Myron L Meters Ultrameter II Water Level Meter User Manual
Contents
1. 37 G uDock IR Data Port Accessory Package 37 TEMPERATURE COMPENSATION Tempco of Aqueous Solutions 37 A Standardized to 25 C 2 cece eee 37 B Tempco Variation ccc eee eee eee 37 C AnExample 0 ccc cece eee 38 D AChart of Comparative Error 39 E Other Solutions eee e eee 39 CONDUCTIVITY CONVERSION to TOTAL DISSOLVED SOLIDS TDS 40 A How it s Done 0c eee eee eee 40 B Solution Characteristics 40 C When does it make a lot of difference 41 TEMPERATURE COMPENSATION Tempco and TDS DERIVATION 0 eee e eee eee 41 A Conductivity Characteristics 41 B Finding the Tempco of an Unknown 42 C Finding the TDS Ratio of an Unknown 42 pH and ORP 6P 270x ka aka hen 43 PIO GP recio tre een ne 43 B ORP Oxidation Reduction Potential REDOX 6P 45 SOFTWARE VERSION ooooccccccc nennen 46 GLOSSARY un aha does 47 ADDENDUM PARA 48 NOTES ccoo ne learning 49 II RULES of OPERATION A Operation Using the instrument is simple Individual or multiple parameter readings may be obtained by filling individual sensors or entire cell cup area Rinse the conductivity cell or pH ORP sensor 6P well with test solution 3 times and refill Temperature and or measurement extremes will require additional rinses for maximum accuracy2. 1 700 1 600 Temperature 1 50096 0 5 10 15 20 25 30 35 40 45 50 55 60 Chart 1 C An Example of 2 different solution selections and the resulting compensation How much error results from treating natural water as if it were KCI at 15 C A tap water solution should be compensated as 442 with a tempco of 1 68 C where the KCI value used would be 1 90 C Suppose a measurement at 15 C 59 F is 900 microsiemens of true uncompensated conductivity Using a 442 correction of 10 degrees below 25 x 1 6896 indicates the solution is reading 16 896 low For correction dividing by 832 yields 1082 microsiemens as a compensated reading A KCI correction of 10 degrees below 25 x 1 9 indicates the solution is reading 19 low Dividing by 81 yields 1111 microsiemens for a compensated reading The difference is 29 out of 1082 2 7 38 D AChart of Comparative Error In the range of 1000 uS the error using KCI on a solution that should be compensated as NaCl or as 442 is illustrated in the graph below 7 ay I FH 442 error with KCI tempco 4 NaCl error with KCI tempco 5 4 3 2 1 0 1 Temperature 2 0 5 10 15 20 25 30 35 40 45 50 55 Chart 2 Users wanting to measure natural water based solutions to 1 would have to alter the internal compensation to the more suitable preloaded
3. 21 TIME and DATE 22 22222 ssseeenn ernennen nennen 22 A Setting TIME 22 2222 ss nennen 22 B Setting DATE 200 nenne nenne nenn 23 C DATE FORMAT US amp International Int 24 TEMPERATURE FORMAT Centigrade Fahrenheit 24 TOTAL RETURN to FACTORY SETTINGS 25 GELLCHECK ur een 26 AUTO OFE er aaa DEN AAE a a ee 26 USER MODE CALIBRATION LINC FUNCTION 27 A Calibration of Ultrameter IT for use in User Mode 27 B Setting User Mode Calibration Linc 28 C Canceling User Mode Calibration Linc 29 uDock IR DATAPORT 2a 30 A Software Installation a 30 B Hardware Setup a aasa 30 C Memory Stack Download 2222220 30 CARE and MAINTENANCE 222200 32 A Temperature Extremes saaaa a 32 B Battery Replacement aa 32 C pH ORP Sensor Replacement 6P 32 D Cleaning Sensors aaa 32 TROUBLESHOOTING 222i 34 ACCESSORIES naa ama name 36 A Conductivity TDS Standard Solutions 36 B pH Buffer Solutions 6P aa 36 C pH Sensor Storage Solution 6P 36 XX XXI XXII XXIII XXIV XXV XXVI XXVII D Soft Protective Carry Cases 37 E Hard Protective Carry Cases 37 F Replacement pH ORP Sensor 6P
4. refer to Why Solution Selection is Available pg 11 and Procedure to Select a Solution pg 11 a COND Key Solution to be tested is introduced into the conductivity cell and a press of displays conductivity with units on the right On the left is shown the solution type selected for conductivity b RES Key A press of displays resistivity with units on the right On the left is shown solution type selected for resistivity ref Solution Selection pg 11 The range of display of resistivity is limited to between 10 kilohms KO and 30 megohms MQ A solution outside that range will only show in the display c TDS Key A press of displays Total Dissolved Solids with units on the right This is a display of the concentration of material calculated from compensated conductivity using the characteristics of a known material On the left is shown solution type selected for TDS ref Solution Selection pg 11 3 pH and ORP Keys Measurements are made on solution held in the pH ORP sensor well ref pH and ORP pg 43 The protective cap is removed and the sensor well is filled and rinsed with the sample enough times to completely replace the storage solution After use the pH ORP sensor well must be refilled with Myron L Storage Solution and the protective cap reinstalled securely ref Maintenance of the pH ORP Sensor pg 9 and Cleaning Sensors 2 pH ORP pg 32 a pH Key 6P A press m displays pH
5. MEMORY A Memory Storage 1 While displaying a measurement press 3 to record the displayed value 2 MEMORY will appear Figure 9 and the temperature display will be momentarily replaced by a number 1 100 showing the position of the record Figure 9 shows a reading of 1806 uS stored in memory record 4 B Memory Recall Press any measurement key 2 Press CD MEMORY will appear and the display will show the last record stored 3 Press Dot Or 5 to scroll to the record location desired the temperature display alternates between temperature naaa and location number 4 Press to display time and date stamp 5 Press any measurement key to leave memory recall or allow to automatically turn off C Clearing a Record Memory Clear After recalling a certain record location press and HOLD to clear that memory This space will be the place for the next memory record unless you scroll to another empty position before ending the recall sequence The next memory stored will go into the next highest available memory location Example You have locations 1 7 filled and wish to clear the conductivity reading stored in record location 3 and replace it with a pH reading 21 1 Press and scroll to location 3 2 Press and HOLD to clear old record 3 3 Fill pH ORP sensor well with sample to measure sample and press to store reading in location 3 B 4 Press 5 The next memory s
6. Vill CALIBRATION INTERVALS There is no simple answer as to how often one should calibrate an instrument The Ultrameter II is designed to not require frequent recalibration The most common sources of error were eliminated in the design and there are no mechanical adjustments Still to ensure specified accuracy any instrument must be checked against chemical standards occasionally A Suggested Intervals On the average we expect calibration need only be checked monthly for the Conductivity RES or TDS functions The pH 6P function should be checked every 2 weeks to ensure accuracy Measuring some solutions will require more frequent intervals B Calibration Tracking Records To minimize your calibration effort keep records If adjustments you are making are minimal for your application you can check less often Changes in conductivity calibration should be recorded in percent Changes in pH calibration 6P are best recorded in pH units Calibration is purposely limited in the Ultrameter II to 10 for the conductivity cell as any change beyond that indicates damage not drift Likewise calibration changes are limited to 1 pH unit 6P as any change beyond that indicates the end of the sensor s lifetime and replacement is recommended C Conductivity RES TDS Practices to Maintain Calibration 1 Clean oily films or organic material from the cell electrodes with foaming cleaner or mild acid Do not scrub inside t
7. 0 01 lt 100 ppt 0 1 lt 200 mS 0 1 lt 200 ppt Accuracy 01 pH 1 of reading 1 of reading 1 of reading Auto 0 0 71 C 0 71 C 0 71 C Temperature 32 160 F 32 160 F 32 160 F Compensation Adjustable 0 9 99 C 0 9 99 C 0 9 99 C Temperature Compensation Cond TDS KCI NaCl 4427 Ratios Preprogrammed Adjustable 0 20 7 99 Cond TDS Ratio Factor 2 pH in presence of RF fields 3 V m and gt 300 MHz D Warranty Service The Myron L Ultrameter II excluding the pH ORP sensor 6P has a Two 2 Year Limited Warranty The pH ORP sensor 6P has a Six 6 Month Limited Warranty for materials and workmanship If an instrument fails to operate properly see Troubleshooting Chart pg 34 The battery and pH ORP sensor are user replaceable For other service return the instrument prepaid to the Myron L Company MYRON L COMPANY 2450 Impala Drive Carlsbad CA 92010 7226 USA 1 760 438 2021 E Mail info myronl com techquestions myronl com www myronl com If in the opinion of the factory failure was due to materials or workmanship repair or replacement will be made without charge A reasonable service charge will be made for diagnosis or repairs due to normal wear abuse or tampering This warranty is limited to the repair or replacement of the Ultrameter II only The Myron L Company assumes no other responsibility or liability E Ultrameter II Models ULTRAMETER I
