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Summary of Contents for Pyxis ST-601
- Page 2 ST-601 ClO2 Concentration Sensor User Manual April 28, 2021 Rev. 2.01 Pyxis Lab, Inc. 1729 Majestic Dr. Suite 5 Lafayette, CO 80026 USA www.pyxis-lab.com © 2017 Pyxis Lab, Inc. Pyxis Lab Proprietary and Confidential...
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Page 3: Table Of Contents
8.1 Methods to Cleaning the ST-601 ........ - Page 4 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).
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Page 5: Introduction
The ST-601 offers an expanded range and a RTD temperature output signal. This features allow the user to measure ClO2 as high as 0.35% (mass/mass) and obtain a temperature measurement, useful when required to consider the impact of atmospheric temperature conditions on variable ClO2 concentration readings. -
Page 6: Specifications
IP67 Regulation CE/RoHS With Pyxis’s continuous improvement policy, these specifications are subject to change without notice. 3 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. -
Page 7: Optional Accessories
3.2 Optional Accessories The following optional accessories can be ordered at order@pyxis-lab.com or the Pyxis E-Store at https://pyxis- lab.com/shop/ Figure 1. ST-601 User Manual service@pyxis-lab.com | +1 (866) 203-8397... -
Page 8: Installation
This method should ideally in a vertical line run to avoid chlorine gas bubble interfer- ence. Pyxis also offers 2” and 3” inline tee assemblies as an accessory option if required. To properly install the ST-601 sensor into the ST-001 Tee Assembly, follow the steps below: 1. -
Page 9: Teflon Tubing
Users can use conventional 1/4” OD compression fittings to connect desired inlet and outlet bleach line size to the ST-601. This method should ideally in a vertical line run to avoid chlorine gas bubble interference. -
Page 10: Connecting Via Bluetooth
4.4 Connecting via Bluetooth A Bluetooth adapter (P/N: MA-WB) can be used to connect a ST-601 sensor to a smart phone with the uPyxis® Mobile App or a computer with the uPyxis® Desktop App. Figure 4. Bluetooth connection to ST-601 sensor 4.5 Connecting via USB... -
Page 11: Setup And Calibration With Upyxis® Mobile App
5 Setup and Calibration with uPyxis® Mobile App 5.1 Download uPyxis® Mobile App Download uPyxis® Mobile App from Apple App Store Google Play. Figure 6. uPyxis® Mobile App installation ST-601 User Manual service@pyxis-lab.com | +1 (866) 203-8397... -
Page 12: Connecting To Upyxis® Mobile App
1. Open uPyxis® Mobile App. 2. On uPyxis® Mobile App, pull down to refresh the list of available Pyxis devices. 3. If the connection is successful, the ST-601 and its Serial Number (SN) will be displayed (Figure 7). 4. Press on the ST-601 sensor image. -
Page 13: Calibration Screen And Reading
When connected, the uPyxis® Mobile App will default to the Calibration screen. From the Calibration screen, you can perform calibrations by pressing on Zero Calibration, Slope Calibration, and 4–20mA Span. Follow the screen instructions for each calibration step. Figure 8. ST-601 User Manual service@pyxis-lab.com | +1 (866) 203-8397... -
Page 14: Diagnosis Screen
If the sensor is severely fouled, a Dirty message will be shown. In this case, follow the procedure in the Methods to Cleaning the ST-601 Sensor section of this manual. Figure 9. ST-601 User Manual service@pyxis-lab.com... -
Page 15: Device Info Screen
Desktop application. Double click the uPyxis.Setup.exe file to install. Figure 11. uPyxis® Desktop App installation Click Install to start the installation process. Follow the screen instructions to complete the USB driver and uPyxis® installation. ST-601 User Manual service@pyxis-lab.com | +1 (866) 203-8397... -
Page 16: Connecting To Upyxis® Desktop App
Connect via USB-RS485 (Fig- ure 12). 4. If the connection is successful, the ST-601 sensor and its Serial Number (SN) will be displayed in the left pane of the uPyxis® window. NOTE After the sensor and Bluetooth is powered up, it may take up to 10 seconds for the adapter to establish the wireless signal for communication. -
Page 17: Information Screen
To calibrate the device, click on Calibration. On the Calibration screen there are three calibration tabs, Zero Calibration, Slope Calibration, and 4-20mA Span. The screen also displays the reading of the device. The reading refresh rate is every 4 seconds. Figure 14. ST-601 User Manual service@pyxis-lab.com | +1 (866) 203-8397... -
Page 18: Diagnosis Screen
Check. If the sensor is clean, a green Clean message will be shown. If the sensor is severely fouled, a red Dirty message will be shown. In this case, follow the procedure in the Methods to Cleaning the ST-601 Sensor section of this manual. Figure 15. -
Page 19: Adjusting 4-20Ma Span
Figure 17. 7.3 Communication using Modbus RTU The ST-601 sensor is configured as a Modbus slave device. In addition to the ClO2 concentration % value, many operational parameters, including warning and error messages, are available via a Modbus RTU con- nection. -
Page 20: Sensor Maintenance And Precaution
ST-601 sensor is used as part of an automated control system. When used to control product dosing, it is suggested that the automation system be configured to provide backup to limit potential product overfeed, for example by limiting pump size or duration, or by alarming if the pumping rate exceeds a desired maximum limit. -
Page 21: Storage
To clean the ST-601 sensor, soak the lower half of the sensor in 100 mL inline sensor cleaning solution for 10 minutes. Rinse the ST-601 sensor with distilled water and then check for the flashing blue light inside the ST-601 sensor quartz tube. If the surface is not entirely clean, continue to soak the ST-601 sensor for an additional 10 minutes.
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