Instruction Manual HI 98170 HI 98171 HI 98172 Calibration Check Waterproof pH/mV/ISE/Temperature Meters w w w. h a n n a i n s t .
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.
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 with: • HI 1230B Combination double-junction, gel pH Electrode • HI 7662 stainless steel Temperature Probe with 1 m (3.3') Cable • pH 4.01 & 7.01 Buffer Solutions (20 mL each) • 100 mL Plastic Beaker • 4 x 1.
Moreover, they offer an extended temperature range from –20 ºC to 120 ºC (-4 ºF to 248 ºF), using HI 7662 interchangeable probes. These instruments can also measure with ORP electrodes, thanks to their capability to measure mV with a resolution up to 0.1 mV. HI 98172 can also measure with ISE electrodes on ppm scale.
FUNCTIONAL DESCRIPTION 2 1 3 15 4 14 5 HI 98171 Calibration Check pH/ORP Meter 13 6 ON / OFF RANGE SETUP LIGHT 12 7 CAL GLP MODE AutoEnd CLR 11 8 2nd RCL 9 1) 2) 3) 4) 5) 6) 7) 8) 9) LOG CFM 10 BNC electrode connector. Temperature probe socket. RS232 serial communication connector. Liquid Crystal Display (LCD). RANGE key, to select pH or mV (HI 98171, HI 98172), or ISE (HI 98172). SETUP key, to enter/exit SETUP mode. ON/OFF key, to turn the instrument ON and OFF.
10) 11) 12) 13) 14) 15) key, to manually decrease temperature or other parameters. RCL key, to enter/exit view logged data mode. LOG key, to store measured data. CFM key, to confirm different values. AutoEnd key, to freeze first stable reading on the LCD. CLR key, to clear calibration or logged data. LIGHT key, to toggle display backlighting. Secondary LCD. Primary LCD.
HI 98170 AND HI 98171 SPECIFICATIONS –2.0 to 16.0 pH –2.00 to 16.00 pH RANGE ± 699.9 mV(HI 98171 only) ± 2000 mV(HI 98171 only) –20.0 to 120.0 ºC(–4.0 to 248.0 ºF) 0.1 pH 0.01 pH 0.1 mV(HI 98171 only) 1 mV(HI 98171 only) RESOLUTION 0.1 ºC(0.1 ºF) ± 0.1 pH ± 0.01 pH ACCURACY @ 20 ºC/ 68 ºF ± 0.2 mV(± 699.9 mV) ± 1 mV(± 2000 mV) ± 0.4 ºC(± 0.8 ºF) (excluding probe error) Rel mVoffset range ± 2000 mV(HI 98171 only) pHCalibration Up to five-point calibration, 7 standard buffers available (1.68, 4.01, 6.
HI 98172 SPECIFICATIONS –2.00 to 16.00 pH ± 699.9 mV ± 2000 mV RANG E 0.001 to 19990 ppm –20.0 to 120.0 ºC(–4.0 to 248.0 ºF) 0.01 pH 0.1 mV 1 mV RESOLUTION 0.001 ppm (from 0.001 to 1.999) 0.01 ppm (from 2.00 to 19.99) 0.1 ppm (from 20.0 to 199.9) 1 ppm (from 200 to 1999) 10 ppm (from 2000 to 19990) 0.1 ºC(0.1 ºF) ± 0.01 pH ± 0.2 mV(± 699.9 mV) ± 1 mV(± 2000 mV) AC C URAC Y @ 20 ºC/ 68 ºF ± 0.5% f.s. ± 0.4 ºC(± 0.
OPERATIONAL GUIDE INITIAL PREPARATION The instrument is supplied complete with rechargeable batteries. Remove the back cover, unwrap the batteries and install them, while paying attention to the correct polarity. Proceed with a complete charging process (see page 37). 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.
In order to take more accurate pH measurements, make sure that the instrument is calibrated (see page 12 for details). It is recommended that the electrode is always kept wet and rinsed thoroughly with the sample to be measured before use. The pH reading is directly affected by temperature. In order for the instrument to measure the pH accurately, temperature must be taken into consideration.
