SALES AND TECHNICAL SERVICE CONTACTS Australia: Instruction Manual HI 9124 HI 9125 Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Portable Waterproof pH Meters Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (21) 4584.2941 • Fax (21) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel.
Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of the instruments, as well as a precise idea of their versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or turn to the back cover for our worldwide contact list. These instruments are in compliance with directives.
HI 1413B Glass-body, single junction, flat tip, Viscolene, non-refillable, combination pH electrode. Use: surface measurement. 12 mm 0.5" HI 1413 110 mm 4.3" ORP ELECTRODES HI 3131B Glass-body, refillable, combination platinum ORP electrode. Use: titration. 12 mm 0.5" HI 3131 150 mm 5.9" "S" VERSION HI 3230B Plastic-body (PEI), gel-filled, combination platinum ORP electrode. Use: general purpose. 12 mm 0.
FUNCTIONAL DESCRIPTION FC 100B Plastic-body (PVDF), double junction, refillable, combination pH electrode. Use: general purpose for food industry. 12 mm 0.5" FC 100 120 mm 4.7" FC 200B Plastic-body (PVDF), open junction, conic, Viscolene, non-refillable, combination pH electrode. Use: meat & cheese. 6 mm 0.25" FC 200 75 mm 2.95" FC 210B Glass-body, double junction, conic, Viscolene, non-refillable, combination pH electrode. Use: milk, yogurt. 12 mm 0.5" FC 210 120 mm 4.7" 1) Temperature probe socket.
HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. 5mm DIA 0.2" 5mm 0.2" SPECIFICATIONS -2.00 to 16.00 p H ±699.9 mV / ±1999 mV (HI 9125 only) RANGE HI 1330 -20.0 to 120.0 °C (-4.0 to 248.0 °F) 120 mm 4.7" "S" VERSION HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. 8 mm 0.3" 0.01 p H 0.1 mV / 1 mV (HI 9125 only) RE SOL UTION 0.1 °C (0.1 °F) 7.5mm DIA 0.29" ±0.01 p H HI 1331 210 mm 8.
OPERATIONAL GUIDE INITIAL PREPARATION The meter is supplied with rechargeable batteries (located inside the meter - see page 14 for details). To prepare the instrument for use, connect the pH electrode and the temperature probe to the BNC and temperature sockets on the top of the instrument. The temperature probe can be used independently to take temperature measurements, or it can be used in conjunction with the pH electrode to utilize Automatic Temperature Compensation (ATC) mode.
ACCESSORIES pH CALIBRATION SOLUTIONS HI 70004P pH 4.01 Buffer Solution, 20 mL sachet, 25 pcs HI 70007P pH 7.01 Buffer Solution, 20 mL sachet, 25 pcs HI 70010P pH 10.01 Buffer Solution, 20 mL sachet, 25 pcs HI 7004L pH 4.01 Buffer Solution, 500 mL bottle HI 7004M pH 4.01 Buffer Solution, 230 mL bottle HI 7006L pH 6.86 Buffer Solution, 500 mL bottle HI 7006M pH 6.86 Buffer Solution, 230 mL bottle HI 7007M pH 7.01 Buffer Solution, 500 mL bottle HI 7007M pH 7.01 Buffer Solution, 230 mL bottle HI 7009L pH 9.
Submerge the ORP electrode 4cm (1½") into the sample to be tested and wait a few minutes for the reading to stabilize. Measurements within the ±699.9 mV range are displayed with 0.1 mV resolution, while outside this range the resolution automatically switches to 1 mV. For accurate ORP measurements, the surface of the electrode must be clean and smooth. Pretreatment solutions are available to condition the electrode and improve its response time (see "Accessories" section).
For refillable electrodes, if the refill solution (electrolyte) is more than 2½ cm (1") below the fill hole, add the appropriate Electrolyte Solution. p H CALIBRATION 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.
• The LCD will flash the "WAIT NOT READY" message. ELECTRODE CONDITIONING & MAINTENANCE • Once the reading is stable, if it is not close to the selected buffer, "WRONG " and "WRONG " will blink alternatively; if it is close to the selected buffer the display will change to "READY" and blinking "CFM". • Press the CFM key to confirm the calibration: the meter stores the offset calibration point.
TEMPERATURE CORRELATION FOR p H SENSITIVE GLASS The resistance of glass electrodes partially depends on the temperature. The lower the temperature, the higher the resistance. It takes more time for the reading to stabilize if the resistance is higher. In addition, the response time will suffer to a greater degree at temperatures below 25 °C. Since the resistance of the pH electrode is in the range of 50 – 200 Mohms, the current across the membrane is in the pico Ampere range.
p H BUFFER TEMPERATURE DEPENDENCE The temperature has an effect on pH. The calibration buffer solutions are affected by temperature changes to a lesser degree than normal solutions. During calibration the instrument will automatically calibrate to the pH value corresponding to the measured or set temperature. TEMP pH BUFFERS ºC ºF 4. 01 6. 86 7. 01 9. 18 10. 01 0 32 4.01 6.98 7.13 9.46 10.32 5 41 4.00 6.95 7.10 9.39 10.24 10 50 4.00 6.92 7.07 9.33 10.18 15 59 4.00 6.90 7.
Replace the rechargeable batteries only if necessary. To replace the rechargeable batteries, follow the next steps: • Turn OFF the instrument. • Unscrew the screws from the bottom sides of the instrument. SETUP MENU The instrument allows the user to configure several parameters through the Setup Menu. To enter the Menu mode, while in measurement mode, press and hold the SETUP key for about 5 seconds.
m V CALIBRATION (HI 9125 only ) HI 9125 has been 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 Dealer or the nearest Hanna Customer Service Center for more information. It is recommended to recharge the rechargeable batteries as soon as the display will flash the battery symbol.
