HI 98121
Contents
1. Hanna Service Center for recalibration if necessary Setup mode allows the selection of temperature unit and pH buffer set To enter the Setup mode select pH mode and then press the amp MODE button until CAL on the second ary display is replaced by TEMP and the current temperature unit E g TEMP C Then for C F selection Use the SET HOLD button After the temperature unit has been selected press the MODE button to enter mode press the amp MODE button twice to return to the normal measuring mode e to change the calibration buffer set After setting the temperature unit the meter will show the current buffer set pH 7 01 BUFF for 4 01 7 01 10 01 or pH 6 86 BUFF for NIST 4 01 6 86 9 18 Change the set with the SET HOLD button then press MODE to return to the normal measuring mode he buffer set selection ELECTRODE MAINTENANCE When not in use rinse the electrodes with water to minimize contamination and store them with a few drops of HI 70300 storage solution in the protective cap after use DO NOT USE DISTILLED OR DEION IZED WATER FOR STORAGE PURPOSES e If the electrodes have been left dry soak in storage solution for at least one hour to reactivate them e To prolong the life of the electrodes it is recom mended to clean them monthly by immersing them in the HI 7061 cleaning solution for half an hour Afterwards rinse it thoroughly with tap water and recalibrate the met2. be fro zen on the LCD Press any button to return to normal mode To turn the meter off While in measurement mode press the MODE button OFF will appear on the secondary display Release the button Note If measurements are taken in different samples successively rinse the probe thoroughly to eliminate cross contamination and after cleaning rinse the probe with some of the sample to be measured pH MEASUREMENTS amp CALIBRATION Taking measurements Select pH mode with the SET HOLD button Submerge the electrode in the solution to be tested while stirring it gently The measurements should be taken when the stability symbol D on the top left of the LCD disappears The pH value automatically com pensated for temperature is shown on the primary LCD while the secondary LCD shows the temperature of the sample Note Before taking any pH measurement make sure the meter has been calibrated CAL tag present on the LCD pH Calibration For better accuracy frequent calibration of the instru ment is recommended In addition the instrument must be recalibrated whenever a The pH electrode is replaced b After testing aggressive chemicals od Where high accuracy is required d At least once a month Calibration procedure From normal measuring mode press and hold the MODE button until OFF on the secondary LCD is replaced by CAL Release the button The LCD enters the calibration mode displaying pH 7
3. 01 USE or oH 6 86 USE if the NIST buffer set was selected After 1 second the meter activates the automatic buffer recognition feature If a valid buffer is detected then its value is shown on the primary display and REC appears on the secondary LCD If no valid buffer is detected the meter keeps the USE indication active for 12 seconds and then it replaces it with WRNG indicating the sample being measured is not a valid buffer e For a single point calibration with buffers pH 4 01 9 18 or 10 01 the meter automatically accepts the calibration when the reading is stable the meter displays the accepted buffer with the message OK 1 After 1 second the meter automatically returns to the normal measuring mode If a single point calibration with buffer pH 7 01 or pH 6 86 is desired then after the calibration point has been accepted the amp MODE button must be pressed in order to return to normal mode After the button is pressed the meter shows 7 01 or 6 86 OK 1 and after 1 second it automatically returns to the normal measuring mode Note It is always recommended to carry out a two point calibration for better accuracy e For a two point calibration place the electrode in pH 7 01 or pH 6 86 buffer After the first calibration point has been accepted the pH 4 01 USE message appears The message is held for 12 seconds unless a valid buffer is recognized If no valid buff
4. 81 1 Electromagnetic Compatibility Generic Emission Standard EN tiated Class B EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory us ue 13 02 2002 Sanib A Marsilio Technical Director On behalf of Hanna Instruments S r l Recommendations for Users Before using this product make sure that it is entirely suitable for the environment in which it is used The glass bulb at the end of the electrode is sensitive to electrostatic discharges Avoid touching the glass bulb and the ORP electrode at all times Any variation introduced by the user to the supplied equip ment may degrade the instrument s EMC performance To avoid electrical shock do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC To avoid damages or burns do not perform any measurement in microwave ovens HI 73127 Replaceable pH electrode HI 73128 Electrode removal tool HI 70004P pH 4 01 solution 20 mL sachet 25 pcs HI 70006P pH 6 86 solution 20 mL sachet 25 pcs HI 70007P_ pH 7 01 solution 20 mL sachet 25 pcs HI 70009P pH 9 18 solution 20 mL sachet 25 pcs HI 70010P pH 10 01 solution 20 mL sachet 25 pcs HI 7004M pH 4 01 solution 230 mL bottle HI 7006M pH 6 86 solution 230 mL bottle HI 7007M_ pH 7 01 solution 230 mL bottle HI 7009M_ pH 9 18 solution 230 mL bottle HI 7010M_ pH 10 01 solution 230 mL bottle HI 7021M_ OR test solution 240
5. Instruction Manual HI 98121 Waterproof pH ORP amp Temperature Meter BEAN en instruments www hannainst com WARRANTY HI 98121 is warranted for one year against defects in workmanship and materials when used for its intended purpose and maintained according to in structions The electrode is warranted for a period of six months This warranty is limited to repair or replacement free of charge Damages due to accident 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 failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be re turned to Hanna Instruments first obtain a Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid When shipping any instrument make sure it is properly packaged for complete protection All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Hanna Instruments reserves the right to modify the design con struction and appearance of its products without advance notice Dear Customer Thank you for choosing a Hanna product This manual will provide you with the necessary informa tion for cor
