Pyxis ST-730 Series User manual

ST-730 Series Inline Turbidity Probes
User Manual
February 23, 2020
Rev. 1.31
© 2017 Pyxis Lab, Inc.
Pyxis Lab Proprietary and
Confidential

Table of Contents
1 Introducon 2
2 Specicaons 2
3 Unpacking Instrument 2
3.1 Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2 Oponal Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Installaon 4
4.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Connecng via Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.3 Connecng via USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Setup and Calibraon with uPyxis® Mobile App 6
5.1 Download uPyxis® Mobile App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.2 Connecng to uPyxis® Mobile App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.3 Calibraon Screen and Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.4 Diagnosis Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.5 Device Info Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Setup and Calibraon with uPyxis® Desktop App 9
6.1 Install uPyxis® Desktop App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2 Connecng to uPyxis® Desktop App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3 Informaon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.4 Calibraon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.5 Diagnosis Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Communicaon using Modbus RTU 12
8 Sensor Maintenance and Precauon 13
8.1 Methods to Cleaning ST-730 Series Probe . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9 Troubleshoong 14
10 Contact Us 14

Warranty Informaon
Condenality
The informaon contained in this manual may be condenal and proprietary and is the property of Pyxis
Lab, Inc. Informaon disclosed herein shall not be used to manufacture, construct, or otherwise reproduce
the goods described. Informaon disclosed herein shall not be disclosed to others or made public in any
manner without the express wrien consent of Pyxis Lab, Inc.
Standard Limited Warranty
Pyxis Lab warrants its products for defects in materials and workmanship. Pyxis Lab will, at its opon, repair
or replace instrument components that prove to be defecve with new or remanufactured components
(i.e., equivalent to new). The warranty set forth is exclusive and no other warranty, whether wrien or oral,
is expressed or implied.
Warranty Term
The Pyxis warranty term is thirteen (13) months ex-works. In no event shall the standard limited warranty
coverage extend beyond thirteen (13) months from original shipment date.
Warranty Service
Damaged or dysfunconal instruments may be returned to Pyxis for repair or r eplacement. In some in-
stances, replacement instruments may be available for short duraon loan or lease.
Pyxis warrants that any labor services provided shall conform to the reasonable standards of technical com-
petency and performance eecve at the me of delivery. All service intervenons are to be reviewed and
authorized as correct and complete at the compleon of the service by a customer representave, or des-
ignate. Pyxis warrants these services for 30 days aer the a uthorizaon and will correct any qualifying
deciency in labor provided that the labor service deciency is exactly related to the originang event. No
other remedy, other than the provision of labor services, may be applicable.
Repair components (parts and materials), but not consumables, provided during a repair, or purchased
individually, are warranted for 90 days ex-works for materials and workmanship. In no event will the in-
corporaon of a warranted repair component into an instrument extend the whole instrument’s warranty
beyond its original term.
Warranty Shipping
A Repair Authorizaon (RA) Number must be obtained from Pyxis Technical Support before any product can
be returned to the factory. Pyxis will pay freight charges to ship replacement or repaired products to the
customer. The customer shall pay freight charges for returning products to Pyxis. Any product returned to
the factory without an RA number will be returned to the customer.
Pyxis Technical Support
Contact Pyxis Technical Support at [email protected]
ST-730 Series User Manual 1

1 Introducon
The Pyxis ST-730 series is a variety of pre-scaled inline probes all measuring turbidity in water using a white
LED as the excitaon light source and by measuring the scaered light at a 90-degree angle with respect to
the excitaon beam. The uidic and opcal arrangement of the ST-730 series probe is designed to overcome
many shortcomings associated with other inline turbidimeters. It can be easily inserted into the custom-
made tee with a compression ng port designed to ensure correct vercal posioning of the ST-730 series
probe in the uid stream. The ST-730 series probe custom mounng tee has two ¾ inch female NPT ports
for plumbing into an exisng ¾ inch sample water line. The ST-730 series probe can be connected to any
device that accepts an isolated or non-isolated 4-20mA input or RS-485 Modbus input. The ST-730 series
probe has a short uidic channel that can be easily cleaned and calibrated using the MA-WB Bluetooth
adapter and uPyxis® Mobile or Desktop App.
2 Specicaons
Specicaons ST-730 ST-730B ST-730SS ST-731 ST-735
P/N 53201 53202 50626 53505 53204
Range (NTU) 0-100 0-1,000 0-100 0-10 0-10,000
Resoluon (NTU) 0.1 1 0.1 0.05 10
Accuracy ±2% of reading
Method Nephelometric, with white LED and IR LED (860 nm) light sources
Calibraon Two-point calibraon against standard soluon
Outputs 4-20mA Analog Output, RS-485 Digital Output with Modbus protocol
Installaon*Custom tee assembly (P/N: ST-001) with 3/4” female socket & NPT threaded ports
Cable Length 5 , with IP67 connectors. 30  and 60  extension cables available
Power Supply 22-26 VDC, 1 W
Dimension inch (mm) Length: 6.8 (172.7), Body Diameter: 1.44 (36.6)
Weight lbs(g) 0.37 (170) 0.37 (170) 2.5 (1130) 0.37 (170) 0.37 (170)
Material CPVC CPVC 304 Stainless Steel CPVC CPVC
Operaonal Tempera-
ture °F (°C) 40-120
(4-49)
40-120
(4-49)
32-104 (0-40) 40-120
(4-49)
40-120
(4-49)
Storage Temperature °F
(°C) 20-150 (-7-66)
Pressure psi (MPa) Up to 100
(0.7)
Up to 100
(0.7)
Up to 290 (2.0) at 149 °F
(65 °C)
Up to 100
(0.7)
Up to 100
(0.7)
Enclosure Rang IP66
Regulaon CE
*The ST-730SS probe does not come with the custom tee assembly (P/N: ST-001). It has 3/4” female NPT threaded ports on the probe
itself.
3 Unpacking 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 CHEMTROL Customer Service at s[email protected]
ST-730 Series User Manual 2

