SP-900 User`s Manual
Contents
1. PYXIS SP 900 Portable Water Analyzer Operation Manual Rev B Firmware version 1 17 Pyxis Lab Inc 2012 All Rights Reserved Pyxis Lab Inc PO Box 802 Hopkinton MA 01748 USA www pyxis lab com service xis lab com PIKIS 1 Contents 1 General Descriptions disaient seuss eoe 1 1 1 Pyxis Major 1 1 2 Unpackaging the Instrument ss 2 1 3 Standard Accessories 3 1 4 Optional Accessories 3 1 5 Sample Vial Compartment ss 3 16 LightShield COVER he eir venen e v oae 3 Start PyxisS SP O00 1 eccsoscatsenebessseceseanvecebestes ivre Wee Ru 5 2 1 Battery installation iter cate tede Rec is caesi REDDE 5 2 2 Description of the Keypad 5 2 3 Turning On Pyxis 5 900 een 6 pNEPUMEDRIIM T 6 2 4 Turning Off Pyxis SP 900 aas 7 2 5 OnScreen Keyboard ice cette ceti tete ovas 7 2 6 Pyxis SP 900 Auto Power Off 7 2 7 Auto LCD Power Saving ss 7 PTSA Measurement eter e ex ne Rp Xe ne xU Rex Ee ani 8 3 1 Meas remient ee eee tr ber ere eas 8 3 2 PTSA Product Setup 8 3 3 PTSAcalibratiOmn 2 certe terrere ree Tree entre ee tn Henne 9 Colorimetric Measurement 11 4 1 Supported Methods 11 4 2 Select a Method 12 43 Single2. a white LED as the excitation source Pyxis SP 900 is pre calibrated for colorimetric measurements of analytes common in industrial water treatment and other PIKIS water testing in the laboratory or in the field such as chlorine phosphate iron and copper Main features include is pre calibrated for measuring PTSA pyrenetetrasulfonic acid in the range of 0 to 300 ppb The fluorescence PTSA measurement is automatically compensated for sample color and turbidity interference Specially designed for water treatment companies PTSA measurement displays product concentration in ppm along with the product name or PTSA in ppb The user can choose a product name from a user defined dropdown list of 5 product names Automatically select the primary wavelength according to the method selected and switches to the secondary wavelength to extend the primary measurement range Sample yial Sample Vial Compartment Light Shield Cover __ Navigational Control Pad LCD i Figure 1 Insert the Sample Vial Display a concentration time profile curve during the last time period in a colorimetric measurement The user can terminate the timing process and take a reading if the displayed concentration reaches a plateau before completing the predefined time period The user can update the calibration parameter of any pre calibrated colorimetric method by testing a standard solution first and then fol
3. as PAA 1 80 ppm Move the icon focus to the method icon MthD using the navigational left right up or down keys Press OK on the icon to launch the first method selection page The methods shown on the top row of the page are the most frequently selected methods PORES 68 9 F LITT YT 1 C1 F 0 04 gt OrgP PHoY AZOL FeHo FePh Fezi FeTp CuBi SiHR SiLR CaMg DEHA NO L H 2H S04 C102 C102 Figure 8 Method Selection The followings are the operations associated with this page 1 Use the navigational keys and the OK key to select and launch a method 2 Press the arrow icon gt at the end of the favorite methods row to return to the main page Press the arrow icon at the lower right corner of the page to display the second method selection page if the device is loaded with more than 23 methods Note Methods shown in the method selection pages include Hach equivalent methods and Pyxis specific advanced methods The table in Appendix A provides a 12 PYKIS brief description of Pyxis method names and their corresponding Hach program number Hach reagents for 10 ml sample can be used for the test 4 3 Single Timing Step Method Most of colorimetric methods have only one timing step As an example in the DPD total chlorine method it takes three minutes for the DPD powder reagent to completely react with chlorine in the water sample The DPD total chlorine method has a sing
4. concentration for the method table 2 and greater than the half of the maximum concentration For example to calibrate total chlorine the chlorine concentration in the standard solution should be between 1 1 and 2 2 ppm The corresponding calibration parameters will be updated and saved in the memory as the working calibration parameter set Note that this set of calibration parameters are not the same as the default set You can use RSM_DEFAULT button to copy the default calibration parameters to the working set Reagent Blank Calibration Some methods have a non zero intercept value in the calibration equation For these methods a proper non zero intercept value is pre loaded in SP 900 prior to shipping The following steps are used to carry out a reagent blank calibration 1 Follow the normal steps to carry out a measurement on a deionized water sample 2 Press the CONFG button to launch the method configuration page Press the reagent blank calibration button BIKCal 4 Press the OK key to save when exiting from the configuration page or press other keys to cancel e Resume to Default Calibration Parameters Pressing the RSM Default button will copy the default calibration intercept and slope to the working intercept and slope respectively If the default calibration parameters were created prior to shipping this button action is to restore the working calibration parameters to the original factory loaded calibration parame