8. Linc will stay intact with future calibrations unless the Linc has been canceled For more information on canceling the User Mode Calibration Linc refer to the section Canceling User Mode Calibration Linc pg 29 Follow the steps below to set either the KCI NaCl or 442 calibration factor to the User solution mode 1 Press measurement key desired to be Linked i e cow 2 Place the Ultrameter II in User mode ref SOLUTION SELECTION pg 11 for selecting the User Mode 3 Press gt arrow key until Figure 27 the menu Linc appears see Figure 27 4 Press key The instrument will display SEL and the User Icon see Figure 28 Figure 28 Any additional display of KCI NaCl or 442 icons indicates a Linc between the User solution and the other solution displayed 5 Press S or keys to select a Standard Solution to be linked to the Figure 29 User mode calibration constant see Figure 29 User linked to KCI If none of the Solution Selection icons are displayed i e KCI NaCl or 442 nothing has been linked to User mode 28 6 Press key to accept the setting Pressing any of the GB measurement keys will exit without changing the setting User mode Linc is now complete The User mode will now use the calibration gain constant used for the calibration of the Standard Solution as outlined above C Canceling User Mode Calibration Linc The Ultrame
9. 11 b With USER selected press CD If the display does not show 00 C hold long enough to bring the tempco to 00 C see Figure 3 C Press twice 3 times if in TDS mode Temperature compensation is now disabled 0 for measurements in USER mode Figure 3 3 User Programmable Conductivity to TDS Ratio This feature allows you to select a custom conductivity to TDS conversion ratio within the range of 0 20 7 99 for USER mode measurements To determine the conversion ratio for a custom solution of known TDS ppm value measure the solution conductivity at 25 C with the Ultrameter II and divide the ppm value by the uS value For example a solution of known 75ppm TDS and measured 100u4S conductivity at 25 C would have a conversion ratio of 75 100 or 0 75 Enter the new conversion ratio as follows a While in USER mode press 705 b Press twice to skip over tempco adjustment and RATIO will appear see Figure 4 c Adjust with a or key until new conversion ratio is displayed Figure 4 d Press twice to skip over calibration adjustment to accept new conversion ratio You are now ready to measure samples with the new conductivity TDS ratio In these first six sections you have learned all you need to make accurate measurements The following sections contain calibration advanced operations and technical information Vil CALIBRATION A Calibration Intervals Ge
10. NOTE Ensure pH protective cap is secure to avoid contamination Hold instrument at 30 angle cup sloping downward Let sample flow continuously into conductivity cell with no aeration Press key use best reading If reading is lower than 10 kilohms display will be dashes Use Conductivity 10 C Measuring pH 6P Remove protective cap by squeezing its sides and pulling up Rinse sensor well 3 times with sample to be measured Shake out each sample to remove any residual liquid Refill both sensor wells with sample Press on Note value displayed IMPORTANT After use fill pH ORP sensor well with Myron L pH Sensor Storage Solution and replace protective cap If Myron L pH Sensor Storage Solution is unavailable use a strong KCI solution a pH 4 buffer or a saturated solution of table salt and tap water ref Cleaning Sensors 2 pH ORP pg 32 Do not allow pH ORP sensor to dry out D Measuring ORP 6P Remove protective cap by squeezing its sides and pulling up Rinse sensor well 3 times with sample to be measured Shake out each sample to remove any residual liquid 3 Refill both sensor wells with sample 4 Press or 5 Take reading 6 IMPORTANT After use fill pH ORP sensor well with Myron L pH Sensor Storage Solution and replace protective cap If Myron L pH Sensor Storage Solution is unavailable use a strong KCI solution a pH 4 buffer or a saturated solution of table s
11. Press the desired measurement key to start measurement Pressing the key again restarts the 15 second auto off timer Note the value displayed or press the MS key to store the reading ref Memory Storage pg 21 It s that simple B Characteristics of the Keys Though your Ultrameter II has a variety of sophisticated options it is designed to provide quick easy accurate measurements by simply pressing one key All functions are performed one key at a time There is no off key After 15 seconds of inactivity the instrument turns itself off 60 seconds in CAL mode User adjustable up to 75 seconds Rarely is it necessary to press and hold a key as in Procedure to Select a Solution pg 11 or Cond or TDS Calibration pg 15 C Operation of the Keys See Instrument Illustration on pg i 1 Measurement Keys in General Any of the 5 measurement keys in the upper part of the keypad turns on the instrument in the mode selected The mode is shown at the bottom of the display and the measurement units appear at the right Pressing a measurement key does this even if you are in a calibration sequence and also serves to cancel a change ref Leaving Calibration pg 14 2 COND RES and TDS Keys These 3 keys are used with solution in the Conductivity Cell Precautions While filling cell cup ensure no air bubbles cling on the cell wall 2 If the proper solution is not selected KCI NaCl 442 or USER
12. Troubleshooting pg 34 or fresh buffer solution The FAC internal electronic calibration is not intended to replace calibration with pH buffers It assumes an ideal pH sensor Each FAC indicates a factory setting for that calibration step i e 7 acid base You may press to accept the preset factory value or you may reduce your variation from factory setting by pressing gt or o 6 Press to accept the new value The pH Zero Calibration is now complete You may continue with pH Gain Calibration or exit by pressing any measurement key b pH Gain Calibration 6P Important Always calibrate or verify your Ultrameter II with a pH 7 buffer solution before adjusting the gain with acid or base buffers i e 4 and or 10 etc Either acid or base solution can be used for the 2nd point Gain calibration and then the opposite for the 3rd point The display will verify that a buffer is in the sensor well by displaying either Acd or HAS 1 The pH calibration mode is initiated by either completion of the pH Zero Calibration or verifying 7 buffer and pressing the key twice while in pH measurement mode 2 At this point the CAL BUFFER and Acd or bAS annunciators will be displayed see Figures 7 and 8 BUFFER Figure 7 Figure 8 NOTE Ifthe Acd and bAS indicators are blinking the unit is indicating an error and needs either an acid or base solution present i
13. a very active chemical discolors the electrodes this does not affect the accuracy leave it alone B Maintenance of the pH ORP Sensor 6P The sensor well must be kept wet with a solution Before replacing the rubber cap rinse and fill the sensor well with Myron L pH Storage Solution If unavailable use an almost saturated KCI solution pH 4 buffer or a saturated solution of table salt and tap water ref pH and ORP Practices pg 20 NEVER USE DISTILLED WATER V SPECIFIC RECOMMENDED MEASURING PROCEDURES If the proper solution is not selected KCI NaCl 442 or USER see Solution Selection pg 11 NOTE After sampling high concentration solutions or temperature extremes more rinsing may be required When sampling low conductivity solutions be sure the pH cap is well seated so that no solution washes into the conductivity cell from around the pH cap A Measuring Conductivity 4 Total Dissolved Solids TDS 1 Rinse cell cup 3 times with sample to be measured This conditions the temperature compensation network and prepares the cell 2 Refill cell cup with sample 3 Press Or ros 4 Take reading A display of indicates an overrange condition B Measuring Resistivity Resistivity is for low conductivity solutions In a cell cup the value may drift from trace contaminants or absorption from atmospheric gasses so measuring a flowing sample is recommended 1 2 3 4
