Final configuration is confirmed in the quotation.
Industrial Water Quality pH Sensor
IP68 industrial pH probe for continuous water and wastewater monitoring, with pH 0–14 measurement and RS485 Modbus RTU or 4-20 mA output families.
Start with the information you have. Exact model, interface and certificates are confirmed in writing before order.
Image details
Representative industrial pH probe visual derived from a reviewed exact-model reference and independently de-identified. It is not the final ordered-model photograph; mechanical type, material, connector, cable, temperature and pressure rating, output and mounting are confirmed in the quotation.
Related solution: Water Monitoring
Where the hardware sits in the monitoring path
A planning view, not a fixed bundle. Signal type, protocol, power, network and the customer endpoint are confirmed before quotation.
Customer system
SCADA, BMS or customer-owned platform
Specifications
- 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
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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
Representative site context. Sensors, interfaces, enclosure, power and mounting are confirmed against the actual project before quotation.
Choose the output and mechanical configuration together
The reviewed documents cover several related configurations. The values below are selectable limits, not a claim that every probe combines every option.
- The reviewed 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 reviewed supply is 7–30 VDC with consumption below 0.15 W.
Show 3 more reviewed selection notes
Model-selection reference
Water & Utilities Hardware Catalog
Use this audited section to compare available hardware configurations. The representative website image is not an exact model photograph; the ordered configuration is confirmed in the quotation.
- Catalog section
- Water-quality electrodes and probes
- SG-coded options
- 28
- PDF pages
- 4
Continue product selection
Compare adjacent hardware families for the same monitoring path. The final combination is checked against the project I/O, protocol, power and enclosure requirements.
How to choose
- 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
Use this probe for continuous pH monitoring in water tanks, treatment basins, wastewater processes and compatible process-water lines. The reviewed 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
What to include in your quote request
- 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
- Calibration buffers, storage solution, cleaning interval, quantity and documentation
Related selection guides
Related resources
Frequently asked questions
Should I select RS485 Modbus RTU or 4-20 mA?
Choose the output from the available PLC, RTU or gateway input and the required cable run. The reviewed 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. Reviewed 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 reviewed 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 reviewed 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 Water & Utilities Hardware Catalog linked on this page. It lists audited SG-coded selections; the ordered configuration is confirmed in the quotation.
Will it work with my existing system?
Compatibility is reviewed against your field signals, protocols and upstream platform. Typical pairings include 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.