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Hanna Instruments Pool Line HI981914 Instruction Manual Download Page 35

35

TEMPERA

TURE CORRELA

TION FOR pH SENSITIVE GLASS

10.  TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS

• The resistance of glass electrodes partially depends on the temperature. The lower the temperature, 

the higher the resistance. The higher the resistance, the longer the time required for the reading to 
stabilize. The response time is affected by temperatures below 25 °C (77 °F).

Since the resistance of the pH electrode is in the range of 50 – 200 MΩ, the current across the 

membrane is in the pico Ampere range. Large currents can disturb the calibration of the electrode 
for many hours.

• High humidity environments, short circuits and static discharges are detrimental to a stable pH 

reading.
If constantly used at high temperatures, the electrode life is drastically reduced.

Typical Electrode Life

Ambient temperature  1 – 3 years
90 °C (194 °F) 

less than 4 months

120 °C (248 °F) 

less than 1 month

Alkaline Error

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 
called alkaline error and causes the pH to be underestimated. Hanna Instruments’s glass formulations 
have the indicated characteristics.

Summary of Contents for Pool Line HI981914

Page 1: ...INSTRUCTION MANUAL HI981914 Professional Waterproof Portable pH ORP ISE Meter ...

Page 2: ...anna Instruments product Please read this instruction manual carefully before using this instrument This manual will provide you with the necessary information for correct use of this 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 view our worldwide contact list at www hannainst com Dear Cus...

Page 3: ...CREENS 16 8 2 PROBE SPECIFIC PARAMETERS 20 9 CALIBRATION 23 9 1 pH CALIBRATION 23 9 2 pH BUFFER TEMPERATURE DEPENDENCE 30 9 3 RELATIVE mV CALIBRATION 31 9 4 ISE CALIBRATION 31 10 TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS 35 11 mV TEMPERATURE CALIBRATION for technical personnel only 36 12 MEASUREMENT 38 12 1 pH MEASUREMENT 38 12 2 ORP MEASUREMENT 39 12 3 RELATIVE mV MEASUREMENT 39 12 4 ISE MEA...

Page 4: ...OF CONTENTS 15 PC CONNECTION 43 15 1 HI92000 HANNA PC SOFTWARE 43 15 2 REMOTE CONNECTION VIA USB CABLE 43 16 TROUBLESHOOTING GUIDE 48 17 ACCESSORIES 49 CERTIFICATION 53 RECOMMENDATIONS FOR USERS 53 WARRANTY 54 ...

Page 5: ...ied with HI72911B pH electrode with built in temperature sensor HI7662 Temperature probe pH 4 01 7 01 buffer solutions 230 mL each HI7006014 General purpose cleaning solution 3 pcs 100 mL plastic beaker 2 pcs 1 5V AA batteries 4 pcs HI920015 Micro USB cable Instrument quality certificate Instruction manual Note Save all packing material until you are sure that the instrument works correctly Any da...

Page 6: ...rds pH 1 68 4 01 6 86 7 01 9 18 10 01 12 45 and five custom buffers Slope Calibration From 80 to 110 ISE Calibration Up to five point calibration points using six standard solutions 0 1 1 10 100 1000 10000 ppm Temperature Compensation Manual or Automatic from 20 0 to 120 0 C 4 0 to 248 0 F pH Electrode HI72911B pH temperature Logging Memory 300 records log on demand 100 records per range Input Imp...

Page 7: ... Junction PTFE Electrolyte Polymer Maximum Pressure 3 0 bar Operating Temperature 0 to 80 C 32 to 176 F Body Material Titanium Glass Type GP General Purpose Tip Shape Flat Body Length Overall Length 110 mm 150 5 mm Temperature Sensor Yes Outer Diameter 14 mm Cable Coaxial 1 m 3 3 long Connector Type BNC phono ...

Page 8: ...alibration up to five calibration points Custom calibration with up to five custom buffers Messages on the graphic LCD for an easy and accurate calibration CAL Check diagnostic features to alert the user when the electrode needs cleaning Optional user enabled Outside Calibration Range warning Monitoring of electrode condition User selectable Calibration Time Out Temperature range from 20 to 120 C ...