14. downloaded the data may be manipulated printed or stored within the Myron L uDock application or the data may be exported to another more powerful spreadsheet such as Excel t Please Note Although the Myron L Company has performed extensive testing we cannot guarantee compatibility of all applications and formats We suggest testing your application and format for compatibility before relying on it Additional features such as setting time and date and erasing data are available See uDock software installation CD or visit www myronl com for the latest instructions 8 Upon completion click on the disconnect icon 9 Turn off Ultrameter II PC download mode by selecting any measurement function Failure to do so will reduce battery life 31 XVII CARE and MAINTENANCE Ultrameter IIs should be rinsed with clean water after use Solvents should be avoided Shock damage from a fall may cause instrument failure A Temperature Extremes Solutions in excess of 71 C 160 F should not be placed in the cell cup area this may cause damage The pH sensor may fracture if the Ultrameter II temperature is allowed to go below 0 C 32 F Care should be exercised not to exceed rated operating temperature Leaving the Ultrameter II in a vehicle or storage shed on a hot day can easily subject the instrument to over 66 C 150 F This will void the warranty B Battery Replacement Dry Instrument THOROUGHLY Remove the fo
15. readings No units are displayed on the right b ORP Key 6P A press of displays Oxidation Reduction Potential REDOX reading in millivolts mV is displayed 4 CAL MCLR Key A press of allows you to enter the calibration mode while measuring conductivity TDS or pH Once in CAL mode a press of this key accepts the new value If no more calibration options follow the instrument returns to measuring ref Leaving Calibration pg 14 If is held down for about 3 seconds CAL mode is not entered but SEL appears to allow Solution Selection ref pg 11 with the Up or Down keys As in calibration the CAL key is now an accept key While reviewing stored records the MCLR side of the key is active to allow clearing records ref Clearing a Record Memory Clear pg 21 5 UP or DOWN Keys While measuring in any parameter the 3 or keys activate the Memory Store and Memory Recall functions While in CAL mode the keys step or scroll the displayed value up or down A single press steps the display and holding either key scrolls the value rapidly While in Memory Recall the keys scroll the display up and down through the stack of records ref Memory Recall pg 21 IV AFTER USING the Ultrameter II A Maintenance of the Conductivity Cell Rinse out the cell cup with clean water Do not scrub the cell For oily films squirt in a foaming non abrasive cleaner and rinse ref Cleaning Sensors pg 32 Even if
16. 442 values or stay close to 25 C Users who have standardized to KCI based compensation may want to stick with it regardless of increasing error as you get further from 25 C The Ultrameter II will provide the repeatability and convertibility of data necessary for relative values for process control E Other Solutions A salt solution like sea water or liquid fertilizer acts like NaCl An internal correction for NaCl can be selected for greatest accuracy with such solutions Many solutions are not at all similar to KCI NaCl or 442 A sugar solution or a silicate or a calcium salt at a high or low temperature may require a User value peculiar to the application to provide readings close to the true compensated conductivity Clearly the solution characteristics should be chosen to truly represent the actual water under test for rated accuracy of 196 Many industrial applications have historically used relative measurements seeking a 39 number to indicate a certain setpoint or minimum concentration or trend The Ultrameter II gives the user the capability to collect data in KCI conductivity units to compare to older published data in terms of NaCl or 442 or as appropriate The Ultrameter II can be used to reconcile data taken with other compensation assumptions especially with its ability to allow custom characteristics through the USER mode XXI CONDUCTIVITY CONVERSION to TOTAL DISSOLVED SOLIDS TDS Electr
17. B the change new day see Figure 15 Figure 15 C DATE FORMAT US 8 International Int Press Press repeatedly until the format is displayed stored HO readings PC OFF CLI ALL time date date format Press to change Display will now indicate other format GB see Figures 16 amp 17 Press any measurement key or allow to automatically turn off ba um ine Figure 16 Figure 17 TEMPERATURE FORMAT Centigrade amp Fahrenheit Press Press to display the stored memory records Press repeatedly until you pass the US or Int date HOO format location The display will show a C or F see Figures 18 and 19 r ba Figure 18 Figure 19 4 Press to switch units 5 Press to accept unit preference for all temperature Oke readings NOTE Tempco will still be shown in C XII TOTAL RETURN to FACTORY SETTINGS FAC SEL There may come a time when it would be desirable to quickly reset all the recorded calibration values in the instrument back to the factory settings This might be to ensure all calibrations are set to a known value or to give the instrument to someone else free of adjustments or recorded data for a particular application NOTE All stored data will be lost 1 Press 2 Press to display the stored memory records 3 Press repeatedly DGO until you pass the CLF ALL and the C F locations The display will
18. I MODELS 4P 6P PARAMETERS Conductivity TDS Conductivity T DS pH Resistivity Temp Resistivity ORP Temp MADE IN USA TABLE OF CONTENTS Instrument Illustration 2 0 0 etnies i l INTRODUCTION prena sun 4820 RR AR Reden 1 ll FEATURES and SPECIFICATIONS 2 22 222220000 2 Av Features dee ee ea 2 B General SpecificationS 0ooooo o 2 C Specification Chart cee eee 3 D Warranty Service aaa 3 E Ultrameter II Models 00 eee eee 3 lll RULES GF OPERATION maaamo mpa NAPAG ae 7 A Operation a 7 B Characteristics of the Keys 7 C Operation of the Keys a 7 1 Measurement Keysin General 7 2 COND RES and TDS Keys 7 3 pH and ORP Keys 6P 8 4 CAL MCLR Key 2 8 5 UP or DOWN Keys 2a 9 IV AFTER USING the Ultrameter Il 2 9 A Maintenance of the Conductivity Cell 9 B Maintenance of the pH ORP Sensor 6P 9 V SPECIFIC RECOMMENDED MEASURING PROCEDURES 9 VI VII A Measuring Conductivity Total Dissolved Solids 9 B Measuring Resistivity a 10 C Measuring pH 6P 2 00 cece eee ee eee 10 D Measuring ORP 6P aaa 10 SOLUTION SELECTION 0 222 a aaa 11 A Why Solution Selection is Available 11 B The 4 Solution Types aaa 11 C Ca
19. NOTE Check display to see if solution displayed KCI NaCl 442 or USER is already the type desired If not 1 Press cow Or to select the parameter on which 11 you wish to change the solution type 2 Press and hold key for 3 seconds to make SEL appear see Figure 1 For demonstration purposes all 4 solution types are shown simultaneously 3 Use the Sa or CD key to select type of solution desired ref Solution Characteristics pg 40 The selected solution Nag will be displayed KCI NaCl 442 or User 4 Press to accept new solution type E Application of USER Solution Type 1 User Programmable Temperature Compensation Tempco This feature allows you to change your Ultrameter II s temperature compensating factor to another factor between 0 9 99 C ref Temperature Compensation pg 37 This feature does not apply to pH or ORP Figure 1 a As in Procedure to Select a Solution pg 11 select USER mode b With USER mode now selected press ca You may now adjust a temperature compensation from 00 C to 9 99 C by pressing gt or Ce See example in Figure 2 C Press twice to skip calibration adjustment and accept the new tempco 3 times if in TDS mode You Figure 2 are now ready to measure samples with your new temperature compensation factor 12 2 Disabling Temperature Compensation a Select USER mode see Procedure to Select a Solution pg
20. ULTRAMETER I Operation Manual MODELS 6P amp 4P MYRON L COMPANY Water Quality Instrumentation Accuracy Reliability Simplicity 06 January 10 Instrument Illustration Reference pH ORP Sensor Junction under Replaceable Glass pH Bulb ORP Electrode pH Glass Electrode Conductivity Cell Built in Electrodes Temperature PH ORP Sensor Sensor Protective Cap TEST Value Preprogrammed variable Sang eas Units of Measurement ae MO Megohms cm mode KO Kilohms cm i LOBATT CAL MEMORY oo mS millisiemens cm temperature millimhos cm Conductivity HS microsiemens cm micromhos cm Conductivity PPM parts per million compensation factor and conductivity TDS ratio PPT parts per thousand TI A mV milliVolts Time 8 Date displayed here These Measurement keys will Turn instrument on Measure parameter Exit any function Parameters Displayed here Temperature readout USER temperature compensation or conductivity TDS ratio Memory Storage Recall pH Calibration Up key Memory Store This key for Down key Memory Recall e Calibration Memory Clear Solution Selection Confirmation COMPANY ULTRAM Wrist neck strap slot user supplied CE MODEL 6P Shown For detailed explanations see Table of Contents 04jan10 l INTRODUCTION Thank you for selecting the feature packed Ult
