Pyxis UC-50 Display/Data Logger User Manual
UC-50 Overview
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, 4-20mA or BlueTooth 5.0 connectivity. This microprocessor-based display requires no configuration when connected to Pyxis inline sensors. When Pyxis sensors are landed via RS-485 modbus, the UC-50 immediately recognizes the sensor for live sensor value, color trend charts as well as sensor diagnostics and calibration interface while logging data for USB download. The UC-50 provides RS-485 and 1x 4-20 mA outputs as well as one Relay output for connection to additional controllers, PLC or DCS systems.
NOTE: This manual uses the Pyxis ST-774 ultra-low dissolved oxygen as an example to describe the UC-50 functions and features.
Specifications
| Item | UC-50 |
| P/N | 43007 |
| Power | 110/220VAC 50/60 Hz, 0.6A |
| Display | 2.8” Color 320 x 240 Resolution |
| Output | 1 x 4-20 mA / RS-485 Modbus-RTU |
| Input | 1 x 4-20 mA / RS-485 Modbus-RTU |
| Relay Output | One channel relay output – 5Watt Maximum |
| Data Storage | 32 M Flash |
| USB | 1 x USB host for data downloading |
| Dimension | 6.3 inch L x 3.9 inch W x 2.6 inch D |
| Weight | 4.6 lbs / 2.1 kg |
| Operation Temperature | 32 – 122 oF (-0 – 50 oC) |
| Storage Temperature | -4 – 158 oF (-20 – 70 oC) |
| Humidity | 5 – 95% No Condensation |
| Protection | IP-65 |
| BlueTooth | BlueTooth 5.0 – Capable of Reading Pyxis Bluetooth Sensors |
| Regulation | CE, RoHS |
As Pyxis technology is continuously updated, this technical parameter may change at any time without notice.
Pyxis Sensors Supported
The table below lists the currently supported Pyxis sensors for use with he UC-50 in RS-485 user guided interface. When a UC-50 is ordered, any Pyxis sensor can be specified in the order. If the sensor is not covered in the table below, the Pyxis service term will enable the sensor type requested in the order before shipping.
| Sensor Name | Unit(s) of Measure | Output Range(s) |
| ST-500 | PTSA (ppb) | 0 – 300 ppb |
| ST-588 | PTSA (ppb) / Tagged Polymer (ppm) | 0 – 300 ppb / 0 – 20 ppm |
| ST-600 | Chlorine in Bleach (%) | 0 – 16 % |
| ST-601 | ClO2 in Solution (%) | 0 – 0.35 % |
| ST-604 | Chlorine in Bleach (%) | 0 – 2.0 % |
| ST-710 | pH | 0 – 14 pH |
| ST-711 | ORP (mV) | +1,500 mV |
| ST-712 | pH + ORP (mV) | 0 – 14 pH / +1,500 mV |
| ST-720 | Temp + Conductivity | 1 – 100,000 µs/cm |
| ST-725 | Temp + Conductivity | 0.02 – 200 µs/cm |
| ST-726 | Temp + Conductivity | 10 – 300,000 µs/cm |
| ST-730 | Turbidity (NTU) | 0 – 100 NTU |
| ST-730B | Turbidity (NTU) | 0 – 1,000 NTU |
| ST-735 | Turbidity (NTU) | 0 – 10,000 NTU |
| LT-736 | Ultra-Low Turbidity – White Light | 0.001 – 1,000 NTU |
| LT-736B | Ultra-Low Turbidity – InfraRed | 0.001 – 1,000 NTU |
| LT-737 | Ultra-Low Turbidity – White Light | 0.001 – 5 NTU |
| LT-737B | Ultra-Low Turbidity – InfaRed | 0.001 – 5 NTU |
| LT-739 | Ultra-Low Turbidity – White Light | 0.001 – 40 NTU |
| LT-739B | Ultra-Low Turbidity – InfraRed | 0.001 – 40 NTU |
| ST-765 | Free Chlorine + pH | 0 – 10 ppm / 0 – 14 pH |
| ST-772 | Dissolved Oxygen (ppm) | 0.004 – 20 ppm |
| ST-774 | Ultra-Low Dissolved Oxygen (ppb) | 0.4 – 2,000 ppb |
| LS-200 | Ultra-sonic Level (distance/volume) | 0 – 106 inches |
| LSP-101 | Pressure Tranducer – Stainless | 0 – 10 meters H2O |
| LSP-201 | Pressure Tranducer – PVC | 0 – 10 meters H2O |
| LSP-301 | Pressure Tranducer – PVDF | 0 – 10 meters H2O |
| LSP-301P | Pressure Transducer – PVDF | 0 – 40 meters H2O |
As Pyxis technology is continuously updated, this technical parameter may change at any time without notice.
Unpackaging
The package includes the following item
- UC-50
- NEMA 5 power cord for North American customers
If the UC-50 is ordered with a Pyxis sensor, the short cable that can be connected to the sensor may have been installed to the UC-50 terminals.