3.1 Standard Accessories
• Tee Assembly 3/4” NPT (1x Tee, O-ring, and Nut) P/N: ST-001
• 7-Pin Female Adapter/Flying Leads Cable (2 ) P/N: MA-1100
• User Manual available online at www.chemtrol.com.au/probes-selection/inline-turbidity-meter-series
3.2 Oponal Accessories
Figure 1.
ST-730 Series User Manual 3

4 Installaon
The provided ST-001 Tee Assembly can be connected to a pipe system through the 3/4” female ports, either
socket or NPT threaded. To properly install the ST-730 series probe into the ST-001 Tee Assembly, follow
the steps below:
1. Insert the provided O-ring into the O-ring groove on the tee.
2. Insert the ST-730 series probe into the tee.
3. Tighten the tee nut onto the tee to form a water-ght, compression seal.
*NOTE*It is recommended to install the ST-730 series probe tee in the pipe system where
sample water ow is vercal.
Figure 2. ST-730 with Tee Assembly
Figure 3. ST-730SS High Pressure Sensor
*NOTE*The ST-730SS probe does not require an ST-001 Tee Assembly. It has 3/4” female
NPT threaded ports.
ST-730 Series User Manual 4

4.1 Wiring
If the power ground terminal and the negave 4-20mA terminal in the controller are internally connected
(non-isolated 4-20mA input), it is unnecessary to connect the 4-20mA negave wire (green) to the 4-20mA
negave terminal in the controller. If a separate DC power supply other than that from the controller is
used, make sure that the output from the power supply is rated for 22-26 VDC @ 65mA.
*NOTE*The negave 24V power terminal (power ground) and the negave 4-20mA ter-
minal on the ST-730 series probe are internally connected.
Follow the wiring table below to connect the ST-730 series probe to a controller:
Wire Color Designaon
Red 24V +
Black 24V Power ground
White 4-20mA +
Green 4-20mA -*
Blue RS-485 A
Yellow RS-485 B
Clear Shield, earth ground
*Internally connected to the power
ground
4.2 Connecng via Bluetooth
A Bluetooth adapter (P/N: MA-WB) can be used to connect an ST-730 series probe to a smart phone with
the uPyxis® Mobile app or a computer with the uPyxis® Desktop app.
Figure 4. Bluetooth connecon to ST-730 series probe
4.3 Connecng via USB
A USB-RS485 adapter (P/N: MA-485) can be used to connect an ST-730 series probe to a computer with the
uPyxis® Desktop app.
*NOTE*Using non-Pyxis USB-RS485 adapters may result in permanent damage of the ST-
730 series probe communicaon hardware.
ST-730 Series User Manual 5

Figure 5. USB connecon to ST-730 series probe
5 Setup and Calibraon with uPyxis® Mobile App
5.1 Download uPyxis® Mobile App
Download uPyxis® Mobile App from Apple App Store or Google Play.
Figure 6.
5.2 Connecng to uPyxis® Mobile App
Turn on Bluetooth on your mobile phone (Do not pair the phone Bluetooth to the ST-730 series probe).
Open uPyxis® Mobile App. Once the app is open the app will start to search for the sensor. When the
uPyxis® Mobile App connects to the sensor then press on the ST-730 series probe.
ST-730 Series User Manual 6

Figure 7.
5.3 Calibraon Screen and Reading
When connected, the uPyxis® Mobile App will default to the Calibraon screen. From the Calibraon
screen, you can perform calibraons by pressing on Zero Calibraon,Slope Calibraon, and 4-20mA Span.
Follow the screen instrucons for each calibraon step.
Figure 8.
ST-730 Series User Manual 7

5.4 Diagnosis Screen
From the Diagnosis screen, you can check the diagnosis condition as well as Export & Upload.
Figure 9.
5.5 Device Info Screen
From the Device Info screen. You can name the Device or Product.
Figure 10.
ST-730 Series User Manual 8

