Related Manuals for Hanna Instruments HI 222
Summary of Contents for Hanna Instruments HI 222
- Page 1 Instruction Manual HI 222 pH/mV/ºC Bench Meter with Calibration Check www.hannainst.com Manufacturer since 1978...
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Page 2: Table Of Contents
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 Authori- zation number from the Technical Service department and then send it with shipping costs prepaid. -
Page 3: Preliminary Examination
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: •... -
Page 4: Functional Description
FUNCTIONAL DESCRIPTION Electrode Electrode Front Panel Primary LCD Response Condition Secondary LCD POOR GOOD SLOW FAST Functions pH Calibration RANGE Select pH/ORP Start Calibration RANGE Store Log Information Select 1 Buffer Recall Log Information Confirm 1 Buffer Set Instrument Parameters SET/CLR Select 2 Buffer... -
Page 5: Hi222 Specifications
HI222 SPECIFICATIONS Range -2.00 to 16.00 pH ±699.9 mV / ±2000 mV -20.0 to 120.0 °C Resolution 0.01 pH 0.1 mV / 1 mV 0.1 °C Accuracy ±0.01 pH (@20°C/68°F) ±0.2 mV / ±1 mV ±0.5 °C pH Calibration 1 or 2-point, automatic, with 7 memorized pH buffer values (1.68, 3.00, 6.86, 7.01, 9.18, 10.01, 12.45) Temperature Compensation Automatic or manual, from -20 to 120°C... -
Page 6: Operational Guide
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 electrode’s BNC to the socket on the back of the instrument and the pin to the... - Page 7 • The pH is displayed on the primary LCD and the temperature on the secondary LCD. POOR GOOD SLOW FAST • The pH reading is out of range, the closest full-scale value will be displayed blinking on the primary LCD. •...
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Page 8: Ph Calibration
• The instrument automatically defaults to the ORP measurement mode if HANNA P type ORP electrode is detected. • Submerge the ORP electrode tip (4 cm/1½”) into the sample. Allow a few minutes for the reading to sta- bilize. • The instrument displays the mV reading on the primary LCD. •... - Page 9 PROCEDURE The user has a choice of 7 memorized buffers: pH 1.68, 3.00, 6.86, 7.01, 9.18, 10.01 and 12.45. It is always recommended to perform a two-point calibration. The instrument however allows a one-point calibration, as described on page 10. TWO-POINT CALIBRATION For most applications it is recommended that pH 7.01 or 6.86 buffers to be used as the first calibration point and pH 3.00 (for acidic samples) or pH...
- Page 10 • Press the ARROW keys to select a different buffer value, if necessary. • When the reading is stable and close to the selected buffer, the “CFM” tag will blink and if enabled, an audible signal will sound. BUFFER 1 •...
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Page 11: Enhanced Calibration Messages
ENHANCED CALIBRATION MESSAGES The stored calibration history to used issue error and warning messages during calibration to help ensure the highest accuracy. As electrode aging is normally a slow process, substantial changes from previous calibrations are likely due to a temporary problem with the electrode or buffers. - Page 12 ELECTRODE This message appears if the cleaning procedure performed as a result of the above two messages is found by the instrument to be unsuccessful. Replace the electrode. BUFFER 1 ELECTRODE WRONG BUFFER TEMPERATURE This message appears if the temperature of the buffer is outside the defined buffer temperature range.
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Page 13: Electrode Condition And Response Time
a result of unacceptable offset variation or in the second calibration buffer as a result of unacceptable slope variation. This variation may result from dirt on the electrode or contaminated buffer. Refer to the electrode cleaning procedure or use fresh buffer. BUFFER 1 CHECK BUFFER... -
Page 14: Good Laboratory Practice (Glp)
Also, when the instrument cannot evaluate the electrode response or pH 1.68 or pH 12.45 buffer were used as calibration buffer, the response gauge will be empty. If the electrode is in a very poor condition the first condition segment will blink. If electrode response is very slow the first response segment will blink. - Page 15 • The date (mm.dd). • The year (yyyy). • The pH calibration offset. • The pH calibration slope in mV/pH normalized to 25 °C. Note: If you calibrate using electrodes with pin the electrode condition and re- sponse gauges appear while the offset and slope are displayed. •...
- Page 16 • The calibration Alarm Time-Out status: if disabled or the number of days until the calibration alarm will be displayed or if expired (7 days ago) Press the GLP key at any time and the instrument will return to measuring mode. If calibration has not been performed, the instrument displays “no CAL”...
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Page 17: Logging
L O G G I N G Up to 100 LOG samples can be stored in memory. LOGGING THE CURRENT DATA To store the current reading into memory press the LOG key while in measur- ing mode. The instrument will display the current date (mm.dd) on the primary LCD, the record number on the secondary LCD and the “LOG”... - Page 18 Otherwise the instrument will display log data on the primary LCD and the last stored record number on the secondary LCD, along with the “LOG” and the “RCL” tags. Note: The “LOG” and “RCL” tags remain on LCD while instrument is in the viewing logged data mode.
- Page 19 •The date on the primary LCD and the “dAtE” message on the secondary LCD. •The year on the primary LCD and the “YEAr” message on the secondary LCD. •The calibration offset on the primary LCD and the “oFFS” message on the secondary LCD.
- Page 20 •The “dEL” message on the primary LCD and the selected record or date on the secondary LCD. The “CFM” and the ”DEL” tags will blink: Press SET key to select the current record, the records from the selected date or all records to be deleted.
