Illustration: water-monitoring site with field instruments, an RTU enclosure and tank infrastructure.
Check irrigation or aquaculture water
Follow the selected water-quality parameter over time, then compare unusual readings with a field check. Probe placement, cleaning and calibration are part of keeping the record useful.
Monitor a water-treatment point
Treatment and process teams can collect readings from suitable tanks or lines. Confirm the medium, temperature, pressure and mounting before choosing a probe; one parameter does not describe every aspect of water quality.
Specifications & version options
Range / resolution
pH 0–14 / 0.01 pH
Listed accuracy / response
0.01 pH / 8 or 10 s to 98% in flowing liquid, by configuration
Output
RS485 Modbus RTU or 4-20 mA by selected variant
Supply / consumption
7–30 VDC / <0.15 W
Protection
IP68 probe
Mechanical options
Direct cable, PG13.5/M8, NPT3/4 direct cable or NPT3/4 with M16 connector, by variant
Show 2 more specification rows
Temperature / pressure
0–60, 0–80 or 0–100 °C and 0.6, 0.8 or 1 MPa, by variant
Body / cable
Ø12 × 170 mm or Ø31 × 180 mm body; 5 m, 10 m or project-specific cable
Need to connect this equipment to an existing controller or platform?
Share your current model, a photo or the connection you need. We help assess interfaces, power and the required configuration.
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.
Customer platform or an agreed third-party service
How the model is selected
Check the installation, electrical interfaces and documents before choosing the model.
Site requirement
Application, medium, mounting and environment
Hardware configuration
Signal, protocol, power and enclosure
Your quotation
Model, quantity, certificates and delivery
Connecting field equipment
Illustration: remote-monitoring integration with field enclosure, gateway, power and industrial equipment.
Choose the output and mechanical configuration together
The specifications cover several probe configurations. Select the range, connection, output and power together; available options vary by model.
The measurement range is pH 0–14 with 0.01 pH resolution and a datasheet-listed accuracy of 0.01 pH.
Response is listed as 8 or 10 seconds to 98% in flowing liquid, depending on the selected configuration.
Select RS485 Modbus RTU or 4-20 mA together with the compatible receiving input. The supply is 7–30 VDC with consumption below 0.15 W.
Show 3 more selection notes
Direct-cable, PG13.5/M8 and NPT3/4 threaded bodies with direct cable or an M16 waterproof connector are configuration choices, not universal features.
Temperature limits of 0–60, 0–80 or 0–100 °C and pressure limits of 0.6, 0.8 or 1 MPa depend on the selected mechanical variant.
Install the electrode vertically or at an angle with the sensing end down, away from trapped air and sediment. Keep the glass electrode wet in storage solution and plan periodic cleaning and calibration.
Continue product selection
Compare adjacent hardware families for the same monitoring path.
Choose continuous immersion, a flow cell or a threaded pipeline body from the liquid temperature, pressure, mounting access and cleaning method.
Select RS485 Modbus RTU or 4-20 mA together with the available PLC, RTU or gateway input; these are separate output configurations.
Confirm cable length, body and connector, calibration buffers, storage method and cleaning interval before the installation hardware is released.
Compatible with
PLC, RTU or gateway input matched to the selected RS485 Modbus RTU or 4-20 mA output
Continuous immersion in tanks and treatment basins after mounting and maintenance access are reviewed
Threaded pipe or flow-cell installations using the selected pressure-rated mechanical configuration
Remote telemetry through a separate industrial gateway or RTU
Typical package
Industrial pH probe with the selected mechanical, temperature and pressure configuration
Selected RS485 Modbus RTU or 4-20 mA output and compatible receiving input
5 m, 10 m or project-specific cable and the applicable connector or threaded body
Immersion bracket, flow-cell or threaded installation hardware as required
Calibration buffers, storage solution and project-specific cleaning notes
Applications
Instruments, enclosure, power and mounting are selected for the actual tank, well, reservoir or pump station.
Use this probe for continuous pH monitoring in water tanks, treatment basins, wastewater processes and compatible process-water lines. This product family covers pH 0–14 measurement with RS485 Modbus RTU or 4-20 mA output families. Mechanical body, connector, cable, temperature rating and pressure rating vary by configuration and must be selected together before quotation.
Water-treatment and wastewater pH monitoring with planned calibration and cleaning access
Tank, basin and process-water immersion points where the electrode can remain wet
Threaded pipeline or flow-cell installations using a compatible pressure-rated variant
PLC, SCADA and remote-telemetry projects using RS485 Modbus RTU or 4-20 mA by configuration
Choose the output from the available PLC, RTU or gateway input and the required cable run. The specified product family provides RS485 Modbus RTU or 4-20 mA by configuration; the quotation confirms one compatible probe, wiring and receiving-input path.
Which temperature and pressure rating applies?
The rating depends on the mechanical variant. Available configurations list 0–60, 0–80 or 0–100 °C and 0.6, 0.8 or 1 MPa. Share the liquid temperature, normal pressure, credible peak pressure and mounting method so the correct body can be selected.
How is the pH probe calibrated?
The RS485 configuration supports pH 4, pH 7 and pH 10 buffer calibration using one-, two- or three-point procedures. The calibration method, buffer set and acceptance interval are confirmed for the project.
How should the probe be installed?
Install it vertically or at an angle with the sensing end down. Avoid trapped bubbles, direct sediment loading and inaccessible locations. Immersion, flow-cell and threaded installations need different mechanical configurations.
What routine care does the glass electrode need?
Keep the glass electrode wet in 3 M KCl or the specified storage solution when it is out of service. Plan cleaning and calibration access; the guidance uses three- or six-month cleaning intervals depending on site fouling.
What should I provide when requesting a quote for the Industrial Water Quality pH Sensor?
Water / wastewater type, expected pH range and fouling conditions; Liquid temperature, normal / peak pressure and immersion / flow-cell / threaded mounting; Required RS485 Modbus RTU or 4-20 mA output and receiving PLC / RTU / gateway input; Body, connector, cable length, bracket and maintenance access
Where can I compare available model options?
Open the Application selection guide linked on this page. Use it to compare equipment options before requesting a configuration.
Will it work with my existing system?
Check the field signal, supply, protocol and receiving platform against the selected model. The connection options listed on this page are a starting point; send your equipment model or interface document so we can check the combination before ordering.
Product-family reference. Final ordered model and specifications are confirmed in the written quotation.