Page 9: ...LP key press to display stored calibration data 7 CAL key press to enter or exit calibration mode 8 SETUP key press to enter or exit setup mode 9 RCL key press to enter or exit view logged data 10 MODE key press to change pH resolution or to toggle between mV and Rel mV mode 11 RANGE key press to switch between pH mV and ISE range 12 HELP key press to display the context sensitive help menu 13 ESC...

Page 10: ...10 FUNCTIONAL DESCRIPTION Top View 1 Input for temperature probe 2 USB connector 3 BNC electrode connector 4 Input for reference electrode ...

Page 11: ...olyte is more than 2 1 2 cm 1 below the fill hole add HI7082 or HI8082 3 5M KCl Electrolyte Solution double junction or HI7071 or HI8071 3 5M KCl AgCl Electrolyte Solution single junction electrodes For faster response unscrew the fill hole screw during measurements AmpHel electrodes If the electrode does not respond to pH changes the battery is depleted and the electrode should be replaced Genera...

Page 12: ... cleaning solution for 15 minutes Oil or grease cleaning rinse with HI70774 or HI8077 Oil and Fat Cleaning Solution 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 HI703004 or HI80300 Storage Solution for at least 1 hour...

Page 13: ...t four new 1 5V AA batteries in the battery compartment while paying attention to the correct polarity Close the battery compartment using the four screws If the battery capacity is less than 20 the serial communication and the backlight feature are not available Note The instrument is provided with the BEPS Battery Error Prevention System feature which automatically turns the instrument off when ...

Page 14: ...probe is used in conjunction with the pH electrode to utilize the instrument s ATC capability but it can also be used independently to take temperature measurements If the probe is disconnected temperature can be set manually with the keys 7 3 TURNING THE METER ON Turn the instrument ON by pressing ON OFF key At start up the display will show the Hanna Instruments logo for a few seconds followed b...

Page 15: ...led 5 10 30 60 min 30 Date Time day month year 00 00 to 23 59 current date time Time Format AM PM or 24 hours 24 hours Date Format DD MM YYYY MM DD YYYY YYYY MM DD YYYY MM DD Mon DD YYYY DD Mon YYYY YYYY Mon DD YYYY MM DD Language Message display language Up to four languages English Temperature unit C or F C Beep ON Beeper Status Enabled or Disabled Disabled Instrument ID Instrument Identificatio...

Page 16: ...ew calibration points pH Display calibration points Enable or disabled Enable Out of Cal Range Warning Enable or disabled Enable ISE probe Type of ISE probe Custom or Standard 17 Fluoride ISE unit User ppt g L ppm mg L ppb µg L mg mL M mol L mmol L W V ppm 8 1 GENERAL PARAMETER SCREENS Backlight Option 0 to 7 This function allows the adjustment of the LCD backlight intensity With item selected pre...

Page 17: ... off time With item selected press the functional key to select desired option Auto Power Off Option 1 5 10 30 minutes or disabled This function allows modifying the automatic power off time With item selected press Modify functional key Press the keys to select desired option Press Accept to save or ESC key to return to the Meter Setup menu Date Time Option YYYY MM DD Hours Minutes Seconds With i...

Page 18: ...ess the keys to select desired option Press Accept to save or ESC key to return to the Meter Setup menu Language Option English Italiano Español Portugues With item selected press the functional key to select desired option If one of the options can not be selected the instrument works in safe mode whereby all messages are displayed in English and Help is not available Temperature Unit Option C or...

Page 19: ...lected press Modify functional key Press the keys to modify the value Press Accept to save or ESC key to return to the Meter Setup menu Baud Rate Option 600 1200 2400 4800 or 9600 With item selected press Modify functional key Press the keys to select desired option Press Accept to save or ESC key to return to the Meter Setup menu Meter Information With item selected press Select functional key Th...

Page 20: ...ed option With Replace the slopes between current buffer and nearest lower and higher buffers will be reevaluated With Offset an electrode offset correction is performed keeping unchanged the existing slopes Custom Buffers Option None 1 to 5 With item selected press Modify functional key Press Add to add a custom buffer to the list maximum 5 With a buffer highlighted press Modify to edit custom bu...

