Pyxis Porta-Panel ST-774 User Manual

Ultra-low dissolved oxygen analyzer

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ST-774 Porta-Panel

Ultra-Low Dissolved Oxygen

Analyzer User Manual

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Summary of Contents for Pyxis Porta-Panel ST-774

Page 1 ST-774 Porta-Panel Ultra-Low Dissolved Oxygen Analyzer User Manual - 1 -...
Page 2 Table of contents Specifications............................. 3 1.1.ST-774 Porta-Panel Overview + Specification (P/N 42096) ..............3 2. Unpackaging ............................7 3. UC-50 TERMINAL BOARD WIRING DIAGRAM ..................8 3.1 UC-50 OUTPUT SIGNAL/RELAY WIRING DETAILS AND 4-20mA RANGES..........9 4. Sample and Calibration Gas Connection ....................10 4.1.
Page 3 1. Specifications Please reference the ST-774 operation manual for the full specifications on the ultra-low dissolved oxygen sensor. 1.1. ST-774 Porta-Panel Overview Product Description The ST-774 Porta-Panel (P/N-42096) is a prefabricated panel ideally suited for those desiring to use the ST-774 Ultra-Low DO sensor with local display and data acquisition in a portable fashion for oxygen measurement (ie.
Page 4 ST-774 Porta-Panel Diagram (mm) Figure 1 - ST-774 Porta-Panel (P/N-42096) - 4 -...
Page 5 ST-774 Description The Pyxis ST-774 is an ultra-low range dissolved oxygen (DO) sensor with a lower limit of detection 0.1 ppb (μg/L). It is design is based on the principle of fluorescence quenching to determine the partial pressure of the dissolved oxygen in water and incorporates Pyxis' advanced technology in the field of fluorescence detection.
Page 6 UC-50 Description The Pyxis UC-50 is a preconfigured push-button color micro- display and data logging terminal that can connect any Pyxis sensor via RS-485 or 4-20mA connectivity. This microprocessor- based display requires no configuration when connected to Pyxis inline sensors. When Pyxis sensors are landed via RS-485 modbus,...
Page 7 NOTE - PO# must be issued for ST-774 Service-Swap Program. Pyxis Ships New/Reconditioned ST-774 Sensor Only. Client Ships Their Sensor to Pyxis for Even Exchange. 30-days to Ship Old Sensor or Pyxis Bills for full value of New ST-774 2. Unpackaging The package includes the following items mounted on the panel •...
Page 8 3. UC-50 TERMINAL BOARD WIRING DIAGRAM Please refer to the wiring terminal diagram below for the UC-50 display/data logger. *NOTE* – the UC- 50 terminal board provides two prewired pigtail cables with adapters. The 7-Pin output pigtail offers a male adapter. This pigtail cable is designed to be connected to the loose flying lead cable with female adapte and open wires that is provided with the panel.
Page 9 4-20mA+ for Dissolved Oxygen White 4-20mA- The UC-50 4-20mA output is programmed for disolved oxygen as a default from the Pyxis factory and users can alter this output scaling, please refer to section 5.9. UC-50 4-20mA output scaling Unit of Measure...
Page 10 Ultrapure nitrogen gas (Pyxis DCC-3 P/N 42059) may be used for the zero calibration. The slope calibration requires 0.02% to 0.1% (or 200 to 1000 ppm) oxygen in nitrogen gas (Pyxis DCC-4 P/N 42060). Portable standard calibration gas cylinders can be purchased from Pyxis if desired in the United States only, or are commonly available on the open market.
Page 11 5. UC-50 Operation 5.1.Main Screen The UC-50 is configured to read and display measurement data from the Pyxis ST-774 dissolved oxygen probe. The system time, ST-774 DO ppb reading and the sample temperature measured by the ST-774 are displayed on the main screen. The green dot on the upper right of the screen indicates that the controller is operating normally.
Page 12 5.3 Real-Time Trend Chart From the main screen, press to enter the trend chart screen. Measured values will be displayed as a line graph to show the real-time trend. Press to return to the main screen. Figure 6. Trend Chart 5.4 Set Date &Time On UC-50 Dispaly Click the left arrow button to launch the system settings screen.
