Instruction Manual HI 221 HI 223 pH/mV/ºC Bench Meters with Calibration Check POOR GOO D SLO W FAST pH C ATC CAL CF GLPM C C LOG CFM/G LP SET/C LR RCL Selec t pH/O RP Store Log Inf ormati Reca on ll Log Inform Set ClearInstrume ation Log/C nt Pa al Inf ramete Show ormati rs GLP on Inform ation LOG RCL CFM RANG E Func tions / HI 22 Micro 3 Cal proc ibratio esso n r pH Check Mete r Start Calib ration Selec st t 1 Bu ffer Confi rm 1 st Buffe Selec r t 2 ndBu ffer Confi rm 2 nd Buffe r / CFM CAL pH Ca libratio n RANG E SE CLRT Manufacturer since 1978 1 www.hannainst.com Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its 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. WARRANTY HI 221 and HI 223 are guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrodes and the probes are guaranteed for a period of six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Technical Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. TABLE OF CONTENTS WARRANTY ................................................................................................................... 2 PRELIMINARY EXAMINATION ........................................................................................... 3 GENERAL DESCRIPTION.................................................................................................... 3 FUNCTIONAL DESCRIPTION ............................................................................................. 4 HI 221 SPECIFICATIONS .................................................................................................. 5 HI 223 SPECIFICATIONS ................................................................................................... 6 OPERATIONAL GUIDE ....................................................................................................... 7 pH CALIBRATION ................................................................................................................ 9 ENHANCED CALIBRATION MESSAGES ....................................................................12 ELECTRODE CONDITION AND RESPONSE TIME ............................................................14 GOOD LABORATORY PRACTICE (GLP) .........................................................................15 LOGGING .........................................................................................................................18 SETUP ............................................................................................................................ 22 TEMPERATURE CALIBRATION (FOR TECHNICAL PERSONNEL ONLY) .............................. 25 mV CALIBRATION (FOR TECHNICAL PERSONNEL ONLY) .................................................. 27 PC INTERFACE ............................................................................................................... 28 pH VALUES AT DIFFERENT TEMPERATURES .................................................................... 30 ELECTRODE CONDITIONING & MAINTENANCE .............................................................. 31 TROUBLESHOOTING GUIDE .......................................................................................... 33 TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ............................................34 ACCESSORIES ................................................................................................................ 36 RECOMMENDATIONS FOR USERS ..................................................................................... 39 2 PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any damage, notify your Dealer or the nearest Hanna Customer Service Center. Each instrument is supplied complete with: HI 1131P Glass-body Combination pH Electrode with 1 m (3.3 ) cable HI 7669/2W Temperature Probe HI 76404 Electrode Holder pH 4.01 & 7.01 Buffer Solutions (20 mL each) HI 7071S Electrolyte Solution 12 VDC Power Adapter Instruction Manual Note: Save all packing material until you are sure that the instrument functions correctly. All defective items must be returned in the original packing with the supplied accessories. GENERAL DESCRIPTION HI 221 and HI 223 are logging microprocessor-based pH/ORP/temperature bench meters with Calibration Check. Calibration Check performs a set of diagnostic tests during calibration using the history of electrode slope and offset to detect problems that can cause loss of accuracy. Calibration Check Features are: Enhanced Calibration Messages During calibration the user is warned if one or more parameters are not suitable to perform an accurate calibration. Electrode Condition on LCD Display Determined from the electrode offset and slope. Electrode response time on LCD Display Determined from electrode performance during calibration. Calibration Alarm Time Out Can be programmed from 1 to 7 days or can be disabled. Other features include: One or two point calibration with seven memorized buffers (1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45 pH), logging up to 100 samples (for HI 221) and 500 samples (for HI 223), last calibration date and data (GLP), pH reading with manual or automatic temperature compensation and PC software interface. 3 FUNCTIONAL DESCRIPTION Front Panel Front Panel 1 Electrode Condition Electrode Response Primary LCD Secondary LCD pH POOR GOOD SLOW FAST ATC C 10 2 3 5 7 4 6 CAL Functions RANGE pH Calibration CAL / CFM / CFM Select pH/ORP Store Log Information Recall Log Information Set Instrument Parameters Clear Log/Cal Information Show GLP Information Start Calibration Select 1 Buffer Confirm 1 Buffer Select 2 nd st st CFM GLP 8 RANGE SET CLR LOG RCL SET/CLR Buffer nd 9 C C CFM/GLP Confirm 2 Buffer LOG RCL HI 223 Calibration Check Microprocessor pH Meter Rear Panel Rear Panel POWER 12VDC INPUT TEMP RS232 11 12 13 14 15 1) Liquid Crystal Display (LCD). 