6. er e The pH electrode can be easily replaced by using the supplied tool HI 73128 Insert the tool into the probe cavity as shown below lt Waterproot Rotate the electrode counterclockwise Pull the electrode out by using the other side of the tool gt aie Insert a new pH electrode following the above instruc tions in reverse order BATTERY REPLACEMENT The meter displays the remaining battery percentage every time it is switched on When the battery level is below 5 the symbol on the bottom left of the LCD lights up to indicate a low battery condition The batter ies should be replaced soon If the battery level is low enough to cause erroneous readings the meter shows 0 and the Battery Error Prevention System BEPS will automatically turn the meter off To change the batteries remove the 4 screws located on the top of the meter gp qc LCD side Once the top has been removed carefully replace the 4 batteries located in the compartment while paying atten tion to their polarity Replace the top making sure that the gasket is properly seated in place and tighten the screws to ensure a watertight seal
7. er is recog nized then the WRNG message is shown If a valid buffer pH 4 01 pH 10 01 or pH 9 18 is detected then the meter completes the calibration procedure When the buffer is accepted the LCD shows the accepted value with the OK 2 message and then the meter returns to the normal measuring mode Note When the calibration procedure is completed the CAL tag is turned on To quit calibration and to reset to the default values e After entering the calibration mode and before the first point is accepted it is possible to quit the procedure and return to the last calibration data by pressing the MODE button The secondary LCD displays ESC for 1 second and the meter returns to the normal measuring mode e To reset to the default values and clear a previous calibration press the SET HOLD button after entering the calibration mode and before the first point is accepted The secondary LCD displays CLR for 1 second the meter resets to the default calibration and the CAL tag on the LCD disappears ORP MEASUREMENTS Taking measurements Select ORP mode with the SET HOLD button Submerge the electrode in the solution to be tested The measurements should be taken when the stability symbol D on the top left of the LCD disappears The ORP mV value is shown on the primary LCD while the secondary LCD shows the tem perature of the sample The ORP range is factory calibrated Contact your nearest
8. mV 230 mL bottle HI 7022M ORP test solution 470 mV 230 mL bottle HI 7061M_ Electrode cleaning solution 230 mL bottle HI 70300M Electrode storage solution 230 mL bottle HI 7091M_ Pretreatment reducing solution 230 mL HI 7092M Pretreatment oxidizing solution 230 mL IST98121 05 05 SPECIFICATIONS Range 2 00 to 16 00 pH 1000 mV 5 0 to 60 0 C 23 0 to 140 0 F Resolution 0 01 pH 1 mV 0 1 C or 0 1 F Accuracy 0 05 pH 20 C 68 F 2 mV 0 5 C of 1 F Typical EMC 0 02 pH Deviation 2 mV 0 3 C or 0 6 F Automatic for pH Temp Compensation Calibration pH at 1 or 2 points with 2 sets of memorized buffers pH 4 01 7 01 10 01 or pH 4 01 6 86 9 18 ORP factory calibrated Electrode HI 73127 pH electrode included Environment 5 to 50 C 23 to 122 F RH 100 BatteryType Life 4 x 1 5V approx 250 hours Auto off After 8 minutes of non use Dimensions 163 x 40 x 26 mm 6 4 x 1 6 x 1 0 Weight 100 g 3 5 oz OPERATIONAL GUIDE To turn the meter on and to check battery status Press and hold the amp MODE button until the LCD lights up All the used segments on the LCD will be visible for 1 second or as long as the button is pressed followed by the percent indication of the remaining battery life E g 100 BATT To freeze the display While in measurement mode press the SET HOLD button until HOLD appears on the secondary display The reading will
9. placed In addition the Battery Error Prevention System BEPS avoids erroneous reading caused by low voltage level by turning the meter off The HI 73127 pH electrode supplied with the meter is interchangeable and can be easily replaced by the user The stainless steel encapsulated temperature sensor facilitates faster and more accurate temperature mea surement and compensation FUNCTIONAL DESCRIPTION CE DECLARATION OF CONFORMITY NOOB WN Ds SSE 4 Sur 4 ATG mV pH ia 2 6 Z 3 OI N ae c eee 4 E E F Q 1 Automatic Temperature Compensation Indicator 2 Stability indicator 3 Battery life percentage indicator 4 Low battery indicator 5 Secondary display 6 Primary display 7 Measuring unit for primary display FANNA 825 c GiH E D O MODE SET HOLD ne oD g Ma 2 6 5 Battery compartment Liquid Crystal Display LCD ON OFF MODE button HI 73127 pH electrode Temperature sensor behind ORP electrode SET HOLD button IEHANN instruments cE DECLARATION OF CONFORMITY herewith certify that the pH ORP amp temperature meter HI 98121 has been tested and found to be in compliance with EMC Directive 89 336 EEC and Low Voltage Di 23 EEC according to ipplicable normatives EN 50082 1 Electromagnetic EE eric Immunity Standard JEC 61000 4 2 jarge ENS00
10. rect operation Please read it carefully before using the meter If you need additional technical information do not hesitate to e mail us at tech hannainst com This instrument is in compliance with the CE direc tives PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully If any damage has occurred during shipment immediately notify your Dealer or the nearest Hanna Customer Service Center Each meter is supplied with e HI 73127 pH electrode e HI 73128 Electrode removal too e 4 x 1 5V batteries Note Conserve all packing material until the instru ment has been observed to function correctly Any defective item must be returned in its original packing US DESIGN PATENT D462 024 GENERAL DESCRIPTION HI 98121 is a waterproof pH ORP and temperature meter The housing has been completely sealed against humidity and designed to float All pH readings are automatically temperature com pensated ATC and temperature values can be displayed in C or F units The meter can be calibrated at one or two points for pH with auto buffer recognition and against five memorized buffer values while the mV ORP range is factory calibrated Measurements are highly accurate with a unique stability indicator right on the LCD This meter is also provided with battery level indication at start up and with a low battery symbol which warns the user when the batteries need to be re
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