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Summary of Contents for Pyxis SP-900
- Page 1 SP-900 Portable Water Analyzer Operation Manual Rev. A Firmware version 1.01 Pyxis Lab, Inc. 2013 All Rights Reserved...
- Page 2 Pyxis Lab, Inc. PO Box 802 Hopkinton, MA 01748 T 215 859 8201 www.pyxis-lab.com service@pyxis-lab.com...
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Page 3: Table Of Contents
Turning On Pyxis SP-900 ..............6 Main Page ..................6 Turning Off Pyxis SP-900 ..............7 On Screen Keyboard ................ 7 Pyxis SP-900 Auto Power Off ............7 Auto LCD Power Saving ..............7 PTSA Measurement ................8 PTSA Measurement ................. 8 PTSA Product Setup ................. - Page 4 Advanced Methods ................ 15 Method Setup and Calibration ............16 Turbidity Measurement ................ 19 Operation ..................19 Turbidity Calibration ..............19 Absorbance Measurement..............20 Maintenance ..................21 Troubleshooting ..................22 Appendix A. Pyxis Methods and Hach® Methods Cross Reference ..23...
- Page 5 Figures Figure 1 Insert the Sample Cup ............... 2 Figure 2 Open and Close the Light Shield Door ..........4 Figure 3 Replace Batteries ................5 Figure 4 Main Menu ..................6 Figure 5 PTSA Measurement ................8 Figure 6 Setup Product ................... 9 Figure 7 PTSA Calibration ................
- Page 6 Trademarks and Patents Pyxis* is trademarks of Pyxis Lab, Inc. and may be registered in one or more countries. 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.
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Page 7: General Description
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 with 365 nm excitation and 410 nm emission, and turbidimetric measurement using a white LED as the excitation source. -
Page 8: Unpackaging The Instrument
Pyxis 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. -
Page 9: Standard Accessories
The light shield door 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. -
Page 10: Figure 2 Open And Close The Light Shield Door
Figure 2 Open and Close the Light Shield Door 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. -
Page 11: Start Pyxis Sp-900
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. -
Page 12: Turning On Pyxis Sp-900
2.3 Turning On Pyxis SP-900 To turn on SP-900, press and hold on the OK key 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. -
Page 13: Turning Off Pyxis Sp-900
2.4 Turning Off Pyxis SP-900 Turn Pyxis SP-900 off by navigating to STBY icon and press OK key. 2.5 On Screen Keyboard Pyxis SP-900 provides an on-screen keyboard when user input is needed. If the cursor is moved to an input field, the on-screen keyboard will be automatically displayed. -
Page 14: Ptsa Measurement
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 measure the PTSA concentration in the sample. -
Page 15: Ptsa Calibration
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. -
Page 16: Figure 7 Ptsa Calibration
Deionized water (DI) 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. 2. Follow the message prompts, insert the DI blank into the sample vial compartment and press the OK key. -
Page 17: Colorimetric Measurement
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... -
Page 18: Select A Method
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. Table 1 in Appendix A provides a... -
Page 19: Single Timing Step Method
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 8. -
Page 20: Two-Vial Methods
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. -
Page 21: Advanced Methods
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. -
Page 22: Method Setup And Calibration
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 from other portable colorimeters having only light sources in the visible range. -
Page 23: Figure 12 Method Form Selection
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. 2. If the measured value differs from the known standard value, Press the CONFG button to launch the method configuration page. -
Page 24: Figure 14 Slope Calibration
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. -
Page 25: Turbidity Measurement
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. -
Page 26: Absorbance Measurement
630, high gain 525, high gain 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. -
Page 27: 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. -
Page 28: Troubleshooting
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. -
Page 29: Appendix A. Pyxis Methods And Hach® Methods Cross Reference
9 Appendix A. Pyxis Methods and Hach® Methods 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...
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