5. for 3 seconds and release the OK key when the LCD is lit After new batteries installation Pyxis SP 900 will be automatically turned on and its LCD backlight will be on You can navigate the main page menu and launch an operation by pressing on an icon If battery voltage is too low for the instrument to work properly Pyxis SP 900 will show a low battery warning message for 5 seconds and turn off automatically If this happens replace all four batteries 2 4 Main Page Pyxis SP 900 provides intuitive icon menu assisted user operations On the main page eight major feature groups are illustrated as below PIKES 65 0 F CD o7 PTSA Mthd FCal TCal STBY Turb Absh Diag Figure 4 Main Menu A brief description of each feature group is given in Table 1 Detailed operation instructions can be found in the following chapters Table 1 Feature Groups on Main Menu No Title Description 1 PTSA PTSA measurement 2 Mthd Colorimetric measurement methods 3 FCal Calibration routine for PTSA 4 TCal Calibration routine for turbidity 5 STBY Standby changes SP 900 to a low power mode 6 Turb Turbidity measurement 7 Absb Absorbance measurements 8 Diag Diagnosis PYKIS 2 4 Turning Off Pyxis SP 900 Turn Pyxis SP 900 off by navigating to STBY icon and press the OK key 2 5 On Screen Keyboard Pyxis SP 900 provides an on screen keyboard when user input is needed If the c
6. from other portable colorimeters having only light sources in the visible range Select CIO2D in the method selection page and carry out the following steps to measure chlorine dioxide 1 Place a vial filled with deionized water into the vial compartment and press the ZERO button to zero Pyxis SP 900 2 Discard the deionized water and fill the same vial with the sample Place the vial into the vial compartment and press READ button to read The measured chlorine dioxide concentration will be displayed in the top of the method page Turbdimetric Anionic Polymer Method 1 Add polymer reagent 1 to 10 ml sample and inverse the sample vial 5 times to mix the reagent with the sample Place the sample via to the sample vial compartment 2 Press on ZERO Add polymer reagent 2 and press on TMR1 to start the five minutes timer 4 Gently inverse the sample via for 10 times and place the sample vial to the sample vial compartment 5 Polymer concentration will be measured and displayed when the five minute timer is reached The polymer concentration is shown as ppm PAA polyacrylic acid equivalent e 4 8 Method Setup and Calibration Press the SETUP button in the method result page to launch the method setup and calibration page 4 8 1 Setup the method parameters Press the FORM button to select a concentration form from the list of forms that are available for this specific method Figure 12 Press the UNIT button to select a conce
7. the prepared blank into the Pyxis SP 900 sample vial compartment and press the ZERO button Place the prepared sample into the Pyxis SP 900 sample vial compartment and press the TMR2 button to start the second timer Pyxis SP 900 will display the measured concentration as a function of time as shown in Figure 10 When the timing step is completed the measured concentration will be displayed on the top right of the screen The timing step could be terminated earlier by pressing STOP button Optionally Pyxis SP 900 can be re zeroed using the prepared blank after the timing step is completed or terminated The blank reading will be subtracted from the measured concentration value and the displayed concentration value on the top right corner will be updated This step is optional It is only necessary if the prepared blank changes its color during the timing period 4 7 Advanced Methods 15 PIKIS Pyxis SP 900 provides 6 LED wavelengths and can measure absorbance values at multiple LED wavelengths Consequently Pyxis SP 900 can provide many predefined advanced methods that traditionally require complex and often expensive lab testing procedures Low range direct reading chlorine dioxide 0 to 35 0 ppm The maximum absorption bank of aqueous chlorine dioxide is around 360nm Pyxis SP 900 has a 365nm UV LED and can be used to directly measure chlorine dioxide It offers a much lower detection limit 0 2 ppm than direct methods available