6 Setup and Calibraon with uPyxis® Desktop App
6.1 Install uPyxis® Desktop App
Download the latest version of uPyxis® Desktop software package.
This setup package will download and install the Microsoft.Net Framework 4.5 (if not previously installed
on the PC), the USB driver for the USB-Bluetooth adapter (MA-NEB), the USB-RS485 adapter (MA-485),
and the main uPyxis® Desktop application. Double click the uPyxis.Setup.exe file to install.
Figure 11.
Click Install to start the installaon process. Follow the screen instrucons to complete the USB driver and
uPyxis installaon.
6.2 Connecng to uPyxis® Desktop App
When the uPyxis® Desktop App opens, to nd your device, click on Device, then Connect via USB-RS485.
Figure 12.
ST-730 Series User Manual 9

6.3 Informaon Screen
Once connected to the device, a picture of the device will appear on the top le corner of the window and
the uPyxis® Desktop App will default to the Informaon screen. On the Informaon screen you can set the
informaon descripon for Device Name and Product Name, then click Set to save.
Figure 13.
6.4 Calibraon Screen
To calibrate the device, click on Calibraon. On the Calibraon screen there are three calibraon tabs, Zero
Calibraon,Slope Calibraon, and 4-20mA Span. The screen also displays the reading of the device. The
reading refresh rate is every 4 seconds.
Figure 14.
ST-730 Series User Manual 10

6.4.1 Zero Calibraon
To perform Zero Calibraon, click on Zero Calibraon. Then follow the instrucon on how to calibrate, then
click Ok.
Figure 15.
6.4.2 Slope Calibraon
To perform Slope Calibraon, click on Slope Calibraon. Then follow the instrucon on how to calibrate,
then click Slope Calibraon.
Figure 16.
6.4.3 4-20mA Span
To perform 4-20mA Span, click on 4-20mA Span. Then follow the instrucons provided to alter the 4-20mA
output span of the sensor, then click Set 20mA Span. Each sensor format will have a maximum 20 mA range
allowed. 4-20mA Span setup must be maintained within the limit of its respecve sensor.
ST-730 Series User Manual 11

Figure 17.
6.5 Diagnosis Screen
After the device has been calibrated and installation has been completed, to check diagnosis, click on Diag-
nosis. When in the Diagnosis screen you can view the Diagnosis Condition of the device.
Figure 18.
7 Communicaon using Modbus RTU
The ST-730 series probe is congured as a Modbus slave d evice. In addion to the NTU value, many op-
erational parameters, including warning and error messages, are available via a Modbus RTU connection.
ST-730 Series User Manual 12

8 Sensor Maintenance and Precauon
When used to control product dosing, it is suggested that the automaon system be congured to provide
backup to limit potenal product overfeeds, for example by liming pump size or duraon, or by alarming
if the pumping rate exceeds a desired maximum limit.
The ST-730 series probe is designed to be easily removed, inspected, and cleaned if required. It is suggested
that the ST-730 series probe be checked for fouling and cleaned on a monthly basis. Heavily contaminated
waters may require more frequent cleanings. Cleaner water sources with less contaminaon may not re-
quire cleaning for several months.
8.1 Methods to Cleaning ST-730 Series Probe
Any equipment in contact with industrial cooling systems is subject to many potenal foulants and con-
taminants. Our inline probe cleaning soluons below have been shown to remove most common foulants
and contaminants. A small, so bristle brush, Q-Tips coon swab, or so cloth may be used to safely clean
the probe housing and the quartz optical sensor channel. These components and more come with a Pyxis
Lab Inline Probe Cleaning Solution Kit (P/N: SER-01)
Figure 19. Inline Probe Cleaning Soluon Kit
To clean the ST-730 series probe, soak the lower half of the probe in 100 mL inline probe cleaning soluon
for 30 minutes. Rinse the ST-730 series probe with dislled water and then check for the ashing blue light
inside the ST-730 series probe quartz tube. If the surface is not enrely clean, connue to soak the ST-730
series probe for an addional 30 minutes. Use the small, so bristle brush and Q-Tips coon swabs as
necessary to remove any remaining contaminants in the ST-730 series probe quartz tube.
ST-730 Series User Manual 13

8.2 Storage
Avoid long term storage at temperature over 100 °F. In an outdoor installaon, properly shield the ST- 730
series probe from direct sunlight and precipitaon.
9 Troubleshoong
If the ST-730 series probe output signal is not stable and uctuates signicantly, make an addional ground
connecon – connect the clear (shield, earth ground) wire to a conductor that contacts the sample water
electrically such as a brass pipe adjacent to the ST-730 series tee.
Carry out roune calibraon vericaon against a qualied turbidity stand ard. Aer properly cleaning the
ST-730 series sensor, carry out the zero point and slope calibration using the qualified turbidity standard.
Pyxis Lab Turbidity Standards can be purchased at www.chemtrol.com.au/contact
Figure 20. Turbidity Standards
10 Contact Us
www.chemtrol.com.au/contact
ST-730 Series User Manual 14