21. alt and tap water ref Cleaning Sensors 2 pH ORP pg 32 Do not allow pH ORP sensor to dry out VI SOLUTION SELECTION A Why Solution Selection is Available Conductivity resistivity and TDS require temperature correction to 25 C values ref Standardized to 25 C pg 38 Selection determines the temperature correction of conductivity and calculation of TDS from compensated conductivity ref Cond Conversion to TDS pg 40 B The 4 Solution Types On the left side of the display is the salt solution characteristic used to modeltemperature compensation of conductivity and its TDS conversion Generally using KCI for conductivity NaCl for resistivity and 442 Natural Water characteristic for TDS will reflect present industry practice for standardization This is how your instrument is shipped from the factory ref Solution Characteristics pg 40 The USER selection allows a custom value to be entered for the temperature compensation of conductivity and also the conversion ratio if measuring TDS C Calibration of Each Solution Type There is a separate calibration for each of the 4 solution types Note that calibration of a 442 solution does not affect the calibration of a NaCl solution For example Calibration ref Conductivity or TDS Calibration pg 15 is performed separately for each type of solution one wishes to measure ref Conductivity TDS Standard Solutions pg 36 D Procedure to Select a Solution
22. bination type that features a porous liquid junction f should not be 32 allowed to dry out However if this occurs the sensor may sometimes be rejuvenated by first cleaning the sensor well with Isopropyl alcohol or a liquid spray cleaner such as Windex or Fantastic and rinsing well Do not scrub or wipe the pH ORP sensor Then use one of the following methods 1 Pour a HOT salt solution 60 C 140 F preferably potassium chloride KCI solution Myron L pH ORP Sensor Storage Solution HOT tap water with table salt NaCl will work fine in the sensor well and allow to cool Retest Or 2 Pour DI water in the sensor well and allow to stand for no more than 4 hours longer can deplete the reference solution and damage the glass bulb Retest If neither method is successful the sensor must be replaced Drifting can be caused by a film on the pH sensor bulb and or reference Use isopropyl alcohol IPA or spray a liquid cleaner such as Windex or Fantastic into the sensor well to clean it The sensor bulb is very thin and delicate Do not scrub or wipe the pH ORP sensor ORP pH Glass Electrode Electrode pH ORP SENSOR T Top View E Reference A Junction Sensor under Glass Body pH Bulb Leaving high pH alkaline solutions in contact with the pH sensor for long periods of time is harmful and will cause damage Rinsing such liquids from the pH ORP sensor well and refilling it with Myron L Storag
23. changes not yet accepted and exits calibration mode Leaving pH after the 2nd buffer results in the same gain being entered in place of the 3rd buffer 2 Calibration Limits There are calibration limits A nominal FAC value is an ideal value stored by the factory Attempts to calibrate too far up or down from there will cause the displayed value to be replaced with FAC If you accept it press the Cal key you will have the original default factory calibration for this measurement The need to calibrate so far out that FAC appears indicates a procedural problem incorrect standard solution a very dirty cell cup or an aging pH ORP sensor ref Troubleshooting Chart pg 34 C Calibration Procedures 1 Conductivity or TDS Calibration a Rinse conductivity cell three times with proper standard KCl NaCl or 442 ref Cond TDS Standard Solutions pg 36 For user calibration see User Calibration Conductivity TDS below b Refill conductivity cell with same standard KCI 7000 shown c Press or ros then press D CAL icon will appear on the display see Figure 5 Figure 5 d Press Or to step the displayed value toward the standard s value 7032 5 7000 or hold a key down to scroll rapidly through the reading e Press once to confirm new value and end the calibration sequence for this particular solution type If another solution type is also to be measured change solution type no
24. ctivity and three times if in TDS to skip over tempco and ratio adjustments C Press key until FAC appears and release d Press to accept the factory calibration setting GD Gb 16 5 pH Calibration 6P Important Always zero your Ultrameter II with a pH 7 buffer solution before adjusting the gain with acid or base buffers i e 4 and or 10 etc a pH Zero Calibration 6P 1 Rinse sensor well 3 times with 7 buffer solution 2 Refill both sensor wells with 7 buffer solution 3 Press to verify the pH calibration If the display shows 7 00 skip the pH BUFFER Zero Calibration and PH proceed to section b pH Gain Calibration Figure 6 4 Press to enter calibration mode The CAL BUFFER and 7 annunciators will appear see Figure 6 Displayed value will be the uncalibrated sensor NOTES If a wrong buffer is added outside of 6 8 pH 7 and BUFFER will flash and the Ultrameter II will not adjust The uncalibrated pH value displayed in step 4 will assist in determining the accuracy of the pH sensor If the pH reading is above 8 with pH 7 buffer solution the sensor well needs additional rinsing or the pH sensor is defective and needs to be replaced 5 Press A or until the display reads 7 00 NOTE Attempted calibration of gt 1 pH point from factory calibration will cause FAC to appear This indicates the need for sensor replacement ref
25. ded with the instrument Special note Conductivity resistivity and TDS require mathematical correction to 25 C values ref Temperature Compensation pg 37 On the left of the Ultrameter IT s liquid crystal display is shown an indicator of the salt solution characteristic used to model temperature compensation of conductivity and its TDS conversion The indicator may be KCI NaCl 442 or USER Selection affects the temperature correction of conductivity and the calculation of TDS from compensated conductivity ref Conductivity Conversion to Total Dissolved Solids TDS pg 40 The selection can affect the reported conductivity of hot or cold solutions and will change the reported TDS of a solution Generally using KCI for conductivity NaCl for resistivity and 442 Natural Water characteristic for TDS will reflect present industry practice for standardization This is how your instrument as shipped from the factory is set to operate For use in sea water desalination for example both the conductivity and TDS may easily be changed to NaCl ll FEATURES and SPECIFICATIONS A Features Superior resolution 4 digit LCD displays full 9999 uS ppm Accuracy of BETTER than 1 of reading in a handheld instrument All electrodes are internal for maximum protection Improved 4 electrode sensor technology e Waterproof to 1 meter 3 feet e Autoranging conductivity T DS resistivity Prompts for easy pH calibration 6P Fact
26. e Solution a saturated KCI solution pH 4 buffer or a saturated solution of table salt and tap water will extend the useful life Samples containing chlorine sulfur or ammonia can poison any pH electrode If it is necessary to measure the pH of any such sample thoroughly rinse the sensor well with clean water immediately after taking the measurement Any sample element that reduces adds an electron to silver such as cyanide will attack the reference electrode Replacement sensors are available only from the Myron L Company or its authorized distributors 33 XVIII TROUBLESHOOTING CHART Possible Cause No display even though Battery weak or not connected measurement key pressed Inaccurate pH readings 1 pH calibration needed 6P Ref pH Cal pg 17 2 Cross contamination from residual pH buffers or samples in sensor well 3 Calibration with expired pH buffers No response to pH changes Sensor bulb is cracked or an 6P electromechanical short caused by an internal crack Will not adjust down to pH 7 pH ORP sensor has lost KCI pH readings drift or respond 1 Temporary condition due to slowly to changes in memory of solution in pH buffers samples sensor well for long periods 2 Bulb dirty or dried out or 3 Reference junction clogged or coated FAC is displayed repeatedly 6P Unstable 1 Dirty electrodes Conductivity TDS 2 Test samples greater than 1 Resistivity reading
27. fixed tempco for a limited measurement range enter a specific value through the USER function The tempco can be determined by 2 different methods 1 Heat or cool a sample of the solution to 25 C and measure its conductivity Heat or cool the solution to a typical temperature where it is normally measured After selecting USER function set the tempco to O C as in Disabling Temperature Compensation pg 13 No compensation Measure the new conductivity and the new temperature Divide the decrease or increase by the 25 C value Divide that difference by the temperature difference 2 Heat or cool a sample of the solution to 25 C and measure its conductivity Change the temperature to a typical measuring temperature Set the tempco to an expected value as in User Programmable Temperature Compensation pg 12 See if the compensated value is the same as the 25 C value If not raise or lower the tempco and measure again until the 25 C value is read C Finding the TDS Ratio of an Unknown Solution Once the effect of temperature is removed the compensated conductivity is a function of the concentration TDS There is a ratio of TDS to compensated conductivity for any solution which varies with concentration The ratio is set during calibration in USER mode as in section User Programmable Conductivity to TDS Ratio pg 13 A truly unknown solution has to have its TDS determined by evaporation and weighing Then the solutio