8. 7 FeTp FeTptz Iron TPTZ PRMP 39 MoHR Mo HighRange Molybdenum High Range Mercaptoacetic Acid PRMP 44 MoLR Mo LowRange Molybdenum Low Range Ternary Complex PRMP 47 NO2H NO2H Nitrite High Range Ferrous Sulfate PRMP 59 NO2L NO2L Nitrite Low Range Diazotization PRMP 60 PMoV OPO4 MoV Phosphorus Reactive Molybdovanadate GRMP 77 OPO4 OPO4 Phosphorus Reactive Orthophosphate Ascorbic Acid GRMP 79 OrgP Phosphonate Phosphonates Persulfate UV Oxidation PRMP 80 PAmi OPO4 Amino Phosphorus Reactive Amino Acid GRMP 85 CIO2 CIO2 DPD Chlorine Dioxide DPD PRMP 112 CIO2D CIO2Direct Direct Pyxis SiHR SiHR Silica High Range Silicomolybdate PRGM 89 SiLR SiLR Silica Low Range Heteropoly Blue PRMP 90 AZOL Azole Benzotriazole UV Photolysis PRMP 3 504 504 Sulfate PRMP 7 POLY Polymer Turbidimetric method for anionic polymers FeMo FeMo Iron for cooling water with molybdenum based treatment PRMP 38 Cr6 Cr6 Hexavalent chromium 1 5 Diphenylcarbohydrzaide Method PRMP 13 NH3S NH3Sal Ammonia Salicylate Method PRMP 64 MnL MnLow Low Range Manganese PAN Method PRMP 43 MnH MnHigh High Range Manganese Periodate Oxidation Method PRMP 41 BLCH Bleach Direct Method measuring sodium hypochlorite concentration NH2C NH2CI Indophenol Method for MonoChloramine PRMP 110 CrT CrTot Alkaline Hypobromite Oxidation Method for Total 23 PPS Chromium PRMP 15 AI Alumi Alumino
9. Timing Step nce e Er eet Ci eee eed 13 4 4 One Vial Procedure rt 13 4 5 Two Vial Methods 14 4 6 Multiple Timing Steps M nnn 14 4 7 Advanced Methods sese 15 4 8 Method Setup and Calibration ss 16 5 Turbidity Measurement Ne ne 19 5 1 Operation 19 5 2 Turbidity Calibration enne 19 6 Absorbance Measurement eese 20 Z WANG ANGE sss circ ond nine 21 B een nn MERI DI EE 22 Appendix A Pyxis Methods and Hach Methods Cross Reference 23 TH PIKIS Figures Figure 1 Insert the Sample Vial 2 Figure 2 Open and Close the Light Shield Cover 4 Figure 3 Battery Replacement 5 Figure 4 Main Menu Error Bookmark not defined Figure 5 PISA Measurement 8 Figure 6 Product ped eens es exe Eo e Y 9 Figure 7 PTSA Calibration teet oe ERR ie teen 10 Figure 8 Method Selection 12 Figure 9 Single Timing Method sees enne nnn 13 Figure 10 Concentration as a Function of Time 14 Figure 11 Multiple Timer Method 15 Figure 12 Method Form Selection 17 Figure 13 Method Unit Selection 17 Figure 14 Slope Calibration ccccccccccccscssssssssecececessesesneaeeeeecessessasaeeeeseeses 18 Figure 15 Turbidity Calibration enne 19 F
10. d for reporting wasterwater analysis FerroZine method Total iron using TPTZ High range molybdate Low range molybdate using ternary complex method High range nitrite ferrous sulfate method Low range nitrite diazotization method USEPA approved for reporting wastewater and drinking water analysis Reactive phosphate using molybdovanadate method Reactive phosphate using ascorbic acid molybdenum blue method USEPA accepted for wastewater analysis UV digestion and ascorbic acid reduction molybdenum blue method Reactive phosphate amino 11 Range 2 2 ppm 2 2 ppm 5 0 ppm 0 5 ppm 4 00 ppm as CaCOs 3 00 ppm 1 300 ppm 1 80 ppm 40 0 ppm 3 0 ppm 150 ppm as NO 0 350 ppm as NO 30 0 ppm as PO 2 5 ppm as PO 7 1 ppm as PBTC 30 0 ppm PIKIS Abbreviated Method Name CIO2 CIO2D SiHR SiLR AZOL 504 POLY FeMo Method Name CIO2 DPD ClO2Direct SiHR SiLR Azole SO4 Polymer FeMo 4 2 Select a Method Description acid reduction method DPD method USEPA accepted for reporting drinking water analysis Direct method for chlorine dioxide High range silica Low range silica UV digestion for tolyltriazole and benzotriazole Barium sulfate turbdimetric method Turbidimetric method for anionic polymeric dispersant Total iron method for water containing molybdate Range 5 00 ppm 35 0 ppm 75 0 ppm as SiO 1 60 ppm as SiO2 16 0 ppm 70 0 ppm 13 0 ppm
11. d to the customer 1 General Description Specification e Colorimeter Wavelength e Turbidity Excitation Wavelength e Fluorescence Excitation Wavelength e Fluorescence Emission Wavelength e Wavelength Accuracy e Absorbance Reproducibility e Absorbance Linearity Range e Fluorescence Reproducibility e Fluorescence Detection Limit e Turbidity Reproducibility e Turbidity Detection Limit e Battery e Typical Battery Life e Display e Instrument Dimension e Instrument Weight e Storage Temperature Range e Operation Temperature Range e Humidity e Environmental 365 420 455 525 560 570 and 630nm White LED 90 degree scattering 365 nm LED 410 nm tinm 0 005 au in the range of 0 to 1 0 au 3sigma 0 to 1 0 au 1 ppb PTSA 3 sigma 1 ppb 2 NTU 3 sigma 2 NTU 4 AA alkaline 2 months Graphical LCD 192x128 pixels visible under direct sunlight L 265mm W 88mm H 62mm 600 g without batteries to 140 F 18 to 60 40 to 120 F 4 to 49 C 85 at 106 F 41 C IP67 dustproof and waterproof Note 1 Specifications are subject to change without notice with Pyxis continuous development 1 1 Pyxis Major Features The Pyxis SP 900 analyzer shown in Figure 1 is a combination of photometer and fluorometer It provides colorimetric measurements at 6 LED wavelengths fluorometric measurement of fluorescent tracer PTSA and nephelometric turbidity measurement using
