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Industrial Online pH / ORP Controller – Colour LCD, 4–20mA & RS485 Modbus

Industrial Online pH / ORP Controller – Colour LCD, 4–20mA & RS485 Modbus

From $258.88Sale Price
A panel-mounted industrial pH/ORP controller designed for continuous water quality monitoring in treatment plants, aquaculture, chemical processing, and industrial systems. Featuring a colour LCD display, 4–20mA analog output, and RS485 Modbus communication, this unit integrates seamlessly into PLC and SCADA environments.
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Controller-4-20MA
Plastic-Temp-4-20MA
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PTFE-4-20MA
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This industrial online pH / ORP controller provides reliable real-time monitoring and control of acidity/alkalinity (pH) and oxidation-reduction potential (ORP) in process water systems.

Designed for permanent installation, the controller features a colour LCD display for clear data visualisation and easy configuration. The system supports standard 4–20mA output for integration with PLCs, DCS systems, or chart recorders, along with RS485 Modbus communication for digital network integration.

Electrode options include plastic or PTFE housings, making the system suitable for standard water applications or chemically aggressive environments.

The controller is widely used in:

  • Water and wastewater treatment plants

  • Chemical dosing systems

  • Cooling towers and boiler systems

  • Aquaculture and fish farming

  • Industrial effluent monitoring

  • Food and beverage processing

Available in standard 220V AC power supply or custom 24V DC configuration for control panel integration.

Key Features

  • Continuous online pH and ORP monitoring

  • Colour LCD display

  • 4–20mA analog output

  • RS485 Modbus communication

  • Panel-mounted industrial design

  • Plastic or PTFE electrode options

  • 220V AC (standard) or 24V DC (customisable)

Why Buy from ProSense Instruments?

  • Australian Supply & Fast Dispatch - Local stock on selected products, with same-day dispatch on eligible in-stock orders and pickup by arrangement.

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  • Competitive Pricing & Quantity Discounts - Request a quote for bulk orders, projects and ongoing supply.

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  • Purchase Orders Welcome - 30-day payment terms available for approved accounts.

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  • Free Technical Support - Practical product selection and setup assistance before and after purchase.

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  • Three Specialist Brands, One Team - ProSense Instruments, ProSense Solutions and ProSight Software bring instruments, integrated monitoring solutions and cloud software together under one roof.

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  • Industrial IoT & Project Assistance - Support with monitoring systems, connectivity, configuration and tailored solutions.

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  • Supplying Australian Industry - Instruments and monitoring solutions for industrial, utility, agricultural and government applications.

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