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Page 21: Setup
SETUP Setup mode allows viewing and modification of the following parameters: • Calibration Alarm Time Out • Instrument ID • Current Time (hour & minute) • Current Date (month & day) • Current Year • Beep Status • Baud Rate (serial communication) •... - Page 22 Press the ARROW keys to change the instrument ID value. Press the CFM key to save the modified instrument ID value or press the CAL key to cancel without saving the instrument ID. Note: The instrument ID is downloaded to a PC as part of a logged data set to identify it’s origin.
- Page 23 CURRENT YEAR SET Press the CAL key when the current year is displayed. The year will begin blinking. Press the ARROW keys to change the year. Press the CFM key to save the modified value or press the CAL key to cancel without saving the year.
- Page 24 SERIAL COMMUNICATION BAUD RATE SET Press the CAL key when the baud rate is displayed. The baud rate (600, 1200, 2400, 4800 or 9600) will begin to blink. Press the ARROW keys to change the baud rate. Press the CFM key to save the modified baud rate or press the CAL key to cancel without saving the baud rate.
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Page 25: Temperature Calibration (For Technical Personnel Only)
TEMPERATURE CALIBRATION (for technical personnel only ) The instruments are factory calibrated for temperature. Hanna’s temperature probes are interchangeable and temperature calibra- tion is not necessary when replaced. If the temperature measurements are not accurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center, or follow the instructions below. - Page 26 • The “ ” tag will blink until the reading has stabilized. • Use the ARROW keys to set the reading on the secondary LCD to that of the hot water bath. • When the reading is stable and close to the selected calibration point, the “CFM”...
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Page 27: Mv Calibration (For Technical Personnel Only)
mV CALIBRATION (for technical personnel only) All instruments are factory calibrated for mV. Hanna’s pH and ORP electrodes are interchangeable and mV calibration is not needed when replaced. If mV measurements are not accurate, mV recalibration should be carried out. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center or follow the instructions below. -
Page 28: Pc Interface
Note: Press the CAL key to leave the calibration mode at any time. If the measured value is not close to the calibration point, the “WRONG“ tag will start to blink. In this case, check if the value set on the simulator is the same as the calibration value on the instrument. - Page 29 SIMPLE COMMANDS Is equivalent to pressing the RANGE key Is equivalent to pressing the CAL key Is equivalent to pressing the CFM/GLP key Is equivalent to pressing the UP arrow key Is equivalent to pressing the DOWN arrow key Is equivalent to pressing the SET/CLR key COMMANDS REQUIRING AN ANSWER Causes the instrument to send the pH reading (“Err 1”...
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Page 30: Ph Values At Different Temperatures
pH VALUES AT DIFFERENT 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 instrument will automatically calibrate to the pH value corre- sponding to the measured or set temperature. T E M P p H V A L U º... -
Page 31: Electrode Conditioning & Maintenance
ELECTRODE CONDITIONING & MAINTENANCE PREPARATION Remove the protective cap. DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal with electrodes. 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 32 For Refillable Electrodes: If the filling solution (electrolyte) is more than 2½ cm (1") below the fill hole, add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for double junction or HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte Solution for single junction electrodes using a plastic refilling pipette (HI 740157).
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Page 33: Troubleshooting Guide
IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thoroughly with distilled water, refill the reference chamber with fresh electrolyte (not necessary for gel-filled electrodes) and soak the electrode in HI 70300 or HI 80300 Storage Solution for at least 1 hour before taking measurements. TROUBLESHOOTING GUIDE Symptoms Problem... - Page 34 Symptoms Problem Solution AmpHel electrodes do The battery is run down. Replace the electrode. not respond to pH changes. The meter fails to cali- Broken pH electrode. Replace the pH electrode. brate or gives faulty readings. At start-up the LCD dis- One of the keys is Check the keyboard or con- play all segments per-...
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Page 35: Temperature Correlation For Ph Sensitive Glass
TEMPERATURE CORRELATION FOR pH 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. -
Page 36: Accessories
ACCESSORIES pH CALIBRATION SOLUTIONS HI 50003P pH 3.00 Buffer Solution, 20 mL sachet, 25 pcs 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 7001M pH 1.68 Buffer Solution, 230 mL bottle HI 5003 pH 3.00 Buffer Solution, 500 mL bottle... - Page 37 REFILLING ELECTROLYTE SOLUTIONS HI 7071 3.5M KCl + AgCl Electrolyte, 4x30 mL, for single junction electrodes HI 7072 1M KNO Electrolyte, 4x30 mL HI 7082 3.5M KCl Electrolyte, 4x30 mL, for double junction electrodes HI 8071 3.5M KCl + AgCl Electrolyte in FDA approved bottle, 4x30 mL, for single junction electrodes HI 8072 1M KNO...
- Page 38 HI 1131P; Use: general purpose. Glass-body, single junction, refillable, combination pH electrode. 9.5mm DIA 12 mm 0.37" 0.5" HI 1131 120 mm 4.7" "S" VERSION HI 1083P; Use: biotechnology, micro titration. Glass-body, micro, Viscolene, nonrefillable, combination pH electrode 12 mm 5 mm 3 mm 0.5"...
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Page 39: Recommendations For Users
To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damage 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 40 HANNA SALES AND TECHNICAL SERVICE Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: 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.