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Summary of Contents for Hanna Instruments HI 931400
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Page 1: Instruction Manual
Instruction Manual HI 9321 HI 931400 HI 931401 Microprocessor-based Bench pH/mV/°C Meters These Instruments are in w w w . h a n n a i n s t . c o m Compliance with the CE Directives... -
Page 2: Table Of Contents
Dear Customer, Thank you for choosing a Hanna Product. It is recommended that you read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for the correct use of the instrument, as well as a precise idea of its versatility. If you need more technical information, do not hesitate to e-mail us at tech@hannainst.com. -
Page 3: Preliminary Exam. & General Description
Any defective items must be returned in the original packing with the supplied accessories. GENERAL DESCRIPTION The Hanna Instruments HI 9321, HI 931400 and HI 931401 are microprocessor-based bench meters for pH, mV (ORP and ISE) and temperature measurements. -
Page 4: Functional Description
FUNCTIONAL DESCRIPTION HI 9321 pH calibration procedure Function Start calibration RANGE Select pH or ORP measurement ins rum n s Select buffer 1 value For storing display result Confirm when ready Recall previous stored data Select buffer 2 value Confirm when ready NOT READY CON WRONG °C... -
Page 5: Liquid Crystal Display
FUNCTIONAL DESCRIPTION H I 9 3 1 4 0 0 & H I 9 3 1 4 0 1 pH calibration procedure Function ins rum n s Start calibration For storing display result Select buffer 1 value Recall previous stored data Confirm when ready COMM For RS232 configuration Select buffer 2 value... -
Page 6: Specifications
SPECIFICATIONS HI 9321 & HI 931400 Range 0.00 to 14.00 ±399.9 mV ±1999 mV °C 0.0 to 100.0 Resolution 0.01 0.1 mV 1 mV °C Accuracy ±0.01 (@20°C/68°F) ±0.2 mV ±1mV °C ±0.5 Typical EMC ±0.02 Deviation ±0.5 mV ±1 mV °C ±2 pH Calibration... - Page 7 SPECIFICATIONS HI 931401 Range 0.00 to 14.00 / 0.000 to 14.000 ±999.9 (ISE & ORP) °C 0.0 to 100.0 Resolution 0.01 / 0.001 °C Accuracy ±0.002 & ±0.01 (@20°C/68°F) ±0.05% F.S. °C ±0.5 Typical EMC ±0.01 Deviation ±0.6 °C ±0.5 pH Calibration Automatic 1 or 2 points with 5 memorized buffers (4.01, 6.86, 7.01, 9.18, 10.01)
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Page 8: Functional Description Of Lcd
FUNCTIONAL DESCRIPTION OF HI 9231 & HI 931400 Primary Display NOT READY CON WRONG °C LOW BAT Secondary Display FUNCTIONAL DESCRIPTION OF HI 931401 LCD... -
Page 9: Operational Guide
OPERATIONAL GUIDE ELECTRODE AND PROBE CONNECTIONS For combination pH or ORP electrodes (with internal reference) plug the electrode's BNC to the socket on the back of the meter (pages 4- 5, # I). For electrodes with a separate reference, connect the measuring electrode's BNC to the BNC socket (pages 4-5, # I) and the reference electrode plug to the other socket (pages 4-5, # II or III). - Page 10 In order to take accurate pH measurements, make sure that the instrument has been calibrated before use (see page 12). For more accurate results, it is recommended that the electrode is rinsed thoroughly with a liberal amount of the sample to be measured.
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Page 11: Temperature Measurements
ORP MEASUREMENTS Press RANGE. Submerge the ORP or ISE electrode tip (4cm/ 1½") into the sample. Allow a few minutes for the reading to stabi- lize. ºC If readings are out of range "---" will appear on the LCD. °C See also "Taking REDOX Measurements"... -
Page 12: Ph Calibration
RESET BUTTON The RESET button (see pages 4-5, #V) should be used when the instrument displays erroneous messages due to strong electrical inter- ference or when the instrument's power supply was disconnected before the meter was switched off. It is recommended to recalibrate the unit before proceeding. pH CALIBRATION Calibrate the instrument often, especially if high accuracy is required. - Page 13 PROCEDURE Calibration has a choice of 5 memorized buffers: 4.01, 6.86, 7.01, 9.18 and 10.01 pH. It is always recommended to perform a two-point calibration, first in an offset buffer (pH 6.86 or pH 7.01) and then a slope value (pH 4.01, pH 9.18 or pH 10.01).
- Page 14 close to the selected buffer, the meter stores the reading. The buffer value is then displayed on the primary LCD and the secondary LCD will display "4.01". • Press CAL and the meter exits the calibra- tion mode. Two-point calibration Any two of the 5 memorized buffer solutions that are more than 1 pH apart can be used for this purpose.
- Page 15 Note: The meter will automatically skip the buffer that was used for the first calibration. pH 6.86 and pH 7.01 as well as 9.18 and 10.01 pairs of buffer solutions are also considered too close to allow an adequate two-point calibration. Consequently, after calibrating in one of the pair, the meter will also skip the other buffer.
