Pyxis ST-565 Bedienungsanleitung
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ST-565 / ST-565T
Inline HST or TTA
Fluorometer Probe
Instruction Manual
Version 1.2 August 2018
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Table of Contents
1. Introduction 3
2. Un-packing the Instrument 3
2.1. Standard Accessories 3
2.2. Optional Accessories 4
3. Specification 4
4. Installation 4
4.1. Probe to Controller Installation 6
4.2. Connect via WiFi/Bluetooth 6
5. Probe Calibration with uPyxis Mobile App 7
5.1. Download uPyxis Mobile App 7
5.2. Connecting to uPyxis Mobile App 7
5.3. Diagnosis Screen 8
5.4. Calibration Screen 9
5.5. Device Info Screen 10
6. Probe Calibration with uPyxis Desktop App 11
6.1. Download uPyxis Desktop App 11
6.2. Unzip uPyxis Desktop App 12
6.3. Installing uPyxis Desktop App 13
6.4. Connecting to uPyxis Desktop App 14
6.5. Connecting to Device 15
6.6. Diagnosis Screen 16
6.7. Calibrating Device 17
6.8. Zero Calibration 17
6.9. Slope Calibration 18
6.10. 4-20 mA Span 18
7. Communicating Using Modbus RTU 19
8. Probe Cleaning and Maintenance 19
8.1. ST-565/T Inline Probe Cleaning Solution 19
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1. Introduction
The Pyxis ST-565 inline fluorometer probe measures the concentration of Halogen Stable
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. The ST-565 and ST-565T probes are smart devices.
In addition to measuring fluorescence, the ST-565 and ST-565T probes have extra photo-electric
components that monitor the color and turbidity of the sample water. This extra feature
allows automatic color and turbidity compensation to eliminate interferences common in real-world
samples.
Other features of the ST-565 and ST-565T probes include:
•Menu-driven calibration can be carried out by a computer, a smart phone, or other Pyxis
handheld devices via a USB or Wifi/Bluetooth connection.
•Diagnostic information (probe fouling, color or turbidity over range, failure modes) are
available during calibrations.
•The water sample does not need to be acidified. Sample pH between 6.4 to 10.0 and the
sample PTSA concentration (<300 ppb) do not affect the azole measurement.
2. 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
2.1. Standard Accessories
•Bulkhead Extension Cable
•Instrument Manual, also available from www.pyxis-lab.com.
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2.2. Optional Accessories
•USB-RS485 Adapter (Item Number: MA-485)
•Wifi/Bluetooth Adapter (Item Number: MA-WB)
•2 ppm TTA Calibration Standard Solution (Item Number: TTA-02)
•2ppm HST Calibration Standard Solution (Item Number: HST-02)
3. Specification
Items
Specification
ST-565 (HST Only)
0-7.5 ppm, ±0.2 ppm precision
ST-565T (TTA Only)
0-10ppm, ±0.2 ppm precision
Power Supply
24 VDC, ~1W
Output
4~20 mA isolated, RS-485 isolated
Connector
IP67 water proof connector/cable 1.5 m (4.5 ft)
Operation Pressure
Up to 1.0 MPa (100 PSI) at 45°C (113 °F)
Installation
¾-inch NPT
Storage Temperature
-20 °C ~ 60 °C (-4~140 °F)
Operational Temperature
0° C ~ 40 °C (32~104 °F)
Sample Water Flow
0 to 8 GPM
Typical Service Life
2 years
Housing Material
CPVC
Dimension
Shown in figure 1 in mm
Weight
0.5 lb
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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. The tee can be vertically or horizontally installed in the sample
pipe system.
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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.
Wire Color Designation
Red 24 V
Black Power ground
White 4-20 mA +
Green 4-20 mA - Internally connected to the power ground
Blue RS-485 A
Yellow RS-485 B
Clear Shield, solution ground
4.2. Connect via WiFi/Bluetooth
Connection between a computer and the ST-565/ST-565T probe via WiFi/Bluetooth adapter (P/N:
MA-WB). A smart phone app is provided to connect the ST-565/ST-565T probe to your smart phone
via Bluetooth interface.
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5. Probe Calibration with uPyxis Mobile App
5.1. Download uPyxis Mobile App
Download uPyxis Mobile App from Apple App Store or 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.
Note, procedures for ST-565T are identical to those for ST-565. The only difference between probes
is species measured and scale. (ie. ST-565 is for HST 0-7.5ppm / ST-565T is for TTA 0-10.0ppm)
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5.3. Diagnosis Screen
From the Diagnosis screen. You can check the diagnosis condition, Export & Upload, and
Upload Diagnosis Data.
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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,
and 4-20 mA Span. Follow the screen instructions for each calibration step.
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5.5. Device Info Screen
From the Device Info screen. You can name the Device or Product.
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