POOLPRO™ Operation Manual MODEL PS6FCE 17 June 2013
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.
Instrument Illustration Reference Junction under Glass pH Bulb pH/ORP Sensor (Replaceable) ORP Electrode pH Glass Electrode Conductivity Cell (Built-in Electrodes) Temperature Sensor pH/ORP Sensor Protective Cap Measurement Preprogrammed variable conductivity/ TDS ratios Units Of Measurement mS - millisiemens/cm (millimhos/cm) µS - microsiemens/cm (micromhos/cm) PPM - parts per million °C°F Date & Time displayed here COND Parameters ORP BUFFER pH TDS mV - millivolts PPM - parts per million
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I. INTRODUCTION Thank you for selecting the feature-packed PoolPro™, 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.
II. • • • • • • • • • • • • • • • • FEATURES and SPECIFICATIONS A. Features ORP-based FCE free chlorine measurement, displayed as ppm concentration Ranges: Conductivity, Min/Salt, TDS — 0-200,000 µS/ppm pH − 0-14 ORP − ±999 mV; 0.00-9.99 ppm free chlorine Superior resolution 4 digit LCD displays full 9999 µS/ppm Accuracy of BETTER than ±1% of reading in a handheld instrument ±0.
C. Specification Chart Mineral/Salt* * NaCl - Sodium Chloride If either ORP or pH is outside the specified limits, the instrument will display “-Or-”. D. Warranty/Service The Myron L PoolPro™, excluding the pH/ORP sensor, has a Two (2) year limited warranty. The pH/ORP sensor 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.
TABLE OF CONTENTS Instrument Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i I. II. III. IV. V. VI. VII. 4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 FEATURES and SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 2 A. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 B. General Specifications . . . . . . .
VIII. IX. X. XI. XII. XIII. XIV. XV. XVI. XVII. XVIII. XIX. 1. Conductivity, MIN/SALT &TDS Calibration . . . . . . . . . . . . . . . . . . . . 17 2. Reloading Factory Calibration . . . . . . . . . 18 3. pH Calibration . . . . . . . . . . . . . . . . . . . . . 18 4. ORP/Fr Chl Calibration . . . . . . . . . . . . . . 21 5. Temperature Calibration . . . . . . . . . . . . . 21 CALIBRATION INTERVALS . . . . . . . . . . . . . . .
XX. XXI. XXII. XXIII. XXIV. 6 A. Standardized to 25°C . . . . . . . . . . . . . . . . . . . . . . B. Tempco Variation . . . . . . . . . . . . . . . . . . . . . . . . . C. An Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D. A Chart of Comparative Error . . . . . . . . . . . . . . . . E. Other Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . CONDUCTIVITY CONVERSION to TOTAL DISSOLVED SOLIDS (TDS) . . . . . . . . . . . . . A.
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. Temperature and/or measurement extremes will require additional rinses for maximum accuracy. • Press the desired measurement key to start measurement.
b. MIN/SALT key A press of MIN displays Total Dissolved Solids with units (PPM & SALT PPT). on the right. On the left is shown solution type selected (NaCl) for mineral/salt (ref. Solution Selection, pg. 14). An overrange condition will show only [- - - -]. 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.
5. UP or DOWN Keys While measuring in any parameter, the 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. 23). IV. AFTER USING the PoolPro A.
1. B. Measuring pH Remove protective cap by squeezing its sides and pulling up. 2. 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 5. Note value displayed. 6. IMPORTANT: After use, fill pH/ORP sensor well with Myron L pH Sensor Storage Solution and replace protective cap.
Figure 1 3. Press the or keys to toggle between mV (standard ORP mode) and FCE ppm. The setting chosen is displayed. (See Figure 2.) PPM Figure 2 4. Press any parameter key to exit ORP unit preference selection or let the unit time out. ORP unit preference will be saved. 1. 2. Measuring ORP Ensure the PS6FCE is in ORP mode (ref. ORP/FCE Mode Selection, pg. 10). 2. Remove protective cap by rotating while grasping and pulling up. 3.
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. Cleaning Sensors, 2. pH/ORP, pg. 32). Do not allow pH/ORP sensor to dry out. D. Measuring Free Chlorine Using FCE The FC function can be used to measure discrete samples, flowing solution and bodies of water. Measurement technique is particular to the type of sample.
