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Related Manuals for Myron L MLJ-PS6SI
Summary of Contents for Myron L MLJ-PS6SI
- Page 1 ™ Operation Manual 16 November 10...
- Page 2 PLEASE NOTE: Because of our commitment to product improvement, the substance and style of this manual may change. When changes are made, the updated manual is posted for download in PDF format from the Myron L Website: www.myronl.com...
- Page 3 Instrument Illustration Reference pH/ORP Sensor Junction under (Replaceable) Glass pH Bulb Electrode pH Glass Electrode Conductivity Cell (Built-in Electrodes) Temperature pH/ORP Sensor Sensor Protective Cap Measurement Preprogrammed variable conductivity/ Units Of Measurement Parameter TDS ratios mS - millisiemens/cm (millimhos/cm) Conductivity µS - microsiemens/cm (micromhos/cm)
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Page 5: Introduction
INTRODUCTION Thank you for selecting the feature-packed P ™, 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. -
Page 6: Features And Specifications
FEATURES and SPECIFICATIONS A. Features • Bluetooth® wireless download capability with optional bluDock™ • ORP mV to ppm free chlorine conversion • Langelier Saturation Index & Hardness Calculator • Ranges: Conductivity, Min/Salt, TDS — 0-200,000 µS/ppm pH − 0-14 ORP − ±999 mV; 0.20-9.99 ppm free chlorine •... -
Page 7: Specification Chart
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 only. The Myron L Company assumes no other responsibility or liability. -
Page 8: Table Of Contents
TABLE OF CONTENTS Instrument Illustration ........i INTRODUCTION . - Page 9 VIII. CALIBRATION INTERVALS ......17 A. Suggested Intervals ..... . 17 B.
- Page 10 CONDUCTIVITY CONVERSION to TOTAL DISSOLVED SOLIDS (TDS) ... . 36 A. How it’s Done ......36 B.
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Page 11: Rules Of Operation
III. 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 well with test solution 3 times and refill. -
Page 12: Tds, Ph And Orp Keys
Sensor Storage Solution. After use, the pH/ORP sensor well must be refilled with Myron L pH Sensor Storage Solution, and the protective cap reinstalled securely (ref. -
Page 13: Up Or Down Keys
B. Maintenance of the pH/ORP Sensor 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 Sensor Storage Solution. If unavailable, you can use an almost saturated KCl solution, pH 4 buffer or at least a strong table salt solution. -
Page 14: Measuring Ph
Refill both sensor wells with sample. Press 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, you can use a strong KCl solution, a pH 4 buffer, or a saturated solution of table salt and tap water (ref. -
Page 15: Solution Selection
SOLUTION SELECTION A. Why Solution Selection is Available Conductivity, MIN/SALT, and TDS require temperature correction to 25°C values (ref. Standardized to 25°C, pg. 33). Selection determines the temperature correction of conductivity and calculation of TDS from compensated conductivity (ref. Cond. Conversion to TDS, pg. 36). B. -
Page 16: Calibration
In these first six sections, you have learned all you need to take accurate measurements. The following sections contain calibration, advanced operations and technical information. VII. CALIBRATION A. Calibration Intervals Generally, calibration is recommended about once per month with Conductivity or TDS solutions. Calibration with pH solutions should be checked twice a month. -
Page 17: Calibration Limits
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, just press to accept the present value as is. -
Page 18: Reloading Factory Calibration
standard’s value (7582 >7501) or hold a key down to cause rapid scrolling of the reading. 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 now and repeat this procedure. - Page 19 Press to verify pH calibration. If the display shows 7.00, skip the pH Zero Calibration and BUFFER proceed to section b. pH Gain Calibration. Figure 6 Press to enter calibration mode. The “CAL”, “BUFFER” and “7” annunciators will appear (see Figure 6). Displayed value will be the uncalibrated sensor.
- Page 20 b. pH Gain Calibration Important: Always calibrate or verify your P 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.
