it. • Connect the pH electrode to the BNC connector on the top of the instrument. •...
  • Page 7 TEMPERATURE COMPENSATION The meter is designed to compensate for temperature, as the response of the pH electrode is directly affected by temperature. Automatic Temperature Compensation (ATC shown on LCD) To use the ATC feature, submerge the temperature probe into the sample as close as possible to the electrode and wait for a few minutes.
  • Page 8 Notes: • To perform correct ORP measurements, the surface of the ORP electrode must be clean and smooth. • When not in use, the tip of the electrode should be kept moist (use HI70300 storage solution) and safe from any mechanical stress which might cause damage to the glass/platinum junction.

  • Page 9: Ph Calibration

    pH CALIBRATION For better accuracy, frequent calibration of the instrument is recommended. The instrument should be recalibrated for pH: a) Whenever the pH electrode or temperature probe is replaced b) At least once a week c) After testing aggressive chemicals d) When extreme accuracy is required PREPARATION Pour small quantities of pH 7.01 (HI7007) and pH 4.01 (HI7004) or pH 10.01...
  • Page 10 • When the buffer value is recognized and the reading is stable, an acoustic signal (if enabled) advises the user, the “pH” symbol stops flash- ing, the hourglass indicator disappears and the “CFM” tag starts blinking to indicate that the value can be confirmed.

  • Page 11: Ph Buffer Temperature Dependence

    • Rinse the temperature probe of a ChecktempC (or ChecktempF) or another accurate thermometer, and place it close to the pH electrode. • Use the UP and DOWN arrow keys to manually adjust the temperature to match the reference thermometer. •...

  • Page 12: Menu Selection

    MENU SELECTION While in normal measurement mode, press and hold the CFM/SETUP key for about 5 seconds until the meter enters the menu selection mode. The following parameters can be set from the menu: 1. Auto-off feature: 20 minutes (default setting) or disabled; 2.

  • Page 13: Mv Calibration

    CALIBRATION HI8424 has been accurately precalibrated for mV range at the factory. For optimum accuracy, it is recommended to recalibrate the meter for mV readings at least once a year. Contact your local Hanna Instruments Office for more information.

  • Page 14: Battery Replacement

    BATTERY REPLACEMENT The meter displays the remaining battery percentage when turned on. When the level is below 5%, the battery symbol on the bottom left of the LCD blinks to indicate a low battery condition. If the battery level is low enough to cause erroneous readings, the Battery Error Prevention System (BEPS) turns the meter off.

  • Page 15: Lcd Messages And Troubleshooting

    LCD MESSAGES & TROUBLESHOOTING TAGS & SYMBOLS • pH, mV, °C, °F Measurement unit of the selected mode • ATC Indicates Automatic Temperature Compensation (in pH or temperature mode) • MTC Indicates Manual Temperature Compensation (in pH or temperature mode) •...
  • Page 16 “Er1” and “Er2” EPROM error Contact your local messages Hanna Instruments Office Note: For field applications, it is always recommended to keep a conditioned spare electrode handy. When anomalies cannot be resolved with simple maintenance, change the electrode and recalibrate the meter.

  • Page 17: Electrode Conditioning & Maintenance

    ELECTRODE CONDITIONING & MAINTENANCE Only for refillable electrodes; must be open while measuring. PREPARATION PROCEDURE Remove the electrode protective cap. DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal with electrodes and they will disappear when rinsed with water. During transport tiny bubbles of air may have formed inside the glass bulb.
  • Page 18 For refillable electrodes, if the refill solution (electrolyte) is more than 2.5 cm (1”) below the fill hole, add the appropriate electrolyte solution. MEASUREMENT Rinse the electrode tip with distilled water, immerse it (4 cm / 1½”) in the sample and stir gently for a few seconds. For a faster response and to avoid cross contamination of the samples, rinse the electrode tip with the solution to be tested, before taking any measurements.

  • Page 19: Accessories

    ACCESSORIES pH CALIBRATION SOLUTIONS HI70004P pH 4.01 buffer solution, 20 mL sachet (25 pcs) pH 4.01 buffer solution, 230 mL bottle HI7004M HI7004L pH 4.01 buffer solution, 500 mL bottle HI8004L pH 4.01 buffer solution, 500 mL FDA bottle HI70007P pH 7.01 buffer solution, 20 mL sachet (25 pcs) HI7007M pH 7.01 buffer solution, 230 mL bottle...
  • Page 20 HI7082 3.5 M KCl electrolyte solution, 4 x 30 mL bottle, for double junction electrodes HI8082 3.5 M KCl electrolyte solution, 4 x 30 mL FDA bottle, for double junction electrodes HI8093 1 M KCl+AgCl electrolyte solution, 4 x 30 mL FDA bottle, for double junction electrodes ORP SOLUTIONS HI7091L...
  • Page 21 HI1083B Glass body, micro, Viscolene, non-refillable, combination pH electrode. Use: biotechnology, micro titration. 12 mm 5 mm 3 mm 0.5" 0.2" 3.0 mm DIA 0.12" 0.12" HI 1083 120 mm 4.7" HI1131B / HI1111S Glass body, single junction, refillable, combination pH electrode. Use: general purpose.
  • Page 22 HI1332B / HI1312S Plastic body, double junction, refillable, combination pH electrode. Use: general purpose. 12 mm 0.5" HI 1332 120 mm "S" VERSION 4.7" HI2031B / HI2020S Glass body, semimicro, conic, refillable, combination pH electrode. Use: semisolid products. HI 1312 6 mm 0.25"...
  • Page 23 FC220B Glass body, triple ceramic, single junction, refillable, combination pH electrode. Use: food processing. 9.5mm DIA 12 mm 0.37" 0.5" FC 220 120 mm 4.7" FC911B PVDF body, double junction, refillable with built-in amplifier, combination pH electrode. Use: very high humidity. 12 mm 0.5"...
  • Page 24 12 mm 0.5" HI 4430 120 mm 4.7" "S" VERSION Consult the HANNA Instruments General Catalog for a complete and wide selection of electrodes. EXTENSION CABLES FOR SCREW-TYPE ELECTRODES (SCREW HI 4410 TO BNC CONNECTOR) HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC...

  • Page 25: Ph Electrode Application Reference Guide

    pH ELECTRODE APPLICATION REFERENCE GUIDE Application Electrodes * 1. Aquarium HI1332B, HI1312S 2. Bath-water HI1130B, HI1110S 3. Beer HI1131B, HI1111S 4. Bread HI2031B, FC200B, HI2020S, FC200S 5. Cheese FC 200B, FC 200S 6. Dairy products FC 911B, FC100B 7. Dirty water HI1230B, HI1210S 8.
  • Page 26 24 Vac or 60 Vdc. Use plastic beakers to minimize any EMC interferences. To avoid damages or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
  • Page 27 WARRANTY HI8424 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for a period of six months. This warranty is limited to repair or replacement free of charge.
  • Page 28 Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.com MAN8424 09/17 Printed in ROMANIA...

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