PCE Instruments PCE-PHC 50 Process pH Controller Panel Mount, 4-20 mA, RS485, Relay Output

The pH Controller is an industrial measurement system designed for the continuous monitoring and control of the pH value in liquids. With its robust construction and integrated temperature compensation, the pH Controller ensures precise and stable measurement results even under demanding conditions. Measurements are taken using a high-quality glass electrode, which, in combination with a reference electrode, determines the pH value with precision. The pH Controller has a wide measuring range from pH 0 to 14 and a high resolution of 0.001 pH. The accuracy is ±0.1 pH, ensuring that even the smallest changes are reliably detected.

The system is equipped with a 3-inch TFT color display, which clearly shows all relevant measured values, status indicators, and settings. Operation is via an intuitive keypad with menu navigation. The pH Controller offers various operating modes, including measurement, calibration, and storage functions. Calibration can be performed on a one- or two-point basis to achieve optimal measurement results. The integrated real-time temperature compensation ensures accurate readings even at varying temperatures.

For integration into industrial control systems, two 4-20 mA analogue outputs, three relay outputs (SPDT, 250 V AC/30 V DC, max. 5 A), and an RS485 interface with Modbus RTU protocol are available. The pH Controller allows measurement and calibration data to be stored, which can be retrieved via the display. The controller housing is IP55-rated, and the sensor is IP68-rated, enabling use in harsh environments.

Typical applications for the pH Controller include water quality monitoring in wastewater treatment, process control in industry, drinking water monitoring, and measurement in surface and groundwater.

Features

• pH controller with integrated temperature sensor
• 3-inch TFT colour display with 800 x 480 pixels
• 2 x 4-20 mA analogue outputs
• 3 relay outputs (SPDT, max. 5 A)
• RS485 interface (Modbus RTU)
• Automatic temperature compensation
• Storage of measurement and calibration data
• Protection class IP68 (sensor), IP55 (controller)
• Adjustable alarm