Pyxis ST-772 User manual

ST-772/T User Manual [email protected] | [phone]

ST-772/T Dissolved Oxygen Sensor
User Manual
December 17, 2020
Rev. 1.02
Pyxis Lab, Inc.
1729 Majesc Dr. Suite 5
Lafayee, CO 80026 USA
www.pyxis-lab.com
© 2017 Pyxis Lab, Inc.
Pyxis Lab Proprietary and Condenal

Table of Contents
1 Introducon 2
1.1 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Specicaons 4
3 Unpacking Instrument 4
3.1 Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Oponal Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Installaon 6
4.1 Submersed Floang Installaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Submersed Fixed Installaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Pipeline Installaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4 Wiring ................................................. 8
4.5 Connecng via Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Setup and Calibraon with uPyxis® Mobile App 9
5.1 Download uPyxis® Mobile App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Connecng to uPyxis® Mobile App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.3 Calibraon Screen and Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.4 Diagnosis Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.5 Device Info Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Setup and Calibraon with uPyxis® Desktop App 13
6.1 Install uPyxis® Desktop App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 Connecng to uPyxis® Desktop App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.3 Informaon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4 Calibraon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.5 Diagnosis Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Outputs 17
7.1 4–20mA Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.2 Communicaon using Modbus RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 Sensor Maintenance and Precauon 18
8.1 Methods to Cleaning the ST-772/T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Troubleshoong 19
10 Contact Us 19

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 replacement. 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 authoriza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. To receive an RMA you can generate a
request on our website at hps://pyxis-lab.com/request-tech-support/.
Pyxis Technical Support
Contact Pyxis Technical Support at [phone], [email protected], or by lling out a request for
support at hps://pyxis-lab.com/request-tech-support/.
ST-772/T User Manual [email protected] | [phone]

1 Introducon
The Pyxis ST-772/T dissolved oxygen (DO) sensor is based on the principle of uorescence quenching to
determine the dissolved oxygen content in water. It incorporates Pyxis’ advanced technology in the eld
of uorescence detecon. The ST-772/T sensor uses dual light source detecon technology with excitaon
and reference light sources, oering a wide detecon range and low detecon limit. The sensor integrates
temperature and pressure sensors, which can perform temperature and pressure compensaon for the
measurement of dissolved oxygen based on ambient environmental condions present in the applicaon
of use.
The ST-772/T sensor oers an easily replaceable, front loading DO membrane cap that has been indepen-
dently developed by Pyxis Lab, with a typical service life of up to two years. This unique DO membrane cap
design incorporates a black microporous PTFE membrane material designed to provide extreme scratch
resistance, extended life span and simple replacement. The at front-end design of the ST-772/T sensor
makes this plaorm less prone to contaminaon or fouling and is easy to clean.
The sensor body is composed of 304 stainless steel and is well suited for aggressive industrial applicaon
use. The ST-772/T sensor may be ulized in a submersed oang or submersed xed installaon format
with the Pyxis installaon assembly opons. It may also be used in an inline pressurized Tee assembly for-
mat (ST-772T Sensor opon). All opons are discussed in the Installaon secon. The ST-772/T oers both
4–20mA and RS-485 Modbus outputs and is Bluetooth enabled when used in conjuncon with the MA-CR
Bluetooth Adapter.
The ST-772/T sensor measures the paral pressure of the dissolved oxygen (DO) in water. In most applica-
ons, the source of DO is oxygen in the air. In other applicaon such as in aquaculture, the source of DO is
photosynthesis. The concentraon of dissolved oxygen is a derived value from the measured oxygen par-
al pressure. The relaonship between the DO concentraon and the oxygen paral pressure is governed
by the law of thermodynamics. The ST-772/T sensor uses the latest USGS equaon to convert the oxygen
paral pressure to DO in units of ppm or mg/L. Through setup using the uPyxis® Mobile of Desktop App,
the ST-772/T sensor can output the measured oxygen paral pressure in other units such as percentage of
oxygen saturaon.
ST-772/T User Manual [email protected] | [phone]