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Page 21: Orp Calibration
Press to accept 3rd point of calibration, which completes the Calibration procedure. Fill sensor well with Myron L Storage Solution and replace protective cap. 4. ORP Calibration 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 P has an electronic ORP calibration. -
Page 22: Conductivity, Min/Salt, Tds Practices
D. pH and ORP Practices to Maintain Calibration Keep the sensor wet with Myron L Storage Solution. Rinse away caustic solutions immediately after use. ORP calibration solutions are caustic, and ± 5% is considered very accurate. -
Page 23: Memory Storage
A. Memory Storage MEMORY While displaying a measurement, press to record the displayed value. °C “MEMORy” will appear COND and the temperature display Figure 9 will be momentarily replaced by a number (1-100) showing the position of the record. Figure 9 shows a reading of 1806 µS stored in memory record #4. -
Page 24: Time And Date
Press to measure sample and press to store reading in location #3. The next memory stored will go into location #8. MEMORY To clear all records: After pressing , scroll down. ALL” will be displayed “CL (see Figure 10). Figure 10 Press . -
Page 25: Setting Date
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. 22). Figure 12 Press Press repeatedly until the date is displayed (stored ALL, time, date, i.e. -
Page 26: Us & International Format
C. DATE FORMAT “US & International (Int)” Press Press repeatedly until the format is displayed (stored ALL, time, date, date format). readings, PC OFF, CL Press to change. Display will now indicate other format (see Figures 16 & 17). Press any measurement key or allow to automatically turn off. (see Figures 16 &17) Figure 16 Figure 17... -
Page 27: Total Return To Factory Settings
Press ; the display will change to the other unit. Press ; all temperature reading are now in degrees last shown. 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. -
Page 28: Auto Off
Press Press to display the stored memory records. Figure 21 Press repeatedly until you pass the FAC SEL location. The display will show a “CELL ch” (see Figure 21). Press to test. Figure 22 If cell is clean, Good will momentarily be displayed (see Figure 22). -
Page 29: Bludock™ Wireless Data Transfer Instructions
Additional drivers may be required. See our website for the latest information. B. Hardware Setup For a computer without Bluetooth capability: If you don’t have the dongle that came with the BLUDOCK, one can be ordered separately from the Myron L Company. Order Model # BDDO. -
Page 30: Memory Stack Download
Once downloaded, the data may be manipulated, printed or stored within the Myron L U2CI application, or the data may be exported to another more powerful spreadsheet such as Excel*. -
Page 31: Care And Maintenance
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 assigning a name to the instrument, setting time and date and erasing data are available. See U2CI software installation CD or visit our website for the latest instructions: http://myronl.com/main/U2CI_Application_DL.htm Upon completion, click on the “disconnect”... -
Page 32: Cleaning Sensors
Then use one of the following methods: 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. - Page 33 Leaving high pH (alkaline) solutions in contact with the pH sensor for long periods of time is harmful and will cause damage. Rinse such liquids from the pH/ORP sensor well and refill it with Myron L Storage Solution to extend the useful life of the sensor. If unavailable, you can...
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Page 34: Troubleshooting
XVII. TROUBLEShOOTING ChART Symptom Possible Cause No display, even though Battery weak or not connected. measurement key pressed Inaccurate pH readings 1. pH calibration needed (ref. pH Cal., pg. 14). 2. Cross-contamination from residual pH buffers or samples in sensor well. - Page 35 Corrective Action Check connections or replace battery (ref. Battery Replacement, pg. 27). 1. Recalibrate instrument. 2. Thoroughly rinse sensor well. 3. Recalibrate using fresh buffers (ref. pH Buffer Solutions, pg. 32). Replace pH/ORP sensor (ref. Replacement pH/ORP Sensor, pg. 33). Clean and rejuvenate sensor (ref.