12. easure the PTSA concentration in the sample 4 Pyxis SP 900 will display the PTSA concentration in ppb as PTSA A list of five product names as the alternative concentration form other than PTSA can be created After the setup a product name in a dropdown list can be selected The PTSA result is the displayed according to the selected product name After each PTSA measurement the default product will be at the top of the user defined product name list If no alternative product names are set up Pyxis SP 900 will display the PTSA result in ppb as PTSA PTSA PTSA Inhibitore Inhibitore Inhibitors Je d SDM Figure 5 PTSA Measurement During the fluorescence measurement to determine the PTSA concentration Pyxis SP 900 checks the sample turbidity If the sample turbidity value detected is greater than 40 NTU Pyxis SP 900 will display a warning For best results the sample should be filtered if turbidity exceeds 40 NTU Sample color causes a lower PTSA concentration to be measured Pyxis SP 900 automatically compensates for sample color If the sample color is too intense Pyxis SP 900 will display a warning For best results ensure that the sample vial is clean Wipe off water on the outside wall of the sample vial using a lint free tissue paper Fill the sample vial to the 10 ml mark If the sample contains air bubbles tap the sample vial gently to remove the bubbles before placing the sample vial to sample vial c
13. igure 16 Measuring Absorbance 20 Tables Table 1 Feature Groups on Main Menu 6 Table 2 List of colorimetric methods 11 Table 3 Wavelength of each channel 20 Table 4 Contact Information 22 Trademarks and Patents Hach is a registered trademark of the Hach Company Loveland CO USA Confidentiality The information contained in this manual may be confidential and proprietary and is the property of Pyxis Lab Information disclosed herein shall not be used to manufacture construct or otherwise reproduce the goods disclosed herein The information disclosed herein shall not be disclosed to others or made public in any manner without the express written consent of Pyxis Lab Standard Limited Warranty Pyxis Lab warrants its products for defects in materials and workmanship Pyxis Lab will at its option repair or replace instrument components that prove to be defective with new or remanufactured components i e equivalent to new The warranty set forth is exclusive and no other warranty whether written or oral is expressed or implied Warranty Term The Pyxis warranty term is thirteen 13 months ex works In no event shall the standard limited warranty coverage extend beyond thirteen 13 months from original shipment date Warranty Service Damaged or dysfunctional instruments may be returned to Pyxis f
14. is performance Pyxis SP 900 should be stored in the temperature range of 0 to 140 F 18 to 60 C and relative humidity less than 85 at 106 F 41 C Do not leave the Pyxis SP 900 in a parked vehicle The temperature inside a parked vehicle can reach above 150 F in summer and 20 F in winter Exposing the Pyxis SP 900 to extreme temperature or humidity will cause a gradual decay in performance of fluorescence measurements and require more frequent calibrations During storage and transportation do not leave a sample vial in the sample vial compartment Close the lid of the sample vial compartment during storage and transportation Replace batteries when the Pyxis SP 900 displays a warning message indicating LOW BATTERY voltage Remove batteries from Pyxis SP 900 battery compartment if Pyxis SP 900 is going to be placed in storage for a long period time When the Pyxis SP 900 is shipped a desiccant pack is included in the desiccant compartment underneath the cover of the battery compartment It is recommended that a new desiccant pack is replaced each time the batteries are replaced 21 PPS 8 Troubleshooting The Pyxis SP 900 will prompt a warning message if it detects an abnormal condition or operation On screen prompts direct the user to take appropriate corrective actions in most cases If an unspecific error occurs or Pyxis SP 900 cannot be turned on reboot the instrument by taking a battery out of the battery h
15. le three minute timing step Figure 9 shows the main page of a method with a single timing step T Chlor ine ZERO ppm C12 Figure 9 Single Timer Method 4 4 Single Vial Procedure 1 Place the sample vial filled with the water sample in the Pyxis SP 900 sample vial compartment and press the ZERO button Pyxis SP 900 will display the page shown in Figure 9 Take the sample vial out and add the reagent to the sample vial Place sample vial back into the sample vial compartment and press the timer button TMR1 Pyxis SP 900 will start to monitor the reaction between the reagent and the species you want to measure in the water sample The concentration is shown in the chart as a function of time Figure 10 When the timer reaches the preset time and the reaction is complete the value of concentration will be shown on the top right corner of the page The rate of the reaction is often faster than the standard pre set time which will become apparent from the concentration time plot You can press the STOP button to stop the timer and terminate the timing step The last read concentration value will be displayed on the top right corner of the page after you terminate the timing step 13 1 03 pom Pod Figure 10 Concentration as a Function of Time 4 5 Two Vial Methods Some colorimetric methods require using two vials The water sample is added to two identical vials One vial is being used to zero the colorime