1.1 Main Features
The ST-772/T sensor includes the following features:
• 0.004–20 ppm measurement range
• Built-in temperature and pressure sensor with automac compensaon
• Accurate and stable measurement with ultra-low dri
• Built-in transmier without preamplier or meter head
• Dual Outputs both 4–20mA isolated signal or RS-485 Modbus
• Long-distance transmission with higher stability & accuracy
• Wireless calibraon, diagnoscs, and data trend via uPyxis® App when used with MA-CR Adapter
• The sensor can be Slope calibrated with air or air saturated water
• Zero-point calibraon with 5% Sodium Sulte soluon or Nitrogen gas
• Submersible (ST-772) or Inline (ST-772T) installaon versions
• Suitable for dissolved oxygen monitoring of:
–Acvated Sludge
–Aerated Basin
–Wastewater & Sewage Processing
–Chemical & Process Water
–Domesc Water Applicaons
–Filtraon Applicaons
–Aquaculture
–Agriculture
ST-772/T User Manual [email protected] | [phone]

2 Specicaons
Table 1. ST-772/T Specicaons
Specicaon*ST-772 ST-772T
Part Number (P/N) 53703 53719
Dissolved Oxygen Range
0.004–20 ppm or
0–200% Saturaon or
0–500 mbar PO2
Dissolved Oxygen
Resoluon 0.01 ppm
Dissolved Oxygen
Accuracy ±1% of reading or ±0.1 ppm
Method Blue Light Irradiated Emission
Red Light Quenching Excitaon
Response Time <60 seconds
DO Membrane Cap Life 2 years
Calibraon Slope calibraon: Air or Air Saturated Water
Zero calibraon: 5% Sodium Sulte or Nitrogen Gas
Outputs 4–20mA Analog Output,
RS-485 Digital Output with Modbus protocol
Installaon Submersed Floang Installaon,
Submersed Fixed Installaon
Pipeline Installaon
Cable Length Aached 10 m/30  8-Pin cable,
MA-1.5CR Cable (1.5 m/4.9  8-Pin Female
Adapter/Flying Lead)
Aached 1.5 m/4.9  8-Pin cable,
MA-1.5CR Cable (1.5 m/4.9  8-Pin Female
Adapter/Flying Lead)
Power Supply 22–26 VDC, 0.6 W
Dimension (L ×Dia) 11.65 ×1.32 inch (296 ×33.6 mm)
Weight †1.67 lb (760 g)
Material 304 Stainless Steel
Operaonal
Temperature 32–113 °F (0–45 °C)
Pressure Up to 145 psi (1.0 MPa)
Enclosure Rang IP67/IP68
Regulaon CE
*With Pyxis’s connuous improvement policy, these specicaons are subject to change without noce.
†Cables excluded
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 Pyxis Lab Customer Service at [email protected].
ST-772/T User Manual [email protected] | [phone]