7. Wait for the readings to stabilize. When the mV and ppm values are unchanging for 5 consecutive readings, the FCE reading has reached a stable level. This may take 1 to 2 minutes. NOTE: If the reading takes more than 1 minute to stabilize, press the from disturbing the measurement process. Annunciators will alert you when either the pH or ORP of the final FCE ppm value are Out of Range (“-Or-”). 8. Press MS to store reading in memory if desired.
4. FCE Best Practices For best results it is recommended that you: 1. Take 3 consecutive FCE measurements and record the readings. 2. Calculate the average of the 3 measurements. Use this value. 3. Ignore measurements that are significantly different from the others. Ex: 3.20 ppm, 1.15 ppm, 3.10 ppm IMPORTANT: After use, fill pH/ORP sensor well with Myron L pH Sensor Storage Solution and replace protective cap.
D. Procedure to Select a Solution NOTE: Check display to see if solution displayed (KCl, NaCl, 442) is already the type desired. If not: , MIN or 1. Press to select the parameter on which you wish to change the solution type. 2. Press and hold for 3 seconds to make “SEL” appear (see Figure 3). (For demonstration purposes, all 3 solution types are shown simultaneously.) 3. Use the (ref. Solution Characteristics, pg. 40).
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. Calibration of ORP is not necessary (ref. CALIBRATION INTERVALS, pg. 21). B. Rules for Calibration of the PoolPro 1. Calibration Steps a. Starting Calibration Calibration is begun by pressing while measuring Conductivity, MIN/SALT, TDS or pH.
The 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 value as is. to accept the present b. Leaving Calibration Calibration is complete when the “CAL” icon goes out. Pressing any measurement key cancels changes not yet accepted and exits calibration mode.
>7501) or hold a key down to cause rapid scrolling of the reading. e. Press calibration sequence for this particular solution type. If another solution type is also to be measured, change solution type now and repeat this procedure. once to confirm new value and end the 2.
3. 4. Press to verify pH calibration. If the display shows 7.00, skip the pH Zero Calibration and proceed to section b. pH Gain Calibration. Press CAL BUFFER pH Figure 5 to enter calibration mode. The “CAL”, “BUFFER” and “7” annunciators will appear (see Figure 5). 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 PoolPro will not adjust.
b. pH Gain Calibration Important: Always calibrate or verify your PoolPro 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 “bAS”. 1. The pH calibration mode is initiated by either completion of the 2.
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: 7. Repeat steps 3 through 6 using opposite buffer solution. 8. Press completes the Calibration procedure. Fill sensor well with Myron L Storage Solution and replace protective cap.
Calibration is purposely limited in the PoolPro to ±10% for the conductivity cell because more than that indicates damage, not drift. Likewise, calibration changes are limited to ±1 pH unit because more than that indicates the end of the sensor’s lifetime, and it should be replaced. C. Conductivity, MIN/SALT, 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 the cell. 2.
1. A. Memory Storage While displaying a measurement, press to record the displayed value. 2. “MEMORY” will appear COND and the temperature display Figure 8 will be momentarily replaced by a number (1-100) showing the position of the record. Figure 8 shows a reading of 1806 µS stored in memory record #4. 1. B. Memory Recall Press any measurement key. 2. Press show the last record stored. 3.
4. Press to measure sample and press to store reading in location #3. 5. The next memory stored will go into location #8. 6. To clear all records: After pressing “CLr ALL” will be displayed (see Figure 9). MEMORY , scroll down. Figure 9 7. Press . All records will 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. 24 1.
B. Setting DATE Example shown in Figure 11, 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. 26). Figure 11 1. Press . 2. Press readings, PC OFF, CLr ALL, time, date, i.e., 01/24/12 (January 24, 2012)). 3. Press YEAR, (see Figure 12). 4. Press change the YEAR. 5. Press change (new year). 6. Press change the month. 7. Press change (new month), (see Figure 13).
C. DATE FORMAT “US & International (Int)” 1. Press 2. Press readings, PC OFF, CLr ALL, time, date, date format). 3. Press (see Figures 15 & 16). 4. Press any measurement key or allow to automatically turn off. . repeatedly until the format is displayed (stored to change. Display will now indicate other format Figure 15 XI. TEMPERATURE FORMAT “Centigrade & Fahrenheit” 1. Press 2. Press to display the stored memory records. 3.