16. lowing a setup procedure to update the calibration parameters 1 2 Unpackaging the Instrument Remove the instrument and accessories from the shipping container and inspect each item for any damage that may have occurred during shipping Verify that all items listed on the packing slip are included If any items are missing or damaged please contact Pyxis Customer Service at service pyxis lab com PYKIS 1 3 Standard Accessories e Sample Vials two 10 ml round 0 78 inch 20 mm pathlength glass vials which can be used for all measurements including turbidity and fluorescence measurements e alkaline batteries e Instrument Manual also available from www pyxis lab com 1 4 Optional Accessories e Silica desiccant gel pack e 100 ppb PTSA standard in a 500 ml brown plastic bottle 1 5 Sample Vial Compartment The sample vial compartment is shown in Figure 1 along with a 10 ml sample vial When the sample vial is inserted into the sample vial compartment the triangular mark on the sample vial should be aligned approximately with the 6 o clock position of the sample vial compartment or any position consistently The sample vial compartment should be kept clean A small amount foreign material could significantly affect turbidity and fluorescence measurement results Use a soft cloth or lint free paper tissue to clean sample vial compartment periodically Remove debris scale and deposit promptly 1 6 Light Shield C
17. n Method for Aluminum PRMP 1 F Floride SPADNS 2 Method for Fluoride PRMP 27 Porphyrin Method for Copper PRMP 22 Zn Zinc Zincon Method for Zinc PRMP 97 S2 Sulfide Methylene Blue Method for Sulfide PRMP 93 CN Cyanide Pyridine Pyrazalone Method for Cyanide PRMP 23 N2H2 H2H2 P Dimethylaminobenzaldehyde Method for Hydrazine PRMP 31 CI2H CI2High High Range DPD Chlorine No sample change needed Hach is a registered trademark of the Hach Company Loveland CO USA 24
18. ntaminated e light shield cover is not in the closing position e The sample vial compartment is blocked with debris water or other materials The 100 ppb standard solution shall be stored in a brown or black opaque bottle Exposing the PTSA standard to light will cause the standard losing the PTSA concentration Many substances such as quaternary amine cause a negative interference Many other substances such laundry detergents that contain optical brightener will cause a significant positive interference 10 4 Colorimetric Measurement 4 1 Supported Methods A wide range of colorimetric methods is supported by the Pyxis SP 900 analyzer and the number of them keeps increasing with continuous development of Pyxis See corresponding Hach methods in Appendix A Table 2 List of Supported Colorimetric Methods Abbreviated Method Name Method Name CL F CL T CuBi DEHA CaMg FePh FeZi FeTp MoHR MoLR NO2H NO2L PMoV OPO4 OrgP PAmi F Chlorine T Chlorine Cu_Bicinch DEHA CaMg Fe_phenanth FeZine FeTptz Mo_HighRange Mo_LowRange NO2H NO2L OPO4 MoV OPO4 Phosphonate OPO4 Amino Description Free chlorine DPD method Total chlorine DPD method Bicinchoninate EPA approved for reporting wastewater analysis Method for N N diethylhydroxylamine and other oxygen scavengers Calmagite method for calcium and magnesium Total iron using 1 10 phenanthroline USEPA approve
19. ntration unit among the list of ppb ppm mg L and ug L Fihure 13 16 4 8 2 OPO4 UNIT Defit 1 1 EXIT SipCal Figure 12 Method Form Selection 0P04 FORM UNIT Defitl BlkCall EXIT SloCal Figure 13 Method Unit Selection Slope Calibration If the method has been calibrated prior to shipping there is no need to calibrate unless a calibration check indicates that the method needs a calibration The following steps are used to calibration a method 1 Use a calibration standard of known concentration Follow the steps required by the method and note the value reported by SP 900 If the measured value differs from the known standard value Press the CONFG button to launch the method configuration page Press the slope calibration button SlpCal A numeric keyboard will be displayed Enter the concentration value and press the OK key on the enter key in the numeric keyboard to return to the configuration page Press the EXIT button Press the OK key to accept the calibration or other key to cancel the calibration 17 PIKIS 4 8 3 4 8 4 0P04 F gpM Enter conc in Cunir 007 Pos Coen Mai BH lt Backspace BlkCal EB El EXIT HET lt Enter 5 LpCal 1 2 lt Entered concentration Figure 14 Slope Calibration For best results the concentration of the standard solution should be less than the maximum