28. he cell 2 Calibrate with solutions close to the measurements you make Readings are compensated for temperature based on the type of solution If you choose to measure tap water with a KCI compensation which is often done ref An Example pg 38 and you calibrate with 442 solution because it is handy the further away from 25 C you are the more error you have Your records of calibration changes will reflect temperature changes more than the instrument s accuracy 3 Rinse out the cell with pure water after taking measurements Allowing slow dissolving crystals to form in the cell contaminates future samples 4 For maximum accuracy keep the pH sensor cap on tight so that no fluid washes into the conductivity cell D pH and ORP Practices to Maintain Calibration 6P 1 Keep the sensor wet with Myron L Storage Solution 2 Rinse away caustic solutions immediately after use ORP calibration solutions are caustic and 5 is considered very accurate By using the pH zero setting 0 mV 7 pH for ORP and precision electronics for detection the Ultrameter II delivers better accuracy without calibration than a simpler instrument could using calibration solutions 20 IX MEMORY This feature allows up to 100 readings with their temperatures to be stored simultaneously for later recall At the same time the TIME and DATE are also recorded To download the memory to a computer ref uDock IR Data Port pg 30
29. ical conductivity indicates solution concentration and ionization of the dissolved material Since temperature greatly affects ionization conductivity measurements are temperature dependent and are normally corrected to read what they would be at 25 C ref Temperature Compensation pg 37 A How it s Done Once the effect of temperature is removed the compensated conductivity is a function of the concentration TDS Temperature compensation of the conductivity of a solution is performed automatically by the internal processor with data derived from chemical tables Any dissolved salt at a known temperature has a known ratio of conductivity to concentration Tables of conversion ratios referenced to 25 C have been published by chemists for decades B Solution Characteristics Real world applications have to measure a wide range of materials and mixtures of electrolyte solutions To address this problem industrial users commonly use the characteristics of a standard material as a model for their solution such as KCl which is favored by chemists for its stability Users dealing with sea water etc use NaCl as the model for their concentration calculations Users dealing with freshwater work with mixtures including sulfates carbonates and chlorides the three predominant components anions in freshwater that the Myron L Company calls natural water These are modeled in a mixture called 442 which the Myron L Company
30. ing no external power source The uDock application will operate on Windows 2000 amp XP and Macintosh OS9 2 8 OSX based computer systems A Software Installation 1 Place Myron L Ultrameter II uDock Installation CD into your computer 2 Upon opening select the folder for your operating system 3 Install uDock application See detailed installation instructions on CD 4 Additional drivers may be required See our website for the latest information B Hardware Setup 1 Connect USB cable provided with uDock to your computer Assuming your computer is on the uDock GREEN LED will illuminate indicating there is power to the uDock and that a proper connection has been made C Memory Stack Download Launch the application using the uDock icon 2 Select the proper comm port setting first time only ui 3 Place CLEAN DRY Ultrameter II on uDock 4 Press key 5 Press and HOLD key until the menu PC OFF appears see Figure 30 Figure 30 30 6 Press key PC On will be displayed see Figure 31 The GREEN LED on the uDock will now be blinking periodically indicating communication has been established between the Ultrameter II and the uDock NOTE PC Ini may momentarily be displayed while initializing see Figure 32 T On your computer click on the data download button A Figure 32 data transfer bar will appear while the data is being downloaded Once
31. ionization of the dissolved material Since temperature greatly affects ionization conductivity measurements are temperature dependent and are normally corrected to read what they would be at 25 C A Standardized to 25 C Conductivity is measured with great accuracy in the Ultrameter II using a method that ignores fill level electrolysis electrode characteristics etc and features a microprocessor to perform temperature compensation In simpler instruments conductivity values are usually assigned an average correction similar to that of KCI solutions for correction to 25 C The correction to an equivalent KCI solution is a standard set by chemists that standardizes the measurements and allows calibration with precise KCI solutions In the Ultrameter II this correction can be set to other solutions or tailored for special measurements or applications B Tempco Variation Most conductivity instruments use an approximation of the temperature characteristics of solutions perhaps even assuming a constant value The value for KCI is often quoted simply as 2 C In fact KCI tempco 37 varies with concentration and temperature in a non linear fashion Other solutions have more variation still The Ultrameter II uses corrections that change with concentration and temperature instead of single average values See Chart 1 2 500 2 400 2 300 2 200 2 100 2 000 1 900 1 800 LJ O
32. libration of Each Solution Type 11 D Procedure to Select a Solution 11 E Application of USER Solution Type 12 1 User Programmable Temperature Compensation Tempco 12 2 Disabling Temperature Compensation 13 3 User Programmable Conductivity to TDS Ral mai hese Kisa KENT hia dd 13 CALIBRATION 022220 00 ce cece eee eee eee eee eee 14 A Calibration Intervals 14 B Rules for Calibration of the Ultrameter II 14 1 Calibration Steps 14 2 Calibration LimitS 15 VII XI XII XIII XIV XVI XVII XVIII XIX C Calibration Procedures 15 1 Conductivity or TDS Calibration 15 2 User Calibration Conductivity TDS 15 3 Resistivity Calibration 16 4 Reloading Factory Calibration 16 5 pH Calibration 6P 17 6 ORP Calibration 6P 19 7 Temperature Calibration 19 CALIBRATION INTERVALS 2 2222 19 A Suggested Intervals a 19 B Calibration Tracking Records 20 C Conductivity RES TDS Practices 20 D pH and ORP Practices 6P 20 MEMORY uman een 21 A Memory Storage aaa aaa 21 B Memory Recall aaa 21 C Clearing a Record Memory Clear
33. line A concentration of 10 mol liter of H would have 100 times less H ions than OH ions and be called an alkaline solution of pH 9 3 The pH Sensor 6P The active part of the pH sensor is a thin glass surface that is selectively receptive to hydrogen ions Available hydrogen ions in a solution will accumulate on this surface and a charge will build up across the glass interface The voltage can be measured with a very high impedance voltmeter circuit the dilemma is to connect the voltmeter to solution on each side The glass surface encloses a captured solution of potassium chloride holding an electrode of silver wire coated with silver chloride This is the most inert connection possible from a metal to an electrolyte It can still produce an offset voltage but using the same materials to connect to the solution on the other side of the membrane causes the 2 equal offsets to cancel 43 The problem is on the other side of the membrane is an unknown test solution not potassium chloride The outside electrode also called the Reference Junction is of the same construction with a porous plug in place of a glass barrier to allow the junction fluid to contact Ri Junction the test solution without significant one us migration of liquids through the plug material Figure 33 shows a typical 2 component pair Migration does occur and this limits the lifetime of a pH junction from depletion of solution inside the refere