3.1 Standard Accessories
3.1.1 ST-772 Standard Accessories (For Submersed Installaons)
The following accessories are included in the ST-772 sensor package for submersed installaons:
• DCC-1 Dissolved Oxygen Membrane Cap P/N: 53712
• MA-1.5CR Cable (1.5 m/4.9  8-Pin Female Adapter/Flying Lead) P/N: 50746
• MA-CR Bluetooth Adapter for 8-Pin Sensors P/N: MA-CR
• Bluetooth/USB Adapter for use with uPyxis® Desktop App P/N: MA-NEB
• User Manual available online at hps://pyxis-lab.com/support/
3.1.2 ST-772T Standard Accessories (For Pipeline Installaons)
The following accessories are included in the ST-772T sensor package for pipeline installaons:
• Tee Assembly 3/4” NPT (1x Tee, O-ring, and Nut) P/N: ST-001
• DCC-1 Dissolved Oxygen Membrane Cap P/N: 53712
• MA-1.5CR Cable (1.5 m/4.9  8-Pin Female Adapter/Flying Lead) P/N: 50746
• MA-CR Bluetooth Adapter for 8-Pin Sensors P/N: MA-CR
• Bluetooth/USB Adapter for use with uPyxis® Desktop App P/N: MA-NEB
• User Manual available online at hps://pyxis-lab.com/support/
3.2 Oponal Accessories
The following oponal accessories can be ordered at or[email protected] or the Pyxis E-Store at hps://pyxis-
lab.com/shop/
Table 2. Oponal Accessories
Accessory Name Part Number
(P/N)
MA-CR Bluetooth Adapter For 8-Pin Pyxis Sensors MA-CR
MA-150-1 Submersion Adapter Ball Float & Mounng Bracket for ST-772 Floang
Submersed Installaon
53705
MA-150-3 Floang Submersion Probe Adapter Assembly for ST-772
Floang/Submersed Installaon
50791
MA-150-4 Oponal Waterght Conduit for ST-772 — 8 /1” NPT
Floang/Submersed Installaon
50798
MA-120-B Submersion Pipe & Adapter Mounng Bracket for ST-772 Fixed Installaon 50783
ST-001 Inline Tee Assembly (3/4” FNPT, CPVC) 50704
DCC-1 Dissolved Oxygen Membrane Cap — Replacement 53712
MA-50CR Cable (15 m/50  8-Pin Male/Female Extension Cable) 50743
MA-100CR (30.5 m/100  8-Pin Male/Female Extension Cable) 50744
Pyxis Probe Cleaning Kit SER-01
ST-772/T User Manual [email protected] | [phone]

4 Installaon
4.1 Submersed Floang Installaon
The ST-772 sensor may be installed in a submersed oang applicaon using the MA-150-1 Submersion
Adapter Mounng Bracket and Ball Float and the MA-150-3 Floang Submersion Pipe Assembly. The ST-
772 dissolved oxygen sensor needs to be installed as shown in Figure 1. For installaon, users need to keep
the MA-150-1 and MA-105-3 assemblies in place permanently. For sensor replacement and maintenance,
users only need to pull the MA-150-3 and ST-772 sensor from xing bracket vercally (upwards). Oponal
MA-150-4 water-ght conduit for sensor wiring may be purchased if desired.
Figure 1. ST-772 in a submersed oang installaon
4.2 Submersed Fixed Installaon
The ST-772 sensor may be installed in a submersed xed applicaon using the MA-120-B Submersion Adapter
Mounng Bracket. The ST-772 dissolved oxygen sensor needs to be installed as shown in Figure 2. For in-
stallaon, users need to keep the MA-120-B assembly in place permanently. For sensor replacement and
maintenance, users only need to pull the MA-120-B and ST-772 sensor from xing bracket vercally (up-
wards).
ST-772/T User Manual [email protected] | [phone]

Figure 2. ST-772 in a submersed xed installaon
4.3 Pipeline Installaon
The ST-772T sensor may be installed in an inline ow applicaon using the Pyxis ST-001 Inline Tee Assembly.
The ST-001 oers 3/4” FNPT thread or socket weld adapters with unions for easy installaon and sensor
maintenance. Pyxis recommends installaon in a vercal ow format from boom up to reduce the impact
of water bubbles. To properly install the ST-772T sensor into the ST-001 Inline Tee Assembly, follow the
steps below:
1. Insert the provided O-ring into the O-ring groove on the tee.
2. Insert the ST-772T sensor into the tee.
3. Tighten the tee nut onto the tee to form a water-ght, compression seal.
Ensure the DCC-1 Dissolved Oxygen Membrane Cap is in the direcon of water ow as shown in Figure 3.
Figure 3. ST-772T in a pipeline installaon using ST-001 Inline Tee Assembly
ST-772/T User Manual [email protected] | [phone]