20. older and reinstall the battery If the Pyxis SP 900 has been idle for more than two months and cannot be turned on replace all four batteries with four new AA alkaline batteries A diagnostics page can be launched by press the Diag icon in the main page The software version and its associated hash code can be found in the diagnosis page Contact Pyxis professionals at service pyxis lab com and provide with following information to ensure high quality technical support Items Contact Name Phone Email Customer Name Product Number P N Serial Number S N Firmware version Problem Description Table 4 Contact Information Note Can be found on the product label on back of product Can be found on the product label on back of product Can be found in diagnosis page Capture warning message if applicable 22 PYKIS Appendix A Pyxis Method and Hach Method Number PRMP Cross Reference Abbreviated Method Name Corresponding Hach method Method Name CL F F Chlorine Chlorine Free DPD PRMP 9 CL T T Chlorine Chlorine Totoal DPD PRMP 9 CuBi Cu_Bicinch Copper Bicinchoninate PRMP 20 DEHA DEHA DEHA Iron Reduction Method for Oxygen Scavengers PRMP 25 CaMg CaMg Calcium and Magnesium Calmagite Colorimetric Method PRMP 30 FePh Fe_phenanth Iron 1 10 phenanthroline PRMP 33 FeZi FeZine Iron FerroZine PRMP 3
21. ompartment 3 2 PTSA Product Setup PYKIS The PTSA product setup page Figure 6 is displayed when the SETUP button in the PTSA result page is pressed In this page five product names and the corresponding conversion factors can be input The conversion factor is determined according to the PTSA concentration in the products For example if the product contains 0 1 PTSA and you want to display the product concentration in ppm or mg L the conversion factor is 1000 If the product contains 0 05 PTSA the conversion factor is 500 When the product setup page is launched a cursor bar is at the first location of the product name input field Pressing the OK key moves the cursor to the keyboard A number or a letter can be highlighted using the navigational keys Press the highlighted letter or number to select and place it in the input field Figure 6 If the uppercase key is highlighted the letter selected will be shown as uppercase in the input field as shown in Figure 6 In the uppercase mode selecting the decimal place key the dot will place a space in the product name field PRODUCT SETUP 4 5 Product Name gt Ju L Conversion Factor pUe HEI Hess EMERITU OJP RIBRESIHES lt Enter Uppercase gt MEM MIME Backspace sod CANCEL NEXT lt lt Decimal Place or Space Figure 6 Product Setup A total of 10 charac
22. on to read absorbance The absorbance values of first 6 wavelengths table 3 will be shown Press the READ button again to show the absorbance values of the last three wavelengths Absorbance ZERO 1 0 310 9744 2 0 280 29574 READ 3 0 321 24059 TIMR 4 0 000 3 3 0 dos Sifb b 0 297 29 727 Figure 16 Absorbance Measurement Press EXIT to return to the main page Timing function for absorbance measurement may not be available for some models Table 3 Wavelength of each channel Channel uy Wavelength nm 560 570 630 high gain 525 high gain 455 525 365 630 420 Note that the absorbance values measured with Pyxis SP 900 is generally smaller than those measured with a spectrophotometer equipped with a monochromatic light source or detector The Pyxis SP 900 absorbance values should however linearly correlate with the absorbance values measured with the spectrophotometer Thus for any colorimetric system Pyxis SP 900 absorbance follows Lambert Beer law 20 PYKIS 7 Maintenance Use a soft cloth or lint free paper tissue to clean the sample vial compartment periodically Remove debris scale and deposit promptly Although Pyxis SP 900 is protected from water damage it is a good practice to avoid water entering the sample vial compartment and becoming trapping underneath the navigational control pad Deposits left behind when the water is evaporated could affect Pyx
23. or repair or replacement In some instances replacement instruments may be available for short duration loan or lease Pyxis warrants that any labor services provided shall conform to the reasonable standards of technical competency and performance effective at the time of delivery All service interventions are to be reviewed and authorized as correct and complete at the completion of the service by a customer representative or designate Pyxis warrants these services for 30 days after the authorization and will correct any qualifying deficiency in labor provided that the labor service deficiency is exactly related to the originating event No other remedy other than the provision of labor services may be applicable Repair components parts and materials but not consumables provided in the course of a repair or purchased individually are warranted for 90 days ex works for materials and workmanship In no event will the incorporation of a warranted repair component into an instrument extend the whole instrument s warranty beyond its original term Shipping A Repair Authorization Number RA must be obtained from the Technical Support service pyxis lab com before any product can be returned to the factory Pyxis will pay freight charges to ship replacement or repaired products to the customer The customer shall pay freight charges for returning products to Pyxis Any product returned to the factory without an RA number will be returne