34. markets for use as a calibration standard as it does standard KCI and NaCl solutions The Ultrameter II contains algorithms for these 3 most commonly referenced compounds The solution type in use is displayed on the left Besides KCl NaCl and 442 there is the USER choice The benefit of USER is that one may enter the temperature compensation and TDS ratio by hand greatly increasing accuracy of 40 readings for a specific solution That value remains a constant for all measurements and should be reset for different dilutions or temperatures C When does it make a lot of difference First the accuracy of temperature compensation to 25 C determines the accuracy of any TDS conversion Assume we have industrial process water to be pretreated by RO Assume it is 45 C and reads 1500 uS uncompensated 1 If NaCl compensation is used an instrument would report 1035 HS compensated which corresponds to 510 ppm NaCl 2 If 442 compensation is used an instrument would report 1024 HS compensated which corresponds to 713 ppm 442 The difference in values is 40 In spite of such large error some users will continue to take data in the NaCl mode because their previous data gathering and process monitoring was done with an older NaCl referenced device Selecting the correct Solution Type on the Ultrameter II will allow the user to attain true TDS readings that correspond to evaporated weight If none of the 3 standard solutio
35. n the sensor well 3 Rinse sensor well 3 times with acid or base buffer solution 4 Refill sensor well again with same buffer solution 5 Press or until display agrees with buffer value 18 6 Press to accept 2nd point of calibration Now the display indicates the next type of buffer to be used Single point Gain Calibration is complete You may continue for the 3rd point of Calibration 2nd Gain or exit by pressing any measurement key Exiting causes the value accepted for the buffer to be used for both acid and base measurements To continue with 3rd point calibration use basic buffer if acidic buffer was used in the 2nd point or vice versa Again match the display to the known buffer value as in step 2 and continue with the following steps TA Repeat steps 3 through 6 using opposite buffer solution 8 Press to accept 3rd point of calibration which completes the Calibration procedure Fill sensor well with Myron L Storage Solution and replace protective cap 6 ORP Calibration 6P ORP electrodes rarely give false readings without problems in the reference electrode For this reason and because calibration solutions for ORP are highly reactive and potentially hazardous your Ultrameter II has an electronic ORP calibration This causes the zero point on the reference electrode to be set whenever pH 7 calibration is done 7 Temperature Calibration Temperature calibration is not necessary in the Ultrameter II
36. n whose TDS is now known can be measured for conductivity and the ratio calculated Next time the same solution is to be measured the ratio is known 42 XXIII pH and ORP 6P A pH 6P 1 pH as an Indicator 6P pH is the measurement of Acidity or Alkalinity of an aqueous solution It is also stated as the Hydrogen lon activity of a solution pH measures the effective not the total acidity of a solution A 4 solution of acetic acid pH 4 vinegar can be quite palatable but a 4 solution of sulfuric acid pH 0 is a violent poison pH provides the needed quantitative information by expressing the degree of activity of an acid or base In a solution of one known component pH will indicate concentration indirectly However very dilute solutions may be very slow reading just because the very few ions take time to accumulate 2 pH Units 6P The acidity or alkalinity of a solution is a measurement of the relative availabilities of hydrogen H and hydroxide OH ions An increase in H ions increases acidity while an increase in OH ions increases alkalinity The total concentration of ions is fixed as a characteristic of water and balance would be 107 mol liter H and OH ions in a neutral solution where pH sensors give O voltage pH is defined as the negative logarithm of hydrogen ion concentration Where H concentration falls below 10 solutions are less acidic than neutral and therefore are alka
37. nce junction or from contamination The junction Flectrode may be damaged if dried out a because insoluble crystals may form Electrode wire in a layer obstructing contact with KCI solution test solutions See pH ORP pg 43 Glass surface Figure 33 4 The Myron L Integral pH Sensor 6P The sensor in the Ultrameter II see Figure 34 is a single bike construction in an easily Surface N replaceable package The sensor body holds an oversize solution supply for long life The reference junction wick is porous to provide a very stable low permeable interface and is located under the glass pH sensing electrode This construction combines all the best features of any pH sensor known Ei ki iong Junction plug a Platinum button KCI solution Electrode wires 5 Sources of Error 6P The basics are presented in Figure 34 pH ORP pg 43 a Reference Junction The most common sensor problem will be a clogged junction because a sensor was allowed to dry out The symptom is a drift in the zero setting at 7 pH This is why the Ultrameter IT does not allow more than 1 pH unit of offset during calibration At that point the junction is unreliable b Sensitivity Problems Sensitivity is the receptiveness of the glass surface A film on the surface can diminish sensitivity and cause a long response time 44 c Temperature Compensation pH sensor glass changes its sensitivity slightly with tempera
38. nerally calibration is recommended about once per month with Conductivity or TDS solutions Calibration with pH solutions should be checked twice a month Calibration of ORP is not necessary ref CALIBRATION INTERVALS pg 19 B Rules for Calibration of the Ultrameter II 1 Calibration Steps a Starting Calibration Calibration is begun by pressing while measuring Conductivity TDS or pH Measuring continues but the CAL icon is on indicating calibration is now changeable The reading is changed with the 3 and keys to match the known value The calibration for each of the 4 solution types may be performed in either conductivity or TDS mode Depending on what is being calibrated there may be 1 2 or 3 steps to the calibration procedures KCI NaCl or 442 User Cond Gain only Tempco then Gain Res Done in conductivity Done in conductivity or TDS TDS Gain only Tempco Ratio then Gain pH 7 acid and or base 6P ORP Zero set with pH 7 automatically 6P Once in CAL mode the key becomes an ACCEPT key At each point pressing accepts the new calibration value and steps you to the next adjustment or out of CAL mode if there are no more steps To bypass a calibration step simply press to accept the present value as is b Leaving Calibration Calibration is complete when the CAL icon goes out Pressing any 14 measurement key cancels
39. ns apply the User mode must be used Temperature Compensation Tempco and TDS Derivation below details the USER mode XXII TEMPERATURE COMPENSATION Tempco and TDS DERIVATION The Ultrameter II contains internal algorithms for characteristics of the 3 most commonly referenced compounds The solution type in use is displayed on the left Besides KCI NaCl and 442 there is the USER choice The benefit of USER mode is that one may enter the tempco and TDS conversion values of a unique solution via the keypad A Conductivity Characteristics When taking conductivity measurements the Solution Selection determines the characteristic assumed as the instrument reports what a measured conductivity would be if it were at 25 C The characteristic is represented by the tempco expressed in C If a solution of 100 uS at 25 C increases to 122 uS at 35 C then a 22 increase has occurred 41 over this change of 10 C The solution is then said to have a tempco of 2 2 C Tempco always varies among solutions because it is dependent on their individual ionization activity temperature and concentration This is why the Ultrameter II features mathematically generated models for known salt characteristics that also vary with concentration and temperature B Finding the Tempco of an Unknown Solution One may need to measure compensated conductivity of some solution unlike any of the 3 standard salts In order to enter a custom
40. on Reduction Potential or REDOX See ORP Oxidation Reduction Potential REDOX pg 45 Total Dissolved Solids or the Total Conductive lons in a solution See Conductivity Conversion to TDS pg 40 Temperature Compensation See Temperature Compensation pg 37 A mode of operation that allows the instrument user operator to set a tempco and or a TDS factor for their specific solution type See Temperature Compensation pg 37 and Temperature Compensation Tempco and TDS Derivation pg 41 For details on specific areas of interest refer to the Table of Contents 47 XXVI ADDENDUM 48 XXVII NOTES 49 MYRON L COMPANY 2450 Impala Drive Carlsbad CA 92010 7226 USA Tel 1 760 438 2021 Fax 1 760 931 9189 E Mail info myronl com techquestions myronl com www myronl com Made In USA UMIIOM 06JA10