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Page 36: Accessories
7500 ppm is the recommended standard. Order NACL-7500. B. pH Buffer Solutions pH buffers are available in pH values of 4, 7 and 10. Myron L Company buffer solutions are traceable to NIST certified pH references and are color-coded for instant identification. They are also mold inhibited and accurate to within ±... -
Page 37: Hard Protective Carry Cases
Two colors to choose from; Blue - Model #: UCC Desert Tan - Model #: UCCDT ® Registered trade mark of DuPont E. Hard Protective Carry Cases Large case with 2 oz. bottles of calibration standard solutions (KCl-7000, NaCl-7500, 442-3000, 4, 7, & 10 pH buffers and pH storage solution). Model #: PKPS Small case (no calibration standard solutions) - Model #: UPP F. -
Page 38: An Example
varies with concentration and temperature in a non-linear fashion. Other solutions have more variation still. The P 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% % / °C 2.000% 1.900% 1.800%... -
Page 39: A Chart Of Comparative Error
D. A Chart of Comparative Error In the range of 1000 µS, the error using KCl on a solution that should be compensated as NaCl or as 442, is illustrated in the graph below. 442 error with KCl tempco NaCl error with KCl tempco (1)% Temperature (2)%... -
Page 40: Conductivity Conversion To
(anions) in freshwater that the Myron L Company calls “natural water”. These are modeled in a mixture called “442™” which the Myron L Company markets for use as a calibration standard, as it does standard KCl and NaCl solutions. -
Page 41: Temperature Compensation (Tempco)
water to be pretreated by RO. Assume it is 45°C and reads 1500 µS uncompensated. If NaCl compensation is used, an instrument would report 1035 µS compensated, which corresponds to 510 ppm NaCl. If 442 compensation is used, an instrument would report 1024 µS compensated, which corresponds to 713 ppm 442. -
Page 42: Ph And Orp
XXII. ph and ORP A. pH 1. pH as an Indicator pH is the measurement of Acidity or Alkalinity of an aqueous solution. It is also stated as the Hydrogen Ion 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. - Page 43 Electrode wire with test solutions. See pH/ORP, pg. 38. KCl solution Figure 30 4. The Myron L Integral pH Sensor The sensor in the P (see Figure 31) is a single construction ions in an easily replaceable package.
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Page 44: Orp/Oxidation-Reduction Potential/Redox
“ground” voltage comes from a reference junction - same as the pH sensor uses. 4. The Myron L ORP Sensor Figure 31, pg. 39, shows the platinum button in a glass sleeve. The same reference is used for both the pH and the ORP sensors. Both pH and ORP will indicate 0 for a neutral solution. -
Page 45: Software Version
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. Press key. Press key until three numbers are displayed as shown in Figure 32. -
Page 46: Glossary
XXIV. GLOSSARy Anions Negatively charged ions. See Solution Characteristics, pg. 36. Algorithm A procedure for solving a mathematical problem. See Temperature Compensation and TDS Derivation, pg. 37. Logarithm An arithmetic function. See pH Units, pg. 38. Mineral A term used in the pool & spa industry for SALT (Sodium Chloride - NaCl). -
Page 47: Addendum: New Orp Ppm
5-9 in water sanitized by chlorine only and bench testing performed at the Myron L Company. We have increased the accuracy of low-range ppm free chlorine readings by extrapolating from the published data. With... - Page 48 Press the keys to toggle between mV and ppm free chlorine measurement format. The setting chosen is displayed (ppm shown as example below). Press any parameter key to exit ORP unit preference selection or let the unit time out. ORP unit preference will be saved.
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Page 49: Calculator
XXVI. ADDENDUM: NEW LSI & hARDNESS CALCULATOR The new LSI calculator makes it easy to analyze the scaling nature of water in the lab or in the field. Using a calcium carbonate saturation index algorithm developed by Dr. Wilfred Langelier in 1936, the calculator computes the saturation index of a sample based on measured and inferred values for pH, temperature, hardness and alkalinity. -
Page 50: Lsi Calculator Mode
LSI Calculator Mode Press any parameter key to turn the instrument on. To access the LSI calculator, Figure 38 press repeatedly or hold down (fast scroll) until “CALC LSI” is displayed (see Figure 38). . “FILL LSI” will Press display (see Figure 39). Figure 39 Rinse both the pH/ORP sensor well and the conductivity cell... -
Page 51: Lsi Calculator "User" Mode
The temperature value measured by the PS6SI and “°C” or “°F” will display (see example in Figure 43). °C Press Figure 43 The PS6SI generated LSI value will display (see example in Figure 44). To store this LSI value in memory, press If you do not wish to change any of the variable values,... - Page 52 Press to accept the value displayed. The PS6SI inferred value for hardness and “hrd” will Figure 47 display (see example in Figure 47). Press the keys to adjust the displayed value to the desired value. Press to accept the value displayed. The pH value measured by the PS6SI and “Ph”...
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Page 53: Hardness Unit Preference Selection
hardness Unit Preference Selection The LSI Calculator allows you to select either ppm or grains of hardness units for saturation index calculation. The hardness unit conversion is based on the following equivalency: 17.1 ppm (mg/L) = 1 grain The hardness range is limited to 0.0 - 1710 ppm and 0.0 - 100 grains of hardness in the PS6SI. - Page 56 MyRON L COMPANy 2450 Impala Drive Carlsbad, CA 92010-7226 Tel: +1-760-438-2021 Fax: +1-760-931-9189 www.myronl.com Made In USA PS6OM 16NO10...
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