PH-302
PH-302 Industrial pH/ORP Controller
PH-302 industrial pH/ORP controller for wastewater and process monitoring with isolated 4–20mA, RS485 Modbus RTU and two relay…
View specifications →Tenber Liquid Analysis
Industrial pH & ORP Controllers
Industrial pH controllers and ORP controllers are selected by the liquid composition, temperature, sensor material, installation and cleaning conditions. Match the controller and electrode together for…
Product Range
Available Models
Compare verified specifications and send your process conditions for model selection.
PH-303
Tenber PH-303 pH ORP Controller
Compact industrial pH/ORP controller with two isolated 4–20mA outputs, Pt1000 or NTC10K temperature compensation, and panel, wall or…
View specifications →
PHS-3301
Tenber PHS-3301 pH ORP Controller
144 mm industrial pH/ORP controller with dual isolated 4–20mA outputs, RS485 Modbus RTU, three relay functions and 500,000-record…
View specifications →
POP-3301
Tenber POP-3301 Dual-Channel pH ORP Controller
Dual-channel online pH/ORP controller with two isolated 4–20mA outputs and RS485 Modbus RTU.
View specifications →Industrial pH & ORP Measurement
Industrial pH controllers and ORP controllers for process water
Industrial pH controllers and ORP controllers are selected by the liquid composition, temperature, sensor material, installation and cleaning conditions. Match the controller and electrode together for wastewater, electroplating and chemical dosing systems.
Typical Applications
Wastewater neutralization, electroplating process water, chemical dosing, fermentation and environmental monitoring.
Selection Information
Confirm the measuring range, electrode material, temperature compensation, installation method, cable length and expected cleaning conditions.
Control-System Integration
Selected models provide 4–20mA, relay and RS485 Modbus RTU options. The exact interface and control functions should be confirmed before quotation.
Review industrial applications, learn about technical service, or send your process conditions for model selection.
Complete Measuring System
Match the controller, sensor and installation
Reliable online measurement depends on the complete configuration, not only the controller model.
Controller & Sensor Pairing
Pair the controller with an electrode selected for the liquid, temperature and installation. Electroplating and strongly corrosive wastewater may require a chemically resistant body, suitable reference junction and protective holder.
Recommended Project Fit
Best suited to neutralization, chemical dosing, electroplating, scrubber circulation and other processes where pH or ORP must be monitored continuously.
See application solutions or send your process conditions for a controller and sensor recommendation.
Selection Guide
Information needed for an accurate recommendation
A controller should be selected together with the sensor, installation and signal requirements. Send the following information so the configuration can be reviewed before quotation.
- Measurement parameter and required range
- Liquid type and chemical composition
- Process temperature and pressure
- Sensor installation and cable length
- 4–20mA, relay or RS485 requirements
- Expected purchase quantity
Frequently Asked Questions
Can the controller connect to a PLC?
Selected models provide 4–20mA and RS485 Modbus RTU outputs. Confirm the exact interface when requesting a quotation.
Can Tenber recommend a matching sensor?
Yes. Send the liquid, range, temperature, pressure and installation method so the controller and sensor can be selected together.
Do you support batch and OEM supply?
Tenber supports distributor and project enquiries. OEM details are confirmed according to the model and order quantity.
Model Comparison
Choose a pH / ORP controller by integration requirement
The controller is only one part of the measuring loop. Use this table to narrow the model, then confirm the electrode, temperature compensation, installation and control-system requirements before ordering.
| Model | Measurement | Documented integration | When to consider it |
|---|---|---|---|
| PH-303 | pH −2 to +16 / ORP ±2000 mV / temperature −10 to +130°C | Two isolated 4–20mA outputs | Projects requiring two isolated analogue signals without verified RS485 or relay functions. |
| PH-302 | Selectable pH or ORP, plus temperature | One isolated 4–20mA output, RS485 Modbus RTU and two relay controls | Compact panels that need digital communication as well as analogue and relay functions. |
| PHS-3301 | pH / ORP measurement | Two isolated 4–20mA outputs and RS485 Modbus RTU | 144 mm controller applications that need broader documented integration functions. |
RS485 is model-specific: PH-303 is documented with two isolated 4–20mA outputs, while PH-302 and PHS-3301 documentation identifies RS485 Modbus RTU. Review the sensor and electrode range together with the controller. For a practical comparison, read the industrial pH controller for wastewater 3-model guide.
Wastewater and neutralization
Start with the liquid composition, expected pH or ORP range, temperature, pressure and fouling conditions. Then select the electrode and installation point.
View wastewater selection guide →Chemical process monitoring
Acids, alkalis, fluoride, salts, oils and cleaning chemicals can change the electrode choice even when the controller range looks suitable.
View chemical-process guide →Need a matched configuration?
Send the liquid, range, temperature, pressure, mounting, cable, signal, control logic, quantity and destination country.
Discuss your application →