The relative mV reading is equal to the difference between the absolute mV input value and relative mV offset established in the relative mV calibration (see page 18). ISE MEASUREMENTS (HI 98172 only) To perform ion concentration measurements, connect an optional ISE electrode to the instrument and turn it ON. If necessary, enter the ISE mode by pressing RANGE until the display changes to ppm.
pH CALIBRATION It is recommended to calibrate the instrument frequently, especially if high accuracy is required. The pH range should be recalibrated: • Whenever the pH electrode is replaced. • At least once a week. • After testing aggressive chemicals. • When calibration alarm time out is expired - “CAL DUE” tags blink (if feature is enabled). • If “Outside Cal Range” message blinks during pH measurement (the measurement range is not covered by current calibration).
• The “ ” tag will blink on the LCD until the reading is stable. • When the reading is stable and close to the selected buffer, “CFM” tag blinks. • Press CFM to confirm calibration. LOG CFM • The calibrated value is then displayed on the primary LCD and the secondary LCD will display the second expected buffer value, together with “CAL” and “Cal Point 2” tags.
• After the fourth calibration point is confirmed, immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into the fifth buffer solution and stir gently. The temperature probe should be close to the pH electrode. • If necessary, press the ARROW keys to select a different buffer value. • The “ ” tag will blink on the LCD until the reading is stable. • When the reading is stable and close to the selected buffer, “CFM” tag blinks. • Press CFM to confirm calibration.
• With one-point calibration there is no “Condition” and only the frame is shown. Calibration time out is active. • Each time a buffer is confirmed, the new calibration parameters replace the old calibration parameters of the corresponding buffer. If current confirmed buffer has no correspondence in the existing stored calibration and this is not full, the current buffer is added to the existing stored calibration.
CONDITION The display is provided with a 5-dot bargraph (unless the feature is disabled) which gives an indication of the electrode status after calibration as follows: Bargraph indication Condition value All 5 dots steady 81 to 100% of life 4 dots steady 61 to 80% 3 dots steady 41 to 60% 2 dots steady 21 to 40% 1 dot steady 1 to 20% 1 dot blinking 0% Only frame is ON No info available The “condition” bargraph remains active until the end of the calibration day.
pH 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 1.68 4.01 6.86 7.01 9.18 10.01 12.45 0 32 1.67 4.01 6.98 7.13 9.46 10.32 13.38 5 41 1.67 4.00 6.95 7.10 9.39 10.24 13.18 10 50 1.67 4.00 6.92 7.07 9.
RELATIVE mV CALIBRATION (HI 98171 & HI 98172) • Press CAL when the instrument is in RELATIVE mV measurement mode. The relative mV value is displayed on the primary LCD and the absolute mV value on the secondary LCD. • Use the ARROW keys if you want to change the displayed relative mV value. RCL MODE • When the reading is stable, in mV range and the Relative mV offset is inside the offset window (±2000 mV), “CFM” tag blinks. • Press CFM to confirm relative mV calibration.
ISE CALIBRATION (HI 98172 only) It is recommended to calibrate the instrument frequently, especially if high accuracy is required. The ppm range should be recalibrated: • Whenever the ISE electrode is replaced. • When the ion charge is changed in SETUP menu. • At least once a week. • After testing agressive chemicals. • When calibration alarm time out is expired - “CAL DUE” tags blink (if feature is enabled). Due to electrode conditioning time, the electrode must be kept immersed a few seconds to stabilize.
• The calibrated value will be displayed on the primary LCD and the second expected standard value on the secondary LCD, together with “CAL” and “Cal Point 2” tags. Note: The instrument will automatically skip the standard solution used for the first point. • After the first calibration point is confirmed, immerse the ISE electrode approximately 4 cm (1½”) into the second calibration solution. • If necessary, press the ARROW keys to select a different standard value.
• When the reading is stable and close to the selected standard, the “CFM” tag blinks. • Press CFM to confirm calibration. The instrument stores the calibration value and returns to normal LOG CFM measurement mode. Notes: • If the new slope is out of slope window or the mV value is out of mV range (±2000), “WRONG” tag will blink. In this case check if the correct standard has been used, or refresh the electrode by following the Cleaning Procedure (see page 43).
GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV or ISE calibration is stored for the user to review when necessary. EXPIRED CALIBRATION The instrument is provided with a real time clock (RTC), in order to monitor the time elapsed since the last pH calibration.
• The pH calibration slope (the GLP slope is the average of the calibration slopes; the percentage is referred to the ideal value of 59.16 mV/pH). • The calibration buffers in calibrating order, for the last calibration. The first pH calibration buffer: The second pH calibration buffer: The third pH calibration buffer: The fourth pH calibration buffer: The fifth pH calibration buffer: Notes: • The “OLd” message displayed beside the pH value means that this buffer was not used during last calibration.