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Page 16: Ph Values At Various Temperatures
pH VALUES AT VARIOUS TEMPERATURES 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 meter will automatically calibrate to the pH value corresponding to the measured or set temperature. TEMP pH VALUES °C... -
Page 17: Temperature And Mv Calibration
TEMPERATURE AND mV CALIBRATION The pH meter has been factory calibrated for temperature and mV. The temperature probes and ORP electrodes are interchangeable and no temperature or mV calibration is needed when they are replaced. If, for any reason, the temperature or the mV measurements are inaccurate, temperature or mV recalibration should be carried out (see pages 24 and 25). -
Page 18: Troubleshooting Guide
TROUBLESHOOTING GUIDE Symptoms Problem Solution The meter is slow in The electrode is not Leave the electrode in a stor- responding or gives working or the reference age solution after cleaning faulty readings junction is clogged the junction. If problem per- sists, replace the electrode The meter does not Out of order pH elec-... -
Page 19: Electrode Conditioning & Maintenance
ELECTRODE CONDITIONING & MAINTENANCE PREPARATION Remove the 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 form inside the glass bulb affecting proper functioning of the electrode. - Page 20 Refill the reference chamber with fresh electrolyte (HI 7071 or HI 8071 for single junction or HI 7082 or HI 8082 for double junction electrodes). Allow the electrode to stand upright for 1 hour. Follow the Storage Procedure above. AmpHel ® is a registered Trademark of "Hanna Instruments"...
- Page 21 CLEANING PROCEDURE General Soak in Hanna HI 7061 or HI 8061 General Cleaning Solution for approximately ½ hour. Removal of films, dirt or deposits on the membrane/junction: - Protein Soak in Hanna HI 7073 or HI 8073 Protein Cleaning Solution for 15 minutes. - Inorganic Soak in Hanna HI 7074 or HI 8074 Inorganic Clean- ing Solution for 15 minutes.
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Page 22: Temperature Correlation For Ph
TEMPERATURE-RESISTANCE CORRELATION FOR HANNA pH SENSITIVE GLASS The resistance of glass electrodes partially depends on the tempera- ture. The lower the temperature, the higher the resistance. It takes longer for the reading to stabilize if the resistance is higher. In addition, the response time will suffer to a greater degree at temperatures below 10°C. - Page 23 High concentrations of sodium ions interfere with readings in alkaline solutions. The pH at which the interference starts to be significant depends upon the composition of the glass. This interference is the alkaline error and causes the pH to be underestimated. Hanna's glass formulations have the indicated characteristics.
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Page 24: Additional Calibration Procedures And Information
ADDITIONAL CALIBRATION PROCEDURES & INFORMATION (for technical personnel only) TEMPERATURE CALIBRATION Initial Preparation • Prepare a vessel containing ice and water and another one containing hot water (at a temperature of at least 50°C). Place insulation material around the container to minimize tempera- ture changes. - Page 25 • At the end of the mV calibration, the meter will automatically return to the pH measurement mode. INTERFACE WITH PC (HI 931400 & HI 931401) If you are not using Hanna Instruments HI 92000 application software, please find below some additional information to help you link-up to your PC.
- Page 26 The following baud rate can be selected with °C °C °C and °C: 150, 300, 600, 1200 (factory setting) and 2400. Press CFM to confirm the setting and the primary LCD shows the current command prefix (factory setting is 16). Note: The Command Prefix must not be changed when using HI 92000 Hanna Software.
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Page 27: Accessories
is equivalent to pressing the °C key is equivalent to pressing the MEM key is equivalent to pressing the MR key is equivalent to pressing the COMM key is equivalent to pressing the OFF key Commands requiring an answer: Causes the meter to send the pH value. If the reading is out of range "Err 1"... - Page 28 ELECTRODE STORAGE SOLUTION HI 70300L Storage Solution, 460 mL ELECTRODE STORAGE SOLUTION IN FDA APPROVED BOTTLES HI 80300L Storage Solution, 460 mL ELECTRODE CLEANING SOLUTIONS HI 70000P Electrode Cleaning Sachets, 20 mL, 25 pcs HI 7061L General Cleaning Sol., 460 mL HI 7073L Protein Cleaning Sol., 460mL HI 7074L...
- Page 29 pH & ORP ELECTRODES All electrodes part numbers ending in B are supplied with a BNC connector and 1 m (3.3') cable. HI 1043B Glass-body, double junction, refillable, combination pH electrode. Use: strong acid/alkali. 9.5mm DIA 12 mm 0.37" 0.5" HI 1043 120 mm 4.7"...
- Page 30 HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. 5mm DIA 0.2" 0.2" HI 1330 120 mm 4.7" "S" VERSION HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. 8 mm 7.5mm DIA 0.3"...
- Page 31 FC 100B Plastic-body (Kynar ), 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 (Kynar ), open junction, conic, Viscolene, non-refillable, combination pH electrode. Use: meat & cheese. 6 mm 0.25"...
- Page 32 FC 911B Plastic-body (Kynar ), double junction, refillable with built-in ampli- fier, combination pH electrode. Use: very high humidity. 12 mm 0.5" FC 911 110 mm 4.3" HI 1413B Glass-body, single junction, flat tip, Viscolene, non-refillable, combina- tion pH electrode. Use: surface measurement. 12 mm 0.5"...
- Page 33 HI 5412 Glass-body, single Calomel reference half-cell electrode, refillable with 4mm plug with 1m (3.3') cable. Use: general purpose with constant temperature range. 12 mm 0.5" HI 5412 120 mm 4.7" ORP electrodes: HI 3131B Glass-body, refillable, combination platinum ORP electrode. Use: titration.
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Page 34: Warranty
Windows is registered Trademark of "Microsoft Co." WARRANTY The Hanna Instruments HI 9321, HI 931400, HI 931401 pH meters are warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions. -
Page 35: Ce Declaration Of Conformity
To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24VAC or 60VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. - Page 36 w w w . h a n n a i n s t . c o m...
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