24. over The light shield cover is shown in Figure 2 The light shield cover can be conveniently slid between the open and closed positions The light shield cover is held firmly at the rest positions by permanent magnets The light shield cover should be in the closed position during storage transportation and measurements especially during the turbidity and fluorescence measurements When turned on Pyxis SP 900 carries out self diagnosis including checking the performance of a variety of optical devices The light shield door shall be at the closed position to shield interference from ambient light during self diagnosis Care should be taken to avoid water or debris being trapped in the track of the light shield door N 2 K fg x ed 5 A gt _ Ji 4 E Lx Cc s S 4 j m s 7 j His ry Ss y Ll x _ j LI Ren f LY n i 1 Y Figure 2 Open and Close the Light Shield Cover Warning Magnetic sensitive devices including but not limited to credit cards watched hard disks should be keep at a distance of at least 2 inches from the Light Shield Door to avoid possible damage and or loss of information recorded 2 Start Pyxis SP 900 2 1 Battery Installation Pyxis SP 900 is powered by four AA size alkaline batteries Do not use rechargeable nickel cadmium NiCad batteries or any AA size lithium batteries A set of batteries typically la
25. played 4 6 Multiple Timing Steps Some colorimetric methods have two or three timing steps Pyxis SP 900 shows a count down timer for the timing steps before the last timing step Figure 11 During these timing steps one or more reagents are added to the sample or operations such as swirling the vial to mix the reagent and the sample are being performed These 14 PYKIS methods usually use one vial for the prepared blank and the other for the prepared sample TMR1 2315 Figure 11 Multiple Timer Method In order to show the concentration time curve as shown in Figure 10 during the last timing step Pyxis SP 900 must be zeroed using the prepared blank before the last timing step Thus the last timer button will not be selectable until Pyxis SP 900 has been zeroed using the prepared blank Multi timing step Hach methods require zeroing the colorimeter using the prepared blank after the last timing step is completed Pyxis SP 900 can optionally be re zeroed using the prepared blank after the last timing step The blank value measured will be subtracted from the concentration value measured at the end of the last timing step Optionally the READ button could be pressed to read the prepare sample again The following procedure is typical for methods having two timing steps Ts Press the TMR1 button to start the first timer Complete the necessary operations to prepare the blank and the sample Place
26. sts for two months When the batteries capacity is low Pyxis SP 900 will prompt a LOW BATTERY warning Replace all four batteries to resume operation of Pyxis SP 900 after the battery warning The Pyxis SP 900 battery compartment shown in Figure 3 is on the back side of the instrument Insert a small pad underneath the screen area to make the back surface level when the instrument is turned upside down Install batteries as followings 1 Remove the battery compartment cover by loosening four screws 2 Insert four batteries into the battery holder as shown in Figure Make sure the positive battery polarity marker is aligned with the positive marker on the battery holder 3 Replace the battery compartment cover making sure that the sealing O ring is lying flat on the battery holder and tighten the four screws e c Figure 3 Replace Batteries 2 2 Description of the Navigational Control Pad The Pyxis SP 900 navigational control pad consists of five keys as shown in Figure 1 The left right up and down keys are navigational keys that are used to select an icon a button or other items in various pages The center key is the OK key Press the OK key on a selected item to launch the action associated with the selected item The OK PIKIS key is also used to accept the current selection like the return key in a computer keyboard 2 3 Turning On Pyxis SP 900 To turn on SP 900 press and hold on the OK key
27. ter referred as to the prepared blank A reagent is added to the other vial referred as to the prepared sample The absorbance value is determined from the prepared sample If the method requires two or more reagents the prepared blank could be the resulting solution after one or more reagents have been added to the sample The following procedure is typical for two vial methods 1 Place the prepared blank into the Pyxis SP 900 sample vial compartment and press the ZERO button to zero the instrument 2 Place the prepared sample into the Pyxis SP 900 sample vial compartment and press the TMR1 button to start the method timer 3 When the timing step is completed the measured concentration will be displayed on the top of the page The timing step could be terminated earlier by pressing STOP button 4 Optionally Pyxis SP 900 can be re zeroed using the prepared blank after the timing step is completed or terminated The blank reading will be subtracted from the measured concentration value and the displayed concentration value on the top right corner will be updated This step is optional It is only necessary if the prepared blank changes its color during the timing period 5 Optionally the prepared sample vial can be put back and read again by pressing the READ button if the blank is re zeroed after the timing step is completed or terminated A new concentration value based on the last absorbance value measured will be calculated and dis