Page 21: ...select desired option If enabled when the pH reading is outside the calibration range the Out Cal Range message is displayed ISE Probe Option 17 standard ISE probes or custom Press Standard functional key to select desired probe from the standard probes list Press Custom functional key to set the parameters for a custom probe If Standard is pressed press the keys to select desired probe Press Acce...

Page 22: ... ESC key to return to the previous screen When Molar Weight is chosen press Modify to change the value Press the keys Press Accept to confirm or press ESC key to return to the previous screen ISE Unit Option ppt g L ppm mg L ppb µg L mg mL M mol L mmol L W V or User With item selected press Modify functional key Press the keys to select desired option Press Accept to save or ESC key to return to t...

Page 23: ...ring calibration Custom functional key is displayed Press Custom to enter custom buffer edit mode Press keys to modify the value in a 1 00 pH window accordingtothetemperaturereadingandthenpressAccept PressESCtoexitwithoutchanging For accurate pH measurements a five point calibration is recommended a minimum of a two point calibration is suggested The instrument will automatically skip the buffers ...

Page 24: ...rode and the temperature probe approximately 4 cm 1 into the second buffer solution and stir gently If necessary press the keys to select a different buffer value The tag is displayed blinking until the reading has stabilized When the reading is stable and within range of the selected buffer the CFM functional key is displayed 5 Press CFM to confirm the calibration point The instrument displays th...

Page 25: ... pH electrode and the temperature probe approximately 4 cm 1 into the fourth buffer solution and stir gently If necessary press the keys to select a different buffer value The tag is displayed blinking until the reading has stabilized When the reading is stable and within range of the selected buffer the CFM functional key is displayed 9 Press CFM to confirm the calibration point The instrument di...

Page 26: ...int Calibration Two selectable options are available for one point calibration Replace and Offset see METER SETUP section for details 1 Follow the steps described in Five Point Calibration procedure 2 Press CAL or ESC after first calibration point is confirmed The instrument saves the calibration point and returns to measurement mode Notes Press MTC or MODE key to toggle between pH buffer selectio...

Page 27: ...ers and proceed with the calibration from the current point The instrument stores the values confirmed during current calibration Note For one point calibration the electrode condition is not displayed in the measurement screen Each time a buffer is confirmed the new calibration parameters replace the old calibration parameters of the corresponding buffer If the current confirmed buffer has no cor...

Page 28: ...new calibration Note If there is no calibration data the comparison is done with the default values Working with Custom Buffers Custom buffers are set at the value of 25 C When calibrating with custom buffers the buffer value can be modified by pressing Custom Press the keys to change the buffer value 1 00 pH based on the temperature reading Press Accept to save the value or press the ESC key to r...

Page 29: ...g current calibration are not deleted Note If Clear calibration is invoked during the first calibration point the instrument returns to measurement mode Electrode Condition If enabled see METER SETUP section the display will show the probe icon and electrode condition after a successful calibration The electrode condition is evaluated only if current calibration includes at least two standard buff...

Page 30: ...0 68 1 68 4 00 6 88 7 03 9 22 10 06 12 62 25 77 1 68 4 01 6 86 7 01 9 18 10 01 12 45 30 86 1 68 4 02 6 85 7 00 9 14 9 96 12 29 35 95 1 69 4 03 6 84 6 99 9 11 9 92 12 13 40 104 1 69 4 04 6 84 6 98 9 07 9 88 11 98 45 113 1 70 4 05 6 83 6 98 9 04 9 85 11 83 50 122 1 71 4 06 6 83 6 98 9 01 9 82 11 70 55 131 1 72 4 08 6 84 6 98 8 99 9 79 11 57 60 140 1 72 4 09 6 84 6 98 8 97 9 77 11 44 65 149 1 73 4 11...

Page 31: ...e mV reading is out of range or the Relative mV offset is out of the offset window Wrong relative offset message is displayed Change the input value or the Relative mV value to complete the calibration process 9 4 ISE CALIBRATION It is recommended to calibrate the instrument frequently especially if high accuracy is required The ISE range should be recalibrated whenever the ISE probe or ion charge...

Page 32: ...or calibration There are six memorized standard solutions 0 1 1 10 100 1000 10000 ppm and up to five point calibration can be performed For fluoride electrode the 2 ppm standard is also available Remove the protective cap from the ISE electrode Five Point Calibration 1 Immerse the ISE electrode approximately 4 cm 1 into the less concentrated standard solution and stir gently 2 Press CAL The LCD di...

