Pyxis LT-73 Series User Manual

Ultra-low turbidity sensors & accessories
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Summary of Contents for Pyxis LT-73 Series

  • Page 2: Table Of Contents

    7.3 Communication using Modbus RTU ......................30 8 Sensor Maintenance and Precaution ......................30 8.1 Methods to Cleaning the LT-73X Series Sensor .....................31 8.2 Storage .................................32 9 Troubleshooting ............................32 10 Contact Us ..............................32 LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 3 Pyxis Lab, Inc. 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).
  • Page 4: Introduction

    It is powered by a 24 VDC/1.5 W power supply and provides both 4–20 mA and RS-485 Modbus output signals. When clean, the unique Pyxis sensor design offers a stability of <0.02 NTU for up to one year without calibration. Additionally, this sensor can be wirelessly accessed via MA-CR Bluetooth adapter for Diagnostics, Cleaning, and Calibration when using the uPyxis®...
  • Page 5: Specifications

    FT-100 Inline Tee: 0–40 L/min (0–10.6 GPM) Enclosure Rating IP67 Regulation CE, RoHS, UKCA With Pyxis’s continuous improvement policy, these specifications are subject to change without notice. † Assuming sensor is clean LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 6 FT-100 Inline Tee: 0–40 L/min (0–10.6 GPM) Enclosure Rating IP67 Regulation CE, RoHS, UKCA With Pyxis’s continuous improvement policy, these specifications are subject to change without notice. † Assuming sensor is clean LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 7: Unpacking 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 accessory items are included. If any item is missing or damaged, please contact Pyxis Lab Customer Service at service@pyxis-lab.com. 3.1 Standard Accessories Included •...
  • Page 8: Installation

    For use in drinking water installations, the LT-73X Series ultra-low turbidity sensors should be installed using the Pyxis FR-100 Flow Reservoir Assembly. This uniquely designed reservoir operates in a by-pass format at a 200–1,800 mL/min flow rate and serves as a calming vessel. Specifically designed to reduce stray light...
  • Page 9 Figure 3. FR-100 Flow Reservoir Assembly Dimensions (mm) & Diagram Figure 4. Top view of FR-100. Diffusors (6 each) are provided and can be randomly installed in overflow weir to help minimize air bubbles. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 10 Figure 4A. FR-100 Sample Flow Path LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 11: Ft-100 Inline Tee Assembly Installation

    For use in alternative installations, the LT-73X Series ultra-low turbidity sensors may also be installed using the Pyxis FT-100 Inline Flow Tee Assembly. This uniquely designed in-line Tee operates at up to 40 Liters/Min (10.6 GPM) flow rate and operating pressures as high as 6.9 bar (100 psi). Constructed of Schedule 40-CPVC and designed with a unique 45°...
  • Page 12: Wiring

    White 4-20mA + Turbidity Pink No Connect Blue RS-485 A Yellow RS-485 B Earth Ground – LT-737 and LT739 Series Green (458C – LT-736/LT-736B Only) Internally connected to the power ground LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 13: Connecting Via Bluetooth

    4.4 Connecting via Bluetooth The Pyxis MA-CR Bluetooth/USB adapter (P/N: MA-CR) can be used to connect a LT-73X Series sensor to a smart phone with the uPyxis®2.0 Mobile App or a computer with the uPyxis® Desktop App. Figure 7. Bluetooth connection to LT-73X Series sensor with MA-CR and uPyxis Mobile App 5 Setup and Calibration with uPyxis®...
  • Page 14: Connecting To Upyxis® Mobile App

    Connect the LT-73X Series sensor to a mobile smart phone according to the following steps: 1. Open uPyxis®2.0 Mobile App. 2. On uPyxis®2.0 Mobile App, pull down to refresh the list of available Pyxis devices. 3. If the connection is successful, the LT-73X Series and its Serial Number (SN) will be displayed (Figure LT-73X Series sensor image.
  • Page 15: Calibration Screen And Reading

    Calibration of the LT-73X Series sensor should be conducted by using the L-CAL Portable Liquid Formazine Calibration Kit (P/N:53247). Please refer Section to 5.3.4 of this manual for details. Figure 10. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 16: Low Range Calibration

    9. Enter ”0.05” for the turbidity value of the DI water (Low Range Value). NOTE Because there is no global standard for zero turbidity in the industry, Pyxis recommends 0.05 NTU as a target low range calibration using bubble-free DI wa- ter.
  • Page 17: High Range Calibration

    5.3.4 L -CAL Portable Calibration Kit Overview & Procedure Images Pyxis Lab has developed a portable and reusable liquid-state turbidity calibration kit for rapid calibration of the Pyxis LT-73X Series inline ultra-low turbidity sensors. The LT-73X Series ultra-low turbidity sensors are factory calibrated using certified Formazine liquid standards.
  • Page 18 (ISO-7027 or EPA-180.1), it is likely that the values from different sensors can agree within 0.05 NTU. As such, the user should choose a calibration method and remain with the same calibration method for consistency. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 19: Diagnosis Screen