4.4 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 (gray) 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 @ 65 mA.
*NOTE*The negave 24V power terminal (power ground) and the negave 4–20mA ter-
minal on the ST-772/T sensor are internally connected.
Follow the wiring table below to connect the ST-772/T sensor to a controller:
Table 3.
Wire Color Designaon
Red 24V +
Brown 24V Power ground
Gray*4–20mA -
White 4–20mA +
Pink RS-485 C
Blue RS-485 A
Yellow RS-485 B
Green Earth ground
Black Shield
*Internally connected to the power
ground
4.5 Connecng via Bluetooth
A Bluetooth adapter (P/N: MA-CR) can be used to connect a ST-772/T sensor to a smart phone with the
uPyxis® Mobile App or a computer with a Bluetooth/USB Adapter (P/N: MA-NEB) and the uPyxis® Desktop
App.
Figure 4. Bluetooth connecon to ST-772/T sensor
ST-772/T User Manual [email protected] | [phone]

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 5.
5.2 Connecng to uPyxis® Mobile App
Turn on Bluetooth on your mobile phone (Do not pair the phone Bluetooth to the ST-772/T sensor). Open
uPyxis® Mobile App. Once the app is open the app will start to search for the sensor. Once the uPyxis®
Mobile App connects to the sensor, press the ST-772/T sensor.
Figure 6.
ST-772/T User Manual [email protected] | [phone]

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,Air Calibraon, and 4–20mA Span.
*NOTE*Before calibrang, remove the ST-772 dissolved oxygen sensor from the water
and wipe it with a damp cloth to remove debris and any biofouling. If there is water on the
membrane, dry it with a so cloth, taking special care not to damage the membrane.
Figure 7.
5.3.1 Zero Calibraon
1. Place the sensor in Nitrogen Gas or 5% Sodium Sulte soluon (anaerobic water).
2. Let the ST-772/T sensor stand for a minimum of 15 minutes. Observe the values being displayed on
the Calibraon screen.
3. Once the displayed oxygen and temperature values are stable, press Zero Calibraon to perform a
zero calibraon.
4. If the calibraon is successful, the interface will return a message ”Calibraon Succeeded”. If the
calibraon fails, press Zero Calibraon again and repeat.
ST-772/T User Manual [email protected] | [phone]

5.3.2 Air (Slope) Calibraon
1. Place the ST-772/T sensor in the air with a stable temperature or in air-saturated water.
2. Let the ST-772/T sensor stand for a minimum of 6 minutes. Observe the values being displayed on
the Calibraon screen.
3. Once the displayed oxygen and temperature values are stable, press Air Calibraon to perform an air
(slope) calibraon.
4. Enter the humidity value:
• If you are using air for calibraon, you will need to enter the real-me (current) humidity value.
• If you are using air-saturated water for calibraon, you will need to enter a humidity value of
”1”.
5. If the air (slope) calibraon was successful, the interface will return a message ”Calibraon Suc-
ceeded”. If the calibraon fails, press Air Calibraon again and repeat.
5.3.3 4–20mA Span
The default 4–20mA span is 20 mA = maximum range (20 ppm) and 4 mA = 0 ppm dissolved oxygen in water.
Press 4–20mA Span to change the dissolved oxygen in water value corresponding to the 20 ppm (maximum
range) output.
*NOTE*The 4–20mA Span feature allows users to reduce the upper 20 mA output scale
only. It cannot increase the upper limit of the sensor.
ST-772/T User Manual [email protected] | [phone]

5.4 Diagnosis Screen
From the Diagnosis screen, you can check the diagnosis condion as well as Export & Upload. This feature
may be used for technical support when communicang with [email protected].
To preform a Cleanliness and Selife Check, rst select the Diagnosis Condion which denes the uid type
that the ST-772/T sensor in currently measuring, then press Cleanliness and Selife Check. If the sensor is
clean, a Clean message will be shown. If the sensor is severely fouled, a Please replace the DO membrane
cap message will be shown. In this case, follow the procedure in the Methods to Cleaning the ST-772/T
secon of this manual.
Figure 8.
ST-772/T User Manual [email protected] | [phone]

5.5 Device Info Screen
From the Device Info screen. You can name the Device or Product as well as set the Modbus address.
Figure 9.
6 Setup and Calibraon with uPyxis® Desktop App
6.1 Install uPyxis® Desktop App
Download the latest version of uPyxis® Desktop soware package from: hps://pyxis-lab.com/upyxis/ this
setup package will download and install the Microso.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 applicaon. Double click the uPyxis.Setup.exe le to install.
Figure 10.
Click Install to start the installaon process. Follow the screen instrucons to complete the USB driver and
uPyxis® installaon.
ST-772/T User Manual [email protected] | [phone]

