Ask for a sample or a small pilot. Availability, minimum quantity and sample charges depend on the selected model.
Price & delivery
Range, interface, accessories, quantity and destination affect the quote. Stock, lead time, freight, taxes and delivery terms need confirmation.
Warranty & support
Coverage, duration, exclusions and the fault-assessment process are confirmed for the quoted model before order.
Certificates & documents
Tell us the destination and required standard. We check the exact model, document revision and available evidence; a family listing is not certification.
Public documents describe this product family and selection options. Wiring, register maps and compliance documents must match the model and version selected for your order.
Water & Utilities Hardware Catalog PDF · English · 388 KiB File revision: 2026-07-22 · 82cac85fcd00
Need documents for engineering or purchasing?
Choose what you need. We first identify the model and revision, then confirm which documents can be supplied. The request does not imply that every document is available.
Public now
Public selection guidance and model-selection catalogue
Check for the selected model
Exact-model datasheet · Wiring / pinout · Register map, protocol or sample data · Model-specific certificates · Calibration and measurement evidence · Dimensions / installation drawing
Customer platform or an agreed third-party service
How the model is selected
The written quotation ties the site requirement to one reviewed hardware configuration.
Site requirement
Application, medium, mounting and environment
Hardware configuration
Signal, protocol, power and enclosure
Quote confirmation
Model, quantity, certificates and delivery
Remote integration context
Sensors, interfaces, enclosure, power and mounting are confirmed against the actual project before quotation.
Choose the dissolved-oxygen type before quotation
The reviewed product record contains three probe types with different range, accuracy, response and wetted-material scopes.
Type A covers 0–20 mg/L at ±0.3 mg/L with T90 under 100 seconds for freshwater, aquaculture and similar general-water duties.
Types B and C cover 0–20 or 0–50 mg/L at ±0.2 mg/L with T90 under 40 seconds; the wetted-material scope differs between the performance and anti-corrosion versions.
The reviewed electrical configuration provides RS485 Modbus RTU and 4-20 mA at the same time. RS485 data includes dissolved oxygen, saturation and temperature.
Show 3 more reviewed selection notes
The conservative supply limit shared by the reviewed specification and manual is 7–28 VDC. Final cable, controller input, grounding and surge protection are checked with the site.
The fluorescent surface must be kept clean and free of bubbles. Air and zero-oxygen calibration are documented; fluorescent-cap condition and replacement remain maintenance items.
The quotation confirms the final model, configuration, certificate requirements, price and availability.
Model-selection reference
Water & Utilities Hardware Catalog
Compare equipment options in this catalog section.
Select Type A, B or C from the water chemistry, 0–20 or 0–50 mg/L range, required ±0.3 or ±0.2 mg/L accuracy, response time and wetted-material requirement.
Use the simultaneous RS485 Modbus RTU and 4-20 mA outputs only after the receiving PLC, RTU or logger inputs, register map and 7–28 VDC supply have been checked.
Provide immersion depth or pipe geometry, NPT3/4 mounting, pressure, temperature, cable run, bubble risk and cleaning / calibration access.
Compatible with
PLC, RTU or water-quality controller accepting RS485 Modbus RTU and 4-20 mA
4G or Ethernet telemetry gateways with a documented RS485 register map
Pipe or immersion installations within the reviewed pressure and temperature limits
Aquaculture, aeration-basin and surface-water monitoring points with planned cleaning and calibration access
Typical package
Selected Type A, B or C optical dissolved-oxygen probe
5 m field cable as the reviewed default; other length stated in the quotation
Optional bracket or NPT3/4 pipe hardware selected for the installation
PLC, RTU, controller or telemetry gateway only when listed in the quotation
Register-map, wiring, calibration and maintenance notes for the ordered configuration
Applications
Instruments, enclosure, power and mounting are selected for the actual tank, well, reservoir or pump station.
Use this fluorescence optical probe for continuous dissolved-oxygen monitoring in aquaculture tanks, wastewater aeration basins, surface water and compatible process-water points. Select Type A, B or C from the required range, accuracy, response time, wetted materials and water chemistry; the variants are not interchangeable.
Aquaculture dissolved-oxygen monitoring with temperature compensation
Wastewater aeration-basin trend monitoring and alarm input
River, channel and surface-water dissolved-oxygen stations
RS485 or 4-20 mA measurement points connected to an existing PLC, RTU or logger
Which dissolved-oxygen range and accuracy should I order?
Type A is 0–20 mg/L at ±0.3 mg/L. Types B and C can be 0–20 or 0–50 mg/L at ±0.2 mg/L. Share the water type, expected normal and upset range, response requirement and corrosion conditions so the correct type can be quoted.
Does the probe provide both RS485 and 4-20 mA?
Yes. The reviewed electrical configuration provides RS485 Modbus RTU and 4-20 mA simultaneously. Confirm the PLC, RTU or logger input, register map, cable length and power arrangement before commissioning.
What calibration and maintenance does an optical DO sensor need?
The reviewed manual documents air and zero-oxygen calibration. Keep the fluorescent surface clean, prevent bubbles from remaining on it and inspect the fluorescent cap. Cap life depends on use and water conditions; it is not a maintenance-free item.
Can the dissolved-oxygen probe be used in a pipe or under water?
The reviewed scope supports pipe or immersion installation, IP68 protection, NPT3/4 upper and lower threads, operation from -5 to +60 °C and working pressure up to 0.8 MPa. The bracket, insertion arrangement and service access still need site review.
What should I provide when requesting a quote for the Optical Dissolved Oxygen Sensor for Water & Wastewater?
Application, water chemistry and expected normal / upset dissolved-oxygen range; Required Type A / B / C accuracy and response time; Water temperature, pressure, flow, immersion depth or pipe installation; Receiving PLC / RTU / logger, RS485 register-map needs, analog input and available 7–28 VDC supply
Where can I compare available model options?
Open the Water & Utilities Hardware Catalog linked on this page. Use it to compare equipment options before requesting a configuration.
Will it work with my existing system?
Compatibility is reviewed against your field signals, protocols and upstream platform. Typical pairings include PLC, RTU or water-quality controller accepting RS485 Modbus RTU and 4-20 mA, 4G or Ethernet telemetry gateways with a documented RS485 register map, Pipe or immersion installations within the reviewed pressure and temperature limits.
Product-family reference. Final ordered model and specifications are confirmed in the written quotation.
