Triazole (HST) in cooling tower water. The ST565T is the same device configured to measure Tolytriazole (TTA). The ST-565 & 565T probes excite the sample water with a deep UV light and measures a narrow band near UV fluorescent emission. It can be connected to any controller that accepts an isolated or non-isolated 4-20mA input.
Page 5
4. Installation The ST-565/ST565T probe is shipped in a PVC tee. The tee has two ¾ inch NPT ports (sample in and out) and can be fluidically connected to a sample panel. The orientation of the flow with respect to the gravity of earth is not critical.
4.1. Probe to Controller Installation Follow the wiring table below to connect the ST-565/ST-565T probe to a controller. Note that the 24V power ground and the negative 4-20 mA terminal in the ST-565/ST-565T probe are internally connected. If a separate DC power supplier other than that from the controller is used, make sure that the output from the power supplier is within 22 to 26 VDC.
Google Play 5.2. Connecting to uPyxis Mobile App Turn on Bluetooth on your mobile phone (Do not pair the phone Bluetooth to the ST-565). Open uPyxis Mobile App. uPxis App connects to the Probe and click on the ST-565 probe.
5.4. Calibration Screen and Reading When connected, Mobile App will default to the Calibration screen. From the Calibration screen you can perform calibrations by pressing on Zero Calibration, Slope Calibration, 4-20 mA Span. Follow the screen instructions for each calibration step.
6.3. Installing uPyxis Desktop App Once the uPyxis Desktop App has been extracted. Find the extracted uPyxis Setup file and left click, click on Run, and then click Install. After install has been clicked the Setup Progress will continue. Follow the step during installation process.
6.4. Connecting to uPyxis Desktop App Open uPyxis Desktop App on your desktop. When the desktop app opens, to find your device, click on Device, then Connect via WiFi.
6.5. Connecting to Device When connected via WiFi, in the Discovered Devices box there will be the device product name (If no device product name in the Discovered Devices box, click Refresh). If device product name shows in the box, then click on Connect to Device.
6.6. Diagnosis Screen After the device has been calibrated and installation has been completed. To check diagnosis, click on Diagnosis. When in the Diagnosis screen you can view the Diagnosis Condition of the device.
6.7. Calibrating Device To calibrate the device, click on Calibration. On the Calibration screen there are three calibration tabs, Zero Calibration, Slope Calibration, and 4-20 mA Span. The screen does also display the reading of the device. The reading refreshed rate is every 4 seconds. 6.8.
6.9. Slope Calibration To perform Slope Calibration, click on Slope Calibration. Then follow the instruction on how to calibrate, then click Slope Calibration. 6.10. 4-20 mA Span To perform 4-20 mA Span, click on 4-20 mA Span. Then follow the instruction on how to calibrate, then click 4-20 mA Span.
7. Communicating using Modbus RTU The ST-565 / ST-565T probe is a Modbus slave device. In addition to the ppm TTA/HST value, a range of operational parameters including warning and error message are available via Modbus RTU connection. Contact Pyxis Lab Customer Service (service@pyxis-lab.com) for more information.
Need help?
Do you have a question about the ST-565 and is the answer not in the manual?
Questions and answers