41. on in a glass sleeve The same reference is used for both the pH and the ORP sensors Both pH and ORP will indicate O for a neutral solution Calibration at zero compensates for error in the reference junction A zero calibration solution for ORP is not practical so the Ultrameter II uses the offset value determined during calibration to 7 in pH calibration pH 7 0 MV Sensitivity of the ORP surface is fixed so there is no gain adjustment either 5 Sources of Error 6P The basics are presented in pH ORP pg 43 because sources of error 45 are much the same as for pH The junction side is the same and though the platinum surface will not break like the glass pH surface its protective glass sleeve can be broken A surface film will slow the response time and diminish sensitivity It can be cleaned off with detergent or acid as with the pH glass XXIV SOFTWARE VERSION Contact the Myron L Company to see if a software upgrade is available 1 Press key 2 Press key until three numbers are displayed as shown BO in Figure 35 3 Press key instrument will time out in 15 seconds Figure 35 46 XXV GLOSSARY Anions Algorithm Logarithm ORP TDS Tempco USER Negatively charged ions See Solution Characteristics pg 40 A procedure for solving a mathematical problem See Temperature Compensation and TDS Derivation pg 41 An arithmetic function See pH Units pg 43 Oxidati
42. ory calibrations stored in microprocessor 3 conductivity TDS solution conversions preprogrammed into microprocessor USER mode feature allows Programming your own cond TDS conversion factor Programming your own temperature compensation factor Disabling temperature compensation Real Time Clock with Time and Date Data Logging with TIME and DATE in memory Memory stores 100 readings Download capability with optional uUDock User adjustable timeout Auto OFF B General Specifications Display Dimensions LxWxH Weight Case Material Cond Res TDS Cell Material Cond TDS Electrodes 4 Cond Res TDS Cell Capacity pH ORP Sensor Well Capacity Power Battery Life Operating Storage Temperature Protection Ratings SABIC Innovative Plastics IP BV 4 Digit LCD 196 x 68 x 64 mm 7 7x2 7x2 5in 352 g 12 4 oz VALOX VALOX 316 Stainless Steel 5 ml 0 2 oz 1 2 ml 6P 0 04 oz 9V Alkaline Battery gt 100 Hours 5000 Readings 0 55 C 32 132 F IP67 NEMA 6 waterproof to 1 meter 3 feet Additional information is available on our website at www myronl com C C Specification Chart Ranges 0 14pH 999 mV 0 9999 uS cm 0 9999 ppm 10KQ 30MQ 0 71 C 10 200 mS cm 10 200 ppt 32 160 F in 5 autoranges in 5 autoranges Resolution 01 pH 1 mV 0 01 lt 100 pS 0 01 z100 ppm 01 2100 KQ 0 1 lt 1000 uS 0 1 21000 ppm 0 1 0 lt 10 mS 1 0 lt 10 ppt y 0 01 lt 100 mS
43. pass the CELL ch location DE The di splay will show Auto oFF see Figure 24 4 Press to initiate CAL GB will be displayed along with pi 15 SEC see Figure iS Figure 25 change the time see Figure 26 Maximum time is shown 5 Press o 6 Press to accept the OF change new time Figure 26 XV USER MODE CALIBRATION LINC FUNCTION Linc function allows easy calibration when in User mode and the user does not have a user standard solution to calibrate the instrument This function will ensure more repeatable and accurate measurements than many other calibration methods It is recommended that this function be used to provide the highest degree of confidence when the Ultrameter II is used in User mode When Linc is used the User mode is linked to another standard i e if User and KCI are linked a KCI standard solution is used to calibrate the instrument It is that simple A Calibration of Ultrameter II for use in User Mode 1 Press or key 2 Calibrate the unit using a Standard Solution ref CALIBRATION pg 14 3 Place the Ultrameter II in User mode ref SOLUTION SELECTION pg 11 27 4 Verify Set the calibration linc See below Setting User Mode Calibration Linc B Setting User Mode Calibration Linc The Linc function sets or links the calibration gain factor of a Standard Solution to the User solution mode Once set the
44. r solutions are traceable to NIST certified pH references and are color coded for instant identification They are also mold inhibited and accurate to within 0 01 pH units 25 C Order 4 7 or 10 Buffer Available in 2 oz quarts liters and gallon 3 8 liter bottles C pH Sensor Storage Solution 6P Myron L pH Sensor Storage Solution prolongs the life of the pH sensor Available in 2 oz quarts liters and gallon 3 8 liter bottles 36 D Soft Protective Carry Cases Padded Nylon carrying case features a belt clip for hands free mobility Two colors to choose from Blue Model UCC Desert Tan Model UCCDT E Hard Protective Carry Cases Large case with 2 oz bottles of calibration standard solutions KCI 7000 442 3000 4 7 4 10 pH buffers and pH storage solution Model PKUU Small case no calibration standard solutions Model UPP F Replacement pH ORP Sensor 6P pH ORP sensor is gel filled and features a unique porous liquid junction It is user replaceable and comes with easy to follow instructions Model RPR G uDock IR Data Port Accessory Package This accessory allows the operator to download the Ultrameter II memory stack to a spreadsheet on a computer The package includes a uDock software CD and installation and operating instructions Model U2CIP XX TEMPERATURE COMPENSATION Tempco of Aqueous Solutions Electrical conductivity indicates solution concentration and
45. rameter II one of the Myron L Company s latest in an increasing line of instruments utilizing advanced microprocessor based circuitry and SMT manufacturing processes This circuitry makes the instrument extremely accurate reliable and very easy to use The Ultrameter II incorporates several new features including a clock with time and date an increased memory of up to 100 locations with time and date stamp the ability of the user to adjust the timeout Auto OFF and enhanced performance See Features and Specifications on pages 2 amp 3 The most exciting new feature is data logging with the ability to download the memory or stored test data with its corresponding time and date This feature allows the user to create spreadsheets and graphs with ease and quickly and accurately manipulate data more effectively The optional uDock and software is compatible with most computers using either Microsoft Windows XP or 2000 or Macintosh OS9 2 or OSX The data may be imported into a variety of spreadsheet formats like Microsoft Excel CSV Please Note Although the Myron L Company has performed extensive testing we cannot guarantee compatibility of all applications and formats We suggest testing your application and format for compatibility before relying on it For your convenience on the bottom side of your Ultrameter IT is a brief set of instructions A waterproof pocket sized card with abbreviated instructions is also inclu
46. s megohm Unable to calibrate Film or deposits on electrodes Conductivity TDS Resistivity readings much 1 Contamination from previous lower than expected sample or from pH sensor well 2 Carbon dioxide in test sample 34 Corrective Action Check connections or replace battery Ref Battery Replacement pg 32 1 Recalibrate instrument 2 Thoroughly rinse sensor well 3 Recalibrate using fresh buffers Ref pH Buffer Solutions pg 36 Replace pH ORP sensor Ref Replacement pH ORP Sensor pg 37 Clean and rejuvenate sensor ref Cleaning Sensors pg 32 and recalibrate If no improvement replace pH ORP sensor ref Replacement pH ORP Sensor pg 37 Clean and rejuvenate sensor ref Cleaning Sensors pg 32 and recalibrate If no improvement replace pH ORP sensor ref Replacement pH ORP Sensor pg 37 1 Clean cell cup and electrodes Ref Cleaning Sensors pg 32 2 Minimize test sample exposure to air Ref Measuring Resistivity pg 10 Clean cell cup and electrodes Ref Cleaning Sensors pg 32 1 Rinse cell cup more thoroughly before measurement Ensure pH cap is snugly in place 2 See Measuring Resistivity pg 10 35 XIX ACCESSORIES A Conductivity TDS Standard Solutions Your Ultrameter II has been factory calibrated with the appropriate Myron L Company NIST traceable KCI NaCl and our own 442 standard solutions Most Myron L conductivity standard solution bottles
47. show a FAC SEL see Figure 20 Figure 20 4 Press GB to accept the resetting Display will return to Cond XIII CELL CHECK The cell check verifies the cleanliness of the conductivity T DS resistivity sensor In normal use the cell may become dirty or coated and require cleaning If the display is showing 00 when the cell cup is dry the sensor is probably clean However when testing high purity water in resistivity RES mode improved accuracy may be desired No matter what a manufacturer claims a sensor can and will become contaminated or coated therefore require cleaning A true 4 wire sensor as in the Ultrameter II helps to mitigate contamination but NO SENSOR IS 100 IMMUNE 1 Press ono 2 Press to display the D stored memory records Figure 21 3 Press repeatedly until D you pass the FAC SEL location The display will show a CELL ch see Figure 21 4 Press to test GB Figure 22 If cell is clean Good will momentarily be displayed see Figure 22 If cell is dirty CELL cLn will be displayed see Figure 23 ref Cleaning Sensors pg 32 XIV AUTO OFF Auto off allows the user to adjust the time the instrument is ON up to 75 seconds after each press of a key Default time is 15 seconds with 60 seconds in CAL calibration mode 1 Press cow Figure 24 26 2 Press to display the stored memory records 3 Press repeatedly until you