Page 13 5.5 TEMPERATURE UNIT of MEASURE SETUP PROCEDURE The display unit of temperature is Celsius by default. Users can switch the temperature unit as desired in Temp Units notification box. From the Probe setting menu, select Temp Units. Here you can change the temperature measurement unit to Fahrenheit.
Page 14 2. MANUAL RELAY MODE When setting [Manual] mode, you need to press to move the cursor to the button, then press OK to turn on the relay manually. You will note the “Turn OFF” button activated at bottom of page when in Manual Mode with a GREEN color-coded button to left indicating the relay is currently ON.
Page 15 4. ALARM (LL) or ALARM (HL) MODES The Turn ON and Turn OFF threshold values are constantly compared with the primary measurement of the sensor. In the case of ST-774-UC-50-Porta-Panel, the primary measurement is disolved oxygen(DO). Security time is used to set the activation time of the relay in a range of 0 ~ 99999 seconds. If user does not want to limit the activation time of the relay, the security time should be set to “...
Page 16 5.7. Calibration 5.7.1. Zero Calibration Using Sulfite ZERO Calibration Kit (P/N 16019) 1) Unscrew the lid from the 10mL vial containing catalyzed sodium sulfite powder (P/N - SO3 VIAL). 2) Fill the vial with DI water to the 10mL mark 3) Screw the lid on the vial and gently shake for 10 seconds.
Page 17 7) Place sensor in upright position with calibration cap at the bottom. 8) Select Probe Calibration from the Settings menu. Then select Zero cal as shown in Figure 14. Figure 14. Zero Calibration 9) Select button and press OK to start the zero calibration on the UC-50. Zero Cal *IMPORTANT NOTE* - Allow the sensor with calibration cap / sulfite solution stand for up to 12 hours for best results.
Page 18 Using the same techniques as outlined for zero gas Probe Calibration calibration, establish an oxygen containing calibration gas (Pyxis DCC4 = 99.9% Nitrogen / 0.1% Oxygen Gas Cylinder) flow for 15 minutes or until the ppb reading has stabilized. Select...
Page 19 The UC-50 controller supports displaying the diagnostic data of the ST-774 in use. This feature may be used for technical support when communicating with service@pyxis-lab.com. Selecting the Probe Diagnosis in the setting interface of UC-50 controller will display the internal original diagnosis data interface.
Page 20 # 220018 and after. For ST-774-UC-50-Porta-panel, this will be programmed for disolved oxygen as a default from the Pyxis factory and referred to the previous section this output is internally connected to the white wire of 7-pin output pigtail table.
Page 21 5.10. Historical Data and Historical Trend Select Historical Data on the setting interface of the UC-50 controller, shown in Figures 21. T he data types from left to right are dissolved oxygen (DO), no sense, temperature and 4-20mA input value. UC-50 controller stores measurement data of ST-774 every 60-seconds.
Page 22 5.11. USB Operation UC-50 has a built-in USB interface to support historical data export and firmware upgrade function. Before accessing USB functions, please make sure USB thumb drive is properly plugged into UC-50 USB interface. *NOTE* For data download and upload to the UC-50 a USB device should have no existing files on it and be FAT-32 formatted with a storage capacity between 8 and 64GB *Gigabytes.
Page 23 5.11.2. Upgrade UC-50 Firmware Copy the target UC-50 firmware file (.bin) to the root directory of USB thumb drive, plug the thumb drive to UC-50 USB interface, select in Settings page and select thhe USB Settings Program Upgrade function in USB Settings page. UC-50 will automatically start firmware upgrading procedure and reboot itself once the procedure completed.
Page 24 6. Modbus RTU The UC-50 controller is configured as Modbus slave device. Users can view the sensor measured values via a Modbus RTU connection. Refer to Section 3.1 for DCS connection. UC-50 Default Communication Parameters Device Address Baud Rate 9600 Word Length Parity None...
Page 25 7. Contact us Contact us if you have questions about the use or maintenance of the ST-774 Porta-Panel: Pyxis Lab, Inc 2124 Spell Circle Tomball,TX.77375 USA www.pyxis-lab.com Phone: +1 (866) 203-8397 Email: service@pyxis-lab.com - 18 -...

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