Page 33: ...he third calibration point is confirmed immerse the ISE electrode approximately 4 cm 1 into the fourth calibration solution If necessary press the keys to select a different standard value The tag is displayed blinking until the reading has stabilized When the reading is stable and within range of the selected standard the CFM functional key is displayed 9 Press CFM to confirm calibration The inst...

Page 34: ... inconsistency between new and previous old calibrations is detected Clear old calibration parameters and proceed calibration from the current point Values confirmed during current calibration will not be cleared The instrument displays if is not calibrated or after all calibrations have been cleared If Clear is pressed during the first calibration point the instrument returns to measurement mode ...

Page 35: ...nts can disturb the calibration of the electrode for many hours High humidity environments short circuits and static discharges are detrimental to a stable pH reading If constantly used at high temperatures the electrode life is drastically reduced Typical Electrode Life Ambient temperature 1 3 years 90 C 194 F less than 4 months 120 C 248 F less than 1 month Alkaline Error High concentrations of ...

Page 36: ...tion 1 Prepareavesselcontainingiceandwaterandanotheronecontaininghotwater atapproximately 50 Cor122 F Placeinsulationmaterialaroundthevesselstominimizetemperaturechanges 2 Use a calibrated thermometer with a resolution of 0 1 C as a reference thermometer Connect the temperature probe to the appropriate socket 3 Immerse the temperature probe or the pH probe including temperature sensor into the ves...

Page 37: ...calibration can be performed at 0 mV and 1800 mV 1 Attach to the BNC connector a mV simulator with an accuracy of 0 1 mV 2 Enter the calibration screen Press mV functional key 3 Set 0 0 mV on the simulator 4 When the reading is stable and within range of the selected calibration point press displayed CFM functional key to confirm 5 Press CFM to confirm The second calibration point of 1800 mV will ...

Page 38: ...ally changed using keys electrode condition on calibration day buffers used for previous calibration if enabled battery level indicator available functional keys For accurate pH measurements make sure that the instrument is calibrated see pH CALIBRATION section for details It is recommended that the electrode is always kept moist and rinsed thoroughly with the sample to be measured before use The ...

Page 39: ...ey until mV range is displayed if necessary 3 Submerge the ORP electrode tip 4 cm 1 into the sample to be tested and wait a few seconds for the reading to stabilize Measurements are displayed with 0 1 mV resolution TemperaturecompensationstatusisturnedoffbecausemVreadingsarenottemperaturecompensated For accurate ORP measurements the surface of the electrode must be clean and smooth Pretreatment so...

Page 40: ...ts make sure that the appropriate ISE electrode type and ISE unit are configured in SETUP menu and the instrument is calibrated see ISE CALIBRATION section for details Notes When the reading is out of range the display will flash the closest full scale value The instrument will display on the primary LCD if it is not calibrated A miniumum of one point calibration is required prior to taking any IS...

Page 41: ...ss GLP key The instrument displays calibration buffer offset slope electrode condition Note Buffers displayed in reverse video are from previous calibrations The custom buffers are marked with a symbol No user calibration message is displayed if all calibrations are cleared or the instrument was not calibrated in the pH range Last Relative mV Calibration Data When in Relative mV measurement mode p...

Page 42: ...o scroll logged data Press Delete All to delete all data Press CFM functional key to confirm or ESC key to exit without deleting Press Delete to enter Delete Record screen Press the keys to select desired record and press CFM key to delete Press ESC to exit without deleting Press More to view information on selected record Press the keys to scroll log information 14 3 AUTOEND From measurement mode...

Page 43: ...N 1 no flow control Command Types To send a command to the instrument follow the next scheme command prefix command CR where command prefix is the 16 ASCII character command is the command code Note Either small or capital letters can be used Simple Commands KF1 Is equivalent to pressing functional key 1 KF2 Is equivalent to pressing functional key 2 KF3 Is equivalent to pressing functional key 3 ...