Dimension and Mounting
Figure 1. Dimensions / Mounting Dimensions
AC Power to UC-50
Wire an AC power cord to the power terminals on the left (Figure 2) according to the terminal designations PE (Earth ground), N (Neutral), and L (Hot).
4-20mA Output Wiring
Wire the 4-20mA output according to the wiring information shown in Figure 2.
Figure 2. AC-Power Supply and 4-20mA Output Wiring
UC-50 Operation
Button Functions
The house button on the left is for returning to the main screen from any screens (Figure 3). The left arrow button (second from the left) is for returning to the previous screens. The up and down buttons are for selecting items on the screen by moving the selection focus up, down, left, or right. The up and down buttons are also used to enter a numerical input. Single click or hold on these two buttons will increase or decrease the numerical value in the selected input fields. The OK button is for the selection confirmation, like the enter key on a computer keyboard.
Main Screen
For representation purposes, this manual demonstrates interace with the Pyxis ST-774 dissolved oxygen sensor. The UC-50 is configured to read and display measurement data from the Pyxis ST-774 dissolved oxygen sensor and many other digital sensors (see table in Pyxis Sensors Supported Section 3.0).
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 normal communication between the UC-50 and the ST-774 probe. In the bottom of the screen, the analog input (AI) value, the analog output (AO) value, and the relay status (R1) are shown. The UC-50 contains only one contact relay output which may be assigned to upper and lower values of any sensor input as determined by the user. *NOTE* This display is a representative example of how other digital Pyxis sensors will appear in the UC-50 interface via RS-485 modbus communication.
Figure 3. Main Screen
Sensor Type Selection
Click the left arrow key to launch Settings screen from the main screen. Click Probe settings to launch Probe Settings screen (figure 5). Click Probe Type to show the probe dropdown selection list (Figure 5).
Figure 4. Probe Type Selection
Figure 5. Selecting a Pyxis Sensor Type from Drop-Down List
Use the Up and Down key to select a sensor type and Click OK to confirm the selection.
System Information
Click the left arrow button to launch the system settings screen. Use the down button to select System Information. The UC-50 serial number, the hardware version and software version are shown in the System Information screen. Use the down button to highlight the Time field. Reset date or time if necessary.
Figure 6. Settings
Figure 7. System Information
Calibration
Zero Calibration
Select Probe Calibration from the screen shown in Figure 6. Select Zero Cal. Establish the zero-calibration gas flow for 15 minutes or until the ppb reading is stabilized. *NOTE* in the case of other Pyxis sensors, please follow the UC-50 prompt messages or specific sensor operation manual for proper ZERO calibraition if required. Press OK button on the Zero Cal page to start the zero calibration. If the zero calibration is complete, a calibration succeed message will be prompted.
Figure 8. Zero Calibration
Figure 9. Zero Calibration Waiting
Slope Calibration
Select Probe Calibration from the screen shown in Figure 6. Select High Cal. Establish an oxygen containing calibration gas flow for 15 minutes or until the ppb reading has stabilized. Press OK on the High Cal to start the slope calibration. Use the up/down button and OK button to enter in the oxygen percentage value. Use the up and down button to change this value to the oxygen percentage concentration in the calibration gas being used. If the slope calibration is complete, a “calibration succeed” message will be prompted.
*NOTE* The value shown in Figure 10 is the oxygen percentage in the calibration gas, not the dissolved oxygen concentration in ppb or ppm. The ST-774 probe will automatically convert the oxygen percentage concentration along with the measured barometric pressure and temperature to the precise dissolved oxygen concentration in ppb or ppm during the calibration process.
Figure 2. High (slope) Calibration
Figure 3. Calibration Succeed
4-20 mA Output Setting
Select Probe Settings from the Settings screen. Change the 4-20 mA scale via interface shown in Figure 12. The unit for DO is ppb (µg/L)
Figure 4. Probe Setting
Figure 5. Setup 4-20 mA Output Scale
Historical Data and Historical Trend
Use the left arrow button to launch the Settings screen. Select Historical Data or Historical Trend to view screen shown in Figures 14 and 15. The historical data is recorded by the UC-50 internally every minute. The Trend chart is not in real-time. When the trend chart screen is launched, the recorded data is charted with a 6-minute delay. The historical data can be uploaded to a USB driver in CSV format.
Figure 6. Recorded Historical Data
Figure 7. Historical Trend Chart
The ppb range (scale) of the trend chart may be configured via interface shown in Figures 16 and 17.
Figure 8. Trend Chart Setup
Figure 9. Y-Axis Range Setup
USB Operation
Select USB Settings from the Settings screen. In the USB settings screen, historical data can be downloaded to a USB driver. The UC-50 firmware can be also updated via the USB settings screen.
Contact us
Contact us if you have questions about the use or maintenance of the UC-50.
Pyxis Lab, Inc.
1729 Majestic Dr. Suite 5
Lafayette, CO 80026 USA
1-866-203-8397
www.pyxis-lab.com
service@pyxis-lab.com
Documents / Resources
 | Pyxis UC-50 Display/Data Logger [pdf] User Manual UC-50, Display Data Logger, UC-50, Display Data Logger |