    5.4 Diagnosis Screen From the Diagnosis screen, you can check the diagnosis condition as well as Export & Upload. This feature may be used for technical support when communicating with service@pyxis-lab.com. Figure 12. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 20: Device Info Screen

    5.5 Device Info Screen From the Device Info screen. You can name the Device or Product. Figure 13. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 21: Setup And Calibration With Upyxis® Desktop App

    24VDC power terminal of a controller. If a controller is not available, please purchase a Pyxis PowerPACK Series auxiliary power supply with Bluetooth (see Section 3.2), or an alternative 24VDC power supply that can directly connect to the LT-73X Series sensor with proper cable connectors from Pyxis.
  • Page 22 NOTE After the sensor and Bluetooth are powered up, it may take up to 10 seconds for the adapter to establish the wireless signal for communication. Figure 16. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 23: Connecting To Upyxis® Desktop App Via Usb-C Cable

    LT-73X Series sensor to a laptop or a desktop computer with a USB-C cable and the uPyxis® Desktop App. 1) Download and install uPyxis Desktop APP from https://upyxis.pyxis-lab.com.cn/release/pc/uPyxis.Setup- latest.zip 2) Connect a USB Type-C cable to the port at the bottom of the MA-CR and to the USB port of the laptop or computer.
  • Page 24: Information Screen

    Comm port listed in the selection dropdown, you may try to select each one to see if a connection can be made. Alternatively, you may use the Windows Device Manager to identify the Comm Port that the Pyxis USB adapter is using. Figure 18. Connect to LT-73X Series via USB-RS485 Option After the connection is established, the LT-73X serial number and current turbidity reading are displayed on the left of the information page (Figure 19).
  • Page 25: Calibration Screen

    Calibration of the LT-73X Series sensor should be conducted by using the L-CAL Portable Liquid Formazine Calibration Kit (P/N:53247). Please refer to Section 6.5.4 of this manual for details. Figure 20. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 26: Low Range Calibration

    9. Enter ”0.05” for the turbidity value of the DI water (Low Range Value). NOTE Because there is no global standard for zero turbidity in the industry, Pyxis recommends 0.05 NTU as a target low range calibration using bubble-free DI wa- ter.
  • Page 27: High Range Calibration

    6.5.4 L -CAL Portable Calibration Kit Overview & Procedure Images Pyxis Lab has developed a portable and reusable liquid-state turbidity calibration kit for rapid calibration of the Pyxis LT-73X Series inline ultra-low turbidity sensors. The LT-73X Series ultra-low turbidity sensors are factory calibrated using certified Formazine liquid standards.
  • Page 28 (ISO-7027 or EPA-180.1), it is likely that the values from different sensors can agree within 0.05 NTU. As such, the user should choose a calibration method and remain with the same calibration method for consistency. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 29: Diagnosis Screen

    When in the Diagnosis screen you can view the Diagnosis Condition of the device. This feature may be used for technical support when communicating with service@pyxis-lab.com. To perform a Cleanliness Check, first select the Diagnosis Condition which defines the fluid type that the...
  • Page 30: Adjusting The 4-20Ma Span

    Calibration Screen, shown in Figure 24. *NOTE* the 20mA value may be adjusted only to an NTU value lower than the upper factory limit of the sensor. Figure 23. Figure 24. LT-73X Series User Manual service@pyxis-lab.com | +1 (866) 203-8397...
  • Page 31: Communication Using Modbus Rtu

    The LT-73X Series sensor is configured as a Modbus slave d evice. In addition to the turbidity NTU value, many operational parameters, including warning and error messages, are available via a Modbus RTU con- nection. Contact Pyxis Lab Customer Service (service@pyxis-lab.com) for more information. 8 Sensor Maintenance and Precaution The LT-73X Series sensor is designed to provide reliable and continuous turbidity readings even when in- stalled in moderately contaminated industrial cooling waters.
  • Page 32: Methods To Cleaning The Lt-73X Series Sensor

    A small, soft bristle brush, Q-Tips cotton swab, or soft cloth may be used to safely clean the sensor housing and the quartz optical sensor channel. These components and more come with a Pyxis Lab Inline Probe Cleaning Solution Kit (P/N: SER-01) which can be purchased at our online E-Store https://pyxis- lab.com/product/st-series-probe-cleaning-kit/...
  • Page 33: Storage

    — connect the black (shield) wire to a conductor that contacts the sample water electrically such as a metal pipe adjacent to the LT-73X Series tee. 10 Contact Us Pyxis Lab, Inc 21242 Spell Circle Tomball, TX 77375 USA www.pyxis-lab.com...

This manual is also suitable for:

Lt-736Lt-737Lt-739Lt-736bLt-737bLt-739b

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