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Summary of Contents for Pyxis ST-750
- Page 1 Color - 30 Degrees APHA/ Hazen Standa1d (Platinum/ Colbalt) Pyxis Lab® Inc. V1.2 1729 Majestic Dr (Suite 5) Lafayette, CO 80026 © 2022 Pyxis Lab, Inc.
- Page 2 Device Warranty Term The Pyxis warranty term for the ST-750 probe is thirteen (13) months from original shipment from Pyxis. In no event shall the standard limited warranty coverage extend beyond thirteen (13) months from original shipment date.
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Page 3: Table Of Contents
Table of Contents Introduction ..........................4 Features of the Pyxis ST-750 ......................4 Specifications ..........................5 Un-packing Instrument ......................... 5 Standard Accessories ........................6 Optional Accessories ........................7 Installation ..........................8 Quick 4-20mA Start ........................9 Calibration and Diagnosis......................10 Calibration and Diagnosis with uPyxis Desktop App ..............10 4.1.1... -
Page 4: Introduction
1 Introduction Product Description The Pyxis ST-750 inline APHA (Hazen) color sensor is uniquely designed to measure the real-time color in water for use in municipal, industrial and environmental applications. The sensor uses the APHA-Hazen platinum-cobalt (also referred to as Chromaticity) method to measure the color in the sample water and is ideally suitable for clean water and lightly polluted water with a slight to pale yellow tint. -
Page 5: Features Of The Pyxis St-750
Calibration Two-point calibration against DI water and known COLOR Standards Rating IP67 Regulation CE / RoHS Method Compliance ASTM-D1209 / ISO-6271 *NOTE* -With constant R&D at Pyxis Lab, specifications may be subject to change without notice. Pyxis ST-750 Operation Manual... -
Page 6: Un-Packing 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. 1.4 Standard Accessories •... -
Page 7: Optional Accessories
(Includes Sensor Cleaner 500mL + Accessories) MA-WB Bluetooth/USB Adapter MA-WB (Pyxis Bluetooth/USB Adapter for 7Pin Pyxis Sensors) PowerPACK-1 MA-BLE-1 (Single Chanel Auxiliary Power Supply w/Bluetooth For Pyxis Sensors) PowerPACK-4 MA-BLE-4 (Four Chanel Auxiliary Power Supply w/Bluetooth For Pyxis Sensors) MA-C10 50738 (10’... -
Page 8: Installation
2 Installation PRIMARY INSTALLATION FORMAT The recommended installation method for ST-750 should be a bypass flow arrangement in a vertical line to eliminate air bubble interference. This can be done with the standard ST-001 Inline Tee Assembly (3/4-inch FNPT) provided with each sensor. The sensor will function in stagnant water conditions and as high as 8-gpm maximum flow while installed in the ST-001 inline tee assembly. -
Page 9: Quick 4-20Ma Start
3 Quick 4-20mA Start Follow the wiring table below to connect the ST-750 probe to a receiving controller. *IMPORTANT NOTE* there are two wiring tables for sensors. The Green and White wires (4-20mA values) are different between each table. Listed above each table the specific serial # roll in representing when this change occurred. -
Page 10: Calibration And Diagnosis
4 Calibration and Diagnosis The ST-750 probe can be calibrated in a two-point (zero + slope) procedure using a deionized water sample and a standard solution containing a known COLOR standard solution. For ST-750, Pyxis recommends 30 deg COLOR calibration standard with Platinum/Cobalt formulation. Pyxis item COLOR-30 (P/N 58000). - Page 11 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 6. Connect to ST-750 via USB-Bluetooth option Pyxis ST-750 Operation Manual...
- Page 12 After the connection is established, the ST-750 probe series number and current COLOR reading are displayed on the left of the information page (Figure 7). In this page, a nickname can be assigned to the probe. The probe Modbus address can be changed in this page.
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Page 13: Calibration
Figure 9 - Zero Calibration Place the probe in a known COLOR calibration solution and click Slope Calibration to start the slope calibration. Enter the COLOR concentration in the dialog window as in Figure 10. Figure 10 - Slope Calibration Pyxis ST-750 Operation Manual... -
Page 14: 4-20Ma Span Settings
To help troubleshoot possible issues with the probe, please save an image of this page when the probe is placed in a clean water (tap water or deionized water), in a standard, and in the sample that the probe is intended. Figure 12 - Diagnosis Page Pyxis ST-750 Operation Manual... -
Page 15: Calibration Through The Controller
4-20mA calibration. With the default probe settings, the controller should be set up to convert 4 mA = 0.1 deg and 20 mA = 30.0 deg for ST-750. It is critical that the sensor optical channel be properly cleaned prior to sensor calibration. Please refer to Section 6.0 for proper cleaning procedures. -
Page 16: Probe Cleaning And Maintenance
Inline Sensor Cleaning Kit | Pyxis Lab® (pyxis-lab.com). Soak the lower half of the ST-750 probe in 100 mL probe cleaning solution for 10 minutes. Scrub the internal surfaces of the quartz optical channel aggressively with the pipe-cleaner brush and Q-tip provided with the kit. -
Page 17: Other Common Troubleshooting Issues
6.2 Other Common Troubleshooting Issues If the ST-750 probe output signal is not stable and fluctuates significantly, make an additional solution ground connection - connect the clear solution ground wire to a conductor that contacts the sample water electrically such as a brass pipe near the ST-750 probe.
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