Pyxis ST-565 Manuel utilisateur

ST-565 / ST-565T

Inline HST or TTA

Fluorometer Probe

Instruction Manual

Version 1.2 August 2018

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

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

item is missing or damaged, please contact Pyxis Lab Customer Service at [email protected].

2.1. Standard Accessories

•Bulkhead Extension Cable

•Instrument Manual, also available from www.pyxis-lab.com.

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

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.

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.

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)

5.3. Diagnosis Screen

From the Diagnosis screen. You can check the diagnosis condition, Export & Upload, and

Upload Diagnosis Data.

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.

5.5. Device Info Screen

From the Device Info screen. You can name the Device or Product.

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