2) CFM / GLP key, to confirm different values or to display Good Laboratory Practice information. 3) CAL key, to enter and exit/escape the calibration mode. 4) / ºC key, to manually decrease temperature, or other parameters. 5) / ºC key, to manually increase temperature, or other parameters. 6) RCL key, to enter or exit the recall mode. 7) LOG key, to store measured data. 8) RANGE key, to select the measurement range or to switch the focused data. 9) SET / CLR key, to enter the Setup mode or clear calibration history. 10) ON / OFF switch. 11) Power supply socket. 12) BNC electrode connector. 13) Pin input socket. 14) Temperature probe socket. 15) RS232 serial communication connector. Note: Pin input socket cannot be used as a reference input for electrodes with separate reference. 4 HI 221 SPECIFICATIONS 2.00 to 16.00 pH Range ± 699.9 mV ± 2000 mV 20.0 to 120.0 °C 0.01 pH Resolution 0.1 mV (± 699.9 mV) 1 mV (± 2000 mV) 0.1 °C ± 0.01 pH Accuracy @ 20 °C/68 °F ± 0.2 mV (± 699.9 mV) ± 1 mV (± 2000 mV) ± 0.4 °C Calibration Check Computer Interface pH Calibration Logging Temperature Compensation pH E lectrode Temperature Probe Input Impedance Power Supply D imensions Weight E nvironment Warranty 5 Yes Opto-isolated RS232 1 or 2 point, 7 buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) 100 points Manual or Automatic from: 20 to 120 °C HI 1131P glass body, single junction refillable cell, BNC + pin (included) HI 7669/2W stainless steel probe (included) 1012 9 12 VD C adapter (included) 240 x 182 x 74 mm (9.4 x 7.1 x 2.9") 1.1 kg (2.5 lb) kit with holder 2.5 kg (5.5 lb) 0 - 50 °C (32 - 122 °F) max RH 95 % non condensing 2 years HI 223 SPECIFICATIONS 2.00 to 16.00 pH 2.000 to 16.000 pH Range ± 999.9 mV ± 2000 mV 20.0 to 120.0 °C 0.01 pH 0.001 pH Resolution 0.1 mV (± 999.9 mV) 1 mV (± 2000 mV) 0.1 °C ± 0.01 pH ± 0.002 pH Accuracy @ 20 °C/68 °F ± 0.2 mV (± 699.9 mV) ± 0.5 mV (± 999.9 mV) ± 1 mV (± 2000 mV) ± 0.4 °C Calibration Check Computer Interface pH Calibration Logging Temperature Compensation pH E lectrode Temperature Probe Input Impedance Power Supply D imensions Weight E nvironment Warranty 6 Yes Opto-Isolated RS232 1 or 2 point, 7 buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) 500 points Manual or Automatic from: 20 to 120 °C HI 1131P glass body, single junction refillable cell, BNC + pin (included) HI 7669/2W stainless steel probe (included) 1012 9 12 VD C adapter 240 x 182 x 74 mm (9.4 x 7.1 x 2.9") 1.1 kg (2.5 lb) kit with holder 2.5 kg (5.5 lb) 0 - 50 °C (32 - 122 °F) max RH 95 % non condensing 2 years OPERATIONAL GUIDE POWER CONNECTION Plug the 12 VDC adapter into the power supply socket. Note: These instruments use non volatile memory to retain the pH, mV, temperature calibrations and all other settings, even when unplugged. Note: Make sure a fuse protects the mains line. ELECTRODE AND PROBE CONNECTIONS For HANNA P Type pH or ORP electrodes (with internal reference) connect the electrodes BNC to the socket on the back of the instrument and the pin to the appropriate socket. Note: Electrode condition and response information is displayed on the bar graph gauges during the day the calibration is performed, only if HANNA P type (PIN) electrodes are used. If the electrode is not recognized as a HANNA P type electrode, the bar graph gauges will blink (25 seconds OFF, 4 seconds ON, full bar graph). For temperature measurement and automatic temperature compensation connect the temperature probe to the appropriate socket. INSTRUMENT START-UP Turn the instrument on by pressing the ON/OFF switch. All LCD tags are displayed and a beep is sounded while the instrument performs a self test. CAL DUE CFM Unscrew electrode refilling cap pH LOG RCL DEL mV BUFFER 12 SETUP MTCATC CHECK WRONG BUFFER CONTAMINATED BUFFER CLEAN ELECTRODE POOR GOOD SLOW FAST CLEAR CAL if new electrode The Unscrew electrode refilling cap message reminds the user to loosen or remove the electrode refilling cap to improve the electrodes response time. The instrument automatically defaults to pH measurement mode unless a HANNA P type ORP electrode is detected. pH MEASUREMENT Make sure the instrument has been calibrated before taking pH measurements. Submerge the tip (4 cm/1½) of a properly conditioned electrode (see page 31) and the temperature probe into the sample to be tested. Allow time for the electrode to stabilize. 7 The pH is displayed on the primary LCD and the temperature on the secondary LCD. pH POOR GOOD SLOW FAST ATC C The pH reading is out of range, the closest full-scale value will be displayed blinking on the primary LCD. It is also possible to view the mV reading by pressing the RANGE key. mV POOR GOOD SLOW FAST C If measurements are taken successively in different samples, it is recommended to rinse the electrode thoroughly with deionized water or tap water and then with some of the next sample to prevent cross-contamination. The pH reading is affected by temperature. In order to measure the pH accurately, this temperature effect must be compensated for. To use the Automatic Temperature Compensation feature, connect and submerge the HI 7669/2W temperature probe into the sample as close to the electrode as possible and wait for a few minutes. If the temperature of the sample is known, manual compensation can be performed by disconnecting the temperature probe. The display will then show the default temperature of 25 °C or the last recorded temperature reading with the °C symbol blinking. The temperature can now be adjusted with the ARROW keys (from -20.0 ºC to 120.0 ºC). ATC C MTC C ORP MEASUREMENTS An optional ORP electrode must be used to perform ORP measurements (see Accessories). Oxidation-Reduction Potential (REDOX) measurements provide the quantification of the oxidizing or reducing power of the t ...