48. show three values referenced at 25 C Conductivity in microsiemens micromhos the ppm TDS equivalents based on our 442 Natural Water and NaCl standards All standards are within 1 0 of reference solutions Available in 2 oz quarts liters and gallon 3 8 liter bottles 1 Potassium Chloride KCl The concentrations of these reference solutions are calculated from data in the International Critical Tables Vol 6 The 7000 uS is the recommended standard Order KCL 7000 2 442 Natural Water 442 Natural Water Standard Solutions are based on the following salt proportions 40 sodium sulfate 40 sodium bicarbonate and 20 sodium chloride which represent the three predominant components anions in freshwater This salt ratio has conductivity characteristics approximating fresh natural waters and was developed by the Myron L Company over four decades ago It is used around the world for measuring both conductivity and TDS in drinking water ground water lakes streams etc 3000 ppm is the recommended standard Order 442 3000 3 Sodium Chloride NaCl This is especially useful in sea water mix applications as sodium chloride is the major salt component Most Myron L standard solution labels show the ppm NaCl equivalent to the conductivity and to ppm 442 values The 14 0 mS is the recommended standard Order NACL 14 0 B pH Buffer Solutions 6P pH buffers are available in pH values of 4 7 and 10 Myron L Company buffe
49. ter II must be in User linked mode in order to cancel the Linc ref SOLUTION SELECTION pg 11 1 Press Linked measurement key cow res or ros or ros Two solution icons will be shown in the left side of display User and another i e KCI 2 Press key until the menu Linc appears see Figure 27 3 Press key the instrument will display both SEL and the User Icon 4 Press key until User is the only solution icon being displayed 5 Press key 6 The User mode calibration Linc has now been canceled NOTES 1 To maintain repeatability use the same standard solutions for future calibrations 2 Calibration of the Ultrameter II Gain Factor for User mode is not available when the calibration linc has been established The other calibration functions i e Temperature Compensation C settings and TDS Ratio settings are still intact To perform a calibration of the User mode as described in User Calibration Conductivity TDS pg 15 the User Mode Linc should be canceled See above Canceling User Mode calibration Linc 3 Once a Linc has been established for User mode the Linc will apply 29 to all measurement modes using User solution selection i e TDS User Cond User or Res User XVI uDock IR DATA PORT INSTRUCTIONS Requires Myron L uDock accessory package Model U2CIP The Myron L uDock is powered via the USB port requir
50. tored will go into location 8 6 To clear all records After MEMORY pressing CD scroll down gt um CLF ALL will be displayed 2 see Figure 10 7 Press ES All records will Figure 10 be cleared X TIME and DATE The Time and Date may easily be changed as you travel A Setting TIME Time is always displayed in 24 hour time Example shown in Figure 11 16 05 equals 4 05 PM 1 Press cov 2 Press until the time is displayed stored readings PC OFF CLI ALL time i e 16 05 3 Press to initiate CAL will be displayed along with the time see Figure 11 Figure 11 22 4 Press the A or to change the time 5 Press to accept the change new time B Setting DATE Example shown in Figure 12 is in US format i e mo dy yr NOTE The default format is US Date format may be changed ref Date Format US and International Int pg 24 Figure 12 1 Press c00 2 Press repeatedly until the date is displayed stored readings PC OFF CLF ALL time date i e 01 05 05 January 5 2005 3 Press to initiate CAL will be displayed along with the YEAR see Figure 13 4 Press Do or En to change the YEAR 5 Press to accept the change new year 6 Press CA or 5 to change the month 7 Press to accept the change new month see Figure 14 Figure 14 23 XI 24 Press the E KO to change the day Press to accept G
51. ture so the further from pH 7 one is the more effect will be seen A pH of 11 at 40 C would be off by 0 2 units The Ultrameter II senses the sensor well temperature and compensates the reading B ORP Oxidation Reduction Potential REDOX 6P 1 ORP as an Indicator 6P ORP is the measurement of the ratio of oxidizing activity to reducing activity in a solution It is the potential of a solution to give up electrons oxidize other things or gain electrons reduce Like acidity and alkalinity the increase of one is at the expense of the other so a single voltage is called the Oxidation Reduction Potential with a positive voltage showing a solution wants to steal electrons oxidizing agent For instance chlorinated water will show a positive ORP value 2 ORP Units 6P ORP is measured in millivolts with no correction for solution temperature Like pH it is not a measurement of concentration directly but of activity level In a solution of only one active component ORP indicates concentration Also as with pH a very dilute solution will take time to accumulate a readable charge 3 The ORP Sensor 6P An ORP sensor uses a small platinum surface to accumulate charge without reacting chemically That charge is measured relative to the solution so the solution ground voltage comes from a reference junction same as the pH sensor uses 4 The Myron L ORP Sensor 6P Figure 34 pg 44 shows the platinum butt
52. ur 4 bottom screws Open instrument carefully Carefully detach battery from circuit board Replace with 9 volt alkaline battery Replace bottom ensuring the sealing gasket is installed in the groove of the top half of case Re install screws tighten evenly and securely NOTE Because of nonvolatile EEPROM circuitry all data stored in memory and all calibration settings are protected even during power loss or battery replacement However loss of time and date may occur if battery is removed for longer than 3 minutes 180 seconds C pH ORP Sensor Replacement 6P Order model RPR When ordering be sure to include the model and serial number of your instrument to ensure receipt of the proper type Complete installation instructions are provided with each replacement sensor D Cleaning Sensors 1 Conductivity T DS Resistivity The conductivity cell cup should be kept as clean as possible Flushing with clean water following use will prevent buildup on electrodes However if very dirty samples particularly scaling types are allowed to dry in the cell cup a film will form This film reduces accuracy When there are visible films of oil dirt or scale in the cell cup or on the electrodes use isopropyl alcohol or a foaming non abrasive household cleaner Rinse out the cleaner and your Ultrameter IT is again ready for accurate measurements 2 pH ORP 6P The unique pH ORP sensor in your Ultrameter II is a nonrefillable com
53. w and repeat this procedure 2 User Calibration Conductivity TDS Instrument must be in USER mode see Solution Selection pg 11 15 a Rinse conductivity cell three times with your standard b Refill conductivity cell with same standard C Press or ros then press twice in COND three times in TDS The CAL icon will appear on the display d Press A or to step the displayed value toward the standard s value or hold a key down to scroll rapidly through the reading e Press once to confirm new value and end the calibration sequence for this particular solution type 3 Resistivity Calibration Resistivity is the reciprocal of Conductivity Resistivity is calibrated only if conductivity is calibrated for the same solution type 4 Reloading Factory Calibration Cond or TDS If calibration is suspect or known to be incorrect and no standard solution is available the calibration value can be replaced with the original factory value for that solution This FAC value is the same for all Ultrameter IIs and returns you to a known state without solution in the cell The FAC internal electronics calibration which bypasses the electrodes and cell is not intended to replace calibration with conductivity standard solutions If another solution type requires resetting change solution type and repeat this procedure a Press or ros b Press D If in USER solution mode press CAL key twice if in Condu
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