LAST RELATIVE mV CALIBRATION DATA Last Relative mV calibration data is stored automatically after a successful calibration. To view the Relative mV calibration data, press 2nd then GLP while in Relative mV measurement mode. The instrument will display the Relative mV GLP information. • The time (hh:mm:ss) of the last Rel mV calibration as in pH GLP mode. Press the ARROW keys to view the next calibration parameter (pressing the key): • The Relative mV calibration date as in pH GLP mode.
The fourth calibration standard: The fifth calibration standard: Notes: • The “OLd” message displayed beside the ppm value means that this standard was not used during last calibration. Press 2nd then SETUP if you want to see calibration date (or time, if old calibration was performed in the same day with current calibration). In this case, the calibration standard number is not displayed on the LCD.
If there is another item to be set (e.g. minutes), press 2nd then MODE. The other item will start blinking. Press the ARROW keys to change the displayed value. Press CFM to confirm or CAL to escape. Press the ARROW keys to select the next/previous parameter. Press 2nd then SETUP to exit SETUP menu at any time.
LOGGING This feature allows the user to log pH, Rel mV or ISE measurements, together with corresponding mV and temperature automatically. All logged data can be transferred to a PC through the RS232 port. The maximum logging space is 150 record locations (50 records on each range). LOGGING THE CURRENT DATA To store the current reading into memory, press LOG while in measurement mode. LOG CFM The instrument will display the current date (mm.
• If RCL mode was invoked while the instrument was in ISE range: the last ppm memorized reading on the primary LCD and the record number on the secondary LCD. Press 2nd then SETUP while in RECALL mode and the instrument will toggle between the record number on the secondary LCD and the current displayed information. Use the ARROW keys to select another record.
A utoEnd To freeze the first stable reading on the LCD press AutoEnd while the instrument is in measurement mode. AutoEnd CLR The ”HOLD” tag will be displayed blinking on the LCD until the reading will stabilize. When the reading is stable, the “HOLD” tag stops blinking and the reading is frozen on the LCD. Press AutoEnd again to return to normal measurement mode. Note: Pressing 2nd then MODE the instrument will skip to the displayed range, without leaving AutoEnd mode.
TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna’s temperature probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center, or follow the instructions below.
Note: If the reading is not close to the selected calibration point, “WRONG” tag will blink. Change the temperature probe and restart calibration. mV CALIBRATION (for technical personnel only) All the instruments are factory calibrated for mV. Hanna’s ORP electrodes are interchangeable and no mV calibration is needed when they are replaced. If the mV measurements are inaccurate, mV recalibration should be performed.
PC INTERFACE Data transmission from the instrument to the PC can be done with the HI 92000 Windows® compatible software (optional). HI 92000 also offers graphing and on-line help feature. Data can be exported to the most popular spreadsheet programs for further analysis. To connect your instrument to a PC, use the optional Hanna HI 920011 (5 to 9 pin) cable connector.
CHR xx Change the instrument range according with the parameter value (xx): • xx=01 pH range/0.01 resolution • xx=02 pH range/0.
MDR GLP • 0x10 - temperature probe is connected • 0x01 - new GLP data available • 0x02 - new SETUP parameter • Reading status (2 chars): R - in range, O - over range, U under range. First character corresponds to the appropriate range reading. Second character corresponds to mV reading. • Primary reading (corresponding to the selected range) 7 ASCII chars, including sign and decimal point. • Secondary reading (only when primary reading is not mV) - 7 ASCII chars, including sign and decimal point.
PAR NSLx LODPxxx LODMxxx LODIxxx LODPALL LODMALL • the calibration time, yymmddhhmmss (12 chars). • ISE calibration data (if available), which contains: • the number of calibrated standards (1 char) • the ion charge, with sign (2 chars) • the calibration slope, with sign and decimal point (7 chars) • the calibration time, yymmddhhmmss (12 chars) • standards information (for each standard) • type (1 char): 0 - always standard solution.
LODIALL Requests all ISE Log on demand (HI 98172). The answer string for each record contains: • The logged mode (2 chars): • 01 - pH range (0.01 resolution) • 02 - pH range (0.