6.2 Connecng to uPyxis® Desktop App
When the uPyxis® Desktop App opens, click on Device, then click Connect via USB-Bluetooth.
Figure 11.
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,Product Name, and Modbus Address, then click Apply Sengs
to save.
Figure 12.
ST-772/T User Manual [email protected] | [phone]

6.4 Calibraon Screen
From the Calibraon screen, you can perform calibraons by pressing on Zero Calibraon,Air Calibraon,
and 4–20mA Span.
*NOTE*Before calibrang, remove the ST-772 dissolved oxygen sensor from the water
and wipe it with a damp cloth to remove debris and any biofouling. If there is water on the
membrane, dry it with a so cloth, taking special care not to damage the membrane.
Figure 13.
6.4.1 Zero Calibraon
1. Place the sensor in Nitrogen Gas or 5% Sodium Sulte soluon (anaerobic water).
2. Let the ST-772/T sensor stand for a minimum of 15 minutes. Observe the values being displayed on
the Calibraon screen.
3. Once the displayed oxygen and temperature values are stable, click Zero Calibraon to perform a
zero calibraon.
4. If the calibraon is successful, the interface will return a message ”Calibraon Succeeded”. If the
calibraon fails, click Zero Calibraon again and repeat.
ST-772/T User Manual [email protected] | [phone]

6.4.2 Air (Slope) Calibraon
1. Place the ST-772/T sensor in the air with a stable temperature or in air-saturated water.
2. Let the ST-772/T sensor stand for a minimum of 6 minutes. Observe the values being displayed on
the Calibraon screen.
3. Once the displayed oxygen and temperature values are stable, click Air Calibraon to perform an air
(slope) calibraon.
4. Enter the humidity value:
• If you are using air for calibraon, you will need to enter the real-me (current) humidity value.
• If you are using air-saturated water for calibraon, you will need to enter a humidity value of
”1”.
5. If the air (slope) calibraon was successful, the interface will return a message ”Calibraon Suc-
ceeded”. If the calibraon fails, click Air Calibraon again and repeat.
6.4.3 4–20mA Span
The default 4–20mA span is 20 mA = maximum range (20 ppm) and 4 mA = 0 ppm dissolved oxygen in water.
Click 4–20mA Span to change the dissolved oxygen in water value corresponding to the 20 ppm (maximum
range) output.
*NOTE*The 4–20mA Span feature allows users to reduce the upper 20 mA output scale
only. It cannot increase the upper limit of the sensor.
Figure 14.
ST-772/T User Manual [email protected] | [phone]

6.5 Diagnosis Screen
Aer the device has been calibrated and installaon has been completed, to check diagnosis, click on Diag-
nosis. When in the Diagnosis screen you can view the Diagnosis Condion of the device. This feature may
be used for technical support when communicang with [email protected]. To preform a Cleanliness
and Selife Check, rst select the Diagnosis Condion which denes the uid type that the ST-772/T sensor
is currently measuring, then click Cleanliness and Selife Check. If the sensor is clean, a Clean message
will be shown. If the sensor is fouled, a Please replace the DO membrane cap message will be shown. In
this case, follow the procedure in the Methods to Cleaning the ST-772/T secon of this manual.
Figure 15.
7 Outputs
7.1 4–20mA Output Setup
The 4–20mA output of the ST-772 sensor is scaled as:
• Dissolved Oxygen:
–4 mA = 0 ppm
–20 mA = 20 ppm
7.2 Communicaon using Modbus RTU
The ST-772/T sensor is congured as a Modbus slave device. In addion to the ppm dissolved oxygen value,
many operaonal parameters, including warning and error messages, are available via a Modbus RTU con-
necon. Contact Pyxis Lab Customer Service ([email protected]) for more informaon.
ST-772/T User Manual [email protected] | [phone]