4. Press ; the display will change to the other unit. 5. 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.
1. Press . 2. Press stored memory records. 3. Press you pass the FAC SEL location. The display will show a “CELL ch” (see Figure 20). 4. Press If cell is clean, Good will momentarily be displayed (see Figure 21). If cell is dirty, “CELL cLn” will be displayed (see Figure 22), (ref. Cleaning Sensors, pg. 32). to display the repeatedly until Figure 20 to test. Figure 21 Figure 22 XIV.
to initiate. CAL 4. Press will be displayed along with the “15 SEC” (see Figure 24). 5. Press change the time (see Figure 25). Maximum time is shown. 6. Press change (new time). or to CAL Figure 24 CAL to accept the Figure 25 XV. bluDock™ Wireless Data Transfer INSTRUCTIONS NOTE: Bluetooth® is a registered trademark of Bluetooth SIG. The bluDock Bluetooth module is a registered Bluetooth device. Requires Myron L bluDock™ accessory package, Model # BLUDOCK.
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. Plug in your dongle and install per manufacturer’s instructions. For computers with Bluetooth capability/ Bluetooth dongle installed: First time use of the bluDock: 1. Press any parameter button to turn the PoolPro on. 2.
data transfer bar will appear while the data is being downloaded. 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 spreadsheet1 such as Excel2. 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 4.
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/TDS/MIN/SALT 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.
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.
XVII. 34 TROUBLESHOOTING CHART Symptom Possible Cause No display, even though measurement key pressed Battery weak or not connected. Inaccurate pH readings 1. pH calibration needed. Ref. pH Cal., pg. 18. 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 electromechanical short caused by an internal crack. Will not adjust down to pH 7 pH/ORP sensor has lost KCl.
Corrective Action Check connections or replace battery. Ref. Battery Replacement, pg. 31. 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.
XVIII. ACCESSORIES NOTE: MSDSs are available on the Myron L website for all solutions: http://www.myronl.com/main/Material_Safety_DS_DL.htm A. Conductivity/TDS Standard Solutions Your PoolPro has been factory calibrated with the appropriate Myron L Company NIST traceable KCl, NaCl, and our own 442™ standard solutions.
E. 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 ® Registered trade mark of DuPont F. 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 G.
varies with concentration and temperature in a non-linear fashion. Other solutions have more variation still. The PoolPro 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% KCl % / °C 1.700% 1.600% 1.500% Temperature 0 5 10 15 20 25 30 35 40 45 50 55 60 Chart 1 C.
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 Chart 2 below. 7% 442 error with KCl tempco 6% NaCl error with KCl tempco 5% 4% 3% 2% 1% 0% (1)% (2)% Temperature 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 “442” values or stay close to 25°C.
units” to compare to older published data, in terms of NaCl or 442, or may be appropriate. The PoolPro can be used to reconcile data taken with other compensation assumptions. XX. CONDUCTIVITY CONVERSION to TOTAL DISSOLVED SOLIDS (TDS) Electrical 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.
water to be pretreated by RO. Assume it is 45°C and reads 1500 µS uncompensated. 1. If NaCl compensation is used, an instrument would report 1035 µS compensated, which corresponds to 510 ppm NaCl. 2. If 442 compensation is used, an instrument would report 1024 µS compensated, which corresponds to 713 ppm 442. The difference in values is 40%.
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. pH provides the needed quantitative information by expressing the degree of activity of an acid or base.
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 the test solution without significant Glass surface migration of liquids through the Junction H+ ions plug material. Figure 30 shows Plug a typical 2 component pair.
c. Temperature Compensation pH sensor glass changes its sensitivity slightly with temperature, 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 PoolPro senses the sensor well temperature and compensates the reading. B. ORP/Oxidation-Reduction Potential/REDOX 1. ORP as an Indicator ORP is the measurement of the ratio of oxidizing activity to reducing activity in a solution.
C. Free Chlorine 1. Free Chlorine as an Indicator of Sanitizing Strength Chlorine, which kills bacteria by way of its power as an oxidizing agent, is the most popular germicide used in water treatment. Chlorine is not only used as a primary disinfectant, but also to establish a sufficient residual level of Free Available Chlorine (FAC) for ongoing disinfection.
XXIII. 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 in Figure 32. 3. Press will time out in ~15 seconds.
XXIV. GLOSSARY Anions Negatively charged ions. See Solution Characteristics, pg. 40. Algorithm A procedure for solving a mathematical problem. See Temperature Compensation and TDS Derivation, pg. 41. FAC Free Available Chlorine. The amount of chlorine that remains active in solution and is available for ongoing disinfection. See Free Chlorine as an Indicator, pg. 45.
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