BATTERIES RECHARGING/REPLACEMENT It is recommended to recharge the rechargeable batteries as soon as you finish your work with the instrument or as soon as the battery indicator does not show full scale. If the batteries become weak, the display will flash the battery symbol to advise the user that approx. 1 hour of working time is left. It is recommended to recharge the batteries soon. To replace the rechargeable batteries, follow the next steps: • Turn OFF the instrument.
• The complete charging process takes about 30 hours. Notes: • As the charging process is performed at low current, the instrument can be left on the recharger more than 30 hours, without damaging the rechargeable batteries. • It is recommended to turn off the instrument while recharging the batteries. The measurements can be affected by the recharging process. The capacity of the battery displayed after power on is also affected.
LCD MESSAGE GUIDE TAGS & SYMBOLS temperature compensation mode pH, mV, Rel mV or ppm measurement mode tags instability indicator battery symbol calibration messages condition bargraph second function enabled calibration messages temperature reading or pH buffer value arrow keys custom buffers active active calibration messages • Mode tags light up for indicating the corresponding active mode, and blink for warning the user. SETUP on: SETUP menu mode has been entered.
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 ºC (77 ºF). Since the resistance of the pH electrode is in the range of 50 – 200 Mohm, the current across the membrane is in the pico Ampere range.
ELECTRODE CONDITIONING & MAINTENANCE Not present in gel electrodes. 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. The electrode cannot function properly under these conditions. These bubbles can be removed by "shaking down" the electrode as you would do with a glass thermometer.
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. For faster response, unscrew the fill hole screw during measurements. For AmpHel ® electrodes: If the electrode does not respond to pH changes, the battery run down and the electrode should be replaced.
pH CLEANING PROCEDURE • General Soak in Hanna HI 7061 or HI 8061 General Cleaning Solution for approximately ½ hour. • Protein Soak in Hanna HI 7073 or HI 8073 Protein Cleaning Solution for 15 minutes. • Inorganic Soak in Hanna HI 7074 Inorganic Cleaning Solution for 15 minutes. • Oil/grease Rinse with Hanna HI 7077 or HI 8077 Oil and Fat Cleaning Solution.
TROUBLESHOOTING GUIDE SYMPTOMS PROBLEM SOLUTION Slowresponse/excessive drift. Dirty pHelectrode. Soak theelectrodetip in HI 7061 solution for 30 minutesand then follow theC leaning Procedure. Reading fluctuates up and down (noise). C logged/dirty junction. Lowelectrolyte level (refillable electrodes only). C lean the electrode. Refill with fresh electrolyte (refillable electrodes only). Display shows blinking full scale value. Reading out of range.
ACCESSORIES pH CALIBRATION SOLUTIONS HI 50004-01 pH 4.01 Buffer Solution, 20 mL sachet, 10 pcs HI 50004-02 pH 7.01 Buffer Solution, 20 mL sachet, 25 pcs HI 50007-01 pH 10.01 Buffer Solution, 20 mL sachet, 10 pcs HI 50007-02 pH 4.01 Buffer Solution, 20 mL sachet, 25 pcs HI 50010-01 pH 7.01 Buffer Solution, 20 mL sachet, 10 pcs HI 50010-02 pH 10.01 Buffer Solution, 20 mL sachet, 25 pcs HI 5016 pH 1.68 Buffer Solution, 500 mL bottle HI 5004 pH 4.01 Buffer Solution, 500 mL bottle HI 5068 pH 6.
HI 8082 3.
HI 1131B Glass-body, single junction, refillable, combination pH electrode. Use: general purpose. 9.5mm DIA 0.37" 12 mm 0.5" HI 1131 120 mm 4.7" "S" VERSION HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. 5mm DIA 0.2" 5mm 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 0.3" 7.5mm DIA 0.29" HI 1331 210 mm 8.
HI 1332B Plastic-body (PEI®), double junction, refillable, combination pH electrode. Use: general purpose. 12 mm 0.5" HI 1332 "S" VERSION 120 mm 4.7" 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.
FC 911B Plastic-body (PVDF®), double junction, refillable with built-in amplifier, 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, 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 "S" VERSION 150 mm 5.
EXTENSION CABLE FOR SCREW-TYPE ELECTRODES (SCREW TO BNC ADAPTER) HI 7855/1 Extension cable 1 m (3.3') long HI 7855/3 Extension cable 3 m (9.9') long HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3.0 mm (0.
RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences. The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges. Avoid touching this glass bulb at all times.
SALES AND TECHNICAL SERVICE CONTACTS 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. (210) 4584.2941 • Fax (210) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