Page 44: ...ages are with ASCII characters RAS Causestheinstrumenttosendacompletesetofreadingsinaccordingwiththecurrentrange pH temperature and mV reading on pH range Rel mV absolute mV and temperature reading on Rel mV range concentration mV and temperature reading on ppm range The answer string contains Meter mode 2 chars 00 pH range 0 001 resolution 01 pH range 0 01 resolution 02 pH range 0 1 resolution 03...

Page 45: ...al point 7 chars the average of slopes with sign and decimal point 7 chars the calibration time yymmddhhmmss 12 chars buffers information for each buffer type 1 char 0 standard 1 custom status 1 char N new calibrated in last calibration O old from an old calibration warnings during calibration 2 chars 00 no warning 04 Clean Electrode warning buffer value with sign and decimal point and exponent 11...

Page 46: ...Auto Light Off time 3 chars Auto Power Off time 3 chars The number of custom buffers 1 char The custom buffer values with sign and decimal point for each defined custom buffer 7 chars The ID of the ISE electrode 2 chars if ISE available The molar weight of the selected ION with sign and decimal point 9 ASCII characters The ion charge 2 chars The ISE unit 2 chars The short name of the selected lang...

Page 47: ...ars mV reading status 1 char R O U The mV reading with sign and decimal point 7 chars The logged time yymmddhhmmss 12 chars The calibration slope with sign and decimal point 7 chars not available for Rel mV range The calibration offset with sign and decimal point 7 chars not available for ISE Temperature probe presence 1 char Notes Err8 is sent if the instrument is not in measurement mode Err6 is ...

Page 48: ...r check the connection Display shows Clean electrode blinking Difference between new and previous calibration has been detected Clean electrode and recalibrate If the problem remains check the buffer solutions Meter does not work with temperature probe Broken temperature probe Replace temperature probe Meter fails to calibrate or gives faulty readings Broken pH electrode Replace electrode Error me...

Page 49: ...tion 500 mL HI5091 pH 9 18 buffer solution 500 mL HI5010 pH 10 01 buffer solution 500 mL HI5124 pH 12 45 buffer solution 500 mL HI700044P Pool Line 4 01 pH buffer solution sachet 20 mL sachet 25 pcs HI700074P Pool Line 7 01 pH buffer solution sachet 20 mL sachet 25 pcs HI8004L pH 4 01 buffer solution in FDA approved bottle 500 mL HI8006L pH 6 86 buffer solution in FDA approved bottle 500 mL HI8007...

Page 50: ...ns HI7071 3 5M KCl AgCl Electrolyte 4x30 mL for single junction electrodes HI7072 1M KNO3 Electrolyte 4x30 mL HI7082 3 5M KCl Electrolyte 4x30 mL for double junction electrodes HI8071 3 5M KCl AgCl Electrolyte in FDA approved bottle 4x30 mL for single junction electrodes HI8072 1M KNO3 Electrolyte in FDA approved bottle 4x30 mL HI8082 3 5M KCl Electrolyte in FDA approved bottle 4x30 mL for double ...

Page 51: ...body semimicro single junction refillable combination pH electrode with a BNC connector and 1 m 3 3 cable HI2031B Glass body semimicro conic refillable combination pH electrode with a BNC connector and 1 m 3 3 cable HI1332B Plastic body PEI double junction refillable combination pH electrode with a BNC connector and 1 m 3 3 cable ORP Electrodes HI3131B Glass body refillable combination platinum OR...

Page 52: ...ng pipet 20 pcs HI76405 Electrode holder HI7662 Temperature probe HI8427 pH and ORP electrode simulator with 1 m 3 3 coaxial BNC BNC cable HI9310014 Pool Line pH mV precision simulator with LCD and 1 m 3 3 coaxial BNC BNC cable HI92000 Windows compatible software application HI920015 Micro USB cable ...

Page 53: ...em over to the appropriate collection point for recycling Ensuring proper product and battery disposal prevents potential negative consequences for the environment and human health For more information contact your city your local household waste disposal service the place of purchase or go to www hannainst com RECOMMENDATIONS FOR USERS Before using this product make sure it is entirely suitable f...

Page 54: ...is not covered If service is required contact your local Hanna Instruments Office 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 RGA number from the Tech...

Page 55: ...Hanna Instruments reserves the right to modify the design construction or appearance of its products without advance notice ...

Page 56: ...World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com MAN981914 Printed in ROMANIA ...

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