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AST-DO-UNIVERSAL Galvanic Dissolved Oxygen Sensors for Inline, Immersion, Submersion, Sanitary & HOT-TAP Installations Rugged Industrial High Stability Thick Membrane is ideal for Continuous Measurement in Tough Applications such as Processes with Abrasive Slurries, High Levels of Organic and Biological Content & Solutions with High Turbidity
CLICK HERE for details on SMART DIGITAL HiQDT MODBUS RTU configuration of dissolved oxygen sensors
The AST-DO-UNIVERSAL is a robust thick high stability membrane covered self-polarizing active style galvanic cell that generates a millivolt electrical signal proportional to the oxygen pressure it senses. The AST-DO-UNIVERSAL probe is very rugged, easy to use and proven solution for measurements from tough industrial, municipal, environmental and aquaculture and for other difficult service condition applications.
The AST-DO-UNIVERSAL-CONVERTIBLE configuration is suitable for inline, immersion or submersible type installations (see sections below for more details & specifics).
3TX-DO-UNIVERSAL 3/4"-3/4" Inline, Immersion, Submersible Convertible Industrial Dissolved Oxygen Sensor Specifications & Wiring Schematic for
Special Features Highlighting Unique Technical Advantages of AST-DO-UNIVERSAL Dissolved Oxygen Sensors
Core Features of Rugged AST-DO-UNIVERSAL Industrial Dissolved Oxygen Sensors
AST-DO-UNIVERSAL Galvanic Dissolved Oxygen Sensor Specifications
Measurement Range: 0-600 percent (%) saturation, 0-60 ppm range (Lowest Limit 0.1ppm) *
* Contact factory if you plan to measure dissolved oxygen levels above 400% saturation or 40ppm prior to purchase.
Quick Disconnect Snap Connector Option
AST-DO-UNIVERSAL dissolved oxygen sensors with integral preamplifier configuration can be supplied with the rugged field ready Q7M/Q7F NEMA 6P rated quick disconnect snap connector system. See pictures shown below for visualization of this option.
Installation Guide for Q7M/Q7F Quick Disconnect Snap Connector for Dissolved Oxygen sensors
Twist Lock Quick Disconnect Bayonet Inline Installation Style Option
The AST-DO-UNIVERSAL-TWISTLOCK configuration is available for use with the twist lock quick disconnect bayonet 1"MNPT fittings for inline installations that may require frequent removal from the process for cleaning. This installation hardware scheme can be visualized and the drawing downloaded from the twist lock pH/ORP configurations webpage.
Sanitary Tri-Clover & HOT-TAP Valve Retractable Installation Style Options
The AST-DO-UNIVERSAL-SANITARY-HOT-TAP configuration is available for use with the 316SS installation hardware for sanitary tri-clover process connections or for valve retractable installations to remove the sensor will the process is still running. The installation hardware scheme for the sanitary tri-clover type processes can be visualized and the drawing downloaded from the sanitary pH/ORP configurations webpage. The installation hardware scheme for the HOT-TAP valve retractable type processes can be visualized and the drawing downloaded from the HOT-TAP valve retractable pH/ORP webpage and the process connection itself can be viewed from the HOT-TAP valve retractable hardware webpage.
Waterproofing Options for Fully Submersible Assemblies
All of the AST-DO-UNIVERSAL configurations (Convertible, Twist Lock & Sanitary/HOT-TAP) are available for fully submersible installations with the use of an immersion tube (a.k.a. standpipe or guiderod) when a suitable waterproofing sealing option is factory installed. The option must be installed at time of order for the AST-DO-UNIVERSAL sensor and cannot be installed subsequently. The recommended waterproofing options are the WPIT sealing which is quite sufficient for most such submersible installation uses or else the WPB or WPH sealing for an even more robust sealing assembly for the most aggressive service conditions.
3TX-DO & 3TX-DO-X Dissolved Oxygen (DO) Transmitter Specifications
See main 3TX webpage for all shared common transmitter specifications and documentation
Measurement Range: 0-400 percent (%) saturation, 0-40 ppm range *
Wiring Schematic Details for Without Preamplifier & with Integral Preamplifier Configurations of
Installation Options for Transmitters: 35mm DIN-RAIL; Wall, Panel or Pipe with IP65 or NEMA 4X Rated Enclosures
* Special order version of 3TX-DO is available for use up to 600% saturation or 60ppm.
Calibration Performed: Slope (span) obtained from galvanic DO cell clean and dry in air via fully automatic calibration.
Display Features: Absolute mV of connected sensor, DO ppm for 100% saturation condition at current temperature, salinity & air pressure
Links for AST-DO-UNIVERSAL Sensor Usage Manual & Complete Literature Package
Selected Photos for Visualization of Installations
AST-DO-UNIVERSAL dissolved oxygen convertible style galvanic DO sensor with thick rugged removable protective guard securely installed via 3/4" NPT threads for submersible use with heavy abrasives installations where damage may occur to membrane from large particulates or other abrasive constituents in the measured solution
AST-DO-UNIVERSAL dissolved oxygen convertible style galvanic DO sensor shown threaded into tee with front 3/4" MNPT threads for inline use. Alternate inline installation scheme is using the 1"MNPT twist lock quick disconnect bayonet style hardware setup to allow for fast and simple removal & installation from process without damaging the cable due to coiling.
AST-DO-UNIVERSAL dissolved oxygen convertible style galvanic DO sensor in the with integral preamplifier and Q7M quick disconnect snap connector configuration. Sensor is shown interfaced to NEMA 6P rated Q7F snap to tinned leads extension cable for convenient removal from field installation for periodic cleaning, recalibration and rebuilding of the galvanic dissolved oxygen cell.
The twist lock quick disconnect configuration of the AST-DO-UNIVERSAL dissolved oxygen (DO) sensor in shown above with a 1”MNPT KYNAR (PVDF) twist lock receptacle installed onto the sensor. This configuration allow for easy insertion and removal from inline installations for cleaning of the membrane, recalibration and rebuilding the galvanic DO cell without coiling the sensor cable. The sensor cable is also available with NEMA 6P rated waterproof snap connectors allows for the sensor to be disconnected quickly and easily from both the process (twist lock bayonet style installation) as well as the mating dissolved oxygen (DO) transmitter.