28. ters 18 5 Turbidity Measurement 5 1 Operation Follow the following steps to measure turbidity 1 Fill the 10 ml sample vial to above the 10 ml mark 2 Insert the sample vial to the sample vial compartment 3 Slide the light shield cover to the closed position 4 Press the Turb Icon in the main page to launch the turbidity measurement 5 2 Turbidity Calibration Fill the 10 ml sample vial to above 10 ml mark with the deionized water Insert the sample vial to the sample vial compartment Slide the light shield cover to the closed position Press the TCal button on the turbidity result page to launch the calibration Figure 15 Press the OK key to measure the deionized water 5 Fill the 10 ml sample vial to above 10 ml mark with the 100 NTU formazin standard Insert the sample vial to the sample vial compartment 6 Press the OK key to measure the 100 NTU standard 7 Press the OK key to return to the main page Bom Turbiditu Calibration Insert 0 0 NTU standarc 1030 Insert 100 NTU standarc Figure 15 Turbidity Calibration 19 PPS 6 Absorbance Measurement The following steps are used to measure the absorbance values of a sample 1 Press the Absb icon to launch the absorbance measurement page 2 Place a vial filled with the blank sample in the sample vial compartment Press the ZERO button to zero the method 3 Place a vial filled with the sample in the sample vial compartment Press the READ butt
29. ters can be input to the product name input field When a product name input is completed press the enter key in the keyboard first and then RIGHT navigational key to move the cursor to the first location of the conversion factor input field on the right Press the OK key and the cursor will be moved to the keyboard Use the navigational keys to select a number When finishing inputting the conversion factor press the OK key The cursor will be then moved to the buttons shown in the bottom of the page A letter or a number in the input fields can be deleted using the BACKSPACE key Press the NEXT button to launch a new product name input page SP 900 will store up to 5 user defined product names 3 3 calibration Deionized water 01 as the blank calibration solution and the 100 ppb PTSA calibration standard solution are needed 1 Press the FCal icon to launch the calibration page PIKIS 2 Follow the message prompts insert the DI blank into the sample vial compartment and press the OK key 3 Follow the message prompts and insert the 100 ppb standard into the sample vial compartment and press the OK key 4 Press the OK key to return to the main page PTSA Calibration Insert O O0ppb standard 12304 635 6945 9377 Insert 100pph standarc Figure 7 PTSA Calibration If calibration fails the followings should be checked e The DI blank is being contaminated e The 100 ppb PTSA standard solution is decayed or being co
30. ursor is moved to an input field the on screen keyboard will be automatically displayed The on screen keyboard allows numeric number or text input The number can be an integer or a decimal number The text can consist of alphabetic letters spaces and numbers The keyboard has a backspace key that can be used to delete characters in the input field After typing in all characters press the return key to release the cursor allowing the cursor to be moved to other items in the page using the navigation keys 2 6 Pyxis SP 900 Auto Power Off Pyxis SP 900 automatically turns itself off after 2 minutes with no key activity except for during a measurement Pressing and holding the OK key for 3 seconds will wake up the instrument and return to the original page if it has any measurement data 2 7 Auto LCD Power Saving During a colorimetric method measurement Pyxis SP 900 automatically turns LCD backlight off after 30 seconds with no key activity Pressing any key will turn on the LCD backlight Under normal ambient lighting condition icons and other contents shown on Pyxis SP 900 LCD are readable without backlight being on PIKIS 3 PTSA Measurement 3 1 PTSA Measurement 1 Fill the 10 ml sample vial with the test solution and tightly cap the sample vial 2 Place the sample vial into the sample vial compartment and slide the light shield cover to the closed position 3 Press the PTSA on the main page Pyxis SP 900 will start to m
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